diff options
Diffstat (limited to 'thirdparty/etc2comp')
43 files changed, 0 insertions, 12921 deletions
diff --git a/thirdparty/etc2comp/AUTHORS b/thirdparty/etc2comp/AUTHORS deleted file mode 100644 index e78a7f4d21..0000000000 --- a/thirdparty/etc2comp/AUTHORS +++ /dev/null @@ -1,7 +0,0 @@ -# This is the list of Etc2Comp authors for copyright purposes. -# -# This does not necessarily list everyone who has contributed code, since in -# some cases, their employer may be the copyright holder. To see the full list -# of contributors, see the revision history in source control. -Google Inc. -Blue Shift Inc. diff --git a/thirdparty/etc2comp/Etc.cpp b/thirdparty/etc2comp/Etc.cpp deleted file mode 100644 index a5ee706048..0000000000 --- a/thirdparty/etc2comp/Etc.cpp +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "EtcConfig.h" -#include "Etc.h" -#include "EtcFilter.h" - -#include <string.h> - -namespace Etc -{ - // ---------------------------------------------------------------------------------------------------- - // C-style inteface to the encoder - // - void Encode(float *a_pafSourceRGBA, - unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - Image::Format a_format, - ErrorMetric a_eErrMetric, - float a_fEffort, - unsigned int a_uiJobs, - unsigned int a_uiMaxJobs, - unsigned char **a_ppaucEncodingBits, - unsigned int *a_puiEncodingBitsBytes, - unsigned int *a_puiExtendedWidth, - unsigned int *a_puiExtendedHeight, - int *a_piEncodingTime_ms, bool a_bVerboseOutput) - { - - Image image(a_pafSourceRGBA, a_uiSourceWidth, - a_uiSourceHeight, - a_eErrMetric); - image.m_bVerboseOutput = a_bVerboseOutput; - image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs); - - *a_ppaucEncodingBits = image.GetEncodingBits(); - *a_puiEncodingBitsBytes = image.GetEncodingBitsBytes(); - *a_puiExtendedWidth = image.GetExtendedWidth(); - *a_puiExtendedHeight = image.GetExtendedHeight(); - *a_piEncodingTime_ms = image.GetEncodingTimeMs(); - } - - void EncodeMipmaps(float *a_pafSourceRGBA, - unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - Image::Format a_format, - ErrorMetric a_eErrMetric, - float a_fEffort, - unsigned int a_uiJobs, - unsigned int a_uiMaxJobs, - unsigned int a_uiMaxMipmaps, - unsigned int a_uiMipFilterFlags, - RawImage* a_pMipmapImages, - int *a_piEncodingTime_ms, - bool a_bVerboseOutput) - { - auto mipWidth = a_uiSourceWidth; - auto mipHeight = a_uiSourceHeight; - int totalEncodingTime = 0; - for(unsigned int mip = 0; mip < a_uiMaxMipmaps && mipWidth >= 1 && mipHeight >= 1; mip++) - { - float* pImageData = nullptr; - float* pMipImage = nullptr; - - if(mip == 0) - { - pImageData = a_pafSourceRGBA; - } - else - { - pMipImage = new float[mipWidth*mipHeight*4]; - if(FilterTwoPass(a_pafSourceRGBA, a_uiSourceWidth, a_uiSourceHeight, pMipImage, mipWidth, mipHeight, a_uiMipFilterFlags, Etc::FilterLanczos3) ) - { - pImageData = pMipImage; - } - } - - if ( pImageData ) - { - - Image image(pImageData, mipWidth, mipHeight, a_eErrMetric); - - image.m_bVerboseOutput = a_bVerboseOutput; - image.Encode(a_format, a_eErrMetric, a_fEffort, a_uiJobs, a_uiMaxJobs); - - a_pMipmapImages[mip].paucEncodingBits = std::shared_ptr<unsigned char>(image.GetEncodingBits(), [](unsigned char *p) { delete[] p; }); - a_pMipmapImages[mip].uiEncodingBitsBytes = image.GetEncodingBitsBytes(); - a_pMipmapImages[mip].uiExtendedWidth = image.GetExtendedWidth(); - a_pMipmapImages[mip].uiExtendedHeight = image.GetExtendedHeight(); - - totalEncodingTime += image.GetEncodingTimeMs(); - } - - if(pMipImage) - { - delete[] pMipImage; - } - - if (!pImageData) - { - break; - } - - mipWidth >>= 1; - mipHeight >>= 1; - } - - *a_piEncodingTime_ms = totalEncodingTime; - } - - - // ---------------------------------------------------------------------------------------------------- - // - -} diff --git a/thirdparty/etc2comp/Etc.h b/thirdparty/etc2comp/Etc.h deleted file mode 100644 index 439388d649..0000000000 --- a/thirdparty/etc2comp/Etc.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcConfig.h" -#include "EtcImage.h" -#include "EtcColor.h" -#include "EtcErrorMetric.h" -#include <memory> - -#define ETCCOMP_MIN_EFFORT_LEVEL (0.0f) -#define ETCCOMP_DEFAULT_EFFORT_LEVEL (40.0f) -#define ETCCOMP_MAX_EFFORT_LEVEL (100.0f) - -namespace Etc -{ - class Block4x4EncodingBits; - - struct RawImage - { - int uiExtendedWidth; - int uiExtendedHeight; - unsigned int uiEncodingBitsBytes; - std::shared_ptr<unsigned char> paucEncodingBits; - }; - - - - // C-style inteface to the encoder - void Encode(float *a_pafSourceRGBA, - unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - Image::Format a_format, - ErrorMetric a_eErrMetric, - float a_fEffort, - unsigned int a_uiJobs, - unsigned int a_uimaxJobs, - unsigned char **a_ppaucEncodingBits, - unsigned int *a_puiEncodingBitsBytes, - unsigned int *a_puiExtendedWidth, - unsigned int *a_puiExtendedHeight, - int *a_piEncodingTime_ms, bool a_bVerboseOutput = false); - - void EncodeMipmaps(float *a_pafSourceRGBA, - unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - Image::Format a_format, - ErrorMetric a_eErrMetric, - float a_fEffort, - unsigned int a_uiJobs, - unsigned int a_uiMaxJobs, - unsigned int a_uiMaxMipmaps, - unsigned int a_uiMipFilterFlags, - RawImage* a_pMipmaps, - int *a_piEncodingTime_ms, bool a_bVerboseOutput = false); - -} diff --git a/thirdparty/etc2comp/EtcBlock4x4.cpp b/thirdparty/etc2comp/EtcBlock4x4.cpp deleted file mode 100644 index 3082fe60db..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4.cpp +++ /dev/null @@ -1,425 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4.cpp - -Implements the state associated with each 4x4 block of pixels in an image - -Source images that are not a multiple of 4x4 are extended to fill the Block4x4 using pixels with an -alpha of NAN - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcColor.h" -#include "EtcImage.h" -#include "EtcColorFloatRGBA.h" -#include "EtcBlock4x4Encoding_RGB8.h" -#include "EtcBlock4x4Encoding_RGBA8.h" -#include "EtcBlock4x4Encoding_RGB8A1.h" -#include "EtcBlock4x4Encoding_R11.h" -#include "EtcBlock4x4Encoding_RG11.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> - -namespace Etc -{ - // ETC pixels are scanned vertically. - // this mapping is for when someone wants to scan the ETC pixels horizontally - const unsigned int Block4x4::s_auiPixelOrderHScan[PIXELS] = { 0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15 }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4::Block4x4(void) - { - m_pimageSource = nullptr; - m_uiSourceH = 0; - m_uiSourceV = 0; - - m_sourcealphamix = SourceAlphaMix::UNKNOWN; - m_boolBorderPixels = false; - m_boolPunchThroughPixels = false; - - m_pencoding = nullptr; - - m_errormetric = ErrorMetric::NUMERIC; - - } - Block4x4::~Block4x4() - { - m_pimageSource = nullptr; - if (m_pencoding) - { - delete m_pencoding; - m_pencoding = nullptr; - } - } - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding from a source image - // [a_uiSourceH,a_uiSourceV] is the location of the block in a_pimageSource - // a_paucEncodingBits is the place to store the final encoding - // a_errormetric is used for finding the best encoding - // - void Block4x4::InitFromSource(Image *a_pimageSource, - unsigned int a_uiSourceH, unsigned int a_uiSourceV, - unsigned char *a_paucEncodingBits, - ErrorMetric a_errormetric) - { - - Block4x4(); - - m_pimageSource = a_pimageSource; - m_uiSourceH = a_uiSourceH; - m_uiSourceV = a_uiSourceV; - m_errormetric = a_errormetric; - - SetSourcePixels(); - - // set block encoder function - switch (m_pimageSource->GetFormat()) - { - case Image::Format::ETC1: - m_pencoding = new Block4x4Encoding_ETC1; - break; - - case Image::Format::RGB8: - case Image::Format::SRGB8: - m_pencoding = new Block4x4Encoding_RGB8; - break; - - case Image::Format::RGBA8: - case Image::Format::SRGBA8: - if (a_errormetric == RGBX) - { - m_pencoding = new Block4x4Encoding_RGBA8; - } - else - { - switch (m_sourcealphamix) - { - case SourceAlphaMix::OPAQUE: - m_pencoding = new Block4x4Encoding_RGBA8_Opaque; - break; - - case SourceAlphaMix::TRANSPARENT: - m_pencoding = new Block4x4Encoding_RGBA8_Transparent; - break; - - case SourceAlphaMix::TRANSLUCENT: - m_pencoding = new Block4x4Encoding_RGBA8; - break; - - default: - assert(0); - break; - } - break; - } - break; - - case Image::Format::RGB8A1: - case Image::Format::SRGB8A1: - switch (m_sourcealphamix) - { - case SourceAlphaMix::OPAQUE: - m_pencoding = new Block4x4Encoding_RGB8A1_Opaque; - break; - - case SourceAlphaMix::TRANSPARENT: - m_pencoding = new Block4x4Encoding_RGB8A1_Transparent; - break; - - case SourceAlphaMix::TRANSLUCENT: - if (m_boolPunchThroughPixels) - { - m_pencoding = new Block4x4Encoding_RGB8A1; - } - else - { - m_pencoding = new Block4x4Encoding_RGB8A1_Opaque; - } - break; - - default: - assert(0); - break; - } - break; - - case Image::Format::R11: - case Image::Format::SIGNED_R11: - m_pencoding = new Block4x4Encoding_R11; - break; - case Image::Format::RG11: - case Image::Format::SIGNED_RG11: - m_pencoding = new Block4x4Encoding_RG11; - break; - default: - assert(0); - break; - } - - m_pencoding->InitFromSource(this, m_afrgbaSource, - a_paucEncodingBits, a_errormetric); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization of encoding state from a prior encoding using encoding bits - // [a_uiSourceH,a_uiSourceV] is the location of the block in a_pimageSource - // a_paucEncodingBits is the place to read the prior encoding - // a_imageformat is used to determine how to interpret a_paucEncodingBits - // a_errormetric was used for the prior encoding - // - void Block4x4::InitFromEtcEncodingBits(Image::Format a_imageformat, - unsigned int a_uiSourceH, unsigned int a_uiSourceV, - unsigned char *a_paucEncodingBits, - Image *a_pimageSource, - ErrorMetric a_errormetric) - { - Block4x4(); - - m_pimageSource = a_pimageSource; - m_uiSourceH = a_uiSourceH; - m_uiSourceV = a_uiSourceV; - m_errormetric = a_errormetric; - - SetSourcePixels(); - - // set block encoder function - switch (a_imageformat) - { - case Image::Format::ETC1: - m_pencoding = new Block4x4Encoding_ETC1; - break; - - case Image::Format::RGB8: - case Image::Format::SRGB8: - m_pencoding = new Block4x4Encoding_RGB8; - break; - - case Image::Format::RGBA8: - case Image::Format::SRGBA8: - m_pencoding = new Block4x4Encoding_RGBA8; - break; - - case Image::Format::RGB8A1: - case Image::Format::SRGB8A1: - m_pencoding = new Block4x4Encoding_RGB8A1; - break; - - case Image::Format::R11: - case Image::Format::SIGNED_R11: - m_pencoding = new Block4x4Encoding_R11; - break; - case Image::Format::RG11: - case Image::Format::SIGNED_RG11: - m_pencoding = new Block4x4Encoding_RG11; - break; - default: - assert(0); - break; - } - - m_pencoding->InitFromEncodingBits(this, a_paucEncodingBits, m_afrgbaSource, - m_pimageSource->GetErrorMetric()); - - } - - // ---------------------------------------------------------------------------------------------------- - // set source pixels from m_pimageSource - // set m_alphamix - // - void Block4x4::SetSourcePixels(void) - { - - Image::Format imageformat = m_pimageSource->GetFormat(); - - // alpha census - unsigned int uiTransparentSourcePixels = 0; - unsigned int uiOpaqueSourcePixels = 0; - - // copy source to consecutive memory locations - // convert from image horizontal scan to block vertical scan - unsigned int uiPixel = 0; - for (unsigned int uiBlockPixelH = 0; uiBlockPixelH < Block4x4::COLUMNS; uiBlockPixelH++) - { - unsigned int uiSourcePixelH = m_uiSourceH + uiBlockPixelH; - - for (unsigned int uiBlockPixelV = 0; uiBlockPixelV < Block4x4::ROWS; uiBlockPixelV++) - { - unsigned int uiSourcePixelV = m_uiSourceV + uiBlockPixelV; - - ColorFloatRGBA *pfrgbaSource = m_pimageSource->GetSourcePixel(uiSourcePixelH, uiSourcePixelV); - - // if pixel extends beyond source image because of block padding - if (pfrgbaSource == nullptr) - { - m_afrgbaSource[uiPixel] = ColorFloatRGBA(0.0f, 0.0f, 0.0f, NAN); // denotes border pixel - m_boolBorderPixels = true; - uiTransparentSourcePixels++; - } - else - { - //get teh current pixel data, and store some of the attributes - //before capping values to fit the encoder type - - m_afrgbaSource[uiPixel] = (*pfrgbaSource).ClampRGBA(); - - if (m_afrgbaSource[uiPixel].fA == 1.0f || m_errormetric == RGBX) - { - m_pimageSource->m_iNumOpaquePixels++; - } - else if (m_afrgbaSource[uiPixel].fA == 0.0f) - { - m_pimageSource->m_iNumTransparentPixels++; - } - else if(m_afrgbaSource[uiPixel].fA > 0.0f && m_afrgbaSource[uiPixel].fA < 1.0f) - { - m_pimageSource->m_iNumTranslucentPixels++; - } - else - { - m_pimageSource->m_numOutOfRangeValues.fA++; - } - - if (m_afrgbaSource[uiPixel].fR != 0.0f) - { - m_pimageSource->m_numColorValues.fR++; - //make sure we are getting a float between 0-1 - if (m_afrgbaSource[uiPixel].fR - 1.0f > 0.0f) - { - m_pimageSource->m_numOutOfRangeValues.fR++; - } - } - - if (m_afrgbaSource[uiPixel].fG != 0.0f) - { - m_pimageSource->m_numColorValues.fG++; - if (m_afrgbaSource[uiPixel].fG - 1.0f > 0.0f) - { - m_pimageSource->m_numOutOfRangeValues.fG++; - } - } - if (m_afrgbaSource[uiPixel].fB != 0.0f) - { - m_pimageSource->m_numColorValues.fB++; - if (m_afrgbaSource[uiPixel].fB - 1.0f > 0.0f) - { - m_pimageSource->m_numOutOfRangeValues.fB++; - } - } - // for formats with no alpha, set source alpha to 1 - if (imageformat == Image::Format::ETC1 || - imageformat == Image::Format::RGB8 || - imageformat == Image::Format::SRGB8) - { - m_afrgbaSource[uiPixel].fA = 1.0f; - } - - if (imageformat == Image::Format::R11 || - imageformat == Image::Format::SIGNED_R11) - { - m_afrgbaSource[uiPixel].fA = 1.0f; - m_afrgbaSource[uiPixel].fG = 0.0f; - m_afrgbaSource[uiPixel].fB = 0.0f; - } - - if (imageformat == Image::Format::RG11 || - imageformat == Image::Format::SIGNED_RG11) - { - m_afrgbaSource[uiPixel].fA = 1.0f; - m_afrgbaSource[uiPixel].fB = 0.0f; - } - - - // for RGB8A1, set source alpha to 0.0 or 1.0 - // set punch through flag - if (imageformat == Image::Format::RGB8A1 || - imageformat == Image::Format::SRGB8A1) - { - if (m_afrgbaSource[uiPixel].fA >= 0.5f) - { - m_afrgbaSource[uiPixel].fA = 1.0f; - } - else - { - m_afrgbaSource[uiPixel].fA = 0.0f; - m_boolPunchThroughPixels = true; - } - } - - if (m_afrgbaSource[uiPixel].fA == 1.0f || m_errormetric == RGBX) - { - uiOpaqueSourcePixels++; - } - else if (m_afrgbaSource[uiPixel].fA == 0.0f) - { - uiTransparentSourcePixels++; - } - - } - - uiPixel += 1; - } - } - - if (uiOpaqueSourcePixels == PIXELS) - { - m_sourcealphamix = SourceAlphaMix::OPAQUE; - } - else if (uiTransparentSourcePixels == PIXELS) - { - m_sourcealphamix = SourceAlphaMix::TRANSPARENT; - } - else - { - m_sourcealphamix = SourceAlphaMix::TRANSLUCENT; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // return a name for the encoding mode - // - const char * Block4x4::GetEncodingModeName(void) - { - - switch (m_pencoding->GetMode()) - { - case Block4x4Encoding::MODE_ETC1: - return "ETC1"; - case Block4x4Encoding::MODE_T: - return "T"; - case Block4x4Encoding::MODE_H: - return "H"; - case Block4x4Encoding::MODE_PLANAR: - return "PLANAR"; - default: - return "???"; - } - } - - // ---------------------------------------------------------------------------------------------------- - // - -} diff --git a/thirdparty/etc2comp/EtcBlock4x4.h b/thirdparty/etc2comp/EtcBlock4x4.h deleted file mode 100644 index 0fd30c598d..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4.h +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcColor.h" -#include "EtcColorFloatRGBA.h" -#include "EtcErrorMetric.h" -#include "EtcImage.h" -#include "EtcBlock4x4Encoding.h" - -namespace Etc -{ - class Block4x4EncodingBits; - - class Block4x4 - { - public: - - static const unsigned int ROWS = 4; - static const unsigned int COLUMNS = 4; - static const unsigned int PIXELS = ROWS * COLUMNS; - - // the alpha mix for a 4x4 block of pixels - enum class SourceAlphaMix - { - UNKNOWN, - // - OPAQUE, // all 1.0 - TRANSPARENT, // all 0.0 or NAN - TRANSLUCENT // not all opaque or transparent - }; - - typedef void (Block4x4::*EncoderFunctionPtr)(void); - - Block4x4(void); - ~Block4x4(); - void InitFromSource(Image *a_pimageSource, - unsigned int a_uiSourceH, - unsigned int a_uiSourceV, - unsigned char *a_paucEncodingBits, - ErrorMetric a_errormetric); - - void InitFromEtcEncodingBits(Image::Format a_imageformat, - unsigned int a_uiSourceH, - unsigned int a_uiSourceV, - unsigned char *a_paucEncodingBits, - Image *a_pimageSource, - ErrorMetric a_errormetric); - - // return true if final iteration was performed - inline void PerformEncodingIteration(float a_fEffort) - { - m_pencoding->PerformIteration(a_fEffort); - } - - inline void SetEncodingBitsFromEncoding(void) - { - m_pencoding->SetEncodingBits(); - } - - inline unsigned int GetSourceH(void) - { - return m_uiSourceH; - } - - inline unsigned int GetSourceV(void) - { - return m_uiSourceV; - } - - inline float GetError(void) - { - return m_pencoding->GetError(); - } - - static const unsigned int s_auiPixelOrderHScan[PIXELS]; - - inline ColorFloatRGBA * GetDecodedColors(void) - { - return m_pencoding->GetDecodedColors(); - } - - inline float * GetDecodedAlphas(void) - { - return m_pencoding->GetDecodedAlphas(); - } - - inline Block4x4Encoding::Mode GetEncodingMode(void) - { - return m_pencoding->GetMode(); - } - - inline bool GetFlip(void) - { - return m_pencoding->GetFlip(); - } - - inline bool IsDifferential(void) - { - return m_pencoding->IsDifferential(); - } - - inline ColorFloatRGBA * GetSource() - { - return m_afrgbaSource; - } - - inline ErrorMetric GetErrorMetric() - { - return m_errormetric; - } - - const char * GetEncodingModeName(void); - - inline Block4x4Encoding * GetEncoding(void) - { - return m_pencoding; - } - - inline SourceAlphaMix GetSourceAlphaMix(void) - { - return m_sourcealphamix; - } - - inline Image * GetImageSource(void) - { - return m_pimageSource; - } - - inline bool HasBorderPixels(void) - { - return m_boolBorderPixels; - } - - inline bool HasPunchThroughPixels(void) - { - return m_boolPunchThroughPixels; - } - - private: - - void SetSourcePixels(void); - - Image *m_pimageSource; - unsigned int m_uiSourceH; - unsigned int m_uiSourceV; - ErrorMetric m_errormetric; - ColorFloatRGBA m_afrgbaSource[PIXELS]; // vertical scan - - SourceAlphaMix m_sourcealphamix; - bool m_boolBorderPixels; // marked as rgba(NAN, NAN, NAN, NAN) - bool m_boolPunchThroughPixels; // RGB8A1 or SRGB8A1 with any pixels with alpha < 0.5 - - Block4x4Encoding *m_pencoding; - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding.cpp deleted file mode 100644 index 7a9e68c4cf..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding.cpp +++ /dev/null @@ -1,261 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding.cpp - -Block4x4Encoding is the abstract base class for the different encoders. Each encoder targets a -particular file format (e.g. ETC1, RGB8, RGBA8, R11) - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> - -namespace Etc -{ - // ---------------------------------------------------------------------------------------------------- - // - const float Block4x4Encoding::LUMA_WEIGHT = 3.0f; - const float Block4x4Encoding::CHROMA_BLUE_WEIGHT = 0.5f; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding::Block4x4Encoding(void) - { - - m_pblockParent = nullptr; - - m_pafrgbaSource = nullptr; - - m_boolBorderPixels = false; - - m_fError = -1.0f; - - m_mode = MODE_UNKNOWN; - - m_uiEncodingIterations = 0; - m_boolDone = false; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(-1.0f, -1.0f, -1.0f, -1.0f); - m_afDecodedAlphas[uiPixel] = -1.0f; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // initialize the generic encoding for a 4x4 block - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // init the decoded pixels to -1 to mark them as undefined - // init the error to -1 to mark it as undefined - // - void Block4x4Encoding::Init(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - m_pblockParent = a_pblockParent; - - m_pafrgbaSource = a_pafrgbaSource; - - m_boolBorderPixels = m_pblockParent->HasBorderPixels(); - - m_fError = -1.0f; - - m_uiEncodingIterations = 0; - - m_errormetric = a_errormetric; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(-1.0f, -1.0f, -1.0f, -1.0f); - m_afDecodedAlphas[uiPixel] = -1.0f; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // calculate the error for the block by summing the pixel errors - // - void Block4x4Encoding::CalcBlockError(void) - { - m_fError = 0.0f; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_fError += CalcPixelError(m_afrgbaDecodedColors[uiPixel], m_afDecodedAlphas[uiPixel], - m_pafrgbaSource[uiPixel]); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // calculate the error between the source pixel and the decoded pixel - // the error amount is base on the error metric - // - float Block4x4Encoding::CalcPixelError(ColorFloatRGBA a_frgbaDecodedColor, float a_fDecodedAlpha, - ColorFloatRGBA a_frgbaSourcePixel) - { - - // if a border pixel - if (isnan(a_frgbaSourcePixel.fA)) - { - return 0.0f; - } - - if (m_errormetric == ErrorMetric::RGBA) - { - assert(a_fDecodedAlpha >= 0.0f); - - float fDRed = (a_fDecodedAlpha * a_frgbaDecodedColor.fR) - - (a_frgbaSourcePixel.fA * a_frgbaSourcePixel.fR); - float fDGreen = (a_fDecodedAlpha * a_frgbaDecodedColor.fG) - - (a_frgbaSourcePixel.fA * a_frgbaSourcePixel.fG); - float fDBlue = (a_fDecodedAlpha * a_frgbaDecodedColor.fB) - - (a_frgbaSourcePixel.fA * a_frgbaSourcePixel.fB); - - float fDAlpha = a_fDecodedAlpha - a_frgbaSourcePixel.fA; - - return fDRed*fDRed + fDGreen*fDGreen + fDBlue*fDBlue + fDAlpha*fDAlpha; - } - else if (m_errormetric == ErrorMetric::RGBX) - { - assert(a_fDecodedAlpha >= 0.0f); - - float fDRed = a_frgbaDecodedColor.fR - a_frgbaSourcePixel.fR; - float fDGreen = a_frgbaDecodedColor.fG - a_frgbaSourcePixel.fG; - float fDBlue = a_frgbaDecodedColor.fB - a_frgbaSourcePixel.fB; - float fDAlpha = a_fDecodedAlpha - a_frgbaSourcePixel.fA; - - return fDRed*fDRed + fDGreen*fDGreen + fDBlue*fDBlue + fDAlpha*fDAlpha; - } - else if (m_errormetric == ErrorMetric::REC709) - { - assert(a_fDecodedAlpha >= 0.0f); - - float fLuma1 = a_frgbaSourcePixel.fR*0.2126f + a_frgbaSourcePixel.fG*0.7152f + a_frgbaSourcePixel.fB*0.0722f; - float fChromaR1 = 0.5f * ((a_frgbaSourcePixel.fR - fLuma1) * (1.0f / (1.0f - 0.2126f))); - float fChromaB1 = 0.5f * ((a_frgbaSourcePixel.fB - fLuma1) * (1.0f / (1.0f - 0.0722f))); - - float fLuma2 = a_frgbaDecodedColor.fR*0.2126f + - a_frgbaDecodedColor.fG*0.7152f + - a_frgbaDecodedColor.fB*0.0722f; - float fChromaR2 = 0.5f * ((a_frgbaDecodedColor.fR - fLuma2) * (1.0f / (1.0f - 0.2126f))); - float fChromaB2 = 0.5f * ((a_frgbaDecodedColor.fB - fLuma2) * (1.0f / (1.0f - 0.0722f))); - - float fDeltaL = a_frgbaSourcePixel.fA * fLuma1 - a_fDecodedAlpha * fLuma2; - float fDeltaCr = a_frgbaSourcePixel.fA * fChromaR1 - a_fDecodedAlpha * fChromaR2; - float fDeltaCb = a_frgbaSourcePixel.fA * fChromaB1 - a_fDecodedAlpha * fChromaB2; - - float fDAlpha = a_fDecodedAlpha - a_frgbaSourcePixel.fA; - - // Favor Luma accuracy over Chroma, and Red over Blue - return LUMA_WEIGHT*fDeltaL*fDeltaL + - fDeltaCr*fDeltaCr + - CHROMA_BLUE_WEIGHT*fDeltaCb*fDeltaCb + - fDAlpha*fDAlpha; - #if 0 - float fDRed = a_frgbaDecodedPixel.fR - a_frgbaSourcePixel.fR; - float fDGreen = a_frgbaDecodedPixel.fG - a_frgbaSourcePixel.fG; - float fDBlue = a_frgbaDecodedPixel.fB - a_frgbaSourcePixel.fB; - return 2.0f * 3.0f * fDeltaL * fDeltaL + fDRed*fDRed + fDGreen*fDGreen + fDBlue*fDBlue; -#endif - } - else if (m_errormetric == ErrorMetric::NORMALXYZ) - { - float fDecodedX = 2.0f * a_frgbaDecodedColor.fR - 1.0f; - float fDecodedY = 2.0f * a_frgbaDecodedColor.fG - 1.0f; - float fDecodedZ = 2.0f * a_frgbaDecodedColor.fB - 1.0f; - - float fDecodedLength = sqrtf(fDecodedX*fDecodedX + fDecodedY*fDecodedY + fDecodedZ*fDecodedZ); - - if (fDecodedLength < 0.5f) - { - return 1.0f; - } - else if (fDecodedLength == 0.0f) - { - fDecodedX = 1.0f; - fDecodedY = 0.0f; - fDecodedZ = 0.0f; - } - else - { - fDecodedX /= fDecodedLength; - fDecodedY /= fDecodedLength; - fDecodedZ /= fDecodedLength; - } - - float fSourceX = 2.0f * a_frgbaSourcePixel.fR - 1.0f; - float fSourceY = 2.0f * a_frgbaSourcePixel.fG - 1.0f; - float fSourceZ = 2.0f * a_frgbaSourcePixel.fB - 1.0f; - - float fSourceLength = sqrtf(fSourceX*fSourceX + fSourceY*fSourceY + fSourceZ*fSourceZ); - - if (fSourceLength == 0.0f) - { - fSourceX = 1.0f; - fSourceY = 0.0f; - fSourceZ = 0.0f; - } - else - { - fSourceX /= fSourceLength; - fSourceY /= fSourceLength; - fSourceZ /= fSourceLength; - } - - float fDotProduct = fSourceX*fDecodedX + fSourceY*fDecodedY + fSourceZ*fDecodedZ; - float fNormalizedDotProduct = 1.0f - 0.5f * (fDotProduct + 1.0f); - float fDotProductError = fNormalizedDotProduct * fNormalizedDotProduct; - - float fLength2 = fDecodedX*fDecodedX + fDecodedY*fDecodedY + fDecodedZ*fDecodedZ; - float fLength2Error = fabsf(1.0f - fLength2); - - float fDeltaW = a_frgbaDecodedColor.fA - a_frgbaSourcePixel.fA; - float fErrorW = fDeltaW * fDeltaW; - - return fDotProductError + fLength2Error + fErrorW; - } - else // ErrorMetric::NUMERIC - { - assert(a_fDecodedAlpha >= 0.0f); - - float fDX = a_frgbaDecodedColor.fR - a_frgbaSourcePixel.fR; - float fDY = a_frgbaDecodedColor.fG - a_frgbaSourcePixel.fG; - float fDZ = a_frgbaDecodedColor.fB - a_frgbaSourcePixel.fB; - float fDW = a_frgbaDecodedColor.fA - a_frgbaSourcePixel.fA; - - return fDX*fDX + fDY*fDY + fDZ*fDZ + fDW*fDW; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc - diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding.h b/thirdparty/etc2comp/EtcBlock4x4Encoding.h deleted file mode 100644 index c14c3b8616..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding.h +++ /dev/null @@ -1,148 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcColorFloatRGBA.h" - -#include "EtcErrorMetric.h" - -#include <assert.h> -#include <float.h> - -namespace Etc -{ - class Block4x4; - - // abstract base class for specific encodings - class Block4x4Encoding - { - public: - - static const unsigned int ROWS = 4; - static const unsigned int COLUMNS = 4; - static const unsigned int PIXELS = ROWS * COLUMNS; - static const float LUMA_WEIGHT; - static const float CHROMA_BLUE_WEIGHT; - - typedef enum - { - MODE_UNKNOWN, - // - MODE_ETC1, - MODE_T, - MODE_H, - MODE_PLANAR, - MODE_R11, - MODE_RG11, - // - MODES - } Mode; - - Block4x4Encoding(void); - //virtual ~Block4x4Encoding(void) =0; - virtual ~Block4x4Encoding(void) {} - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric) = 0; - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - - ErrorMetric a_errormetric) = 0; - - // perform an iteration of the encoding - // the first iteration must generate a complete, valid (if poor) encoding - virtual void PerformIteration(float a_fEffort) = 0; - - void CalcBlockError(void); - - inline float GetError(void) - { - assert(m_fError >= 0.0f); - - return m_fError; - } - - inline ColorFloatRGBA * GetDecodedColors(void) - { - return m_afrgbaDecodedColors; - } - - inline float * GetDecodedAlphas(void) - { - return m_afDecodedAlphas; - } - - virtual void SetEncodingBits(void) = 0; - - virtual bool GetFlip(void) = 0; - - virtual bool IsDifferential(void) = 0; - - virtual bool HasSeverelyBentDifferentialColors(void) const = 0; - - inline Mode GetMode(void) - { - return m_mode; - } - - inline bool IsDone(void) - { - return m_boolDone; - } - - inline void SetDoneIfPerfect() - { - if (GetError() == 0.0f) - { - m_boolDone = true; - } - } - - float CalcPixelError(ColorFloatRGBA a_frgbaDecodedColor, float a_fDecodedAlpha, - ColorFloatRGBA a_frgbaSourcePixel); - - protected: - - void Init(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - - ErrorMetric a_errormetric); - - Block4x4 *m_pblockParent; - ColorFloatRGBA *m_pafrgbaSource; - - bool m_boolBorderPixels; // if block has any border pixels - - ColorFloatRGBA m_afrgbaDecodedColors[PIXELS]; // decoded RGB components, ignore Alpha - float m_afDecodedAlphas[PIXELS]; // decoded alpha component - float m_fError; // error for RGBA relative to m_pafrgbaSource - - // intermediate encoding - Mode m_mode; - - unsigned int m_uiEncodingIterations; - bool m_boolDone; // all iterations have been done - ErrorMetric m_errormetric; - - private: - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4EncodingBits.h b/thirdparty/etc2comp/EtcBlock4x4EncodingBits.h deleted file mode 100644 index 4065700379..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4EncodingBits.h +++ /dev/null @@ -1,315 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include <assert.h> - -namespace Etc -{ - - // ################################################################################ - // Block4x4EncodingBits - // Base class for Block4x4EncodingBits_XXXX - // ################################################################################ - - class Block4x4EncodingBits - { - public: - - enum class Format - { - UNKNOWN, - // - RGB8, - RGBA8, - R11, - RG11, - RGB8A1, - // - FORMATS - }; - - static unsigned int GetBytesPerBlock(Format a_format) - { - switch (a_format) - { - case Format::RGB8: - case Format::R11: - case Format::RGB8A1: - return 8; - break; - - case Format::RGBA8: - case Format::RG11: - return 16; - break; - - default: - return 0; - break; - } - - } - - }; - - // ################################################################################ - // Block4x4EncodingBits_RGB8 - // Encoding bits for the RGB portion of ETC1, RGB8, RGB8A1 and RGBA8 - // ################################################################################ - - class Block4x4EncodingBits_RGB8 - { - public: - - static const unsigned int BYTES_PER_BLOCK = 8; - - inline Block4x4EncodingBits_RGB8(void) - { - assert(sizeof(Block4x4EncodingBits_RGB8) == BYTES_PER_BLOCK); - - for (unsigned int uiByte = 0; uiByte < BYTES_PER_BLOCK; uiByte++) - { - auc[uiByte] = 0; - } - - } - - typedef struct - { - unsigned red2 : 4; - unsigned red1 : 4; - // - unsigned green2 : 4; - unsigned green1 : 4; - // - unsigned blue2 : 4; - unsigned blue1 : 4; - // - unsigned flip : 1; - unsigned diff : 1; - unsigned cw2 : 3; - unsigned cw1 : 3; - // - unsigned int selectors; - } Individual; - - typedef struct - { - signed dred2 : 3; - unsigned red1 : 5; - // - signed dgreen2 : 3; - unsigned green1 : 5; - // - signed dblue2 : 3; - unsigned blue1 : 5; - // - unsigned flip : 1; - unsigned diff : 1; - unsigned cw2 : 3; - unsigned cw1 : 3; - // - unsigned int selectors; - } Differential; - - typedef struct - { - unsigned red1b : 2; - unsigned detect2 : 1; - unsigned red1a : 2; - unsigned detect1 : 3; - // - unsigned blue1 : 4; - unsigned green1 : 4; - // - unsigned green2 : 4; - unsigned red2 : 4; - // - unsigned db : 1; - unsigned diff : 1; - unsigned da : 2; - unsigned blue2 : 4; - // - unsigned int selectors; - } T; - - typedef struct - { - unsigned green1a : 3; - unsigned red1 : 4; - unsigned detect1 : 1; - // - unsigned blue1b : 2; - unsigned detect3 : 1; - unsigned blue1a : 1; - unsigned green1b : 1; - unsigned detect2 : 3; - // - unsigned green2a : 3; - unsigned red2 : 4; - unsigned blue1c : 1; - // - unsigned db : 1; - unsigned diff : 1; - unsigned da : 1; - unsigned blue2 : 4; - unsigned green2b : 1; - // - unsigned int selectors; - } H; - - typedef struct - { - unsigned originGreen1 : 1; - unsigned originRed : 6; - unsigned detect1 : 1; - // - unsigned originBlue1 : 1; - unsigned originGreen2 : 6; - unsigned detect2 : 1; - // - unsigned originBlue3 : 2; - unsigned detect4 : 1; - unsigned originBlue2 : 2; - unsigned detect3 : 3; - // - unsigned horizRed2 : 1; - unsigned diff : 1; - unsigned horizRed1 : 5; - unsigned originBlue4 : 1; - // - unsigned horizBlue1: 1; - unsigned horizGreen : 7; - // - unsigned vertRed1 : 3; - unsigned horizBlue2 : 5; - // - unsigned vertGreen1 : 5; - unsigned vertRed2 : 3; - // - unsigned vertBlue : 6; - unsigned vertGreen2 : 2; - } Planar; - - union - { - unsigned char auc[BYTES_PER_BLOCK]; - unsigned long int ul; - Individual individual; - Differential differential; - T t; - H h; - Planar planar; - }; - - }; - - // ################################################################################ - // Block4x4EncodingBits_A8 - // Encoding bits for the A portion of RGBA8 - // ################################################################################ - - class Block4x4EncodingBits_A8 - { - public: - - static const unsigned int BYTES_PER_BLOCK = 8; - static const unsigned int SELECTOR_BYTES = 6; - - typedef struct - { - unsigned base : 8; - unsigned table : 4; - unsigned multiplier : 4; - unsigned selectors0 : 8; - unsigned selectors1 : 8; - unsigned selectors2 : 8; - unsigned selectors3 : 8; - unsigned selectors4 : 8; - unsigned selectors5 : 8; - } Data; - - Data data; - - }; - - // ################################################################################ - // Block4x4EncodingBits_R11 - // Encoding bits for the R portion of R11 - // ################################################################################ - - class Block4x4EncodingBits_R11 - { - public: - - static const unsigned int BYTES_PER_BLOCK = 8; - static const unsigned int SELECTOR_BYTES = 6; - - typedef struct - { - unsigned base : 8; - unsigned table : 4; - unsigned multiplier : 4; - unsigned selectors0 : 8; - unsigned selectors1 : 8; - unsigned selectors2 : 8; - unsigned selectors3 : 8; - unsigned selectors4 : 8; - unsigned selectors5 : 8; - } Data; - - Data data; - - }; - - class Block4x4EncodingBits_RG11 - { - public: - - static const unsigned int BYTES_PER_BLOCK = 16; - static const unsigned int SELECTOR_BYTES = 12; - - typedef struct - { - //Red portion - unsigned baseR : 8; - unsigned tableIndexR : 4; - unsigned multiplierR : 4; - unsigned selectorsR0 : 8; - unsigned selectorsR1 : 8; - unsigned selectorsR2 : 8; - unsigned selectorsR3 : 8; - unsigned selectorsR4 : 8; - unsigned selectorsR5 : 8; - //Green portion - unsigned baseG : 8; - unsigned tableIndexG : 4; - unsigned multiplierG : 4; - unsigned selectorsG0 : 8; - unsigned selectorsG1 : 8; - unsigned selectorsG2 : 8; - unsigned selectorsG3 : 8; - unsigned selectorsG4 : 8; - unsigned selectorsG5 : 8; - } Data; - - Data data; - - }; - -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.cpp deleted file mode 100644 index a27f74c0d5..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.cpp +++ /dev/null @@ -1,1281 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_ETC1.cpp - -Block4x4Encoding_ETC1 is the encoder to use when targetting file format ETC1. This encoder is also -used for the ETC1 subset of file format RGB8, RGBA8 and RGB8A1 - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_ETC1.h" - -#include "EtcBlock4x4.h" -#include "EtcBlock4x4EncodingBits.h" -#include "EtcDifferentialTrys.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <float.h> -#include <limits> - -namespace Etc -{ - - // pixel processing order if the flip bit = 0 (horizontal split) - const unsigned int Block4x4Encoding_ETC1::s_auiPixelOrderFlip0[PIXELS] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; - - // pixel processing order if the flip bit = 1 (vertical split) - const unsigned int Block4x4Encoding_ETC1::s_auiPixelOrderFlip1[PIXELS] = { 0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15 }; - - // pixel processing order for horizontal scan (ETC normally does a vertical scan) - const unsigned int Block4x4Encoding_ETC1::s_auiPixelOrderHScan[PIXELS] = { 0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15 }; - - // pixel indices for different block halves - const unsigned int Block4x4Encoding_ETC1::s_auiLeftPixelMapping[8] = { 0, 1, 2, 3, 4, 5, 6, 7 }; - const unsigned int Block4x4Encoding_ETC1::s_auiRightPixelMapping[8] = { 8, 9, 10, 11, 12, 13, 14, 15 }; - const unsigned int Block4x4Encoding_ETC1::s_auiTopPixelMapping[8] = { 0, 1, 4, 5, 8, 9, 12, 13 }; - const unsigned int Block4x4Encoding_ETC1::s_auiBottomPixelMapping[8] = { 2, 3, 6, 7, 10, 11, 14, 15 }; - - // CW ranges that the ETC1 decoders use - // CW is basically a contrast for the different selector bits, since these values are offsets to the base color - // the first axis in the array is indexed by the CW in the encoding bits - // the second axis in the array is indexed by the selector bits - float Block4x4Encoding_ETC1::s_aafCwTable[CW_RANGES][SELECTORS] = - { - { 2.0f / 255.0f, 8.0f / 255.0f, -2.0f / 255.0f, -8.0f / 255.0f }, - { 5.0f / 255.0f, 17.0f / 255.0f, -5.0f / 255.0f, -17.0f / 255.0f }, - { 9.0f / 255.0f, 29.0f / 255.0f, -9.0f / 255.0f, -29.0f / 255.0f }, - { 13.0f / 255.0f, 42.0f / 255.0f, -13.0f / 255.0f, -42.0f / 255.0f }, - { 18.0f / 255.0f, 60.0f / 255.0f, -18.0f / 255.0f, -60.0f / 255.0f }, - { 24.0f / 255.0f, 80.0f / 255.0f, -24.0f / 255.0f, -80.0f / 255.0f }, - { 33.0f / 255.0f, 106.0f / 255.0f, -33.0f / 255.0f, -106.0f / 255.0f }, - { 47.0f / 255.0f, 183.0f / 255.0f, -47.0f / 255.0f, -183.0f / 255.0f } - }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_ETC1::Block4x4Encoding_ETC1(void) - { - m_mode = MODE_ETC1; - m_boolDiff = false; - m_boolFlip = false; - m_frgbaColor1 = ColorFloatRGBA(); - m_frgbaColor2 = ColorFloatRGBA(); - m_uiCW1 = 0; - m_uiCW2 = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = 0; - m_afDecodedAlphas[uiPixel] = 1.0f; - } - - m_boolMostLikelyFlip = false; - - m_fError = -1.0f; - - m_fError1 = -1.0f; - m_fError2 = -1.0f; - m_boolSeverelyBentDifferentialColors = false; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afDecodedAlphas[uiPixel] = 1.0f; - } - - } - - Block4x4Encoding_ETC1::~Block4x4Encoding_ETC1(void) {} - - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits - // - void Block4x4Encoding_ETC1::InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric) - { - - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource,a_errormetric); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afDecodedAlphas[uiPixel] = 1.0f; - } - - m_fError = -1.0f; - - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)(a_paucEncodingBits); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_ETC1::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource,a_errormetric); - m_fError = -1.0f; - - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)a_paucEncodingBits; - - m_mode = MODE_ETC1; - m_boolDiff = m_pencodingbitsRGB8->individual.diff; - m_boolFlip = m_pencodingbitsRGB8->individual.flip; - if (m_boolDiff) - { - int iR2 = (int)(m_pencodingbitsRGB8->differential.red1 + m_pencodingbitsRGB8->differential.dred2); - if (iR2 < 0) - { - iR2 = 0; - } - else if (iR2 > 31) - { - iR2 = 31; - } - - int iG2 = (int)(m_pencodingbitsRGB8->differential.green1 + m_pencodingbitsRGB8->differential.dgreen2); - if (iG2 < 0) - { - iG2 = 0; - } - else if (iG2 > 31) - { - iG2 = 31; - } - - int iB2 = (int)(m_pencodingbitsRGB8->differential.blue1 + m_pencodingbitsRGB8->differential.dblue2); - if (iB2 < 0) - { - iB2 = 0; - } - else if (iB2 > 31) - { - iB2 = 31; - } - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB5(m_pencodingbitsRGB8->differential.red1, m_pencodingbitsRGB8->differential.green1, m_pencodingbitsRGB8->differential.blue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)iR2, (unsigned char)iG2, (unsigned char)iB2); - - } - else - { - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4(m_pencodingbitsRGB8->individual.red1, m_pencodingbitsRGB8->individual.green1, m_pencodingbitsRGB8->individual.blue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4(m_pencodingbitsRGB8->individual.red2, m_pencodingbitsRGB8->individual.green2, m_pencodingbitsRGB8->individual.blue2); - } - - m_uiCW1 = m_pencodingbitsRGB8->individual.cw1; - m_uiCW2 = m_pencodingbitsRGB8->individual.cw2; - - InitFromEncodingBits_Selectors(); - - Decode(); - - CalcBlockError(); - } - - // ---------------------------------------------------------------------------------------------------- - // init the selectors from a prior encoding - // - void Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(void) - { - - unsigned char *paucSelectors = (unsigned char *)&m_pencodingbitsRGB8->individual.selectors; - - for (unsigned int iPixel = 0; iPixel < PIXELS; iPixel++) - { - unsigned int uiByteMSB = (unsigned int)(1 - (iPixel / 8)); - unsigned int uiByteLSB = (unsigned int)(3 - (iPixel / 8)); - unsigned int uiShift = (unsigned int)(iPixel & 7); - - unsigned int uiSelectorMSB = (unsigned int)((paucSelectors[uiByteMSB] >> uiShift) & 1); - unsigned int uiSelectorLSB = (unsigned int)((paucSelectors[uiByteLSB] >> uiShift) & 1); - - m_auiSelectors[iPixel] = (uiSelectorMSB << 1) + uiSelectorLSB; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_ETC1::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - - switch (m_uiEncodingIterations) - { - case 0: - PerformFirstIteration(); - break; - - case 1: - TryDifferential(m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 2: - TryIndividual(m_boolMostLikelyFlip, 1); - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 3: - TryDifferential(!m_boolMostLikelyFlip, 1, 0, 0); - if (a_fEffort <= 59.5f) - { - m_boolDone = true; - } - break; - - case 4: - TryIndividual(!m_boolMostLikelyFlip, 1); - if (a_fEffort <= 69.5f) - { - m_boolDone = true; - } - break; - - case 5: - TryDegenerates1(); - if (a_fEffort <= 79.5f) - { - m_boolDone = true; - } - break; - - case 6: - TryDegenerates2(); - if (a_fEffort <= 89.5f) - { - m_boolDone = true; - } - break; - - case 7: - TryDegenerates3(); - if (a_fEffort <= 99.5f) - { - m_boolDone = true; - } - break; - - case 8: - TryDegenerates4(); - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - SetDoneIfPerfect(); - } - - // ---------------------------------------------------------------------------------------------------- - // find best initial encoding to ensure block has a valid encoding - // - void Block4x4Encoding_ETC1::PerformFirstIteration(void) - { - CalculateMostLikelyFlip(); - - m_fError = FLT_MAX; - - TryDifferential(m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - - TryIndividual(m_boolMostLikelyFlip, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - TryDifferential(!m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - TryIndividual(!m_boolMostLikelyFlip, 0); - - } - - // ---------------------------------------------------------------------------------------------------- - // algorithm: - // create a source average color for the Left, Right, Top and Bottom halves using the 8 pixels in each half - // note: the "gray line" is the line of equal delta RGB that goes thru the average color - // for each half: - // see how close each of the 8 pixels are to the "gray line" that goes thru the source average color - // create an error value that is the sum of the distances from the gray line - // h_error is the sum of Left and Right errors - // v_error is the sum of Top and Bottom errors - // - void Block4x4Encoding_ETC1::CalculateMostLikelyFlip(void) - { - static const bool DEBUG_PRINT = false; - - CalculateSourceAverages(); - - float fLeftGrayErrorSum = 0.0f; - float fRightGrayErrorSum = 0.0f; - float fTopGrayErrorSum = 0.0f; - float fBottomGrayErrorSum = 0.0f; - - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ColorFloatRGBA *pfrgbaLeft = &m_pafrgbaSource[uiPixel]; - ColorFloatRGBA *pfrgbaRight = &m_pafrgbaSource[uiPixel + 8]; - ColorFloatRGBA *pfrgbaTop = &m_pafrgbaSource[s_auiTopPixelMapping[uiPixel]]; - ColorFloatRGBA *pfrgbaBottom = &m_pafrgbaSource[s_auiBottomPixelMapping[uiPixel]]; - - float fLeftGrayError = CalcGrayDistance2(*pfrgbaLeft, m_frgbaSourceAverageLeft); - float fRightGrayError = CalcGrayDistance2(*pfrgbaRight, m_frgbaSourceAverageRight); - float fTopGrayError = CalcGrayDistance2(*pfrgbaTop, m_frgbaSourceAverageTop); - float fBottomGrayError = CalcGrayDistance2(*pfrgbaBottom, m_frgbaSourceAverageBottom); - - fLeftGrayErrorSum += fLeftGrayError; - fRightGrayErrorSum += fRightGrayError; - fTopGrayErrorSum += fTopGrayError; - fBottomGrayErrorSum += fBottomGrayError; - } - - if (DEBUG_PRINT) - { - printf("\n%.2f %.2f\n", fLeftGrayErrorSum + fRightGrayErrorSum, fTopGrayErrorSum + fBottomGrayErrorSum); - } - - m_boolMostLikelyFlip = (fTopGrayErrorSum + fBottomGrayErrorSum) < (fLeftGrayErrorSum + fRightGrayErrorSum); - - } - - // ---------------------------------------------------------------------------------------------------- - // calculate source pixel averages for each 2x2 quadrant in a 4x4 block - // these are used to determine the averages for each of the 4 different halves (left, right, top, bottom) - // ignore pixels that have alpha == NAN (these are border pixels outside of the source image) - // weight the averages based on a pixel's alpha - // - void Block4x4Encoding_ETC1::CalculateSourceAverages(void) - { - static const bool DEBUG_PRINT = false; - - bool boolRGBX = m_pblockParent->GetImageSource()->GetErrorMetric() == ErrorMetric::RGBX; - - if (m_pblockParent->GetSourceAlphaMix() == Block4x4::SourceAlphaMix::OPAQUE || boolRGBX) - { - ColorFloatRGBA frgbaSumUL = m_pafrgbaSource[0] + m_pafrgbaSource[1] + m_pafrgbaSource[4] + m_pafrgbaSource[5]; - ColorFloatRGBA frgbaSumLL = m_pafrgbaSource[2] + m_pafrgbaSource[3] + m_pafrgbaSource[6] + m_pafrgbaSource[7]; - ColorFloatRGBA frgbaSumUR = m_pafrgbaSource[8] + m_pafrgbaSource[9] + m_pafrgbaSource[12] + m_pafrgbaSource[13]; - ColorFloatRGBA frgbaSumLR = m_pafrgbaSource[10] + m_pafrgbaSource[11] + m_pafrgbaSource[14] + m_pafrgbaSource[15]; - - m_frgbaSourceAverageLeft = (frgbaSumUL + frgbaSumLL) * 0.125f; - m_frgbaSourceAverageRight = (frgbaSumUR + frgbaSumLR) * 0.125f; - m_frgbaSourceAverageTop = (frgbaSumUL + frgbaSumUR) * 0.125f; - m_frgbaSourceAverageBottom = (frgbaSumLL + frgbaSumLR) * 0.125f; - } - else - { - float afSourceAlpha[PIXELS]; - - // treat alpha NAN as 0.0f - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - afSourceAlpha[uiPixel] = isnan(m_pafrgbaSource[uiPixel].fA) ? - 0.0f : - m_pafrgbaSource[uiPixel].fA; - } - - ColorFloatRGBA afrgbaAlphaWeightedSource[PIXELS]; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - afrgbaAlphaWeightedSource[uiPixel] = m_pafrgbaSource[uiPixel] * afSourceAlpha[uiPixel]; - } - - ColorFloatRGBA frgbaSumUL = afrgbaAlphaWeightedSource[0] + - afrgbaAlphaWeightedSource[1] + - afrgbaAlphaWeightedSource[4] + - afrgbaAlphaWeightedSource[5]; - - ColorFloatRGBA frgbaSumLL = afrgbaAlphaWeightedSource[2] + - afrgbaAlphaWeightedSource[3] + - afrgbaAlphaWeightedSource[6] + - afrgbaAlphaWeightedSource[7]; - - ColorFloatRGBA frgbaSumUR = afrgbaAlphaWeightedSource[8] + - afrgbaAlphaWeightedSource[9] + - afrgbaAlphaWeightedSource[12] + - afrgbaAlphaWeightedSource[13]; - - ColorFloatRGBA frgbaSumLR = afrgbaAlphaWeightedSource[10] + - afrgbaAlphaWeightedSource[11] + - afrgbaAlphaWeightedSource[14] + - afrgbaAlphaWeightedSource[15]; - - float fWeightSumUL = afSourceAlpha[0] + - afSourceAlpha[1] + - afSourceAlpha[4] + - afSourceAlpha[5]; - - float fWeightSumLL = afSourceAlpha[2] + - afSourceAlpha[3] + - afSourceAlpha[6] + - afSourceAlpha[7]; - - float fWeightSumUR = afSourceAlpha[8] + - afSourceAlpha[9] + - afSourceAlpha[12] + - afSourceAlpha[13]; - - float fWeightSumLR = afSourceAlpha[10] + - afSourceAlpha[11] + - afSourceAlpha[14] + - afSourceAlpha[15]; - - ColorFloatRGBA frgbaSumLeft = frgbaSumUL + frgbaSumLL; - ColorFloatRGBA frgbaSumRight = frgbaSumUR + frgbaSumLR; - ColorFloatRGBA frgbaSumTop = frgbaSumUL + frgbaSumUR; - ColorFloatRGBA frgbaSumBottom = frgbaSumLL + frgbaSumLR; - - float fWeightSumLeft = fWeightSumUL + fWeightSumLL; - float fWeightSumRight = fWeightSumUR + fWeightSumLR; - float fWeightSumTop = fWeightSumUL + fWeightSumUR; - float fWeightSumBottom = fWeightSumLL + fWeightSumLR; - - // check to see if there is at least 1 pixel with non-zero alpha - // completely transparent block should not make it to this code - assert((fWeightSumLeft + fWeightSumRight) > 0.0f); - assert((fWeightSumTop + fWeightSumBottom) > 0.0f); - - if (fWeightSumLeft > 0.0f) - { - m_frgbaSourceAverageLeft = frgbaSumLeft * (1.0f/fWeightSumLeft); - } - if (fWeightSumRight > 0.0f) - { - m_frgbaSourceAverageRight = frgbaSumRight * (1.0f/fWeightSumRight); - } - if (fWeightSumTop > 0.0f) - { - m_frgbaSourceAverageTop = frgbaSumTop * (1.0f/fWeightSumTop); - } - if (fWeightSumBottom > 0.0f) - { - m_frgbaSourceAverageBottom = frgbaSumBottom * (1.0f/fWeightSumBottom); - } - - if (fWeightSumLeft == 0.0f) - { - assert(fWeightSumRight > 0.0f); - m_frgbaSourceAverageLeft = m_frgbaSourceAverageRight; - } - if (fWeightSumRight == 0.0f) - { - assert(fWeightSumLeft > 0.0f); - m_frgbaSourceAverageRight = m_frgbaSourceAverageLeft; - } - if (fWeightSumTop == 0.0f) - { - assert(fWeightSumBottom > 0.0f); - m_frgbaSourceAverageTop = m_frgbaSourceAverageBottom; - } - if (fWeightSumBottom == 0.0f) - { - assert(fWeightSumTop > 0.0f); - m_frgbaSourceAverageBottom = m_frgbaSourceAverageTop; - } - } - - - - if (DEBUG_PRINT) - { - printf("\ntarget: [%.2f,%.2f,%.2f] [%.2f,%.2f,%.2f] [%.2f,%.2f,%.2f] [%.2f,%.2f,%.2f]\n", - m_frgbaSourceAverageLeft.fR, m_frgbaSourceAverageLeft.fG, m_frgbaSourceAverageLeft.fB, - m_frgbaSourceAverageRight.fR, m_frgbaSourceAverageRight.fG, m_frgbaSourceAverageRight.fB, - m_frgbaSourceAverageTop.fR, m_frgbaSourceAverageTop.fG, m_frgbaSourceAverageTop.fB, - m_frgbaSourceAverageBottom.fR, m_frgbaSourceAverageBottom.fG, m_frgbaSourceAverageBottom.fB); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try an ETC1 differential mode encoding - // use a_boolFlip to set the encoding F bit - // use a_uiRadius to alter basecolor components in the range[-a_uiRadius:a_uiRadius] - // use a_iGrayOffset1 and a_iGrayOffset2 to offset the basecolor to search for degenerate encodings - // replace the encoding if the encoding error is less than previous encoding - // - void Block4x4Encoding_ETC1::TryDifferential(bool a_boolFlip, unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2) - { - - ColorFloatRGBA frgbaColor1; - ColorFloatRGBA frgbaColor2; - - const unsigned int *pauiPixelMapping1; - const unsigned int *pauiPixelMapping2; - - if (a_boolFlip) - { - frgbaColor1 = m_frgbaSourceAverageTop; - frgbaColor2 = m_frgbaSourceAverageBottom; - - pauiPixelMapping1 = s_auiTopPixelMapping; - pauiPixelMapping2 = s_auiBottomPixelMapping; - } - else - { - frgbaColor1 = m_frgbaSourceAverageLeft; - frgbaColor2 = m_frgbaSourceAverageRight; - - pauiPixelMapping1 = s_auiLeftPixelMapping; - pauiPixelMapping2 = s_auiRightPixelMapping; - } - - DifferentialTrys trys(frgbaColor1, frgbaColor2, pauiPixelMapping1, pauiPixelMapping2, - a_uiRadius, a_iGrayOffset1, a_iGrayOffset2); - - Block4x4Encoding_ETC1 encodingTry = *this; - encodingTry.m_boolFlip = a_boolFlip; - - encodingTry.TryDifferentialHalf(&trys.m_half1); - encodingTry.TryDifferentialHalf(&trys.m_half2); - - // find best halves that are within differential range - DifferentialTrys::Try *ptryBest1 = nullptr; - DifferentialTrys::Try *ptryBest2 = nullptr; - encodingTry.m_fError = FLT_MAX; - - // see if the best of each half are in differential range - int iDRed = trys.m_half2.m_ptryBest->m_iRed - trys.m_half1.m_ptryBest->m_iRed; - int iDGreen = trys.m_half2.m_ptryBest->m_iGreen - trys.m_half1.m_ptryBest->m_iGreen; - int iDBlue = trys.m_half2.m_ptryBest->m_iBlue - trys.m_half1.m_ptryBest->m_iBlue; - if (iDRed >= -4 && iDRed <= 3 && iDGreen >= -4 && iDGreen <= 3 && iDBlue >= -4 && iDBlue <= 3) - { - ptryBest1 = trys.m_half1.m_ptryBest; - ptryBest2 = trys.m_half2.m_ptryBest; - encodingTry.m_fError = trys.m_half1.m_ptryBest->m_fError + trys.m_half2.m_ptryBest->m_fError; - } - else - { - // else, find the next best halves that are in differential range - for (DifferentialTrys::Try *ptry1 = &trys.m_half1.m_atry[0]; - ptry1 < &trys.m_half1.m_atry[trys.m_half1.m_uiTrys]; - ptry1++) - { - for (DifferentialTrys::Try *ptry2 = &trys.m_half2.m_atry[0]; - ptry2 < &trys.m_half2.m_atry[trys.m_half2.m_uiTrys]; - ptry2++) - { - iDRed = ptry2->m_iRed - ptry1->m_iRed; - bool boolValidRedDelta = iDRed <= 3 && iDRed >= -4; - iDGreen = ptry2->m_iGreen - ptry1->m_iGreen; - bool boolValidGreenDelta = iDGreen <= 3 && iDGreen >= -4; - iDBlue = ptry2->m_iBlue - ptry1->m_iBlue; - bool boolValidBlueDelta = iDBlue <= 3 && iDBlue >= -4; - - if (boolValidRedDelta && boolValidGreenDelta && boolValidBlueDelta) - { - float fError = ptry1->m_fError + ptry2->m_fError; - - if (fError < encodingTry.m_fError) - { - encodingTry.m_fError = fError; - - ptryBest1 = ptry1; - ptryBest2 = ptry2; - } - } - - } - } - assert(encodingTry.m_fError < FLT_MAX); - assert(ptryBest1 != nullptr); - assert(ptryBest2 != nullptr); - } - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_ETC1; - m_boolDiff = true; - m_boolFlip = encodingTry.m_boolFlip; - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)ptryBest1->m_iRed, (unsigned char)ptryBest1->m_iGreen, (unsigned char)ptryBest1->m_iBlue); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)ptryBest2->m_iRed, (unsigned char)ptryBest2->m_iGreen, (unsigned char)ptryBest2->m_iBlue); - m_uiCW1 = ptryBest1->m_uiCW; - m_uiCW2 = ptryBest2->m_uiCW; - - for (unsigned int uiPixelOrder = 0; uiPixelOrder < PIXELS / 2; uiPixelOrder++) - { - unsigned int uiPixel1 = pauiPixelMapping1[uiPixelOrder]; - unsigned int uiPixel2 = pauiPixelMapping2[uiPixelOrder]; - - unsigned int uiSelector1 = ptryBest1->m_auiSelectors[uiPixelOrder]; - unsigned int uiSelector2 = ptryBest2->m_auiSelectors[uiPixelOrder]; - - m_auiSelectors[uiPixel1] = uiSelector1; - m_auiSelectors[uiPixel2] = ptryBest2->m_auiSelectors[uiPixelOrder]; - - float fDeltaRGB1 = s_aafCwTable[m_uiCW1][uiSelector1]; - float fDeltaRGB2 = s_aafCwTable[m_uiCW2][uiSelector2]; - - m_afrgbaDecodedColors[uiPixel1] = (m_frgbaColor1 + fDeltaRGB1).ClampRGB(); - m_afrgbaDecodedColors[uiPixel2] = (m_frgbaColor2 + fDeltaRGB2).ClampRGB(); - } - - m_fError1 = ptryBest1->m_fError; - m_fError2 = ptryBest2->m_fError; - m_boolSeverelyBentDifferentialColors = trys.m_boolSeverelyBentColors; - m_fError = m_fError1 + m_fError2; - - // sanity check - { - int iRed1 = m_frgbaColor1.IntRed(31.0f); - int iGreen1 = m_frgbaColor1.IntGreen(31.0f); - int iBlue1 = m_frgbaColor1.IntBlue(31.0f); - - int iRed2 = m_frgbaColor2.IntRed(31.0f); - int iGreen2 = m_frgbaColor2.IntGreen(31.0f); - int iBlue2 = m_frgbaColor2.IntBlue(31.0f); - - iDRed = iRed2 - iRed1; - iDGreen = iGreen2 - iGreen1; - iDBlue = iBlue2 - iBlue1; - - assert(iDRed >= -4 && iDRed < 4); - assert(iDGreen >= -4 && iDGreen < 4); - assert(iDBlue >= -4 && iDBlue < 4); - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try an ETC1 differential mode encoding for a half of a 4x4 block - // vary the basecolor components using a radius - // - void Block4x4Encoding_ETC1::TryDifferentialHalf(DifferentialTrys::Half *a_phalf) - { - - a_phalf->m_ptryBest = nullptr; - float fBestTryError = FLT_MAX; - - a_phalf->m_uiTrys = 0; - for (int iRed = a_phalf->m_iRed - (int)a_phalf->m_uiRadius; - iRed <= a_phalf->m_iRed + (int)a_phalf->m_uiRadius; - iRed++) - { - assert(iRed >= 0 && iRed <= 31); - - for (int iGreen = a_phalf->m_iGreen - (int)a_phalf->m_uiRadius; - iGreen <= a_phalf->m_iGreen + (int)a_phalf->m_uiRadius; - iGreen++) - { - assert(iGreen >= 0 && iGreen <= 31); - - for (int iBlue = a_phalf->m_iBlue - (int)a_phalf->m_uiRadius; - iBlue <= a_phalf->m_iBlue + (int)a_phalf->m_uiRadius; - iBlue++) - { - assert(iBlue >= 0 && iBlue <= 31); - - DifferentialTrys::Try *ptry = &a_phalf->m_atry[a_phalf->m_uiTrys]; - assert(ptry < &a_phalf->m_atry[DifferentialTrys::Half::MAX_TRYS]); - - ptry->m_iRed = iRed; - ptry->m_iGreen = iGreen; - ptry->m_iBlue = iBlue; - ptry->m_fError = FLT_MAX; - ColorFloatRGBA frgbaColor = ColorFloatRGBA::ConvertFromRGB5((unsigned char)iRed, (unsigned char)iGreen, (unsigned char)iBlue); - - // try each CW - for (unsigned int uiCW = 0; uiCW < CW_RANGES; uiCW++) - { - unsigned int auiPixelSelectors[PIXELS / 2]; - ColorFloatRGBA afrgbaDecodedPixels[PIXELS / 2]; - float afPixelErrors[PIXELS / 2] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - - // pre-compute decoded pixels for each selector - ColorFloatRGBA afrgbaSelectors[SELECTORS]; - assert(SELECTORS == 4); - afrgbaSelectors[0] = (frgbaColor + s_aafCwTable[uiCW][0]).ClampRGB(); - afrgbaSelectors[1] = (frgbaColor + s_aafCwTable[uiCW][1]).ClampRGB(); - afrgbaSelectors[2] = (frgbaColor + s_aafCwTable[uiCW][2]).ClampRGB(); - afrgbaSelectors[3] = (frgbaColor + s_aafCwTable[uiCW][3]).ClampRGB(); - - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ColorFloatRGBA *pfrgbaSourcePixel = &m_pafrgbaSource[a_phalf->m_pauiPixelMapping[uiPixel]]; - ColorFloatRGBA frgbaDecodedPixel; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - frgbaDecodedPixel = afrgbaSelectors[uiSelector]; - - float fPixelError; - - fPixelError = CalcPixelError(frgbaDecodedPixel, m_afDecodedAlphas[a_phalf->m_pauiPixelMapping[uiPixel]], - *pfrgbaSourcePixel); - - if (fPixelError < afPixelErrors[uiPixel]) - { - auiPixelSelectors[uiPixel] = uiSelector; - afrgbaDecodedPixels[uiPixel] = frgbaDecodedPixel; - afPixelErrors[uiPixel] = fPixelError; - } - - } - } - - // add up all pixel errors - float fCWError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - fCWError += afPixelErrors[uiPixel]; - } - - // if best CW so far - if (fCWError < ptry->m_fError) - { - ptry->m_uiCW = uiCW; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ptry->m_auiSelectors[uiPixel] = auiPixelSelectors[uiPixel]; - } - ptry->m_fError = fCWError; - } - - } - - if (ptry->m_fError < fBestTryError) - { - a_phalf->m_ptryBest = ptry; - fBestTryError = ptry->m_fError; - } - - assert(ptry->m_fError < FLT_MAX); - - a_phalf->m_uiTrys++; - } - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try an ETC1 individual mode encoding - // use a_boolFlip to set the encoding F bit - // use a_uiRadius to alter basecolor components in the range[-a_uiRadius:a_uiRadius] - // replace the encoding if the encoding error is less than previous encoding - // - void Block4x4Encoding_ETC1::TryIndividual(bool a_boolFlip, unsigned int a_uiRadius) - { - - ColorFloatRGBA frgbaColor1; - ColorFloatRGBA frgbaColor2; - - const unsigned int *pauiPixelMapping1; - const unsigned int *pauiPixelMapping2; - - if (a_boolFlip) - { - frgbaColor1 = m_frgbaSourceAverageTop; - frgbaColor2 = m_frgbaSourceAverageBottom; - - pauiPixelMapping1 = s_auiTopPixelMapping; - pauiPixelMapping2 = s_auiBottomPixelMapping; - } - else - { - frgbaColor1 = m_frgbaSourceAverageLeft; - frgbaColor2 = m_frgbaSourceAverageRight; - - pauiPixelMapping1 = s_auiLeftPixelMapping; - pauiPixelMapping2 = s_auiRightPixelMapping; - } - - IndividualTrys trys(frgbaColor1, frgbaColor2, pauiPixelMapping1, pauiPixelMapping2, a_uiRadius); - - Block4x4Encoding_ETC1 encodingTry = *this; - encodingTry.m_boolFlip = a_boolFlip; - - encodingTry.TryIndividualHalf(&trys.m_half1); - encodingTry.TryIndividualHalf(&trys.m_half2); - - // use the best of each half - IndividualTrys::Try *ptryBest1 = trys.m_half1.m_ptryBest; - IndividualTrys::Try *ptryBest2 = trys.m_half2.m_ptryBest; - encodingTry.m_fError = trys.m_half1.m_ptryBest->m_fError + trys.m_half2.m_ptryBest->m_fError; - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_ETC1; - m_boolDiff = false; - m_boolFlip = encodingTry.m_boolFlip; - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)ptryBest1->m_iRed, (unsigned char)ptryBest1->m_iGreen, (unsigned char)ptryBest1->m_iBlue); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)ptryBest2->m_iRed, (unsigned char)ptryBest2->m_iGreen, (unsigned char)ptryBest2->m_iBlue); - m_uiCW1 = ptryBest1->m_uiCW; - m_uiCW2 = ptryBest2->m_uiCW; - - for (unsigned int uiPixelOrder = 0; uiPixelOrder < PIXELS / 2; uiPixelOrder++) - { - unsigned int uiPixel1 = pauiPixelMapping1[uiPixelOrder]; - unsigned int uiPixel2 = pauiPixelMapping2[uiPixelOrder]; - - unsigned int uiSelector1 = ptryBest1->m_auiSelectors[uiPixelOrder]; - unsigned int uiSelector2 = ptryBest2->m_auiSelectors[uiPixelOrder]; - - m_auiSelectors[uiPixel1] = uiSelector1; - m_auiSelectors[uiPixel2] = ptryBest2->m_auiSelectors[uiPixelOrder]; - - float fDeltaRGB1 = s_aafCwTable[m_uiCW1][uiSelector1]; - float fDeltaRGB2 = s_aafCwTable[m_uiCW2][uiSelector2]; - - m_afrgbaDecodedColors[uiPixel1] = (m_frgbaColor1 + fDeltaRGB1).ClampRGB(); - m_afrgbaDecodedColors[uiPixel2] = (m_frgbaColor2 + fDeltaRGB2).ClampRGB(); - } - - m_fError1 = ptryBest1->m_fError; - m_fError2 = ptryBest2->m_fError; - m_fError = m_fError1 + m_fError2; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try an ETC1 differential mode encoding for a half of a 4x4 block - // vary the basecolor components using a radius - // - void Block4x4Encoding_ETC1::TryIndividualHalf(IndividualTrys::Half *a_phalf) - { - - a_phalf->m_ptryBest = nullptr; - float fBestTryError = FLT_MAX; - - a_phalf->m_uiTrys = 0; - for (int iRed = a_phalf->m_iRed - (int)a_phalf->m_uiRadius; - iRed <= a_phalf->m_iRed + (int)a_phalf->m_uiRadius; - iRed++) - { - assert(iRed >= 0 && iRed <= 15); - - for (int iGreen = a_phalf->m_iGreen - (int)a_phalf->m_uiRadius; - iGreen <= a_phalf->m_iGreen + (int)a_phalf->m_uiRadius; - iGreen++) - { - assert(iGreen >= 0 && iGreen <= 15); - - for (int iBlue = a_phalf->m_iBlue - (int)a_phalf->m_uiRadius; - iBlue <= a_phalf->m_iBlue + (int)a_phalf->m_uiRadius; - iBlue++) - { - assert(iBlue >= 0 && iBlue <= 15); - - IndividualTrys::Try *ptry = &a_phalf->m_atry[a_phalf->m_uiTrys]; - assert(ptry < &a_phalf->m_atry[IndividualTrys::Half::MAX_TRYS]); - - ptry->m_iRed = iRed; - ptry->m_iGreen = iGreen; - ptry->m_iBlue = iBlue; - ptry->m_fError = FLT_MAX; - ColorFloatRGBA frgbaColor = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed, (unsigned char)iGreen, (unsigned char)iBlue); - - // try each CW - for (unsigned int uiCW = 0; uiCW < CW_RANGES; uiCW++) - { - unsigned int auiPixelSelectors[PIXELS / 2]; - ColorFloatRGBA afrgbaDecodedPixels[PIXELS / 2]; - float afPixelErrors[PIXELS / 2] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - - // pre-compute decoded pixels for each selector - ColorFloatRGBA afrgbaSelectors[SELECTORS]; - assert(SELECTORS == 4); - afrgbaSelectors[0] = (frgbaColor + s_aafCwTable[uiCW][0]).ClampRGB(); - afrgbaSelectors[1] = (frgbaColor + s_aafCwTable[uiCW][1]).ClampRGB(); - afrgbaSelectors[2] = (frgbaColor + s_aafCwTable[uiCW][2]).ClampRGB(); - afrgbaSelectors[3] = (frgbaColor + s_aafCwTable[uiCW][3]).ClampRGB(); - - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ColorFloatRGBA *pfrgbaSourcePixel = &m_pafrgbaSource[a_phalf->m_pauiPixelMapping[uiPixel]]; - ColorFloatRGBA frgbaDecodedPixel; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - frgbaDecodedPixel = afrgbaSelectors[uiSelector]; - - float fPixelError; - - fPixelError = CalcPixelError(frgbaDecodedPixel, m_afDecodedAlphas[a_phalf->m_pauiPixelMapping[uiPixel]], - *pfrgbaSourcePixel); - - if (fPixelError < afPixelErrors[uiPixel]) - { - auiPixelSelectors[uiPixel] = uiSelector; - afrgbaDecodedPixels[uiPixel] = frgbaDecodedPixel; - afPixelErrors[uiPixel] = fPixelError; - } - - } - } - - // add up all pixel errors - float fCWError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - fCWError += afPixelErrors[uiPixel]; - } - - // if best CW so far - if (fCWError < ptry->m_fError) - { - ptry->m_uiCW = uiCW; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ptry->m_auiSelectors[uiPixel] = auiPixelSelectors[uiPixel]; - } - ptry->m_fError = fCWError; - } - - } - - if (ptry->m_fError < fBestTryError) - { - a_phalf->m_ptryBest = ptry; - fBestTryError = ptry->m_fError; - } - - assert(ptry->m_fError < FLT_MAX); - - a_phalf->m_uiTrys++; - } - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 1 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_ETC1::TryDegenerates1(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -2, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 2, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 0, 2); - TryDifferential(m_boolMostLikelyFlip, 1, 0, -2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 2 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_ETC1::TryDegenerates2(void) - { - - TryDifferential(!m_boolMostLikelyFlip, 1, -2, 0); - TryDifferential(!m_boolMostLikelyFlip, 1, 2, 0); - TryDifferential(!m_boolMostLikelyFlip, 1, 0, 2); - TryDifferential(!m_boolMostLikelyFlip, 1, 0, -2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 3 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_ETC1::TryDegenerates3(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -2, -2); - TryDifferential(m_boolMostLikelyFlip, 1, -2, 2); - TryDifferential(m_boolMostLikelyFlip, 1, 2, -2); - TryDifferential(m_boolMostLikelyFlip, 1, 2, 2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 4 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_ETC1::TryDegenerates4(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -4, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 4, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 0, 4); - TryDifferential(m_boolMostLikelyFlip, 1, 0, -4); - - } - - // ---------------------------------------------------------------------------------------------------- - // find the best selector for each pixel based on a particular basecolor and CW that have been previously set - // calculate the selectors for each half of the block separately - // set the block error as the sum of each half's error - // - void Block4x4Encoding_ETC1::CalculateSelectors() - { - if (m_boolFlip) - { - CalculateHalfOfTheSelectors(0, s_auiTopPixelMapping); - CalculateHalfOfTheSelectors(1, s_auiBottomPixelMapping); - } - else - { - CalculateHalfOfTheSelectors(0, s_auiLeftPixelMapping); - CalculateHalfOfTheSelectors(1, s_auiRightPixelMapping); - } - - m_fError = m_fError1 + m_fError2; - } - - // ---------------------------------------------------------------------------------------------------- - // choose best selectors for half of the block - // calculate the error for half of the block - // - void Block4x4Encoding_ETC1::CalculateHalfOfTheSelectors(unsigned int a_uiHalf, - const unsigned int *pauiPixelMapping) - { - static const bool DEBUG_PRINT = false; - - ColorFloatRGBA *pfrgbaColor = a_uiHalf ? &m_frgbaColor2 : &m_frgbaColor1; - unsigned int *puiCW = a_uiHalf ? &m_uiCW2 : &m_uiCW1; - - float *pfHalfError = a_uiHalf ? &m_fError2 : &m_fError1; - *pfHalfError = FLT_MAX; - - // try each CW - for (unsigned int uiCW = 0; uiCW < CW_RANGES; uiCW++) - { - if (DEBUG_PRINT) - { - printf("\ncw=%u\n", uiCW); - } - - unsigned int auiPixelSelectors[PIXELS / 2]; - ColorFloatRGBA afrgbaDecodedPixels[PIXELS / 2]; - float afPixelErrors[PIXELS / 2] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - if (DEBUG_PRINT) - { - printf("\tsource [%.2f,%.2f,%.2f]\n", m_pafrgbaSource[pauiPixelMapping[uiPixel]].fR, - m_pafrgbaSource[pauiPixelMapping[uiPixel]].fG, m_pafrgbaSource[pauiPixelMapping[uiPixel]].fB); - } - - ColorFloatRGBA *pfrgbaSourcePixel = &m_pafrgbaSource[pauiPixelMapping[uiPixel]]; - ColorFloatRGBA frgbaDecodedPixel; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - float fDeltaRGB = s_aafCwTable[uiCW][uiSelector]; - - frgbaDecodedPixel = (*pfrgbaColor + fDeltaRGB).ClampRGB(); - - float fPixelError; - - fPixelError = CalcPixelError(frgbaDecodedPixel, m_afDecodedAlphas[pauiPixelMapping[uiPixel]], - *pfrgbaSourcePixel); - - if (DEBUG_PRINT) - { - printf("\tpixel %u, index %u [%.2f,%.2f,%.2f], error %.2f", uiPixel, uiSelector, - frgbaDecodedPixel.fR, - frgbaDecodedPixel.fG, - frgbaDecodedPixel.fB, - fPixelError); - } - - if (fPixelError < afPixelErrors[uiPixel]) - { - if (DEBUG_PRINT) - { - printf(" *"); - } - - auiPixelSelectors[uiPixel] = uiSelector; - afrgbaDecodedPixels[uiPixel] = frgbaDecodedPixel; - afPixelErrors[uiPixel] = fPixelError; - } - - if (DEBUG_PRINT) - { - printf("\n"); - } - } - } - - // add up all pixel errors - float fCWError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - fCWError += afPixelErrors[uiPixel]; - } - if (DEBUG_PRINT) - { - printf("\terror %.2f\n", fCWError); - } - - // if best CW so far - if (fCWError < *pfHalfError) - { - *pfHalfError = fCWError; - *puiCW = uiCW; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - m_auiSelectors[pauiPixelMapping[uiPixel]] = auiPixelSelectors[uiPixel]; - m_afrgbaDecodedColors[pauiPixelMapping[uiPixel]] = afrgbaDecodedPixels[uiPixel]; - } - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_ETC1::SetEncodingBits(void) - { - assert(m_mode == MODE_ETC1); - - if (m_boolDiff) - { - int iRed1 = m_frgbaColor1.IntRed(31.0f); - int iGreen1 = m_frgbaColor1.IntGreen(31.0f); - int iBlue1 = m_frgbaColor1.IntBlue(31.0f); - - int iRed2 = m_frgbaColor2.IntRed(31.0f); - int iGreen2 = m_frgbaColor2.IntGreen(31.0f); - int iBlue2 = m_frgbaColor2.IntBlue(31.0f); - - int iDRed2 = iRed2 - iRed1; - int iDGreen2 = iGreen2 - iGreen1; - int iDBlue2 = iBlue2 - iBlue1; - - assert(iDRed2 >= -4 && iDRed2 < 4); - assert(iDGreen2 >= -4 && iDGreen2 < 4); - assert(iDBlue2 >= -4 && iDBlue2 < 4); - - m_pencodingbitsRGB8->differential.red1 = (unsigned int)iRed1; - m_pencodingbitsRGB8->differential.green1 = (unsigned int)iGreen1; - m_pencodingbitsRGB8->differential.blue1 = (unsigned int)iBlue1; - - m_pencodingbitsRGB8->differential.dred2 = iDRed2; - m_pencodingbitsRGB8->differential.dgreen2 = iDGreen2; - m_pencodingbitsRGB8->differential.dblue2 = iDBlue2; - } - else - { - m_pencodingbitsRGB8->individual.red1 = (unsigned int)m_frgbaColor1.IntRed(15.0f); - m_pencodingbitsRGB8->individual.green1 = (unsigned int)m_frgbaColor1.IntGreen(15.0f); - m_pencodingbitsRGB8->individual.blue1 = (unsigned int)m_frgbaColor1.IntBlue(15.0f); - - m_pencodingbitsRGB8->individual.red2 = (unsigned int)m_frgbaColor2.IntRed(15.0f); - m_pencodingbitsRGB8->individual.green2 = (unsigned int)m_frgbaColor2.IntGreen(15.0f); - m_pencodingbitsRGB8->individual.blue2 = (unsigned int)m_frgbaColor2.IntBlue(15.0f); - } - - m_pencodingbitsRGB8->individual.cw1 = m_uiCW1; - m_pencodingbitsRGB8->individual.cw2 = m_uiCW2; - - SetEncodingBits_Selectors(); - - m_pencodingbitsRGB8->individual.diff = (unsigned int)m_boolDiff; - m_pencodingbitsRGB8->individual.flip = (unsigned int)m_boolFlip; - - } - - // ---------------------------------------------------------------------------------------------------- - // set the selectors in the encoding bits - // - void Block4x4Encoding_ETC1::SetEncodingBits_Selectors(void) - { - - m_pencodingbitsRGB8->individual.selectors = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiSelector = m_auiSelectors[uiPixel]; - - // set index msb - m_pencodingbitsRGB8->individual.selectors |= (uiSelector >> 1) << (uiPixel ^ 8); - - // set index lsb - m_pencodingbitsRGB8->individual.selectors |= (uiSelector & 1) << ((16 + uiPixel) ^ 8); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the decoded colors and decoded alpha based on the encoding state - // - void Block4x4Encoding_ETC1::Decode(void) - { - - const unsigned int *pauiPixelOrder = m_boolFlip ? s_auiPixelOrderFlip1 : s_auiPixelOrderFlip0; - - for (unsigned int uiPixelOrder = 0; uiPixelOrder < PIXELS; uiPixelOrder++) - { - ColorFloatRGBA *pfrgbaCenter = uiPixelOrder < 8 ? &m_frgbaColor1 : &m_frgbaColor2; - unsigned int uiCW = uiPixelOrder < 8 ? m_uiCW1 : m_uiCW2; - - unsigned int uiPixel = pauiPixelOrder[uiPixelOrder]; - - float fDelta = s_aafCwTable[uiCW][m_auiSelectors[uiPixel]]; - m_afrgbaDecodedColors[uiPixel] = (*pfrgbaCenter + fDelta).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.h deleted file mode 100644 index c0dc84d5d5..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_ETC1.h +++ /dev/null @@ -1,186 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding.h" -#include "EtcBlock4x4EncodingBits.h" -#include "EtcDifferentialTrys.h" -#include "EtcIndividualTrys.h" - -namespace Etc -{ - - // base class for Block4x4Encoding_RGB8 - class Block4x4Encoding_ETC1 : public Block4x4Encoding - { - public: - - Block4x4Encoding_ETC1(void); - virtual ~Block4x4Encoding_ETC1(void); - - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - - unsigned char *a_paucEncodingBits, - ErrorMetric a_errormetric); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - inline virtual bool GetFlip(void) - { - return m_boolFlip; - } - - inline virtual bool IsDifferential(void) - { - return m_boolDiff; - } - - virtual void SetEncodingBits(void); - - void Decode(void); - - inline ColorFloatRGBA GetColor1(void) const - { - return m_frgbaColor1; - } - - inline ColorFloatRGBA GetColor2(void) const - { - return m_frgbaColor2; - } - - inline const unsigned int * GetSelectors(void) const - { - return m_auiSelectors; - } - - inline unsigned int GetCW1(void) const - { - return m_uiCW1; - } - - inline unsigned int GetCW2(void) const - { - return m_uiCW2; - } - - inline bool HasSeverelyBentDifferentialColors(void) const - { - return m_boolSeverelyBentDifferentialColors; - } - - protected: - - static const unsigned int s_auiPixelOrderFlip0[PIXELS]; - static const unsigned int s_auiPixelOrderFlip1[PIXELS]; - static const unsigned int s_auiPixelOrderHScan[PIXELS]; - - static const unsigned int s_auiLeftPixelMapping[8]; - static const unsigned int s_auiRightPixelMapping[8]; - static const unsigned int s_auiTopPixelMapping[8]; - static const unsigned int s_auiBottomPixelMapping[8]; - - static const unsigned int SELECTOR_BITS = 2; - static const unsigned int SELECTORS = 1 << SELECTOR_BITS; - - static const unsigned int CW_BITS = 3; - static const unsigned int CW_RANGES = 1 << CW_BITS; - - static float s_aafCwTable[CW_RANGES][SELECTORS]; - static unsigned char s_aucDifferentialCwRange[256]; - - static const int MAX_DIFFERENTIAL = 3; - static const int MIN_DIFFERENTIAL = -4; - - void InitFromEncodingBits_Selectors(void); - - void PerformFirstIteration(void); - void CalculateMostLikelyFlip(void); - - void TryDifferential(bool a_boolFlip, unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2); - void TryDifferentialHalf(DifferentialTrys::Half *a_phalf); - - void TryIndividual(bool a_boolFlip, unsigned int a_uiRadius); - void TryIndividualHalf(IndividualTrys::Half *a_phalf); - - void TryDegenerates1(void); - void TryDegenerates2(void); - void TryDegenerates3(void); - void TryDegenerates4(void); - - void CalculateSelectors(); - void CalculateHalfOfTheSelectors(unsigned int a_uiHalf, - const unsigned int *pauiPixelMapping); - - // calculate the distance2 of r_frgbaPixel from r_frgbaTarget's gray line - inline float CalcGrayDistance2(ColorFloatRGBA &r_frgbaPixel, - ColorFloatRGBA &r_frgbaTarget) - { - float fDeltaGray = ((r_frgbaPixel.fR - r_frgbaTarget.fR) + - (r_frgbaPixel.fG - r_frgbaTarget.fG) + - (r_frgbaPixel.fB - r_frgbaTarget.fB)) / 3.0f; - - ColorFloatRGBA frgbaPointOnGrayLine = (r_frgbaTarget + fDeltaGray).ClampRGB(); - - float fDR = r_frgbaPixel.fR - frgbaPointOnGrayLine.fR; - float fDG = r_frgbaPixel.fG - frgbaPointOnGrayLine.fG; - float fDB = r_frgbaPixel.fB - frgbaPointOnGrayLine.fB; - - return (fDR*fDR) + (fDG*fDG) + (fDB*fDB); - } - - void SetEncodingBits_Selectors(void); - - // intermediate encoding - bool m_boolDiff; - bool m_boolFlip; - ColorFloatRGBA m_frgbaColor1; - ColorFloatRGBA m_frgbaColor2; - unsigned int m_uiCW1; - unsigned int m_uiCW2; - unsigned int m_auiSelectors[PIXELS]; - - // state shared between iterations - ColorFloatRGBA m_frgbaSourceAverageLeft; - ColorFloatRGBA m_frgbaSourceAverageRight; - ColorFloatRGBA m_frgbaSourceAverageTop; - ColorFloatRGBA m_frgbaSourceAverageBottom; - bool m_boolMostLikelyFlip; - - // stats - float m_fError1; // error for Etc1 half 1 - float m_fError2; // error for Etc1 half 2 - bool m_boolSeverelyBentDifferentialColors; // only valid if m_boolDiff; - - // final encoding - Block4x4EncodingBits_RGB8 *m_pencodingbitsRGB8; // or RGB8 portion of Block4x4EncodingBits_RGB8A8 - - private: - - void CalculateSourceAverages(void); - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.cpp deleted file mode 100644 index 4c012fbbf1..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.cpp +++ /dev/null @@ -1,429 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_R11.cpp - -Block4x4Encoding_R11 is the encoder to use when targetting file format R11 and SR11 (signed R11). - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_R11.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <float.h> -#include <limits> - -namespace Etc -{ - - // modifier values to use for R11, SR11, RG11 and SRG11 - float Block4x4Encoding_R11::s_aafModifierTable[MODIFIER_TABLE_ENTRYS][SELECTORS] - { - { -3.0f / 255.0f, -6.0f / 255.0f, -9.0f / 255.0f, -15.0f / 255.0f, 2.0f / 255.0f, 5.0f / 255.0f, 8.0f / 255.0f, 14.0f / 255.0f }, - { -3.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, -13.0f / 255.0f, 2.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f, 12.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -13.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 12.0f / 255.0f }, - { -2.0f / 255.0f, -4.0f / 255.0f, -6.0f / 255.0f, -13.0f / 255.0f, 1.0f / 255.0f, 3.0f / 255.0f, 5.0f / 255.0f, 12.0f / 255.0f }, - - { -3.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -12.0f / 255.0f, 2.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 11.0f / 255.0f }, - { -3.0f / 255.0f, -7.0f / 255.0f, -9.0f / 255.0f, -11.0f / 255.0f, 2.0f / 255.0f, 6.0f / 255.0f, 8.0f / 255.0f, 10.0f / 255.0f }, - { -4.0f / 255.0f, -7.0f / 255.0f, -8.0f / 255.0f, -11.0f / 255.0f, 3.0f / 255.0f, 6.0f / 255.0f, 7.0f / 255.0f, 10.0f / 255.0f }, - { -3.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -11.0f / 255.0f, 2.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 10.0f / 255.0f }, - - { -2.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -4.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 3.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f }, - - { -3.0f / 255.0f, -4.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, 2.0f / 255.0f, 3.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f }, - { -1.0f / 255.0f, -2.0f / 255.0f, -3.0f / 255.0f, -10.0f / 255.0f, 0.0f / 255.0f, 1.0f / 255.0f, 2.0f / 255.0f, 9.0f / 255.0f }, - { -4.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -9.0f / 255.0f, 3.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 8.0f / 255.0f }, - { -3.0f / 255.0f, -5.0f / 255.0f, -7.0f / 255.0f, -9.0f / 255.0f, 2.0f / 255.0f, 4.0f / 255.0f, 6.0f / 255.0f, 8.0f / 255.0f } - }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_R11::Block4x4Encoding_R11(void) - { - - m_pencodingbitsR11 = nullptr; - - } - - Block4x4Encoding_R11::~Block4x4Encoding_R11(void) {} - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits - // - void Block4x4Encoding_R11::InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric) - { - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource,a_errormetric); - - m_pencodingbitsR11 = (Block4x4EncodingBits_R11 *)a_paucEncodingBits; - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_R11::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - m_pencodingbitsR11 = (Block4x4EncodingBits_R11 *)a_paucEncodingBits; - - // init RGB portion - Block4x4Encoding_RGB8::InitFromEncodingBits(a_pblockParent, - (unsigned char *)m_pencodingbitsR11, - a_pafrgbaSource, - a_errormetric); - - // init R11 portion - { - m_mode = MODE_R11; - if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_R11 || a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_fRedBase = (float)(signed char)m_pencodingbitsR11->data.base; - } - else - { - m_fRedBase = (float)(unsigned char)m_pencodingbitsR11->data.base; - } - m_fRedMultiplier = (float)m_pencodingbitsR11->data.multiplier; - m_uiRedModifierTableIndex = m_pencodingbitsR11->data.table; - - unsigned long long int ulliSelectorBits = 0; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors0 << 40; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors1 << 32; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors2 << 24; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors3 << 16; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors4 << 8; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsR11->data.selectors5; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - m_auiRedSelectors[uiPixel] = (ulliSelectorBits >> uiShift) & (SELECTORS - 1); - } - - // decode the red channel - // calc red error - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fDecodedPixelData = 0.0f; - if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::R11 || a_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - fDecodedPixelData = DecodePixelRed(m_fRedBase, m_fRedMultiplier, - m_uiRedModifierTableIndex, - m_auiRedSelectors[uiPixel]); - } - else if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_R11 || a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - fDecodedPixelData = DecodePixelRed(m_fRedBase + 128, m_fRedMultiplier, - m_uiRedModifierTableIndex, - m_auiRedSelectors[uiPixel]); - } - else - { - assert(0); - } - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(fDecodedPixelData, 0.0f, 0.0f, 1.0f); - } - CalcBlockError(); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_R11::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - m_mode = MODE_R11; - - switch (m_uiEncodingIterations) - { - case 0: - m_fError = FLT_MAX; - m_fRedBlockError = FLT_MAX; // artificially high value - CalculateR11(8, 0.0f, 0.0f); - m_fError = m_fRedBlockError; - break; - - case 1: - CalculateR11(8, 2.0f, 1.0f); - m_fError = m_fRedBlockError; - if (a_fEffort <= 24.5f) - { - m_boolDone = true; - } - break; - - case 2: - CalculateR11(8, 12.0f, 1.0f); - m_fError = m_fRedBlockError; - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 3: - CalculateR11(7, 6.0f, 1.0f); - m_fError = m_fRedBlockError; - break; - - case 4: - CalculateR11(6, 3.0f, 1.0f); - m_fError = m_fRedBlockError; - break; - - case 5: - CalculateR11(5, 1.0f, 0.0f); - m_fError = m_fRedBlockError; - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - SetDoneIfPerfect(); - } - - // ---------------------------------------------------------------------------------------------------- - // find the best combination of base color, multiplier and selectors - // - // a_uiSelectorsUsed limits the number of selector combinations to try - // a_fBaseRadius limits the range of base colors to try - // a_fMultiplierRadius limits the range of multipliers to try - // - void Block4x4Encoding_R11::CalculateR11(unsigned int a_uiSelectorsUsed, - float a_fBaseRadius, float a_fMultiplierRadius) - { - // maps from virtual (monotonic) selector to ETC selector - static const unsigned int auiVirtualSelectorMap[8] = {3, 2, 1, 0, 4, 5, 6, 7}; - - // find min/max red - float fMinRed = 1.0f; - float fMaxRed = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - // ignore border pixels - float fAlpha = m_pafrgbaSource[uiPixel].fA; - if (isnan(fAlpha)) - { - continue; - } - - float fRed = m_pafrgbaSource[uiPixel].fR; - - if (fRed < fMinRed) - { - fMinRed = fRed; - } - if (fRed > fMaxRed) - { - fMaxRed = fRed; - } - } - assert(fMinRed <= fMaxRed); - - float fRedRange = (fMaxRed - fMinRed); - - // try each modifier table entry - for (unsigned int uiTableEntry = 0; uiTableEntry < MODIFIER_TABLE_ENTRYS; uiTableEntry++) - { - for (unsigned int uiMinVirtualSelector = 0; - uiMinVirtualSelector <= (8- a_uiSelectorsUsed); - uiMinVirtualSelector++) - { - unsigned int uiMaxVirtualSelector = uiMinVirtualSelector + a_uiSelectorsUsed - 1; - - unsigned int uiMinSelector = auiVirtualSelectorMap[uiMinVirtualSelector]; - unsigned int uiMaxSelector = auiVirtualSelectorMap[uiMaxVirtualSelector]; - - float fTableEntryCenter = -s_aafModifierTable[uiTableEntry][uiMinSelector]; - - float fTableEntryRange = s_aafModifierTable[uiTableEntry][uiMaxSelector] - - s_aafModifierTable[uiTableEntry][uiMinSelector]; - - float fCenterRatio = fTableEntryCenter / fTableEntryRange; - - float fCenter = fMinRed + fCenterRatio*fRedRange; - fCenter = roundf(255.0f * fCenter) / 255.0f; - - float fMinBase = fCenter - (a_fBaseRadius / 255.0f); - if (fMinBase < 0.0f) - { - fMinBase = 0.0f; - } - - float fMaxBase = fCenter + (a_fBaseRadius / 255.0f); - if (fMaxBase > 1.0f) - { - fMaxBase = 1.0f; - } - - for (float fBase = fMinBase; fBase <= fMaxBase; fBase += (0.999999f / 255.0f)) - { - float fRangeMultiplier = roundf(fRedRange / fTableEntryRange); - - float fMinMultiplier = fRangeMultiplier - a_fMultiplierRadius; - if (fMinMultiplier < 1.0f) - { - fMinMultiplier = 0.0f; - } - else if (fMinMultiplier > 15.0f) - { - fMinMultiplier = 15.0f; - } - - float fMaxMultiplier = fRangeMultiplier + a_fMultiplierRadius; - if (fMaxMultiplier < 1.0f) - { - fMaxMultiplier = 1.0f; - } - else if (fMaxMultiplier > 15.0f) - { - fMaxMultiplier = 15.0f; - } - - for (float fMultiplier = fMinMultiplier; fMultiplier <= fMaxMultiplier; fMultiplier += 1.0f) - { - // find best selector for each pixel - unsigned int auiBestSelectors[PIXELS]; - float afBestRedError[PIXELS]; - float afBestPixelRed[PIXELS]; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fBestPixelRedError = FLT_MAX; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - float fPixelRed = DecodePixelRed(fBase * 255.0f, fMultiplier, uiTableEntry, uiSelector); - - ColorFloatRGBA frgba(fPixelRed, m_pafrgbaSource[uiPixel].fG,0.0f,1.0f); - - float fPixelRedError = CalcPixelError(frgba, 1.0f, m_pafrgbaSource[uiPixel]); - - if (fPixelRedError < fBestPixelRedError) - { - fBestPixelRedError = fPixelRedError; - auiBestSelectors[uiPixel] = uiSelector; - afBestRedError[uiPixel] = fBestPixelRedError; - afBestPixelRed[uiPixel] = fPixelRed; - } - } - } - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestRedError[uiPixel]; - } - if (fBlockError < m_fRedBlockError) - { - m_fRedBlockError = fBlockError; - - if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::R11 || m_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - m_fRedBase = 255.0f * fBase; - } - else if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_R11 || m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_fRedBase = (fBase * 255) - 128; - } - else - { - assert(0); - } - m_fRedMultiplier = fMultiplier; - m_uiRedModifierTableIndex = uiTableEntry; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiRedSelectors[uiPixel] = auiBestSelectors[uiPixel]; - float fBestPixelRed = afBestPixelRed[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(fBestPixelRed, 0.0f, 0.0f, 1.0f); - m_afDecodedAlphas[uiPixel] = 1.0f; - } - } - } - } - - } - } - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_R11::SetEncodingBits(void) - { - if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::R11 || m_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - m_pencodingbitsR11->data.base = (unsigned char)roundf(m_fRedBase); - } - else if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_R11 || m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_pencodingbitsR11->data.base = (signed char)roundf(m_fRedBase); - } - else - { - assert(0); - } - m_pencodingbitsR11->data.table = m_uiRedModifierTableIndex; - m_pencodingbitsR11->data.multiplier = (unsigned char)roundf(m_fRedMultiplier); - - unsigned long long int ulliSelectorBits = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - ulliSelectorBits |= ((unsigned long long int)m_auiRedSelectors[uiPixel]) << uiShift; - } - - m_pencodingbitsR11->data.selectors0 = ulliSelectorBits >> 40; - m_pencodingbitsR11->data.selectors1 = ulliSelectorBits >> 32; - m_pencodingbitsR11->data.selectors2 = ulliSelectorBits >> 24; - m_pencodingbitsR11->data.selectors3 = ulliSelectorBits >> 16; - m_pencodingbitsR11->data.selectors4 = ulliSelectorBits >> 8; - m_pencodingbitsR11->data.selectors5 = ulliSelectorBits; - } - - // ---------------------------------------------------------------------------------------------------- - // -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.h deleted file mode 100644 index b40c1e0036..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_R11.h +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding_RGB8.h" - -namespace Etc -{ - class Block4x4EncodingBits_R11; - - // ################################################################################ - // Block4x4Encoding_R11 - // ################################################################################ - - class Block4x4Encoding_R11 : public Block4x4Encoding_RGB8 - { - public: - - Block4x4Encoding_R11(void); - virtual ~Block4x4Encoding_R11(void); - - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - inline float GetRedBase(void) const - { - return m_fRedBase; - } - - inline float GetRedMultiplier(void) const - { - return m_fRedMultiplier; - } - - inline int GetRedTableIndex(void) const - { - return m_uiRedModifierTableIndex; - } - - inline const unsigned int * GetRedSelectors(void) const - { - return m_auiRedSelectors; - } - - protected: - - static const unsigned int MODIFIER_TABLE_ENTRYS = 16; - static const unsigned int SELECTOR_BITS = 3; - static const unsigned int SELECTORS = 1 << SELECTOR_BITS; - - static float s_aafModifierTable[MODIFIER_TABLE_ENTRYS][SELECTORS]; - - void CalculateR11(unsigned int a_uiSelectorsUsed, - float a_fBaseRadius, float a_fMultiplierRadius); - - - - - inline float DecodePixelRed(float a_fBase, float a_fMultiplier, - unsigned int a_uiTableIndex, unsigned int a_uiSelector) - { - float fMultiplier = a_fMultiplier; - if (fMultiplier <= 0.0f) - { - fMultiplier = 1.0f / 8.0f; - } - - float fPixelRed = a_fBase * 8 + 4 + - 8 * fMultiplier*s_aafModifierTable[a_uiTableIndex][a_uiSelector]*255; - fPixelRed /= 2047.0f; - - if (fPixelRed < 0.0f) - { - fPixelRed = 0.0f; - } - else if (fPixelRed > 1.0f) - { - fPixelRed = 1.0f; - } - - return fPixelRed; - } - - Block4x4EncodingBits_R11 *m_pencodingbitsR11; - - float m_fRedBase; - float m_fRedMultiplier; - float m_fRedBlockError; - unsigned int m_uiRedModifierTableIndex; - unsigned int m_auiRedSelectors[PIXELS]; - - - }; - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.cpp deleted file mode 100644 index 417835db51..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.cpp +++ /dev/null @@ -1,447 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_RG11.cpp - -Block4x4Encoding_RG11 is the encoder to use when targetting file format RG11 and SRG11 (signed RG11). - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_RG11.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <float.h> -#include <limits> - -namespace Etc -{ - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_RG11::Block4x4Encoding_RG11(void) - { - m_pencodingbitsRG11 = nullptr; - } - - Block4x4Encoding_RG11::~Block4x4Encoding_RG11(void) {} - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits - // - void Block4x4Encoding_RG11::InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric) - { - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource,a_errormetric); - - m_pencodingbitsRG11 = (Block4x4EncodingBits_RG11 *)a_paucEncodingBits; - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_RG11::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - m_pencodingbitsRG11 = (Block4x4EncodingBits_RG11 *)a_paucEncodingBits; - - // init RGB portion - Block4x4Encoding_RGB8::InitFromEncodingBits(a_pblockParent, - (unsigned char *)m_pencodingbitsRG11, - a_pafrgbaSource, - a_errormetric); - m_fError = 0.0f; - - { - m_mode = MODE_RG11; - if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_fRedBase = (float)(signed char)m_pencodingbitsRG11->data.baseR; - m_fGrnBase = (float)(signed char)m_pencodingbitsRG11->data.baseG; - } - else - { - m_fRedBase = (float)(unsigned char)m_pencodingbitsRG11->data.baseR; - m_fGrnBase = (float)(unsigned char)m_pencodingbitsRG11->data.baseG; - } - m_fRedMultiplier = (float)m_pencodingbitsRG11->data.multiplierR; - m_fGrnMultiplier = (float)m_pencodingbitsRG11->data.multiplierG; - m_uiRedModifierTableIndex = m_pencodingbitsRG11->data.tableIndexR; - m_uiGrnModifierTableIndex = m_pencodingbitsRG11->data.tableIndexG; - - unsigned long long int ulliSelectorBitsR = 0; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR0 << 40; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR1 << 32; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR2 << 24; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR3 << 16; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR4 << 8; - ulliSelectorBitsR |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsR5; - - unsigned long long int ulliSelectorBitsG = 0; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG0 << 40; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG1 << 32; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG2 << 24; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG3 << 16; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG4 << 8; - ulliSelectorBitsG |= (unsigned long long int)m_pencodingbitsRG11->data.selectorsG5; - - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - m_auiRedSelectors[uiPixel] = (ulliSelectorBitsR >> uiShift) & (SELECTORS - 1); - m_auiGrnSelectors[uiPixel] = (ulliSelectorBitsG >> uiShift) & (SELECTORS - 1); - } - - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fRedDecodedData = 0.0f; - float fGrnDecodedData = 0.0f; - if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - fRedDecodedData = DecodePixelRed(m_fRedBase, m_fRedMultiplier, m_uiRedModifierTableIndex, m_auiRedSelectors[uiPixel]); - fGrnDecodedData = DecodePixelRed(m_fGrnBase, m_fGrnMultiplier, m_uiGrnModifierTableIndex, m_auiGrnSelectors[uiPixel]); - } - else if (a_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - fRedDecodedData = DecodePixelRed(m_fRedBase + 128, m_fRedMultiplier, m_uiRedModifierTableIndex, m_auiRedSelectors[uiPixel]); - fGrnDecodedData = DecodePixelRed(m_fGrnBase + 128, m_fGrnMultiplier, m_uiGrnModifierTableIndex, m_auiGrnSelectors[uiPixel]); - } - else - { - assert(0); - } - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(fRedDecodedData, fGrnDecodedData, 0.0f, 1.0f); - } - - } - - CalcBlockError(); - } - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RG11::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - - switch (m_uiEncodingIterations) - { - case 0: - m_fError = FLT_MAX; - m_fGrnBlockError = FLT_MAX; // artificially high value - m_fRedBlockError = FLT_MAX; - CalculateR11(8, 0.0f, 0.0f); - CalculateG11(8, 0.0f, 0.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - break; - - case 1: - CalculateR11(8, 2.0f, 1.0f); - CalculateG11(8, 2.0f, 1.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - if (a_fEffort <= 24.5f) - { - m_boolDone = true; - } - break; - - case 2: - CalculateR11(8, 12.0f, 1.0f); - CalculateG11(8, 12.0f, 1.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 3: - CalculateR11(7, 6.0f, 1.0f); - CalculateG11(7, 6.0f, 1.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - break; - - case 4: - CalculateR11(6, 3.0f, 1.0f); - CalculateG11(6, 3.0f, 1.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - break; - - case 5: - CalculateR11(5, 1.0f, 0.0f); - CalculateG11(5, 1.0f, 0.0f); - m_fError = (m_fGrnBlockError + m_fRedBlockError); - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - SetDoneIfPerfect(); - } - - // ---------------------------------------------------------------------------------------------------- - // find the best combination of base color, multiplier and selectors - // - // a_uiSelectorsUsed limits the number of selector combinations to try - // a_fBaseRadius limits the range of base colors to try - // a_fMultiplierRadius limits the range of multipliers to try - // - void Block4x4Encoding_RG11::CalculateG11(unsigned int a_uiSelectorsUsed, - float a_fBaseRadius, float a_fMultiplierRadius) - { - // maps from virtual (monotonic) selector to etc selector - static const unsigned int auiVirtualSelectorMap[8] = { 3, 2, 1, 0, 4, 5, 6, 7 }; - - // find min/max Grn - float fMinGrn = 1.0f; - float fMaxGrn = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - // ignore border pixels - float fAlpha = m_pafrgbaSource[uiPixel].fA; - if (isnan(fAlpha)) - { - continue; - } - - float fGrn = m_pafrgbaSource[uiPixel].fG; - - if (fGrn < fMinGrn) - { - fMinGrn = fGrn; - } - if (fGrn > fMaxGrn) - { - fMaxGrn = fGrn; - } - } - assert(fMinGrn <= fMaxGrn); - - float fGrnRange = (fMaxGrn - fMinGrn); - - // try each modifier table entry - for (unsigned int uiTableEntry = 0; uiTableEntry < MODIFIER_TABLE_ENTRYS; uiTableEntry++) - { - for (unsigned int uiMinVirtualSelector = 0; - uiMinVirtualSelector <= (8 - a_uiSelectorsUsed); - uiMinVirtualSelector++) - { - unsigned int uiMaxVirtualSelector = uiMinVirtualSelector + a_uiSelectorsUsed - 1; - - unsigned int uiMinSelector = auiVirtualSelectorMap[uiMinVirtualSelector]; - unsigned int uiMaxSelector = auiVirtualSelectorMap[uiMaxVirtualSelector]; - - float fTableEntryCenter = -s_aafModifierTable[uiTableEntry][uiMinSelector]; - - float fTableEntryRange = s_aafModifierTable[uiTableEntry][uiMaxSelector] - - s_aafModifierTable[uiTableEntry][uiMinSelector]; - - float fCenterRatio = fTableEntryCenter / fTableEntryRange; - - float fCenter = fMinGrn + fCenterRatio*fGrnRange; - fCenter = roundf(255.0f * fCenter) / 255.0f; - - float fMinBase = fCenter - (a_fBaseRadius / 255.0f); - if (fMinBase < 0.0f) - { - fMinBase = 0.0f; - } - - float fMaxBase = fCenter + (a_fBaseRadius / 255.0f); - if (fMaxBase > 1.0f) - { - fMaxBase = 1.0f; - } - - for (float fBase = fMinBase; fBase <= fMaxBase; fBase += (0.999999f / 255.0f)) - { - float fRangeMultiplier = roundf(fGrnRange / fTableEntryRange); - - float fMinMultiplier = fRangeMultiplier - a_fMultiplierRadius; - if (fMinMultiplier < 1.0f) - { - fMinMultiplier = 0.0f; - } - else if (fMinMultiplier > 15.0f) - { - fMinMultiplier = 15.0f; - } - - float fMaxMultiplier = fRangeMultiplier + a_fMultiplierRadius; - if (fMaxMultiplier < 1.0f) - { - fMaxMultiplier = 1.0f; - } - else if (fMaxMultiplier > 15.0f) - { - fMaxMultiplier = 15.0f; - } - - for (float fMultiplier = fMinMultiplier; fMultiplier <= fMaxMultiplier; fMultiplier += 1.0f) - { - // find best selector for each pixel - unsigned int auiBestSelectors[PIXELS]; - float afBestGrnError[PIXELS]; - float afBestPixelGrn[PIXELS]; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fBestPixelGrnError = FLT_MAX; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - //DecodePixelRed is not red channel specific - float fPixelGrn = DecodePixelRed(fBase * 255.0f, fMultiplier, uiTableEntry, uiSelector); - - ColorFloatRGBA frgba(m_pafrgbaSource[uiPixel].fR, fPixelGrn, 0.0f, 1.0f); - - float fPixelGrnError = CalcPixelError(frgba, 1.0f, m_pafrgbaSource[uiPixel]); - - if (fPixelGrnError < fBestPixelGrnError) - { - fBestPixelGrnError = fPixelGrnError; - auiBestSelectors[uiPixel] = uiSelector; - afBestGrnError[uiPixel] = fBestPixelGrnError; - afBestPixelGrn[uiPixel] = fPixelGrn; - } - } - } - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestGrnError[uiPixel]; - } - - if (fBlockError < m_fGrnBlockError) - { - m_fGrnBlockError = fBlockError; - - if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - m_fGrnBase = 255.0f * fBase; - } - else if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_fGrnBase = (fBase * 255) - 128; - } - else - { - assert(0); - } - m_fGrnMultiplier = fMultiplier; - m_uiGrnModifierTableIndex = uiTableEntry; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiGrnSelectors[uiPixel] = auiBestSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel].fG = afBestPixelGrn[uiPixel]; - m_afDecodedAlphas[uiPixel] = 1.0f; - } - } - } - } - - } - } - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RG11::SetEncodingBits(void) - { - unsigned long long int ulliSelectorBitsR = 0; - unsigned long long int ulliSelectorBitsG = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - ulliSelectorBitsR |= ((unsigned long long int)m_auiRedSelectors[uiPixel]) << uiShift; - ulliSelectorBitsG |= ((unsigned long long int)m_auiGrnSelectors[uiPixel]) << uiShift; - } - if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - m_pencodingbitsRG11->data.baseR = (unsigned char)roundf(m_fRedBase); - } - else if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_pencodingbitsRG11->data.baseR = (signed char)roundf(m_fRedBase); - } - else - { - assert(0); - } - m_pencodingbitsRG11->data.tableIndexR = m_uiRedModifierTableIndex; - m_pencodingbitsRG11->data.multiplierR = (unsigned char)roundf(m_fRedMultiplier); - - m_pencodingbitsRG11->data.selectorsR0 = ulliSelectorBitsR >> 40; - m_pencodingbitsRG11->data.selectorsR1 = ulliSelectorBitsR >> 32; - m_pencodingbitsRG11->data.selectorsR2 = ulliSelectorBitsR >> 24; - m_pencodingbitsRG11->data.selectorsR3 = ulliSelectorBitsR >> 16; - m_pencodingbitsRG11->data.selectorsR4 = ulliSelectorBitsR >> 8; - m_pencodingbitsRG11->data.selectorsR5 = ulliSelectorBitsR; - - if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::RG11) - { - m_pencodingbitsRG11->data.baseG = (unsigned char)roundf(m_fGrnBase); - } - else if (m_pblockParent->GetImageSource()->GetFormat() == Image::Format::SIGNED_RG11) - { - m_pencodingbitsRG11->data.baseG = (signed char)roundf(m_fGrnBase); - } - else - { - assert(0); - } - m_pencodingbitsRG11->data.tableIndexG = m_uiGrnModifierTableIndex; - m_pencodingbitsRG11->data.multiplierG = (unsigned char)roundf(m_fGrnMultiplier); - - m_pencodingbitsRG11->data.selectorsG0 = ulliSelectorBitsG >> 40; - m_pencodingbitsRG11->data.selectorsG1 = ulliSelectorBitsG >> 32; - m_pencodingbitsRG11->data.selectorsG2 = ulliSelectorBitsG >> 24; - m_pencodingbitsRG11->data.selectorsG3 = ulliSelectorBitsG >> 16; - m_pencodingbitsRG11->data.selectorsG4 = ulliSelectorBitsG >> 8; - m_pencodingbitsRG11->data.selectorsG5 = ulliSelectorBitsG; - - } - - // ---------------------------------------------------------------------------------------------------- - // -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.h deleted file mode 100644 index d4993b8c5f..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RG11.h +++ /dev/null @@ -1,86 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding_RGB8.h" -#include "EtcBlock4x4Encoding_R11.h" - -namespace Etc -{ - class Block4x4EncodingBits_RG11; - - // ################################################################################ - // Block4x4Encoding_RG11 - // ################################################################################ - - class Block4x4Encoding_RG11 : public Block4x4Encoding_R11 - { - float m_fGrnBase; - float m_fGrnMultiplier; - float m_fGrnBlockError; - unsigned int m_auiGrnSelectors[PIXELS]; - unsigned int m_uiGrnModifierTableIndex; - public: - - Block4x4Encoding_RG11(void); - virtual ~Block4x4Encoding_RG11(void); - - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - Block4x4EncodingBits_RG11 *m_pencodingbitsRG11; - - void CalculateG11(unsigned int a_uiSelectorsUsed, float a_fBaseRadius, float a_fMultiplierRadius); - - inline float GetGrnBase(void) const - { - return m_fGrnBase; - } - - inline float GetGrnMultiplier(void) const - { - return m_fGrnMultiplier; - } - - inline int GetGrnTableIndex(void) const - { - return m_uiGrnModifierTableIndex; - } - - inline const unsigned int * GetGrnSelectors(void) const - { - return m_auiGrnSelectors; - } - - }; - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp deleted file mode 100644 index 5c7ebed788..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp +++ /dev/null @@ -1,1730 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_RGB8.cpp - -Block4x4Encoding_RGB8 is the encoder to use for the ETC2 extensions when targetting file format RGB8. -This encoder is also used for the ETC2 subset of file format RGBA8. - -Block4x4Encoding_ETC1 encodes the ETC1 subset of RGB8. - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_RGB8.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4.h" -#include "EtcMath.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <float.h> -#include <limits> - -namespace Etc -{ - float Block4x4Encoding_RGB8::s_afTHDistanceTable[TH_DISTANCES] = - { - 3.0f / 255.0f, - 6.0f / 255.0f, - 11.0f / 255.0f, - 16.0f / 255.0f, - 23.0f / 255.0f, - 32.0f / 255.0f, - 41.0f / 255.0f, - 64.0f / 255.0f - }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_RGB8::Block4x4Encoding_RGB8(void) - { - - m_pencodingbitsRGB8 = nullptr; - - } - - Block4x4Encoding_RGB8::~Block4x4Encoding_RGB8(void) {} - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_RGB8::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - // handle ETC1 modes - Block4x4Encoding_ETC1::InitFromEncodingBits(a_pblockParent, - a_paucEncodingBits, a_pafrgbaSource,a_errormetric); - - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)a_paucEncodingBits; - - // detect if there is a T, H or Planar mode present - if (m_pencodingbitsRGB8->differential.diff) - { - int iRed1 = (int)m_pencodingbitsRGB8->differential.red1; - int iDRed2 = m_pencodingbitsRGB8->differential.dred2; - int iRed2 = iRed1 + iDRed2; - - int iGreen1 = (int)m_pencodingbitsRGB8->differential.green1; - int iDGreen2 = m_pencodingbitsRGB8->differential.dgreen2; - int iGreen2 = iGreen1 + iDGreen2; - - int iBlue1 = (int)m_pencodingbitsRGB8->differential.blue1; - int iDBlue2 = m_pencodingbitsRGB8->differential.dblue2; - int iBlue2 = iBlue1 + iDBlue2; - - if (iRed2 < 0 || iRed2 > 31) - { - InitFromEncodingBits_T(); - } - else if (iGreen2 < 0 || iGreen2 > 31) - { - InitFromEncodingBits_H(); - } - else if (iBlue2 < 0 || iBlue2 > 31) - { - InitFromEncodingBits_Planar(); - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding if T mode is detected - // - void Block4x4Encoding_RGB8::InitFromEncodingBits_T(void) - { - - m_mode = MODE_T; - - unsigned char ucRed1 = (unsigned char)((m_pencodingbitsRGB8->t.red1a << 2) + - m_pencodingbitsRGB8->t.red1b); - unsigned char ucGreen1 = m_pencodingbitsRGB8->t.green1; - unsigned char ucBlue1 = m_pencodingbitsRGB8->t.blue1; - - unsigned char ucRed2 = m_pencodingbitsRGB8->t.red2; - unsigned char ucGreen2 = m_pencodingbitsRGB8->t.green2; - unsigned char ucBlue2 = m_pencodingbitsRGB8->t.blue2; - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4(ucRed1, ucGreen1, ucBlue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4(ucRed2, ucGreen2, ucBlue2); - - m_uiCW1 = (m_pencodingbitsRGB8->t.da << 1) + m_pencodingbitsRGB8->t.db; - - Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(); - - DecodePixels_T(); - - CalcBlockError(); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding if H mode is detected - // - void Block4x4Encoding_RGB8::InitFromEncodingBits_H(void) - { - - m_mode = MODE_H; - - unsigned char ucRed1 = m_pencodingbitsRGB8->h.red1; - unsigned char ucGreen1 = (unsigned char)((m_pencodingbitsRGB8->h.green1a << 1) + - m_pencodingbitsRGB8->h.green1b); - unsigned char ucBlue1 = (unsigned char)((m_pencodingbitsRGB8->h.blue1a << 3) + - (m_pencodingbitsRGB8->h.blue1b << 1) + - m_pencodingbitsRGB8->h.blue1c); - - unsigned char ucRed2 = m_pencodingbitsRGB8->h.red2; - unsigned char ucGreen2 = (unsigned char)((m_pencodingbitsRGB8->h.green2a << 1) + - m_pencodingbitsRGB8->h.green2b); - unsigned char ucBlue2 = m_pencodingbitsRGB8->h.blue2; - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4(ucRed1, ucGreen1, ucBlue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4(ucRed2, ucGreen2, ucBlue2); - - // used to determine the LSB of the CW - unsigned int uiRGB1 = (unsigned int)(((int)ucRed1 << 16) + ((int)ucGreen1 << 8) + (int)ucBlue1); - unsigned int uiRGB2 = (unsigned int)(((int)ucRed2 << 16) + ((int)ucGreen2 << 8) + (int)ucBlue2); - - m_uiCW1 = (m_pencodingbitsRGB8->h.da << 2) + (m_pencodingbitsRGB8->h.db << 1); - if (uiRGB1 >= uiRGB2) - { - m_uiCW1++; - } - - Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(); - - DecodePixels_H(); - - CalcBlockError(); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding if Planar mode is detected - // - void Block4x4Encoding_RGB8::InitFromEncodingBits_Planar(void) - { - - m_mode = MODE_PLANAR; - - unsigned char ucOriginRed = m_pencodingbitsRGB8->planar.originRed; - unsigned char ucOriginGreen = (unsigned char)((m_pencodingbitsRGB8->planar.originGreen1 << 6) + - m_pencodingbitsRGB8->planar.originGreen2); - unsigned char ucOriginBlue = (unsigned char)((m_pencodingbitsRGB8->planar.originBlue1 << 5) + - (m_pencodingbitsRGB8->planar.originBlue2 << 3) + - (m_pencodingbitsRGB8->planar.originBlue3 << 1) + - m_pencodingbitsRGB8->planar.originBlue4); - - unsigned char ucHorizRed = (unsigned char)((m_pencodingbitsRGB8->planar.horizRed1 << 1) + - m_pencodingbitsRGB8->planar.horizRed2); - unsigned char ucHorizGreen = m_pencodingbitsRGB8->planar.horizGreen; - unsigned char ucHorizBlue = (unsigned char)((m_pencodingbitsRGB8->planar.horizBlue1 << 5) + - m_pencodingbitsRGB8->planar.horizBlue2); - - unsigned char ucVertRed = (unsigned char)((m_pencodingbitsRGB8->planar.vertRed1 << 3) + - m_pencodingbitsRGB8->planar.vertRed2); - unsigned char ucVertGreen = (unsigned char)((m_pencodingbitsRGB8->planar.vertGreen1 << 2) + - m_pencodingbitsRGB8->planar.vertGreen2); - unsigned char ucVertBlue = m_pencodingbitsRGB8->planar.vertBlue; - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromR6G7B6(ucOriginRed, ucOriginGreen, ucOriginBlue); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromR6G7B6(ucHorizRed, ucHorizGreen, ucHorizBlue); - m_frgbaColor3 = ColorFloatRGBA::ConvertFromR6G7B6(ucVertRed, ucVertGreen, ucVertBlue); - - DecodePixels_Planar(); - - CalcBlockError(); - - } - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RGB8::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - - switch (m_uiEncodingIterations) - { - case 0: - Block4x4Encoding_ETC1::PerformFirstIteration(); - if (m_boolDone) - { - break; - } - TryPlanar(0); - SetDoneIfPerfect(); - if (m_boolDone) - { - break; - } - TryTAndH(0); - break; - - case 1: - Block4x4Encoding_ETC1::TryDifferential(m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 2: - Block4x4Encoding_ETC1::TryIndividual(m_boolMostLikelyFlip, 1); - break; - - case 3: - Block4x4Encoding_ETC1::TryDifferential(!m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 4: - Block4x4Encoding_ETC1::TryIndividual(!m_boolMostLikelyFlip, 1); - break; - - case 5: - TryPlanar(1); - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 6: - TryTAndH(1); - if (a_fEffort <= 59.5f) - { - m_boolDone = true; - } - break; - - case 7: - Block4x4Encoding_ETC1::TryDegenerates1(); - if (a_fEffort <= 69.5f) - { - m_boolDone = true; - } - break; - - case 8: - Block4x4Encoding_ETC1::TryDegenerates2(); - if (a_fEffort <= 79.5f) - { - m_boolDone = true; - } - break; - - case 9: - Block4x4Encoding_ETC1::TryDegenerates3(); - if (a_fEffort <= 89.5f) - { - m_boolDone = true; - } - break; - - case 10: - Block4x4Encoding_ETC1::TryDegenerates4(); - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - - SetDoneIfPerfect(); - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in Planar mode - // save this encoding if it improves the error - // - void Block4x4Encoding_RGB8::TryPlanar(unsigned int a_uiRadius) - { - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_PLANAR; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - } - - encodingTry.CalculatePlanarCornerColors(); - - encodingTry.DecodePixels_Planar(); - - encodingTry.CalcBlockError(); - - if (a_uiRadius > 0) - { - encodingTry.TwiddlePlanar(); - } - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_PLANAR; - m_boolDiff = true; - m_boolFlip = false; - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_frgbaColor3 = encodingTry.m_frgbaColor3; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in T mode or H mode - // save this encoding if it improves the error - // - void Block4x4Encoding_RGB8::TryTAndH(unsigned int a_uiRadius) - { - - CalculateBaseColorsForTAndH(); - - TryT(a_uiRadius); - - TryH(a_uiRadius); - - } - - // ---------------------------------------------------------------------------------------------------- - // calculate original values for base colors - // store them in m_frgbaOriginalColor1 and m_frgbaOriginalColor2 - // - void Block4x4Encoding_RGB8::CalculateBaseColorsForTAndH(void) - { - - bool boolRGBX = m_pblockParent->GetImageSource()->GetErrorMetric() == ErrorMetric::RGBX; - - ColorFloatRGBA frgbaBlockAverage = (m_frgbaSourceAverageLeft + m_frgbaSourceAverageRight) * 0.5f; - - // find pixel farthest from average gray line - unsigned int uiFarthestPixel = 0; - float fFarthestGrayDistance2 = 0.0f; - unsigned int uiTransparentPixels = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - // don't count transparent - if (m_pafrgbaSource[uiPixel].fA == 0.0f && !boolRGBX) - { - uiTransparentPixels++; - } - else - { - float fGrayDistance2 = CalcGrayDistance2(m_pafrgbaSource[uiPixel], frgbaBlockAverage); - - if (fGrayDistance2 > fFarthestGrayDistance2) - { - uiFarthestPixel = uiPixel; - fFarthestGrayDistance2 = fGrayDistance2; - } - } - } - // a transparent block should not reach this method - assert(uiTransparentPixels < PIXELS); - - // set the original base colors to: - // half way to the farthest pixel and - // the mirror color on the other side of the average - ColorFloatRGBA frgbaOffset = (m_pafrgbaSource[uiFarthestPixel] - frgbaBlockAverage) * 0.5f; - m_frgbaOriginalColor1_TAndH = (frgbaBlockAverage + frgbaOffset).QuantizeR4G4B4(); - m_frgbaOriginalColor2_TAndH = (frgbaBlockAverage - frgbaOffset).ClampRGB().QuantizeR4G4B4(); // the "other side" might be out of range - - // move base colors to find best fit - for (unsigned int uiIteration = 0; uiIteration < 10; uiIteration++) - { - // find the center of pixels closest to each color - float fPixelsCloserToColor1 = 0.0f; - ColorFloatRGBA frgbSumPixelsCloserToColor1; - float fPixelsCloserToColor2 = 0.0f; - ColorFloatRGBA frgbSumPixelsCloserToColor2; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - // don't count transparent pixels - if (m_pafrgbaSource[uiPixel].fA == 0.0f) - { - continue; - } - - float fGrayDistance2ToColor1 = CalcGrayDistance2(m_pafrgbaSource[uiPixel], m_frgbaOriginalColor1_TAndH); - float fGrayDistance2ToColor2 = CalcGrayDistance2(m_pafrgbaSource[uiPixel], m_frgbaOriginalColor2_TAndH); - - ColorFloatRGBA frgbaAlphaWeightedSource = m_pafrgbaSource[uiPixel] * m_pafrgbaSource[uiPixel].fA; - - if (fGrayDistance2ToColor1 <= fGrayDistance2ToColor2) - { - fPixelsCloserToColor1 += m_pafrgbaSource[uiPixel].fA; - frgbSumPixelsCloserToColor1 = frgbSumPixelsCloserToColor1 + frgbaAlphaWeightedSource; - } - else - { - fPixelsCloserToColor2 += m_pafrgbaSource[uiPixel].fA; - frgbSumPixelsCloserToColor2 = frgbSumPixelsCloserToColor2 + frgbaAlphaWeightedSource; - } - } - if (fPixelsCloserToColor1 == 0.0f || fPixelsCloserToColor2 == 0.0f) - { - break; - } - - ColorFloatRGBA frgbAvgColor1Pixels = (frgbSumPixelsCloserToColor1 * (1.0f / fPixelsCloserToColor1)).QuantizeR4G4B4(); - ColorFloatRGBA frgbAvgColor2Pixels = (frgbSumPixelsCloserToColor2 * (1.0f / fPixelsCloserToColor2)).QuantizeR4G4B4(); - - if (frgbAvgColor1Pixels.fR == m_frgbaOriginalColor1_TAndH.fR && - frgbAvgColor1Pixels.fG == m_frgbaOriginalColor1_TAndH.fG && - frgbAvgColor1Pixels.fB == m_frgbaOriginalColor1_TAndH.fB && - frgbAvgColor2Pixels.fR == m_frgbaOriginalColor2_TAndH.fR && - frgbAvgColor2Pixels.fG == m_frgbaOriginalColor2_TAndH.fG && - frgbAvgColor2Pixels.fB == m_frgbaOriginalColor2_TAndH.fB) - { - break; - } - - m_frgbaOriginalColor1_TAndH = frgbAvgColor1Pixels; - m_frgbaOriginalColor2_TAndH = frgbAvgColor2Pixels; - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in T mode - // save this encoding if it improves the error - // - // since pixels that use base color1 don't use the distance table, color1 and color2 can be twiddled independently - // better encoding can be found if TWIDDLE_RADIUS is set to 2, but it will be much slower - // - void Block4x4Encoding_RGB8::TryT(unsigned int a_uiRadius) - { - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_T; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - encodingTry.m_fError = FLT_MAX; - } - - int iColor1Red = m_frgbaOriginalColor1_TAndH.IntRed(15.0f); - int iColor1Green = m_frgbaOriginalColor1_TAndH.IntGreen(15.0f); - int iColor1Blue = m_frgbaOriginalColor1_TAndH.IntBlue(15.0f); - - int iMinRed1 = iColor1Red - (int)a_uiRadius; - if (iMinRed1 < 0) - { - iMinRed1 = 0; - } - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { - iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; - if (iMinGreen1 < 0) - { - iMinGreen1 = 0; - } - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { - iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; - if (iMinBlue1 < 0) - { - iMinBlue1 = 0; - } - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { - iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); - int iColor2Green = m_frgbaOriginalColor2_TAndH.IntGreen(15.0f); - int iColor2Blue = m_frgbaOriginalColor2_TAndH.IntBlue(15.0f); - - int iMinRed2 = iColor2Red - (int)a_uiRadius; - if (iMinRed2 < 0) - { - iMinRed2 = 0; - } - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { - iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; - if (iMinGreen2 < 0) - { - iMinGreen2 = 0; - } - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { - iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; - if (iMinBlue2 < 0) - { - iMinBlue2 = 0; - } - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { - iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) - { - encodingTry.m_uiCW1 = uiDistance; - - // twiddle m_frgbaOriginalColor2_TAndH - // twiddle color2 first, since it affects 3 selectors, while color1 only affects one selector - // - for (int iRed2 = iMinRed2; iRed2 <= iMaxRed2; iRed2++) - { - for (int iGreen2 = iMinGreen2; iGreen2 <= iMaxGreen2; iGreen2++) - { - for (int iBlue2 = iMinBlue2; iBlue2 <= iMaxBlue2; iBlue2++) - { - for (unsigned int uiBaseColorSwaps = 0; uiBaseColorSwaps < 2; uiBaseColorSwaps++) - { - if (uiBaseColorSwaps == 0) - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor1_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - } - else - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor1_TAndH; - } - - encodingTry.TryT_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - } - - // twiddle m_frgbaOriginalColor1_TAndH - for (int iRed1 = iMinRed1; iRed1 <= iMaxRed1; iRed1++) - { - for (int iGreen1 = iMinGreen1; iGreen1 <= iMaxGreen1; iGreen1++) - { - for (int iBlue1 = iMinBlue1; iBlue1 <= iMaxBlue1; iBlue1++) - { - for (unsigned int uiBaseColorSwaps = 0; uiBaseColorSwaps < 2; uiBaseColorSwaps++) - { - if (uiBaseColorSwaps == 0) - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor2_TAndH; - } - else - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor2_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - } - - encodingTry.TryT_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // find best selector combination for TryT - // called on an encodingTry - // - void Block4x4Encoding_RGB8::TryT_BestSelectorCombination(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - - unsigned int auiBestPixelSelectors[PIXELS]; - float afBestPixelErrors[PIXELS] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - ColorFloatRGBA afrgbaBestDecodedPixels[PIXELS]; - ColorFloatRGBA afrgbaDecodedPixel[SELECTORS]; - - assert(SELECTORS == 4); - afrgbaDecodedPixel[0] = m_frgbaColor1; - afrgbaDecodedPixel[1] = (m_frgbaColor2 + fDistance).ClampRGB(); - afrgbaDecodedPixel[2] = m_frgbaColor2; - afrgbaDecodedPixel[3] = (m_frgbaColor2 - fDistance).ClampRGB(); - - // try each selector - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - - float fPixelError = CalcPixelError(afrgbaDecodedPixel[uiSelector], m_afDecodedAlphas[uiPixel], - m_pafrgbaSource[uiPixel]); - - if (fPixelError < afBestPixelErrors[uiPixel]) - { - afBestPixelErrors[uiPixel] = fPixelError; - auiBestPixelSelectors[uiPixel] = uiSelector; - afrgbaBestDecodedPixels[uiPixel] = afrgbaDecodedPixel[uiSelector]; - } - } - } - - - // add up all of the pixel errors - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestPixelErrors[uiPixel]; - } - - if (fBlockError < m_fError) - { - m_fError = fBlockError; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = auiBestPixelSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = afrgbaBestDecodedPixels[uiPixel]; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in T mode - // save this encoding if it improves the error - // - // since all pixels use the distance table, color1 and color2 can NOT be twiddled independently - // TWIDDLE_RADIUS of 2 is WAY too slow - // - void Block4x4Encoding_RGB8::TryH(unsigned int a_uiRadius) - { - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_H; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - encodingTry.m_fError = FLT_MAX; - } - - int iColor1Red = m_frgbaOriginalColor1_TAndH.IntRed(15.0f); - int iColor1Green = m_frgbaOriginalColor1_TAndH.IntGreen(15.0f); - int iColor1Blue = m_frgbaOriginalColor1_TAndH.IntBlue(15.0f); - - int iMinRed1 = iColor1Red - (int)a_uiRadius; - if (iMinRed1 < 0) - { - iMinRed1 = 0; - } - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { - iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; - if (iMinGreen1 < 0) - { - iMinGreen1 = 0; - } - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { - iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; - if (iMinBlue1 < 0) - { - iMinBlue1 = 0; - } - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { - iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); - int iColor2Green = m_frgbaOriginalColor2_TAndH.IntGreen(15.0f); - int iColor2Blue = m_frgbaOriginalColor2_TAndH.IntBlue(15.0f); - - int iMinRed2 = iColor2Red - (int)a_uiRadius; - if (iMinRed2 < 0) - { - iMinRed2 = 0; - } - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { - iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; - if (iMinGreen2 < 0) - { - iMinGreen2 = 0; - } - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { - iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; - if (iMinBlue2 < 0) - { - iMinBlue2 = 0; - } - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { - iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) - { - encodingTry.m_uiCW1 = uiDistance; - - // twiddle m_frgbaOriginalColor1_TAndH - for (int iRed1 = iMinRed1; iRed1 <= iMaxRed1; iRed1++) - { - for (int iGreen1 = iMinGreen1; iGreen1 <= iMaxGreen1; iGreen1++) - { - for (int iBlue1 = iMinBlue1; iBlue1 <= iMaxBlue1; iBlue1++) - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor2_TAndH; - - // if color1 == color2, H encoding issues can pop up, so abort - if (iRed1 == iColor2Red && iGreen1 == iColor2Green && iBlue1 == iColor2Blue) - { - continue; - } - - encodingTry.TryH_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - - // twiddle m_frgbaOriginalColor2_TAndH - for (int iRed2 = iMinRed2; iRed2 <= iMaxRed2; iRed2++) - { - for (int iGreen2 = iMinGreen2; iGreen2 <= iMaxGreen2; iGreen2++) - { - for (int iBlue2 = iMinBlue2; iBlue2 <= iMaxBlue2; iBlue2++) - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor1_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - - // if color1 == color2, H encoding issues can pop up, so abort - if (iRed2 == iColor1Red && iGreen2 == iColor1Green && iBlue2 == iColor1Blue) - { - continue; - } - - encodingTry.TryH_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // find best selector combination for TryH - // called on an encodingTry - // - void Block4x4Encoding_RGB8::TryH_BestSelectorCombination(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - - unsigned int auiBestPixelSelectors[PIXELS]; - float afBestPixelErrors[PIXELS] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - ColorFloatRGBA afrgbaBestDecodedPixels[PIXELS]; - ColorFloatRGBA afrgbaDecodedPixel[SELECTORS]; - - assert(SELECTORS == 4); - afrgbaDecodedPixel[0] = (m_frgbaColor1 + fDistance).ClampRGB(); - afrgbaDecodedPixel[1] = (m_frgbaColor1 - fDistance).ClampRGB(); - afrgbaDecodedPixel[2] = (m_frgbaColor2 + fDistance).ClampRGB(); - afrgbaDecodedPixel[3] = (m_frgbaColor2 - fDistance).ClampRGB(); - - // try each selector - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - - float fPixelError = CalcPixelError(afrgbaDecodedPixel[uiSelector], m_afDecodedAlphas[uiPixel], - m_pafrgbaSource[uiPixel]); - - if (fPixelError < afBestPixelErrors[uiPixel]) - { - afBestPixelErrors[uiPixel] = fPixelError; - auiBestPixelSelectors[uiPixel] = uiSelector; - afrgbaBestDecodedPixels[uiPixel] = afrgbaDecodedPixel[uiSelector]; - } - } - } - - - // add up all of the pixel errors - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestPixelErrors[uiPixel]; - } - - if (fBlockError < m_fError) - { - m_fError = fBlockError; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = auiBestPixelSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = afrgbaBestDecodedPixels[uiPixel]; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // use linear regression to find the best fit for colors along the edges of the 4x4 block - // - void Block4x4Encoding_RGB8::CalculatePlanarCornerColors(void) - { - ColorFloatRGBA afrgbaRegression[MAX_PLANAR_REGRESSION_SIZE]; - ColorFloatRGBA frgbaSlope; - ColorFloatRGBA frgbaOffset; - - // top edge - afrgbaRegression[0] = m_pafrgbaSource[0]; - afrgbaRegression[1] = m_pafrgbaSource[4]; - afrgbaRegression[2] = m_pafrgbaSource[8]; - afrgbaRegression[3] = m_pafrgbaSource[12]; - ColorRegression(afrgbaRegression, 4, &frgbaSlope, &frgbaOffset); - m_frgbaColor1 = frgbaOffset; - m_frgbaColor2 = (frgbaSlope * 4.0f) + frgbaOffset; - - // left edge - afrgbaRegression[0] = m_pafrgbaSource[0]; - afrgbaRegression[1] = m_pafrgbaSource[1]; - afrgbaRegression[2] = m_pafrgbaSource[2]; - afrgbaRegression[3] = m_pafrgbaSource[3]; - ColorRegression(afrgbaRegression, 4, &frgbaSlope, &frgbaOffset); - m_frgbaColor1 = (m_frgbaColor1 + frgbaOffset) * 0.5f; // average with top edge - m_frgbaColor3 = (frgbaSlope * 4.0f) + frgbaOffset; - - // right edge - afrgbaRegression[0] = m_pafrgbaSource[12]; - afrgbaRegression[1] = m_pafrgbaSource[13]; - afrgbaRegression[2] = m_pafrgbaSource[14]; - afrgbaRegression[3] = m_pafrgbaSource[15]; - ColorRegression(afrgbaRegression, 4, &frgbaSlope, &frgbaOffset); - m_frgbaColor2 = (m_frgbaColor2 + frgbaOffset) * 0.5f; // average with top edge - - // bottom edge - afrgbaRegression[0] = m_pafrgbaSource[3]; - afrgbaRegression[1] = m_pafrgbaSource[7]; - afrgbaRegression[2] = m_pafrgbaSource[11]; - afrgbaRegression[3] = m_pafrgbaSource[15]; - ColorRegression(afrgbaRegression, 4, &frgbaSlope, &frgbaOffset); - m_frgbaColor3 = (m_frgbaColor3 + frgbaOffset) * 0.5f; // average with left edge - - // quantize corner colors to 6/7/6 - m_frgbaColor1 = m_frgbaColor1.QuantizeR6G7B6(); - m_frgbaColor2 = m_frgbaColor2.QuantizeR6G7B6(); - m_frgbaColor3 = m_frgbaColor3.QuantizeR6G7B6(); - - } - - // ---------------------------------------------------------------------------------------------------- - // try different corner colors by slightly changing R, G and B independently - // - // R, G and B decoding and errors are independent, so R, G and B twiddles can be independent - // - // return true if improvement - // - bool Block4x4Encoding_RGB8::TwiddlePlanar(void) - { - bool boolImprovement = false; - - while (TwiddlePlanarR()) - { - boolImprovement = true; - } - - while (TwiddlePlanarG()) - { - boolImprovement = true; - } - - while (TwiddlePlanarB()) - { - boolImprovement = true; - } - - return boolImprovement; - } - - // ---------------------------------------------------------------------------------------------------- - // try different corner colors by slightly changing R - // - bool Block4x4Encoding_RGB8::TwiddlePlanarR() - { - bool boolImprovement = false; - - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_PLANAR; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - } - - int iOriginRed = encodingTry.m_frgbaColor1.IntRed(63.0f); - int iHorizRed = encodingTry.m_frgbaColor2.IntRed(63.0f); - int iVertRed = encodingTry.m_frgbaColor3.IntRed(63.0f); - - for (int iTryOriginRed = iOriginRed - 1; iTryOriginRed <= iOriginRed + 1; iTryOriginRed++) - { - // check for out of range - if (iTryOriginRed < 0 || iTryOriginRed > 63) - { - continue; - } - - encodingTry.m_frgbaColor1.fR = ((iTryOriginRed << 2) + (iTryOriginRed >> 4)) / 255.0f; - - for (int iTryHorizRed = iHorizRed - 1; iTryHorizRed <= iHorizRed + 1; iTryHorizRed++) - { - // check for out of range - if (iTryHorizRed < 0 || iTryHorizRed > 63) - { - continue; - } - - encodingTry.m_frgbaColor2.fR = ((iTryHorizRed << 2) + (iTryHorizRed >> 4)) / 255.0f; - - for (int iTryVertRed = iVertRed - 1; iTryVertRed <= iVertRed + 1; iTryVertRed++) - { - // check for out of range - if (iTryVertRed < 0 || iTryVertRed > 63) - { - continue; - } - - // don't bother with null twiddle - if (iTryOriginRed == iOriginRed && iTryHorizRed == iHorizRed && iTryVertRed == iVertRed) - { - continue; - } - - encodingTry.m_frgbaColor3.fR = ((iTryVertRed << 2) + (iTryVertRed >> 4)) / 255.0f; - - encodingTry.DecodePixels_Planar(); - - encodingTry.CalcBlockError(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_PLANAR; - m_boolDiff = true; - m_boolFlip = false; - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_frgbaColor3 = encodingTry.m_frgbaColor3; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - - boolImprovement = true; - } - } - } - } - - return boolImprovement; - } - - // ---------------------------------------------------------------------------------------------------- - // try different corner colors by slightly changing G - // - bool Block4x4Encoding_RGB8::TwiddlePlanarG() - { - bool boolImprovement = false; - - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_PLANAR; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - } - - int iOriginGreen = encodingTry.m_frgbaColor1.IntGreen(127.0f); - int iHorizGreen = encodingTry.m_frgbaColor2.IntGreen(127.0f); - int iVertGreen = encodingTry.m_frgbaColor3.IntGreen(127.0f); - - for (int iTryOriginGreen = iOriginGreen - 1; iTryOriginGreen <= iOriginGreen + 1; iTryOriginGreen++) - { - // check for out of range - if (iTryOriginGreen < 0 || iTryOriginGreen > 127) - { - continue; - } - - encodingTry.m_frgbaColor1.fG = ((iTryOriginGreen << 1) + (iTryOriginGreen >> 6)) / 255.0f; - - for (int iTryHorizGreen = iHorizGreen - 1; iTryHorizGreen <= iHorizGreen + 1; iTryHorizGreen++) - { - // check for out of range - if (iTryHorizGreen < 0 || iTryHorizGreen > 127) - { - continue; - } - - encodingTry.m_frgbaColor2.fG = ((iTryHorizGreen << 1) + (iTryHorizGreen >> 6)) / 255.0f; - - for (int iTryVertGreen = iVertGreen - 1; iTryVertGreen <= iVertGreen + 1; iTryVertGreen++) - { - // check for out of range - if (iTryVertGreen < 0 || iTryVertGreen > 127) - { - continue; - } - - // don't bother with null twiddle - if (iTryOriginGreen == iOriginGreen && - iTryHorizGreen == iHorizGreen && - iTryVertGreen == iVertGreen) - { - continue; - } - - encodingTry.m_frgbaColor3.fG = ((iTryVertGreen << 1) + (iTryVertGreen >> 6)) / 255.0f; - - encodingTry.DecodePixels_Planar(); - - encodingTry.CalcBlockError(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_PLANAR; - m_boolDiff = true; - m_boolFlip = false; - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_frgbaColor3 = encodingTry.m_frgbaColor3; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - - boolImprovement = true; - } - } - } - } - - return boolImprovement; - } - - // ---------------------------------------------------------------------------------------------------- - // try different corner colors by slightly changing B - // - bool Block4x4Encoding_RGB8::TwiddlePlanarB() - { - bool boolImprovement = false; - - Block4x4Encoding_RGB8 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_PLANAR; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - } - - int iOriginBlue = encodingTry.m_frgbaColor1.IntBlue(63.0f); - int iHorizBlue = encodingTry.m_frgbaColor2.IntBlue(63.0f); - int iVertBlue = encodingTry.m_frgbaColor3.IntBlue(63.0f); - - for (int iTryOriginBlue = iOriginBlue - 1; iTryOriginBlue <= iOriginBlue + 1; iTryOriginBlue++) - { - // check for out of range - if (iTryOriginBlue < 0 || iTryOriginBlue > 63) - { - continue; - } - - encodingTry.m_frgbaColor1.fB = ((iTryOriginBlue << 2) + (iTryOriginBlue >> 4)) / 255.0f; - - for (int iTryHorizBlue = iHorizBlue - 1; iTryHorizBlue <= iHorizBlue + 1; iTryHorizBlue++) - { - // check for out of range - if (iTryHorizBlue < 0 || iTryHorizBlue > 63) - { - continue; - } - - encodingTry.m_frgbaColor2.fB = ((iTryHorizBlue << 2) + (iTryHorizBlue >> 4)) / 255.0f; - - for (int iTryVertBlue = iVertBlue - 1; iTryVertBlue <= iVertBlue + 1; iTryVertBlue++) - { - // check for out of range - if (iTryVertBlue < 0 || iTryVertBlue > 63) - { - continue; - } - - // don't bother with null twiddle - if (iTryOriginBlue == iOriginBlue && iTryHorizBlue == iHorizBlue && iTryVertBlue == iVertBlue) - { - continue; - } - - encodingTry.m_frgbaColor3.fB = ((iTryVertBlue << 2) + (iTryVertBlue >> 4)) / 255.0f; - - encodingTry.DecodePixels_Planar(); - - encodingTry.CalcBlockError(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_PLANAR; - m_boolDiff = true; - m_boolFlip = false; - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_frgbaColor3 = encodingTry.m_frgbaColor3; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - - boolImprovement = true; - } - } - } - } - - return boolImprovement; - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RGB8::SetEncodingBits(void) - { - - switch (m_mode) - { - case MODE_ETC1: - Block4x4Encoding_ETC1::SetEncodingBits(); - break; - - case MODE_T: - SetEncodingBits_T(); - break; - - case MODE_H: - SetEncodingBits_H(); - break; - - case MODE_PLANAR: - SetEncodingBits_Planar(); - break; - - default: - assert(false); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state for T mode - // - void Block4x4Encoding_RGB8::SetEncodingBits_T(void) - { - static const bool SANITY_CHECK = true; - - assert(m_mode == MODE_T); - assert(m_boolDiff == true); - - unsigned int uiRed1 = (unsigned int)m_frgbaColor1.IntRed(15.0f); - unsigned int uiGreen1 = (unsigned int)m_frgbaColor1.IntGreen(15.0f); - unsigned int uiBlue1 = (unsigned int)m_frgbaColor1.IntBlue(15.0f); - - unsigned int uiRed2 = (unsigned int)m_frgbaColor2.IntRed(15.0f); - unsigned int uiGreen2 = (unsigned int)m_frgbaColor2.IntGreen(15.0f); - unsigned int uiBlue2 = (unsigned int)m_frgbaColor2.IntBlue(15.0f); - - m_pencodingbitsRGB8->t.red1a = uiRed1 >> 2; - m_pencodingbitsRGB8->t.red1b = uiRed1; - m_pencodingbitsRGB8->t.green1 = uiGreen1; - m_pencodingbitsRGB8->t.blue1 = uiBlue1; - - m_pencodingbitsRGB8->t.red2 = uiRed2; - m_pencodingbitsRGB8->t.green2 = uiGreen2; - m_pencodingbitsRGB8->t.blue2 = uiBlue2; - - m_pencodingbitsRGB8->t.da = m_uiCW1 >> 1; - m_pencodingbitsRGB8->t.db = m_uiCW1; - - m_pencodingbitsRGB8->t.diff = 1; - - Block4x4Encoding_ETC1::SetEncodingBits_Selectors(); - - // create an invalid R differential to trigger T mode - m_pencodingbitsRGB8->t.detect1 = 0; - m_pencodingbitsRGB8->t.detect2 = 0; - int iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - if (iRed2 >= 4) - { - m_pencodingbitsRGB8->t.detect1 = 7; - m_pencodingbitsRGB8->t.detect2 = 0; - } - else - { - m_pencodingbitsRGB8->t.detect1 = 0; - m_pencodingbitsRGB8->t.detect2 = 1; - } - - if (SANITY_CHECK) - { - iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - - // make sure red overflows - assert(iRed2 < 0 || iRed2 > 31); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state for H mode - // - // colors and selectors may need to swap in order to generate lsb of distance index - // - void Block4x4Encoding_RGB8::SetEncodingBits_H(void) - { - static const bool SANITY_CHECK = true; - - assert(m_mode == MODE_H); - assert(m_boolDiff == true); - - unsigned int uiRed1 = (unsigned int)m_frgbaColor1.IntRed(15.0f); - unsigned int uiGreen1 = (unsigned int)m_frgbaColor1.IntGreen(15.0f); - unsigned int uiBlue1 = (unsigned int)m_frgbaColor1.IntBlue(15.0f); - - unsigned int uiRed2 = (unsigned int)m_frgbaColor2.IntRed(15.0f); - unsigned int uiGreen2 = (unsigned int)m_frgbaColor2.IntGreen(15.0f); - unsigned int uiBlue2 = (unsigned int)m_frgbaColor2.IntBlue(15.0f); - - unsigned int uiColor1 = (uiRed1 << 16) + (uiGreen1 << 8) + uiBlue1; - unsigned int uiColor2 = (uiRed2 << 16) + (uiGreen2 << 8) + uiBlue2; - - bool boolOddDistance = m_uiCW1 & 1; - bool boolSwapColors = (uiColor1 < uiColor2) ^ !boolOddDistance; - - if (boolSwapColors) - { - m_pencodingbitsRGB8->h.red1 = uiRed2; - m_pencodingbitsRGB8->h.green1a = uiGreen2 >> 1; - m_pencodingbitsRGB8->h.green1b = uiGreen2; - m_pencodingbitsRGB8->h.blue1a = uiBlue2 >> 3; - m_pencodingbitsRGB8->h.blue1b = uiBlue2 >> 1; - m_pencodingbitsRGB8->h.blue1c = uiBlue2; - - m_pencodingbitsRGB8->h.red2 = uiRed1; - m_pencodingbitsRGB8->h.green2a = uiGreen1 >> 1; - m_pencodingbitsRGB8->h.green2b = uiGreen1; - m_pencodingbitsRGB8->h.blue2 = uiBlue1; - - m_pencodingbitsRGB8->h.da = m_uiCW1 >> 2; - m_pencodingbitsRGB8->h.db = m_uiCW1 >> 1; - } - else - { - m_pencodingbitsRGB8->h.red1 = uiRed1; - m_pencodingbitsRGB8->h.green1a = uiGreen1 >> 1; - m_pencodingbitsRGB8->h.green1b = uiGreen1; - m_pencodingbitsRGB8->h.blue1a = uiBlue1 >> 3; - m_pencodingbitsRGB8->h.blue1b = uiBlue1 >> 1; - m_pencodingbitsRGB8->h.blue1c = uiBlue1; - - m_pencodingbitsRGB8->h.red2 = uiRed2; - m_pencodingbitsRGB8->h.green2a = uiGreen2 >> 1; - m_pencodingbitsRGB8->h.green2b = uiGreen2; - m_pencodingbitsRGB8->h.blue2 = uiBlue2; - - m_pencodingbitsRGB8->h.da = m_uiCW1 >> 2; - m_pencodingbitsRGB8->h.db = m_uiCW1 >> 1; - } - - m_pencodingbitsRGB8->h.diff = 1; - - Block4x4Encoding_ETC1::SetEncodingBits_Selectors(); - - if (boolSwapColors) - { - m_pencodingbitsRGB8->h.selectors ^= 0x0000FFFF; - } - - // create an invalid R differential to trigger T mode - m_pencodingbitsRGB8->h.detect1 = 0; - m_pencodingbitsRGB8->h.detect2 = 0; - m_pencodingbitsRGB8->h.detect3 = 0; - int iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - int iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - if (iRed2 < 0 || iRed2 > 31) - { - m_pencodingbitsRGB8->h.detect1 = 1; - } - if (iGreen2 >= 4) - { - m_pencodingbitsRGB8->h.detect2 = 7; - m_pencodingbitsRGB8->h.detect3 = 0; - } - else - { - m_pencodingbitsRGB8->h.detect2 = 0; - m_pencodingbitsRGB8->h.detect3 = 1; - } - - if (SANITY_CHECK) - { - iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - - // make sure red doesn't overflow and green does - assert(iRed2 >= 0 && iRed2 <= 31); - assert(iGreen2 < 0 || iGreen2 > 31); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state for Planar mode - // - void Block4x4Encoding_RGB8::SetEncodingBits_Planar(void) - { - static const bool SANITY_CHECK = true; - - assert(m_mode == MODE_PLANAR); - assert(m_boolDiff == true); - - unsigned int uiOriginRed = (unsigned int)m_frgbaColor1.IntRed(63.0f); - unsigned int uiOriginGreen = (unsigned int)m_frgbaColor1.IntGreen(127.0f); - unsigned int uiOriginBlue = (unsigned int)m_frgbaColor1.IntBlue(63.0f); - - unsigned int uiHorizRed = (unsigned int)m_frgbaColor2.IntRed(63.0f); - unsigned int uiHorizGreen = (unsigned int)m_frgbaColor2.IntGreen(127.0f); - unsigned int uiHorizBlue = (unsigned int)m_frgbaColor2.IntBlue(63.0f); - - unsigned int uiVertRed = (unsigned int)m_frgbaColor3.IntRed(63.0f); - unsigned int uiVertGreen = (unsigned int)m_frgbaColor3.IntGreen(127.0f); - unsigned int uiVertBlue = (unsigned int)m_frgbaColor3.IntBlue(63.0f); - - m_pencodingbitsRGB8->planar.originRed = uiOriginRed; - m_pencodingbitsRGB8->planar.originGreen1 = uiOriginGreen >> 6; - m_pencodingbitsRGB8->planar.originGreen2 = uiOriginGreen; - m_pencodingbitsRGB8->planar.originBlue1 = uiOriginBlue >> 5; - m_pencodingbitsRGB8->planar.originBlue2 = uiOriginBlue >> 3; - m_pencodingbitsRGB8->planar.originBlue3 = uiOriginBlue >> 1; - m_pencodingbitsRGB8->planar.originBlue4 = uiOriginBlue; - - m_pencodingbitsRGB8->planar.horizRed1 = uiHorizRed >> 1; - m_pencodingbitsRGB8->planar.horizRed2 = uiHorizRed; - m_pencodingbitsRGB8->planar.horizGreen = uiHorizGreen; - m_pencodingbitsRGB8->planar.horizBlue1 = uiHorizBlue >> 5; - m_pencodingbitsRGB8->planar.horizBlue2 = uiHorizBlue; - - m_pencodingbitsRGB8->planar.vertRed1 = uiVertRed >> 3; - m_pencodingbitsRGB8->planar.vertRed2 = uiVertRed; - m_pencodingbitsRGB8->planar.vertGreen1 = uiVertGreen >> 2; - m_pencodingbitsRGB8->planar.vertGreen2 = uiVertGreen; - m_pencodingbitsRGB8->planar.vertBlue = uiVertBlue; - - m_pencodingbitsRGB8->planar.diff = 1; - - // create valid RG differentials and an invalid B differential to trigger planar mode - m_pencodingbitsRGB8->planar.detect1 = 0; - m_pencodingbitsRGB8->planar.detect2 = 0; - m_pencodingbitsRGB8->planar.detect3 = 0; - m_pencodingbitsRGB8->planar.detect4 = 0; - int iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - int iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - int iBlue2 = (int)m_pencodingbitsRGB8->differential.blue1 + (int)m_pencodingbitsRGB8->differential.dblue2; - if (iRed2 < 0 || iRed2 > 31) - { - m_pencodingbitsRGB8->planar.detect1 = 1; - } - if (iGreen2 < 0 || iGreen2 > 31) - { - m_pencodingbitsRGB8->planar.detect2 = 1; - } - if (iBlue2 >= 4) - { - m_pencodingbitsRGB8->planar.detect3 = 7; - m_pencodingbitsRGB8->planar.detect4 = 0; - } - else - { - m_pencodingbitsRGB8->planar.detect3 = 0; - m_pencodingbitsRGB8->planar.detect4 = 1; - } - - if (SANITY_CHECK) - { - iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - iBlue2 = (int)m_pencodingbitsRGB8->differential.blue1 + (int)m_pencodingbitsRGB8->differential.dblue2; - - // make sure red and green don't overflow and blue does - assert(iRed2 >= 0 && iRed2 <= 31); - assert(iGreen2 >= 0 && iGreen2 <= 31); - assert(iBlue2 < 0 || iBlue2 > 31); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the decoded colors and decoded alpha based on the encoding state for T mode - // - void Block4x4Encoding_RGB8::DecodePixels_T(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - ColorFloatRGBA frgbaDistance(fDistance, fDistance, fDistance, 0.0f); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - switch (m_auiSelectors[uiPixel]) - { - case 0: - m_afrgbaDecodedColors[uiPixel] = m_frgbaColor1; - break; - - case 1: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 + frgbaDistance).ClampRGB(); - break; - - case 2: - m_afrgbaDecodedColors[uiPixel] = m_frgbaColor2; - break; - - case 3: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 - frgbaDistance).ClampRGB(); - break; - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the decoded colors and decoded alpha based on the encoding state for H mode - // - void Block4x4Encoding_RGB8::DecodePixels_H(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - ColorFloatRGBA frgbaDistance(fDistance, fDistance, fDistance, 0.0f); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - switch (m_auiSelectors[uiPixel]) - { - case 0: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor1 + frgbaDistance).ClampRGB(); - break; - - case 1: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor1 - frgbaDistance).ClampRGB(); - break; - - case 2: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 + frgbaDistance).ClampRGB(); - break; - - case 3: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 - frgbaDistance).ClampRGB(); - break; - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the decoded colors and decoded alpha based on the encoding state for Planar mode - // - void Block4x4Encoding_RGB8::DecodePixels_Planar(void) - { - - int iRO = (int)roundf(m_frgbaColor1.fR * 255.0f); - int iGO = (int)roundf(m_frgbaColor1.fG * 255.0f); - int iBO = (int)roundf(m_frgbaColor1.fB * 255.0f); - - int iRH = (int)roundf(m_frgbaColor2.fR * 255.0f); - int iGH = (int)roundf(m_frgbaColor2.fG * 255.0f); - int iBH = (int)roundf(m_frgbaColor2.fB * 255.0f); - - int iRV = (int)roundf(m_frgbaColor3.fR * 255.0f); - int iGV = (int)roundf(m_frgbaColor3.fG * 255.0f); - int iBV = (int)roundf(m_frgbaColor3.fB * 255.0f); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - int iX = (int)(uiPixel >> 2); - int iY = (int)(uiPixel & 3); - - int iR = (iX*(iRH - iRO) + iY*(iRV - iRO) + 4*iRO + 2) >> 2; - int iG = (iX*(iGH - iGO) + iY*(iGV - iGO) + 4*iGO + 2) >> 2; - int iB = (iX*(iBH - iBO) + iY*(iBV - iBO) + 4*iBO + 2) >> 2; - - ColorFloatRGBA frgba; - frgba.fR = (float)iR / 255.0f; - frgba.fG = (float)iG / 255.0f; - frgba.fB = (float)iB / 255.0f; - frgba.fA = 1.0f; - - m_afrgbaDecodedColors[uiPixel] = frgba.ClampRGB(); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // perform a linear regression for the a_uiPixels in a_pafrgbaPixels[] - // - // output the closest color line using a_pfrgbaSlope and a_pfrgbaOffset - // - void Block4x4Encoding_RGB8::ColorRegression(ColorFloatRGBA *a_pafrgbaPixels, unsigned int a_uiPixels, - ColorFloatRGBA *a_pfrgbaSlope, ColorFloatRGBA *a_pfrgbaOffset) - { - typedef struct - { - float f[4]; - } Float4; - - Float4 *paf4Pixels = (Float4 *)(a_pafrgbaPixels); - Float4 *pf4Slope = (Float4 *)(a_pfrgbaSlope); - Float4 *pf4Offset = (Float4 *)(a_pfrgbaOffset); - - float afX[MAX_PLANAR_REGRESSION_SIZE]; - float afY[MAX_PLANAR_REGRESSION_SIZE]; - - // handle r, g and b separately. don't bother with a - for (unsigned int uiComponent = 0; uiComponent < 3; uiComponent++) - { - for (unsigned int uiPixel = 0; uiPixel < a_uiPixels; uiPixel++) - { - afX[uiPixel] = (float)uiPixel; - afY[uiPixel] = paf4Pixels[uiPixel].f[uiComponent]; - - } - Etc::Regression(afX, afY, a_uiPixels, - &(pf4Slope->f[uiComponent]), &(pf4Offset->f[uiComponent])); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.h deleted file mode 100644 index 03754d5e3b..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.h +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding_ETC1.h" - -namespace Etc -{ - - class Block4x4Encoding_RGB8 : public Block4x4Encoding_ETC1 - { - public: - - Block4x4Encoding_RGB8(void); - virtual ~Block4x4Encoding_RGB8(void); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - inline ColorFloatRGBA GetColor3(void) const - { - return m_frgbaColor3; - } - - protected: - - static const unsigned int PLANAR_CORNER_COLORS = 3; - static const unsigned int MAX_PLANAR_REGRESSION_SIZE = 4; - static const unsigned int TH_DISTANCES = 8; - - static float s_afTHDistanceTable[TH_DISTANCES]; - - void TryPlanar(unsigned int a_uiRadius); - void TryTAndH(unsigned int a_uiRadius); - - void InitFromEncodingBits_Planar(void); - - ColorFloatRGBA m_frgbaColor3; // used for planar - - void SetEncodingBits_T(void); - void SetEncodingBits_H(void); - void SetEncodingBits_Planar(void); - - // state shared between iterations - ColorFloatRGBA m_frgbaOriginalColor1_TAndH; - ColorFloatRGBA m_frgbaOriginalColor2_TAndH; - - void CalculateBaseColorsForTAndH(void); - void TryT(unsigned int a_uiRadius); - void TryT_BestSelectorCombination(void); - void TryH(unsigned int a_uiRadius); - void TryH_BestSelectorCombination(void); - - private: - - void InitFromEncodingBits_T(void); - void InitFromEncodingBits_H(void); - - void CalculatePlanarCornerColors(void); - - void ColorRegression(ColorFloatRGBA *a_pafrgbaPixels, unsigned int a_uiPixels, - ColorFloatRGBA *a_pfrgbaSlope, ColorFloatRGBA *a_pfrgbaOffset); - - bool TwiddlePlanar(void); - bool TwiddlePlanarR(); - bool TwiddlePlanarG(); - bool TwiddlePlanarB(); - - void DecodePixels_T(void); - void DecodePixels_H(void); - void DecodePixels_Planar(void); - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp deleted file mode 100644 index b94b64e68c..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp +++ /dev/null @@ -1,1819 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_RGB8A1.cpp contains: - Block4x4Encoding_RGB8A1 - Block4x4Encoding_RGB8A1_Opaque - Block4x4Encoding_RGB8A1_Transparent - -These encoders are used when targetting file format RGB8A1. - -Block4x4Encoding_RGB8A1_Opaque is used when all pixels in the 4x4 block are opaque -Block4x4Encoding_RGB8A1_Transparent is used when all pixels in the 4x4 block are transparent -Block4x4Encoding_RGB8A1 is used when there is a mixture of alphas in the 4x4 block - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_RGB8A1.h" - -#include "EtcBlock4x4.h" -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4Encoding_RGB8.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> - -namespace Etc -{ - - // #################################################################################################### - // Block4x4Encoding_RGB8A1 - // #################################################################################################### - - float Block4x4Encoding_RGB8A1::s_aafCwOpaqueUnsetTable[CW_RANGES][SELECTORS] = - { - { 0.0f / 255.0f, 8.0f / 255.0f, 0.0f / 255.0f, -8.0f / 255.0f }, - { 0.0f / 255.0f, 17.0f / 255.0f, 0.0f / 255.0f, -17.0f / 255.0f }, - { 0.0f / 255.0f, 29.0f / 255.0f, 0.0f / 255.0f, -29.0f / 255.0f }, - { 0.0f / 255.0f, 42.0f / 255.0f, 0.0f / 255.0f, -42.0f / 255.0f }, - { 0.0f / 255.0f, 60.0f / 255.0f, 0.0f / 255.0f, -60.0f / 255.0f }, - { 0.0f / 255.0f, 80.0f / 255.0f, 0.0f / 255.0f, -80.0f / 255.0f }, - { 0.0f / 255.0f, 106.0f / 255.0f, 0.0f / 255.0f, -106.0f / 255.0f }, - { 0.0f / 255.0f, 183.0f / 255.0f, 0.0f / 255.0f, -183.0f / 255.0f } - }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_RGB8A1::Block4x4Encoding_RGB8A1(void) - { - m_pencodingbitsRGB8 = nullptr; - m_boolOpaque = false; - m_boolTransparent = false; - m_boolPunchThroughPixels = true; - - } - Block4x4Encoding_RGB8A1::~Block4x4Encoding_RGB8A1(void) {} - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits - // - void Block4x4Encoding_RGB8A1::InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, - ErrorMetric a_errormetric) - { - - Block4x4Encoding_RGB8::InitFromSource(a_pblockParent, - a_pafrgbaSource, - a_paucEncodingBits, - a_errormetric); - - m_boolOpaque = a_pblockParent->GetSourceAlphaMix() == Block4x4::SourceAlphaMix::OPAQUE; - m_boolTransparent = a_pblockParent->GetSourceAlphaMix() == Block4x4::SourceAlphaMix::TRANSPARENT; - m_boolPunchThroughPixels = a_pblockParent->HasPunchThroughPixels(); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - if (m_pafrgbaSource[uiPixel].fA >= 0.5f) - { - m_afDecodedAlphas[uiPixel] = 1.0f; - } - else - { - m_afDecodedAlphas[uiPixel] = 0.0f; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_RGB8A1::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - - InitFromEncodingBits_ETC1(a_pblockParent, - a_paucEncodingBits, - a_pafrgbaSource, - a_errormetric); - - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)a_paucEncodingBits; - - // detect if there is a T, H or Planar mode present - int iRed1 = m_pencodingbitsRGB8->differential.red1; - int iDRed2 = m_pencodingbitsRGB8->differential.dred2; - int iRed2 = iRed1 + iDRed2; - - int iGreen1 = m_pencodingbitsRGB8->differential.green1; - int iDGreen2 = m_pencodingbitsRGB8->differential.dgreen2; - int iGreen2 = iGreen1 + iDGreen2; - - int iBlue1 = m_pencodingbitsRGB8->differential.blue1; - int iDBlue2 = m_pencodingbitsRGB8->differential.dblue2; - int iBlue2 = iBlue1 + iDBlue2; - - if (iRed2 < 0 || iRed2 > 31) - { - InitFromEncodingBits_T(); - } - else if (iGreen2 < 0 || iGreen2 > 31) - { - InitFromEncodingBits_H(); - } - else if (iBlue2 < 0 || iBlue2 > 31) - { - Block4x4Encoding_RGB8::InitFromEncodingBits_Planar(); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding assuming the encoding is an ETC1 mode. - // if it isn't an ETC1 mode, this will be overwritten later - // - void Block4x4Encoding_RGB8A1::InitFromEncodingBits_ETC1(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource, - a_errormetric); - - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)a_paucEncodingBits; - - m_mode = MODE_ETC1; - m_boolDiff = true; - m_boolFlip = m_pencodingbitsRGB8->differential.flip; - m_boolOpaque = m_pencodingbitsRGB8->differential.diff; - - int iR2 = m_pencodingbitsRGB8->differential.red1 + m_pencodingbitsRGB8->differential.dred2; - if (iR2 < 0) - { - iR2 = 0; - } - else if (iR2 > 31) - { - iR2 = 31; - } - - int iG2 = m_pencodingbitsRGB8->differential.green1 + m_pencodingbitsRGB8->differential.dgreen2; - if (iG2 < 0) - { - iG2 = 0; - } - else if (iG2 > 31) - { - iG2 = 31; - } - - int iB2 = m_pencodingbitsRGB8->differential.blue1 + m_pencodingbitsRGB8->differential.dblue2; - if (iB2 < 0) - { - iB2 = 0; - } - else if (iB2 > 31) - { - iB2 = 31; - } - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB5(m_pencodingbitsRGB8->differential.red1, m_pencodingbitsRGB8->differential.green1, m_pencodingbitsRGB8->differential.blue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)iR2, (unsigned char)iG2, (unsigned char)iB2); - - m_uiCW1 = m_pencodingbitsRGB8->differential.cw1; - m_uiCW2 = m_pencodingbitsRGB8->differential.cw2; - - Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(); - - Decode_ETC1(); - - CalcBlockError(); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding if T mode is detected - // - void Block4x4Encoding_RGB8A1::InitFromEncodingBits_T(void) - { - m_mode = MODE_T; - - unsigned char ucRed1 = (unsigned char)((m_pencodingbitsRGB8->t.red1a << 2) + - m_pencodingbitsRGB8->t.red1b); - unsigned char ucGreen1 = m_pencodingbitsRGB8->t.green1; - unsigned char ucBlue1 = m_pencodingbitsRGB8->t.blue1; - - unsigned char ucRed2 = m_pencodingbitsRGB8->t.red2; - unsigned char ucGreen2 = m_pencodingbitsRGB8->t.green2; - unsigned char ucBlue2 = m_pencodingbitsRGB8->t.blue2; - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4(ucRed1, ucGreen1, ucBlue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4(ucRed2, ucGreen2, ucBlue2); - - m_uiCW1 = (m_pencodingbitsRGB8->t.da << 1) + m_pencodingbitsRGB8->t.db; - - Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(); - - DecodePixels_T(); - - CalcBlockError(); - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding if H mode is detected - // - void Block4x4Encoding_RGB8A1::InitFromEncodingBits_H(void) - { - m_mode = MODE_H; - - unsigned char ucRed1 = m_pencodingbitsRGB8->h.red1; - unsigned char ucGreen1 = (unsigned char)((m_pencodingbitsRGB8->h.green1a << 1) + - m_pencodingbitsRGB8->h.green1b); - unsigned char ucBlue1 = (unsigned char)((m_pencodingbitsRGB8->h.blue1a << 3) + - (m_pencodingbitsRGB8->h.blue1b << 1) + - m_pencodingbitsRGB8->h.blue1c); - - unsigned char ucRed2 = m_pencodingbitsRGB8->h.red2; - unsigned char ucGreen2 = (unsigned char)((m_pencodingbitsRGB8->h.green2a << 1) + - m_pencodingbitsRGB8->h.green2b); - unsigned char ucBlue2 = m_pencodingbitsRGB8->h.blue2; - - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4(ucRed1, ucGreen1, ucBlue1); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4(ucRed2, ucGreen2, ucBlue2); - - // used to determine the LSB of the CW - unsigned int uiRGB1 = (unsigned int)(((int)ucRed1 << 16) + ((int)ucGreen1 << 8) + (int)ucBlue1); - unsigned int uiRGB2 = (unsigned int)(((int)ucRed2 << 16) + ((int)ucGreen2 << 8) + (int)ucBlue2); - - m_uiCW1 = (m_pencodingbitsRGB8->h.da << 2) + (m_pencodingbitsRGB8->h.db << 1); - if (uiRGB1 >= uiRGB2) - { - m_uiCW1++; - } - - Block4x4Encoding_ETC1::InitFromEncodingBits_Selectors(); - - DecodePixels_H(); - - CalcBlockError(); - } - - // ---------------------------------------------------------------------------------------------------- - // for ETC1 modes, set the decoded colors and decoded alpha based on the encoding state - // - void Block4x4Encoding_RGB8A1::Decode_ETC1(void) - { - - const unsigned int *pauiPixelOrder = m_boolFlip ? s_auiPixelOrderFlip1 : s_auiPixelOrderFlip0; - - for (unsigned int uiPixelOrder = 0; uiPixelOrder < PIXELS; uiPixelOrder++) - { - ColorFloatRGBA *pfrgbaCenter = uiPixelOrder < 8 ? &m_frgbaColor1 : &m_frgbaColor2; - unsigned int uiCW = uiPixelOrder < 8 ? m_uiCW1 : m_uiCW2; - - unsigned int uiPixel = pauiPixelOrder[uiPixelOrder]; - - float fDelta; - if (m_boolOpaque) - fDelta = Block4x4Encoding_ETC1::s_aafCwTable[uiCW][m_auiSelectors[uiPixel]]; - else - fDelta = s_aafCwOpaqueUnsetTable[uiCW][m_auiSelectors[uiPixel]]; - - if (m_boolOpaque == false && m_auiSelectors[uiPixel] == TRANSPARENT_SELECTOR) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel] = 0.0f; - } - else - { - m_afrgbaDecodedColors[uiPixel] = (*pfrgbaCenter + fDelta).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // for T mode, set the decoded colors and decoded alpha based on the encoding state - // - void Block4x4Encoding_RGB8A1::DecodePixels_T(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - ColorFloatRGBA frgbaDistance(fDistance, fDistance, fDistance, 0.0f); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - switch (m_auiSelectors[uiPixel]) - { - case 0: - m_afrgbaDecodedColors[uiPixel] = m_frgbaColor1; - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - - case 1: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 + frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - - case 2: - if (m_boolOpaque == false) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel] = 0.0f; - } - else - { - m_afrgbaDecodedColors[uiPixel] = m_frgbaColor2; - m_afDecodedAlphas[uiPixel] = 1.0f; - } - break; - - case 3: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 - frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // for H mode, set the decoded colors and decoded alpha based on the encoding state - // - void Block4x4Encoding_RGB8A1::DecodePixels_H(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - ColorFloatRGBA frgbaDistance(fDistance, fDistance, fDistance, 0.0f); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - switch (m_auiSelectors[uiPixel]) - { - case 0: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor1 + frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - - case 1: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor1 - frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - - case 2: - if (m_boolOpaque == false) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel] = 0.0f; - } - else - { - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 + frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - } - break; - - case 3: - m_afrgbaDecodedColors[uiPixel] = (m_frgbaColor2 - frgbaDistance).ClampRGB(); - m_afDecodedAlphas[uiPixel] = 1.0f; - break; - } - - } - - } - - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - // RGB8A1 can't use individual mode - // RGB8A1 with transparent pixels can't use planar mode - // - void Block4x4Encoding_RGB8A1::PerformIteration(float a_fEffort) - { - assert(!m_boolOpaque); - assert(!m_boolTransparent); - assert(!m_boolDone); - - switch (m_uiEncodingIterations) - { - case 0: - PerformFirstIteration(); - break; - - case 1: - TryDifferential(m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 2: - TryDifferential(!m_boolMostLikelyFlip, 1, 0, 0); - if (a_fEffort <= 39.5f) - { - m_boolDone = true; - } - break; - - case 3: - Block4x4Encoding_RGB8::CalculateBaseColorsForTAndH(); - TryT(1); - TryH(1); - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 4: - TryDegenerates1(); - if (a_fEffort <= 59.5f) - { - m_boolDone = true; - } - break; - - case 5: - TryDegenerates2(); - if (a_fEffort <= 69.5f) - { - m_boolDone = true; - } - break; - - case 6: - TryDegenerates3(); - if (a_fEffort <= 79.5f) - { - m_boolDone = true; - } - break; - - case 7: - TryDegenerates4(); - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - - SetDoneIfPerfect(); - - } - - // ---------------------------------------------------------------------------------------------------- - // find best initial encoding to ensure block has a valid encoding - // - void Block4x4Encoding_RGB8A1::PerformFirstIteration(void) - { - Block4x4Encoding_ETC1::CalculateMostLikelyFlip(); - - m_fError = FLT_MAX; - - TryDifferential(m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - TryDifferential(!m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - - } - - // ---------------------------------------------------------------------------------------------------- - // mostly copied from ETC1 - // differences: - // Block4x4Encoding_RGB8A1 encodingTry = *this; - // - void Block4x4Encoding_RGB8A1::TryDifferential(bool a_boolFlip, unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2) - { - - ColorFloatRGBA frgbaColor1; - ColorFloatRGBA frgbaColor2; - - const unsigned int *pauiPixelMapping1; - const unsigned int *pauiPixelMapping2; - - if (a_boolFlip) - { - frgbaColor1 = m_frgbaSourceAverageTop; - frgbaColor2 = m_frgbaSourceAverageBottom; - - pauiPixelMapping1 = s_auiTopPixelMapping; - pauiPixelMapping2 = s_auiBottomPixelMapping; - } - else - { - frgbaColor1 = m_frgbaSourceAverageLeft; - frgbaColor2 = m_frgbaSourceAverageRight; - - pauiPixelMapping1 = s_auiLeftPixelMapping; - pauiPixelMapping2 = s_auiRightPixelMapping; - } - - DifferentialTrys trys(frgbaColor1, frgbaColor2, pauiPixelMapping1, pauiPixelMapping2, - a_uiRadius, a_iGrayOffset1, a_iGrayOffset2); - - Block4x4Encoding_RGB8A1 encodingTry = *this; - encodingTry.m_boolFlip = a_boolFlip; - - encodingTry.TryDifferentialHalf(&trys.m_half1); - encodingTry.TryDifferentialHalf(&trys.m_half2); - - // find best halves that are within differential range - DifferentialTrys::Try *ptryBest1 = nullptr; - DifferentialTrys::Try *ptryBest2 = nullptr; - encodingTry.m_fError = FLT_MAX; - - // see if the best of each half are in differential range - int iDRed = trys.m_half2.m_ptryBest->m_iRed - trys.m_half1.m_ptryBest->m_iRed; - int iDGreen = trys.m_half2.m_ptryBest->m_iGreen - trys.m_half1.m_ptryBest->m_iGreen; - int iDBlue = trys.m_half2.m_ptryBest->m_iBlue - trys.m_half1.m_ptryBest->m_iBlue; - if (iDRed >= -4 && iDRed <= 3 && iDGreen >= -4 && iDGreen <= 3 && iDBlue >= -4 && iDBlue <= 3) - { - ptryBest1 = trys.m_half1.m_ptryBest; - ptryBest2 = trys.m_half2.m_ptryBest; - encodingTry.m_fError = trys.m_half1.m_ptryBest->m_fError + trys.m_half2.m_ptryBest->m_fError; - } - else - { - // else, find the next best halves that are in differential range - for (DifferentialTrys::Try *ptry1 = &trys.m_half1.m_atry[0]; - ptry1 < &trys.m_half1.m_atry[trys.m_half1.m_uiTrys]; - ptry1++) - { - for (DifferentialTrys::Try *ptry2 = &trys.m_half2.m_atry[0]; - ptry2 < &trys.m_half2.m_atry[trys.m_half2.m_uiTrys]; - ptry2++) - { - iDRed = ptry2->m_iRed - ptry1->m_iRed; - bool boolValidRedDelta = iDRed <= 3 && iDRed >= -4; - iDGreen = ptry2->m_iGreen - ptry1->m_iGreen; - bool boolValidGreenDelta = iDGreen <= 3 && iDGreen >= -4; - iDBlue = ptry2->m_iBlue - ptry1->m_iBlue; - bool boolValidBlueDelta = iDBlue <= 3 && iDBlue >= -4; - - if (boolValidRedDelta && boolValidGreenDelta && boolValidBlueDelta) - { - float fError = ptry1->m_fError + ptry2->m_fError; - - if (fError < encodingTry.m_fError) - { - encodingTry.m_fError = fError; - - ptryBest1 = ptry1; - ptryBest2 = ptry2; - } - } - - } - } - assert(encodingTry.m_fError < FLT_MAX); - assert(ptryBest1 != nullptr); - assert(ptryBest2 != nullptr); - } - - if (encodingTry.m_fError < m_fError) - { - m_mode = MODE_ETC1; - m_boolDiff = true; - m_boolFlip = encodingTry.m_boolFlip; - m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)ptryBest1->m_iRed, (unsigned char)ptryBest1->m_iGreen, (unsigned char)ptryBest1->m_iBlue); - m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB5((unsigned char)ptryBest2->m_iRed, (unsigned char)ptryBest2->m_iGreen, (unsigned char)ptryBest2->m_iBlue); - m_uiCW1 = ptryBest1->m_uiCW; - m_uiCW2 = ptryBest2->m_uiCW; - - m_fError = 0.0f; - for (unsigned int uiPixelOrder = 0; uiPixelOrder < PIXELS / 2; uiPixelOrder++) - { - unsigned int uiPixel1 = pauiPixelMapping1[uiPixelOrder]; - unsigned int uiPixel2 = pauiPixelMapping2[uiPixelOrder]; - - unsigned int uiSelector1 = ptryBest1->m_auiSelectors[uiPixelOrder]; - unsigned int uiSelector2 = ptryBest2->m_auiSelectors[uiPixelOrder]; - - m_auiSelectors[uiPixel1] = uiSelector1; - m_auiSelectors[uiPixel2] = ptryBest2->m_auiSelectors[uiPixelOrder]; - - if (uiSelector1 == TRANSPARENT_SELECTOR) - { - m_afrgbaDecodedColors[uiPixel1] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel1] = 0.0f; - } - else - { - float fDeltaRGB1 = s_aafCwOpaqueUnsetTable[m_uiCW1][uiSelector1]; - m_afrgbaDecodedColors[uiPixel1] = (m_frgbaColor1 + fDeltaRGB1).ClampRGB(); - m_afDecodedAlphas[uiPixel1] = 1.0f; - } - - if (uiSelector2 == TRANSPARENT_SELECTOR) - { - m_afrgbaDecodedColors[uiPixel2] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel2] = 0.0f; - } - else - { - float fDeltaRGB2 = s_aafCwOpaqueUnsetTable[m_uiCW2][uiSelector2]; - m_afrgbaDecodedColors[uiPixel2] = (m_frgbaColor2 + fDeltaRGB2).ClampRGB(); - m_afDecodedAlphas[uiPixel2] = 1.0f; - } - - float fDeltaA1 = m_afDecodedAlphas[uiPixel1] - m_pafrgbaSource[uiPixel1].fA; - m_fError += fDeltaA1 * fDeltaA1; - float fDeltaA2 = m_afDecodedAlphas[uiPixel2] - m_pafrgbaSource[uiPixel2].fA; - m_fError += fDeltaA2 * fDeltaA2; - } - - m_fError1 = ptryBest1->m_fError; - m_fError2 = ptryBest2->m_fError; - m_boolSeverelyBentDifferentialColors = trys.m_boolSeverelyBentColors; - m_fError = m_fError1 + m_fError2; - - // sanity check - { - int iRed1 = m_frgbaColor1.IntRed(31.0f); - int iGreen1 = m_frgbaColor1.IntGreen(31.0f); - int iBlue1 = m_frgbaColor1.IntBlue(31.0f); - - int iRed2 = m_frgbaColor2.IntRed(31.0f); - int iGreen2 = m_frgbaColor2.IntGreen(31.0f); - int iBlue2 = m_frgbaColor2.IntBlue(31.0f); - - iDRed = iRed2 - iRed1; - iDGreen = iGreen2 - iGreen1; - iDBlue = iBlue2 - iBlue1; - - assert(iDRed >= -4 && iDRed < 4); - assert(iDGreen >= -4 && iDGreen < 4); - assert(iDBlue >= -4 && iDBlue < 4); - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // mostly copied from ETC1 - // differences: - // uses s_aafCwOpaqueUnsetTable - // color for selector set to 0,0,0,0 - // - void Block4x4Encoding_RGB8A1::TryDifferentialHalf(DifferentialTrys::Half *a_phalf) - { - - a_phalf->m_ptryBest = nullptr; - float fBestTryError = FLT_MAX; - - a_phalf->m_uiTrys = 0; - for (int iRed = a_phalf->m_iRed - (int)a_phalf->m_uiRadius; - iRed <= a_phalf->m_iRed + (int)a_phalf->m_uiRadius; - iRed++) - { - assert(iRed >= 0 && iRed <= 31); - - for (int iGreen = a_phalf->m_iGreen - (int)a_phalf->m_uiRadius; - iGreen <= a_phalf->m_iGreen + (int)a_phalf->m_uiRadius; - iGreen++) - { - assert(iGreen >= 0 && iGreen <= 31); - - for (int iBlue = a_phalf->m_iBlue - (int)a_phalf->m_uiRadius; - iBlue <= a_phalf->m_iBlue + (int)a_phalf->m_uiRadius; - iBlue++) - { - assert(iBlue >= 0 && iBlue <= 31); - - DifferentialTrys::Try *ptry = &a_phalf->m_atry[a_phalf->m_uiTrys]; - assert(ptry < &a_phalf->m_atry[DifferentialTrys::Half::MAX_TRYS]); - - ptry->m_iRed = iRed; - ptry->m_iGreen = iGreen; - ptry->m_iBlue = iBlue; - ptry->m_fError = FLT_MAX; - ColorFloatRGBA frgbaColor = ColorFloatRGBA::ConvertFromRGB5((unsigned char)iRed, (unsigned char)iGreen, (unsigned char)iBlue); - - // try each CW - for (unsigned int uiCW = 0; uiCW < CW_RANGES; uiCW++) - { - unsigned int auiPixelSelectors[PIXELS / 2]; - ColorFloatRGBA afrgbaDecodedColors[PIXELS / 2]; - float afPixelErrors[PIXELS / 2] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - - // pre-compute decoded pixels for each selector - ColorFloatRGBA afrgbaSelectors[SELECTORS]; - assert(SELECTORS == 4); - afrgbaSelectors[0] = (frgbaColor + s_aafCwOpaqueUnsetTable[uiCW][0]).ClampRGB(); - afrgbaSelectors[1] = (frgbaColor + s_aafCwOpaqueUnsetTable[uiCW][1]).ClampRGB(); - afrgbaSelectors[2] = ColorFloatRGBA(); - afrgbaSelectors[3] = (frgbaColor + s_aafCwOpaqueUnsetTable[uiCW][3]).ClampRGB(); - - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ColorFloatRGBA *pfrgbaSourcePixel = &m_pafrgbaSource[a_phalf->m_pauiPixelMapping[uiPixel]]; - ColorFloatRGBA frgbaDecodedPixel; - - for (unsigned int uiSelector = 0; uiSelector < SELECTORS; uiSelector++) - { - if (pfrgbaSourcePixel->fA < 0.5f) - { - uiSelector = TRANSPARENT_SELECTOR; - } - else if (uiSelector == TRANSPARENT_SELECTOR) - { - continue; - } - - frgbaDecodedPixel = afrgbaSelectors[uiSelector]; - - float fPixelError; - - fPixelError = CalcPixelError(frgbaDecodedPixel, m_afDecodedAlphas[a_phalf->m_pauiPixelMapping[uiPixel]], - *pfrgbaSourcePixel); - - if (fPixelError < afPixelErrors[uiPixel]) - { - auiPixelSelectors[uiPixel] = uiSelector; - afrgbaDecodedColors[uiPixel] = frgbaDecodedPixel; - afPixelErrors[uiPixel] = fPixelError; - } - - if (uiSelector == TRANSPARENT_SELECTOR) - { - break; - } - } - } - - // add up all pixel errors - float fCWError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - fCWError += afPixelErrors[uiPixel]; - } - - // if best CW so far - if (fCWError < ptry->m_fError) - { - ptry->m_uiCW = uiCW; - for (unsigned int uiPixel = 0; uiPixel < 8; uiPixel++) - { - ptry->m_auiSelectors[uiPixel] = auiPixelSelectors[uiPixel]; - } - ptry->m_fError = fCWError; - } - - } - - if (ptry->m_fError < fBestTryError) - { - a_phalf->m_ptryBest = ptry; - fBestTryError = ptry->m_fError; - } - - assert(ptry->m_fError < FLT_MAX); - - a_phalf->m_uiTrys++; - } - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in T mode - // save this encoding if it improves the error - // - // since pixels that use base color1 don't use the distance table, color1 and color2 can be twiddled independently - // better encoding can be found if TWIDDLE_RADIUS is set to 2, but it will be much slower - // - void Block4x4Encoding_RGB8A1::TryT(unsigned int a_uiRadius) - { - Block4x4Encoding_RGB8A1 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_T; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - encodingTry.m_fError = FLT_MAX; - } - - int iColor1Red = m_frgbaOriginalColor1_TAndH.IntRed(15.0f); - int iColor1Green = m_frgbaOriginalColor1_TAndH.IntGreen(15.0f); - int iColor1Blue = m_frgbaOriginalColor1_TAndH.IntBlue(15.0f); - - int iMinRed1 = iColor1Red - (int)a_uiRadius; - if (iMinRed1 < 0) - { - iMinRed1 = 0; - } - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { - iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; - if (iMinGreen1 < 0) - { - iMinGreen1 = 0; - } - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { - iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; - if (iMinBlue1 < 0) - { - iMinBlue1 = 0; - } - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { - iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); - int iColor2Green = m_frgbaOriginalColor2_TAndH.IntGreen(15.0f); - int iColor2Blue = m_frgbaOriginalColor2_TAndH.IntBlue(15.0f); - - int iMinRed2 = iColor2Red - (int)a_uiRadius; - if (iMinRed2 < 0) - { - iMinRed2 = 0; - } - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { - iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; - if (iMinGreen2 < 0) - { - iMinGreen2 = 0; - } - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { - iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; - if (iMinBlue2 < 0) - { - iMinBlue2 = 0; - } - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { - iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) - { - encodingTry.m_uiCW1 = uiDistance; - - // twiddle m_frgbaOriginalColor2_TAndH - // twiddle color2 first, since it affects 3 selectors, while color1 only affects one selector - // - for (int iRed2 = iMinRed2; iRed2 <= iMaxRed2; iRed2++) - { - for (int iGreen2 = iMinGreen2; iGreen2 <= iMaxGreen2; iGreen2++) - { - for (int iBlue2 = iMinBlue2; iBlue2 <= iMaxBlue2; iBlue2++) - { - for (unsigned int uiBaseColorSwaps = 0; uiBaseColorSwaps < 2; uiBaseColorSwaps++) - { - if (uiBaseColorSwaps == 0) - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor1_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - } - else - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor1_TAndH; - } - - encodingTry.TryT_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - } - - // twiddle m_frgbaOriginalColor1_TAndH - for (int iRed1 = iMinRed1; iRed1 <= iMaxRed1; iRed1++) - { - for (int iGreen1 = iMinGreen1; iGreen1 <= iMaxGreen1; iGreen1++) - { - for (int iBlue1 = iMinBlue1; iBlue1 <= iMaxBlue1; iBlue1++) - { - for (unsigned int uiBaseColorSwaps = 0; uiBaseColorSwaps < 2; uiBaseColorSwaps++) - { - if (uiBaseColorSwaps == 0) - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor2_TAndH; - } - else - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor2_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - } - - encodingTry.TryT_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // find best selector combination for TryT - // called on an encodingTry - // - void Block4x4Encoding_RGB8A1::TryT_BestSelectorCombination(void) - { - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - - unsigned int auiBestPixelSelectors[PIXELS]; - float afBestPixelErrors[PIXELS] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - ColorFloatRGBA afrgbaBestDecodedPixels[PIXELS]; - ColorFloatRGBA afrgbaDecodedPixel[SELECTORS]; - - assert(SELECTORS == 4); - afrgbaDecodedPixel[0] = m_frgbaColor1; - afrgbaDecodedPixel[1] = (m_frgbaColor2 + fDistance).ClampRGB(); - afrgbaDecodedPixel[2] = ColorFloatRGBA(); - afrgbaDecodedPixel[3] = (m_frgbaColor2 - fDistance).ClampRGB(); - - // try each selector - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiMinSelector = 0; - unsigned int uiMaxSelector = SELECTORS - 1; - - if (m_pafrgbaSource[uiPixel].fA < 0.5f) - { - uiMinSelector = 2; - uiMaxSelector = 2; - } - - for (unsigned int uiSelector = uiMinSelector; uiSelector <= uiMaxSelector; uiSelector++) - { - float fPixelError = CalcPixelError(afrgbaDecodedPixel[uiSelector], m_afDecodedAlphas[uiPixel], - m_pafrgbaSource[uiPixel]); - - if (fPixelError < afBestPixelErrors[uiPixel]) - { - afBestPixelErrors[uiPixel] = fPixelError; - auiBestPixelSelectors[uiPixel] = uiSelector; - afrgbaBestDecodedPixels[uiPixel] = afrgbaDecodedPixel[uiSelector]; - } - } - } - - - // add up all of the pixel errors - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestPixelErrors[uiPixel]; - } - - if (fBlockError < m_fError) - { - m_fError = fBlockError; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = auiBestPixelSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = afrgbaBestDecodedPixels[uiPixel]; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try encoding in H mode - // save this encoding if it improves the error - // - // since all pixels use the distance table, color1 and color2 can NOT be twiddled independently - // TWIDDLE_RADIUS of 2 is WAY too slow - // - void Block4x4Encoding_RGB8A1::TryH(unsigned int a_uiRadius) - { - Block4x4Encoding_RGB8A1 encodingTry = *this; - - // init "try" - { - encodingTry.m_mode = MODE_H; - encodingTry.m_boolDiff = true; - encodingTry.m_boolFlip = false; - encodingTry.m_fError = FLT_MAX; - } - - int iColor1Red = m_frgbaOriginalColor1_TAndH.IntRed(15.0f); - int iColor1Green = m_frgbaOriginalColor1_TAndH.IntGreen(15.0f); - int iColor1Blue = m_frgbaOriginalColor1_TAndH.IntBlue(15.0f); - - int iMinRed1 = iColor1Red - (int)a_uiRadius; - if (iMinRed1 < 0) - { - iMinRed1 = 0; - } - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { - iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; - if (iMinGreen1 < 0) - { - iMinGreen1 = 0; - } - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { - iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; - if (iMinBlue1 < 0) - { - iMinBlue1 = 0; - } - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { - iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); - int iColor2Green = m_frgbaOriginalColor2_TAndH.IntGreen(15.0f); - int iColor2Blue = m_frgbaOriginalColor2_TAndH.IntBlue(15.0f); - - int iMinRed2 = iColor2Red - (int)a_uiRadius; - if (iMinRed2 < 0) - { - iMinRed2 = 0; - } - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { - iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; - if (iMinGreen2 < 0) - { - iMinGreen2 = 0; - } - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { - iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; - if (iMinBlue2 < 0) - { - iMinBlue2 = 0; - } - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { - iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) - { - encodingTry.m_uiCW1 = uiDistance; - - // twiddle m_frgbaOriginalColor1_TAndH - for (int iRed1 = iMinRed1; iRed1 <= iMaxRed1; iRed1++) - { - for (int iGreen1 = iMinGreen1; iGreen1 <= iMaxGreen1; iGreen1++) - { - for (int iBlue1 = iMinBlue1; iBlue1 <= iMaxBlue1; iBlue1++) - { - encodingTry.m_frgbaColor1 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed1, (unsigned char)iGreen1, (unsigned char)iBlue1); - encodingTry.m_frgbaColor2 = m_frgbaOriginalColor2_TAndH; - - // if color1 == color2, H encoding issues can pop up, so abort - if (iRed1 == iColor2Red && iGreen1 == iColor2Green && iBlue1 == iColor2Blue) - { - continue; - } - - encodingTry.TryH_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - - // twiddle m_frgbaOriginalColor2_TAndH - for (int iRed2 = iMinRed2; iRed2 <= iMaxRed2; iRed2++) - { - for (int iGreen2 = iMinGreen2; iGreen2 <= iMaxGreen2; iGreen2++) - { - for (int iBlue2 = iMinBlue2; iBlue2 <= iMaxBlue2; iBlue2++) - { - encodingTry.m_frgbaColor1 = m_frgbaOriginalColor1_TAndH; - encodingTry.m_frgbaColor2 = ColorFloatRGBA::ConvertFromRGB4((unsigned char)iRed2, (unsigned char)iGreen2, (unsigned char)iBlue2); - - // if color1 == color2, H encoding issues can pop up, so abort - if (iRed2 == iColor1Red && iGreen2 == iColor1Green && iBlue2 == iColor1Blue) - { - continue; - } - - encodingTry.TryH_BestSelectorCombination(); - - if (encodingTry.m_fError < m_fError) - { - m_mode = encodingTry.m_mode; - m_boolDiff = encodingTry.m_boolDiff; - m_boolFlip = encodingTry.m_boolFlip; - - m_frgbaColor1 = encodingTry.m_frgbaColor1; - m_frgbaColor2 = encodingTry.m_frgbaColor2; - m_uiCW1 = encodingTry.m_uiCW1; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = encodingTry.m_auiSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = encodingTry.m_afrgbaDecodedColors[uiPixel]; - } - - m_fError = encodingTry.m_fError; - } - } - } - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // find best selector combination for TryH - // called on an encodingTry - // - void Block4x4Encoding_RGB8A1::TryH_BestSelectorCombination(void) - { - - // abort if colors and CW will pose an encoding problem - { - unsigned int uiRed1 = (unsigned int)m_frgbaColor1.IntRed(255.0f); - unsigned int uiGreen1 = (unsigned int)m_frgbaColor1.IntGreen(255.0f); - unsigned int uiBlue1 = (unsigned int)m_frgbaColor1.IntBlue(255.0f); - unsigned int uiColorValue1 = (uiRed1 << 16) + (uiGreen1 << 8) + uiBlue1; - - unsigned int uiRed2 = (unsigned int)m_frgbaColor2.IntRed(255.0f); - unsigned int uiGreen2 = (unsigned int)m_frgbaColor2.IntGreen(255.0f); - unsigned int uiBlue2 = (unsigned int)m_frgbaColor2.IntBlue(255.0f); - unsigned int uiColorValue2 = (uiRed2 << 16) + (uiGreen2 << 8) + uiBlue2; - - unsigned int uiCWLsb = m_uiCW1 & 1; - - if ((uiColorValue1 >= (uiColorValue2 & uiCWLsb)) == 0 || - (uiColorValue1 < (uiColorValue2 & uiCWLsb)) == 1) - { - return; - } - } - - float fDistance = s_afTHDistanceTable[m_uiCW1]; - - unsigned int auiBestPixelSelectors[PIXELS]; - float afBestPixelErrors[PIXELS] = { FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, - FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX }; - ColorFloatRGBA afrgbaBestDecodedPixels[PIXELS]; - ColorFloatRGBA afrgbaDecodedPixel[SELECTORS]; - - assert(SELECTORS == 4); - afrgbaDecodedPixel[0] = (m_frgbaColor1 + fDistance).ClampRGB(); - afrgbaDecodedPixel[1] = (m_frgbaColor1 - fDistance).ClampRGB(); - afrgbaDecodedPixel[2] = ColorFloatRGBA();; - afrgbaDecodedPixel[3] = (m_frgbaColor2 - fDistance).ClampRGB(); - - - // try each selector - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiMinSelector = 0; - unsigned int uiMaxSelector = SELECTORS - 1; - - if (m_pafrgbaSource[uiPixel].fA < 0.5f) - { - uiMinSelector = 2; - uiMaxSelector = 2; - } - - for (unsigned int uiSelector = uiMinSelector; uiSelector <= uiMaxSelector; uiSelector++) - { - float fPixelError = CalcPixelError(afrgbaDecodedPixel[uiSelector], m_afDecodedAlphas[uiPixel], - m_pafrgbaSource[uiPixel]); - - if (fPixelError < afBestPixelErrors[uiPixel]) - { - afBestPixelErrors[uiPixel] = fPixelError; - auiBestPixelSelectors[uiPixel] = uiSelector; - afrgbaBestDecodedPixels[uiPixel] = afrgbaDecodedPixel[uiSelector]; - } - } - } - - - // add up all of the pixel errors - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestPixelErrors[uiPixel]; - } - - if (fBlockError < m_fError) - { - m_fError = fBlockError; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = auiBestPixelSelectors[uiPixel]; - m_afrgbaDecodedColors[uiPixel] = afrgbaBestDecodedPixels[uiPixel]; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 1 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_RGB8A1::TryDegenerates1(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -2, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 2, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 0, 2); - TryDifferential(m_boolMostLikelyFlip, 1, 0, -2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 2 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_RGB8A1::TryDegenerates2(void) - { - - TryDifferential(!m_boolMostLikelyFlip, 1, -2, 0); - TryDifferential(!m_boolMostLikelyFlip, 1, 2, 0); - TryDifferential(!m_boolMostLikelyFlip, 1, 0, 2); - TryDifferential(!m_boolMostLikelyFlip, 1, 0, -2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 3 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_RGB8A1::TryDegenerates3(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -2, -2); - TryDifferential(m_boolMostLikelyFlip, 1, -2, 2); - TryDifferential(m_boolMostLikelyFlip, 1, 2, -2); - TryDifferential(m_boolMostLikelyFlip, 1, 2, 2); - - } - - // ---------------------------------------------------------------------------------------------------- - // try version 4 of the degenerate search - // degenerate encodings use basecolor movement and a subset of the selectors to find useful encodings - // each subsequent version of the degenerate search uses more basecolor movement and is less likely to - // be successfull - // - void Block4x4Encoding_RGB8A1::TryDegenerates4(void) - { - - TryDifferential(m_boolMostLikelyFlip, 1, -4, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 4, 0); - TryDifferential(m_boolMostLikelyFlip, 1, 0, 4); - TryDifferential(m_boolMostLikelyFlip, 1, 0, -4); - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RGB8A1::SetEncodingBits(void) - { - switch (m_mode) - { - case MODE_ETC1: - SetEncodingBits_ETC1(); - break; - - case MODE_T: - SetEncodingBits_T(); - break; - - case MODE_H: - SetEncodingBits_H(); - break; - - case MODE_PLANAR: - Block4x4Encoding_RGB8::SetEncodingBits_Planar(); - break; - - default: - assert(false); - } - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state if ETC1 mode - // - void Block4x4Encoding_RGB8A1::SetEncodingBits_ETC1(void) - { - - // there is no individual mode in RGB8A1 - assert(m_boolDiff); - - int iRed1 = m_frgbaColor1.IntRed(31.0f); - int iGreen1 = m_frgbaColor1.IntGreen(31.0f); - int iBlue1 = m_frgbaColor1.IntBlue(31.0f); - - int iRed2 = m_frgbaColor2.IntRed(31.0f); - int iGreen2 = m_frgbaColor2.IntGreen(31.0f); - int iBlue2 = m_frgbaColor2.IntBlue(31.0f); - - int iDRed2 = iRed2 - iRed1; - int iDGreen2 = iGreen2 - iGreen1; - int iDBlue2 = iBlue2 - iBlue1; - - assert(iDRed2 >= -4 && iDRed2 < 4); - assert(iDGreen2 >= -4 && iDGreen2 < 4); - assert(iDBlue2 >= -4 && iDBlue2 < 4); - - m_pencodingbitsRGB8->differential.red1 = iRed1; - m_pencodingbitsRGB8->differential.green1 = iGreen1; - m_pencodingbitsRGB8->differential.blue1 = iBlue1; - - m_pencodingbitsRGB8->differential.dred2 = iDRed2; - m_pencodingbitsRGB8->differential.dgreen2 = iDGreen2; - m_pencodingbitsRGB8->differential.dblue2 = iDBlue2; - - m_pencodingbitsRGB8->individual.cw1 = m_uiCW1; - m_pencodingbitsRGB8->individual.cw2 = m_uiCW2; - - SetEncodingBits_Selectors(); - - // in RGB8A1 encoding bits, opaque replaces differential - m_pencodingbitsRGB8->differential.diff = !m_boolPunchThroughPixels; - - m_pencodingbitsRGB8->individual.flip = m_boolFlip; - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state if T mode - // - void Block4x4Encoding_RGB8A1::SetEncodingBits_T(void) - { - static const bool SANITY_CHECK = true; - - assert(m_mode == MODE_T); - assert(m_boolDiff == true); - - unsigned int uiRed1 = (unsigned int)m_frgbaColor1.IntRed(15.0f); - unsigned int uiGreen1 = (unsigned int)m_frgbaColor1.IntGreen(15.0f); - unsigned int uiBlue1 = (unsigned int)m_frgbaColor1.IntBlue(15.0f); - - unsigned int uiRed2 = (unsigned int)m_frgbaColor2.IntRed(15.0f); - unsigned int uiGreen2 = (unsigned int)m_frgbaColor2.IntGreen(15.0f); - unsigned int uiBlue2 = (unsigned int)m_frgbaColor2.IntBlue(15.0f); - - m_pencodingbitsRGB8->t.red1a = uiRed1 >> 2; - m_pencodingbitsRGB8->t.red1b = uiRed1; - m_pencodingbitsRGB8->t.green1 = uiGreen1; - m_pencodingbitsRGB8->t.blue1 = uiBlue1; - - m_pencodingbitsRGB8->t.red2 = uiRed2; - m_pencodingbitsRGB8->t.green2 = uiGreen2; - m_pencodingbitsRGB8->t.blue2 = uiBlue2; - - m_pencodingbitsRGB8->t.da = m_uiCW1 >> 1; - m_pencodingbitsRGB8->t.db = m_uiCW1; - - // in RGB8A1 encoding bits, opaque replaces differential - m_pencodingbitsRGB8->differential.diff = !m_boolPunchThroughPixels; - - Block4x4Encoding_ETC1::SetEncodingBits_Selectors(); - - // create an invalid R differential to trigger T mode - m_pencodingbitsRGB8->t.detect1 = 0; - m_pencodingbitsRGB8->t.detect2 = 0; - int iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - if (iRed2 >= 4) - { - m_pencodingbitsRGB8->t.detect1 = 7; - m_pencodingbitsRGB8->t.detect2 = 0; - } - else - { - m_pencodingbitsRGB8->t.detect1 = 0; - m_pencodingbitsRGB8->t.detect2 = 1; - } - - if (SANITY_CHECK) - { - iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - - // make sure red overflows - assert(iRed2 < 0 || iRed2 > 31); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state if H mode - // - // colors and selectors may need to swap in order to generate lsb of distance index - // - void Block4x4Encoding_RGB8A1::SetEncodingBits_H(void) - { - static const bool SANITY_CHECK = true; - - assert(m_mode == MODE_H); - assert(m_boolDiff == true); - - unsigned int uiRed1 = (unsigned int)m_frgbaColor1.IntRed(15.0f); - unsigned int uiGreen1 = (unsigned int)m_frgbaColor1.IntGreen(15.0f); - unsigned int uiBlue1 = (unsigned int)m_frgbaColor1.IntBlue(15.0f); - - unsigned int uiRed2 = (unsigned int)m_frgbaColor2.IntRed(15.0f); - unsigned int uiGreen2 = (unsigned int)m_frgbaColor2.IntGreen(15.0f); - unsigned int uiBlue2 = (unsigned int)m_frgbaColor2.IntBlue(15.0f); - - unsigned int uiColor1 = (uiRed1 << 16) + (uiGreen1 << 8) + uiBlue1; - unsigned int uiColor2 = (uiRed2 << 16) + (uiGreen2 << 8) + uiBlue2; - - bool boolOddDistance = m_uiCW1 & 1; - bool boolSwapColors = (uiColor1 < uiColor2) ^ !boolOddDistance; - - if (boolSwapColors) - { - m_pencodingbitsRGB8->h.red1 = uiRed2; - m_pencodingbitsRGB8->h.green1a = uiGreen2 >> 1; - m_pencodingbitsRGB8->h.green1b = uiGreen2; - m_pencodingbitsRGB8->h.blue1a = uiBlue2 >> 3; - m_pencodingbitsRGB8->h.blue1b = uiBlue2 >> 1; - m_pencodingbitsRGB8->h.blue1c = uiBlue2; - - m_pencodingbitsRGB8->h.red2 = uiRed1; - m_pencodingbitsRGB8->h.green2a = uiGreen1 >> 1; - m_pencodingbitsRGB8->h.green2b = uiGreen1; - m_pencodingbitsRGB8->h.blue2 = uiBlue1; - - m_pencodingbitsRGB8->h.da = m_uiCW1 >> 2; - m_pencodingbitsRGB8->h.db = m_uiCW1 >> 1; - } - else - { - m_pencodingbitsRGB8->h.red1 = uiRed1; - m_pencodingbitsRGB8->h.green1a = uiGreen1 >> 1; - m_pencodingbitsRGB8->h.green1b = uiGreen1; - m_pencodingbitsRGB8->h.blue1a = uiBlue1 >> 3; - m_pencodingbitsRGB8->h.blue1b = uiBlue1 >> 1; - m_pencodingbitsRGB8->h.blue1c = uiBlue1; - - m_pencodingbitsRGB8->h.red2 = uiRed2; - m_pencodingbitsRGB8->h.green2a = uiGreen2 >> 1; - m_pencodingbitsRGB8->h.green2b = uiGreen2; - m_pencodingbitsRGB8->h.blue2 = uiBlue2; - - m_pencodingbitsRGB8->h.da = m_uiCW1 >> 2; - m_pencodingbitsRGB8->h.db = m_uiCW1 >> 1; - } - - // in RGB8A1 encoding bits, opaque replaces differential - m_pencodingbitsRGB8->differential.diff = !m_boolPunchThroughPixels; - - Block4x4Encoding_ETC1::SetEncodingBits_Selectors(); - - if (boolSwapColors) - { - m_pencodingbitsRGB8->h.selectors ^= 0x0000FFFF; - } - - // create an invalid R differential to trigger T mode - m_pencodingbitsRGB8->h.detect1 = 0; - m_pencodingbitsRGB8->h.detect2 = 0; - m_pencodingbitsRGB8->h.detect3 = 0; - int iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - int iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - if (iRed2 < 0 || iRed2 > 31) - { - m_pencodingbitsRGB8->h.detect1 = 1; - } - if (iGreen2 >= 4) - { - m_pencodingbitsRGB8->h.detect2 = 7; - m_pencodingbitsRGB8->h.detect3 = 0; - } - else - { - m_pencodingbitsRGB8->h.detect2 = 0; - m_pencodingbitsRGB8->h.detect3 = 1; - } - - if (SANITY_CHECK) - { - iRed2 = (int)m_pencodingbitsRGB8->differential.red1 + (int)m_pencodingbitsRGB8->differential.dred2; - iGreen2 = (int)m_pencodingbitsRGB8->differential.green1 + (int)m_pencodingbitsRGB8->differential.dgreen2; - - // make sure red doesn't overflow and green does - assert(iRed2 >= 0 && iRed2 <= 31); - assert(iGreen2 < 0 || iGreen2 > 31); - } - - } - - // #################################################################################################### - // Block4x4Encoding_RGB8A1_Opaque - // #################################################################################################### - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RGB8A1_Opaque::PerformIteration(float a_fEffort) - { - assert(!m_boolPunchThroughPixels); - assert(!m_boolTransparent); - assert(!m_boolDone); - - switch (m_uiEncodingIterations) - { - case 0: - PerformFirstIteration(); - break; - - case 1: - Block4x4Encoding_ETC1::TryDifferential(m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 2: - Block4x4Encoding_ETC1::TryDifferential(!m_boolMostLikelyFlip, 1, 0, 0); - break; - - case 3: - Block4x4Encoding_RGB8::TryPlanar(1); - break; - - case 4: - Block4x4Encoding_RGB8::TryTAndH(1); - if (a_fEffort <= 49.5f) - { - m_boolDone = true; - } - break; - - case 5: - Block4x4Encoding_ETC1::TryDegenerates1(); - if (a_fEffort <= 59.5f) - { - m_boolDone = true; - } - break; - - case 6: - Block4x4Encoding_ETC1::TryDegenerates2(); - if (a_fEffort <= 69.5f) - { - m_boolDone = true; - } - break; - - case 7: - Block4x4Encoding_ETC1::TryDegenerates3(); - if (a_fEffort <= 79.5f) - { - m_boolDone = true; - } - break; - - case 8: - Block4x4Encoding_ETC1::TryDegenerates4(); - m_boolDone = true; - break; - - default: - assert(0); - break; - } - - m_uiEncodingIterations++; - SetDoneIfPerfect(); - } - - // ---------------------------------------------------------------------------------------------------- - // find best initial encoding to ensure block has a valid encoding - // - void Block4x4Encoding_RGB8A1_Opaque::PerformFirstIteration(void) - { - - // set decoded alphas - // calculate alpha error - m_fError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afDecodedAlphas[uiPixel] = 1.0f; - - float fDeltaA = 1.0f - m_pafrgbaSource[uiPixel].fA; - m_fError += fDeltaA * fDeltaA; - } - - CalculateMostLikelyFlip(); - - m_fError = FLT_MAX; - - Block4x4Encoding_ETC1::TryDifferential(m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - Block4x4Encoding_ETC1::TryDifferential(!m_boolMostLikelyFlip, 0, 0, 0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - Block4x4Encoding_RGB8::TryPlanar(0); - SetDoneIfPerfect(); - if (m_boolDone) - { - return; - } - Block4x4Encoding_RGB8::TryTAndH(0); - SetDoneIfPerfect(); - } - - // #################################################################################################### - // Block4x4Encoding_RGB8A1_Transparent - // #################################################################################################### - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RGB8A1_Transparent::PerformIteration(float ) - { - assert(!m_boolOpaque); - assert(m_boolTransparent); - assert(!m_boolDone); - assert(m_uiEncodingIterations == 0); - - m_mode = MODE_ETC1; - m_boolDiff = true; - m_boolFlip = false; - - m_uiCW1 = 0; - m_uiCW2 = 0; - - m_frgbaColor1 = ColorFloatRGBA(); - m_frgbaColor2 = ColorFloatRGBA(); - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiSelectors[uiPixel] = TRANSPARENT_SELECTOR; - - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel] = 0.0f; - } - - CalcBlockError(); - - m_boolDone = true; - m_uiEncodingIterations++; - - } - - // ---------------------------------------------------------------------------------------------------- - // -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.h deleted file mode 100644 index ff26e462f8..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.h +++ /dev/null @@ -1,129 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding_RGB8.h" -#include "EtcErrorMetric.h" -#include "EtcBlock4x4EncodingBits.h" - -namespace Etc -{ - - // ################################################################################ - // Block4x4Encoding_RGB8A1 - // RGB8A1 if not completely opaque or transparent - // ################################################################################ - - class Block4x4Encoding_RGB8A1 : public Block4x4Encoding_RGB8 - { - public: - - static const unsigned int TRANSPARENT_SELECTOR = 2; - - Block4x4Encoding_RGB8A1(void); - virtual ~Block4x4Encoding_RGB8A1(void); - - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, - ErrorMetric a_errormetric); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - void InitFromEncodingBits_ETC1(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric); - - void InitFromEncodingBits_T(void); - void InitFromEncodingBits_H(void); - - void PerformFirstIteration(void); - - void Decode_ETC1(void); - void DecodePixels_T(void); - void DecodePixels_H(void); - void SetEncodingBits_ETC1(void); - void SetEncodingBits_T(void); - void SetEncodingBits_H(void); - - protected: - - bool m_boolOpaque; // all source pixels have alpha >= 0.5 - bool m_boolTransparent; // all source pixels have alpha < 0.5 - bool m_boolPunchThroughPixels; // some source pixels have alpha < 0.5 - - static float s_aafCwOpaqueUnsetTable[CW_RANGES][SELECTORS]; - - private: - - void TryDifferential(bool a_boolFlip, unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2); - void TryDifferentialHalf(DifferentialTrys::Half *a_phalf); - - void TryT(unsigned int a_uiRadius); - void TryT_BestSelectorCombination(void); - void TryH(unsigned int a_uiRadius); - void TryH_BestSelectorCombination(void); - - void TryDegenerates1(void); - void TryDegenerates2(void); - void TryDegenerates3(void); - void TryDegenerates4(void); - - }; - - // ################################################################################ - // Block4x4Encoding_RGB8A1_Opaque - // RGB8A1 if all pixels have alpha==1 - // ################################################################################ - - class Block4x4Encoding_RGB8A1_Opaque : public Block4x4Encoding_RGB8A1 - { - public: - - virtual void PerformIteration(float a_fEffort); - - void PerformFirstIteration(void); - - private: - - }; - - // ################################################################################ - // Block4x4Encoding_RGB8A1_Transparent - // RGB8A1 if all pixels have alpha==0 - // ################################################################################ - - class Block4x4Encoding_RGB8A1_Transparent : public Block4x4Encoding_RGB8A1 - { - public: - - virtual void PerformIteration(float a_fEffort); - - private: - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.cpp deleted file mode 100644 index 600c7ab405..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.cpp +++ /dev/null @@ -1,474 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcBlock4x4Encoding_RGBA8.cpp contains: - Block4x4Encoding_RGBA8 - Block4x4Encoding_RGBA8_Opaque - Block4x4Encoding_RGBA8_Transparent - -These encoders are used when targetting file format RGBA8. - -Block4x4Encoding_RGBA8_Opaque is used when all pixels in the 4x4 block are opaque -Block4x4Encoding_RGBA8_Transparent is used when all pixels in the 4x4 block are transparent -Block4x4Encoding_RGBA8 is used when there is a mixture of alphas in the 4x4 block - -*/ - -#include "EtcConfig.h" -#include "EtcBlock4x4Encoding_RGBA8.h" - -#include "EtcBlock4x4EncodingBits.h" -#include "EtcBlock4x4.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <float.h> -#include <limits> - -namespace Etc -{ - - // #################################################################################################### - // Block4x4Encoding_RGBA8 - // #################################################################################################### - - float Block4x4Encoding_RGBA8::s_aafModifierTable[MODIFIER_TABLE_ENTRYS][ALPHA_SELECTORS] - { - { -3.0f / 255.0f, -6.0f / 255.0f, -9.0f / 255.0f, -15.0f / 255.0f, 2.0f / 255.0f, 5.0f / 255.0f, 8.0f / 255.0f, 14.0f / 255.0f }, - { -3.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, -13.0f / 255.0f, 2.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f, 12.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -13.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 12.0f / 255.0f }, - { -2.0f / 255.0f, -4.0f / 255.0f, -6.0f / 255.0f, -13.0f / 255.0f, 1.0f / 255.0f, 3.0f / 255.0f, 5.0f / 255.0f, 12.0f / 255.0f }, - - { -3.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -12.0f / 255.0f, 2.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 11.0f / 255.0f }, - { -3.0f / 255.0f, -7.0f / 255.0f, -9.0f / 255.0f, -11.0f / 255.0f, 2.0f / 255.0f, 6.0f / 255.0f, 8.0f / 255.0f, 10.0f / 255.0f }, - { -4.0f / 255.0f, -7.0f / 255.0f, -8.0f / 255.0f, -11.0f / 255.0f, 3.0f / 255.0f, 6.0f / 255.0f, 7.0f / 255.0f, 10.0f / 255.0f }, - { -3.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -11.0f / 255.0f, 2.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 10.0f / 255.0f }, - - { -2.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -4.0f / 255.0f, -8.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 3.0f / 255.0f, 7.0f / 255.0f, 9.0f / 255.0f }, - { -2.0f / 255.0f, -5.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, 1.0f / 255.0f, 4.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f }, - - { -3.0f / 255.0f, -4.0f / 255.0f, -7.0f / 255.0f, -10.0f / 255.0f, 2.0f / 255.0f, 3.0f / 255.0f, 6.0f / 255.0f, 9.0f / 255.0f }, - { -1.0f / 255.0f, -2.0f / 255.0f, -3.0f / 255.0f, -10.0f / 255.0f, 0.0f / 255.0f, 1.0f / 255.0f, 2.0f / 255.0f, 9.0f / 255.0f }, - { -4.0f / 255.0f, -6.0f / 255.0f, -8.0f / 255.0f, -9.0f / 255.0f, 3.0f / 255.0f, 5.0f / 255.0f, 7.0f / 255.0f, 8.0f / 255.0f }, - { -3.0f / 255.0f, -5.0f / 255.0f, -7.0f / 255.0f, -9.0f / 255.0f, 2.0f / 255.0f, 4.0f / 255.0f, 6.0f / 255.0f, 8.0f / 255.0f } - }; - - // ---------------------------------------------------------------------------------------------------- - // - Block4x4Encoding_RGBA8::Block4x4Encoding_RGBA8(void) - { - - m_pencodingbitsA8 = nullptr; - - } - Block4x4Encoding_RGBA8::~Block4x4Encoding_RGBA8(void) {} - // ---------------------------------------------------------------------------------------------------- - // initialization prior to encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits - // - void Block4x4Encoding_RGBA8::InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric) - { - Block4x4Encoding::Init(a_pblockParent, a_pafrgbaSource,a_errormetric); - - m_pencodingbitsA8 = (Block4x4EncodingBits_A8 *)a_paucEncodingBits; - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)(a_paucEncodingBits + sizeof(Block4x4EncodingBits_A8)); - - } - - // ---------------------------------------------------------------------------------------------------- - // initialization from the encoding bits of a previous encoding - // a_pblockParent points to the block associated with this encoding - // a_errormetric is used to choose the best encoding - // a_pafrgbaSource points to a 4x4 block subset of the source image - // a_paucEncodingBits points to the final encoding bits of a previous encoding - // - void Block4x4Encoding_RGBA8::InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric) - { - - m_pencodingbitsA8 = (Block4x4EncodingBits_A8 *)a_paucEncodingBits; - m_pencodingbitsRGB8 = (Block4x4EncodingBits_RGB8 *)(a_paucEncodingBits + sizeof(Block4x4EncodingBits_A8)); - - // init RGB portion - Block4x4Encoding_RGB8::InitFromEncodingBits(a_pblockParent, - (unsigned char *) m_pencodingbitsRGB8, - a_pafrgbaSource, - a_errormetric); - - // init A8 portion - // has to be done after InitFromEncodingBits() - { - m_fBase = m_pencodingbitsA8->data.base / 255.0f; - m_fMultiplier = (float)m_pencodingbitsA8->data.multiplier; - m_uiModifierTableIndex = m_pencodingbitsA8->data.table; - - unsigned long long int ulliSelectorBits = 0; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors0 << 40; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors1 << 32; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors2 << 24; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors3 << 16; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors4 << 8; - ulliSelectorBits |= (unsigned long long int)m_pencodingbitsA8->data.selectors5; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - m_auiAlphaSelectors[uiPixel] = (ulliSelectorBits >> uiShift) & (ALPHA_SELECTORS - 1); - } - - // decode the alphas - // calc alpha error - m_fError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afDecodedAlphas[uiPixel] = DecodePixelAlpha(m_fBase, m_fMultiplier, - m_uiModifierTableIndex, - m_auiAlphaSelectors[uiPixel]); - - float fDeltaAlpha = m_afDecodedAlphas[uiPixel] - m_pafrgbaSource[uiPixel].fA; - m_fError += fDeltaAlpha * fDeltaAlpha; - } - } - - // redo error calc to include alpha - CalcBlockError(); - - } - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - // similar to Block4x4Encoding_RGB8_Base::Encode_RGB8(), but with alpha added - // - void Block4x4Encoding_RGBA8::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - - if (m_uiEncodingIterations == 0) - { - if (a_fEffort < 24.9f) - { - CalculateA8(0.0f); - } - else if (a_fEffort < 49.9f) - { - CalculateA8(1.0f); - } - else - { - CalculateA8(2.0f); - } - } - - Block4x4Encoding_RGB8::PerformIteration(a_fEffort); - - } - - // ---------------------------------------------------------------------------------------------------- - // find the best combination of base alpga, multiplier and selectors - // - // a_fRadius limits the range of base alpha to try - // - void Block4x4Encoding_RGBA8::CalculateA8(float a_fRadius) - { - - // find min/max alpha - float fMinAlpha = 1.0f; - float fMaxAlpha = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fAlpha = m_pafrgbaSource[uiPixel].fA; - - // ignore border pixels - if (isnan(fAlpha)) - { - continue; - } - - if (fAlpha < fMinAlpha) - { - fMinAlpha = fAlpha; - } - if (fAlpha > fMaxAlpha) - { - fMaxAlpha = fAlpha; - } - } - assert(fMinAlpha <= fMaxAlpha); - - float fAlphaRange = fMaxAlpha - fMinAlpha; - - // try each modifier table entry - m_fError = FLT_MAX; // artificially high value - for (unsigned int uiTableEntry = 0; uiTableEntry < MODIFIER_TABLE_ENTRYS; uiTableEntry++) - { - static const unsigned int MIN_VALUE_SELECTOR = 3; - static const unsigned int MAX_VALUE_SELECTOR = 7; - - float fTableEntryCenter = -s_aafModifierTable[uiTableEntry][MIN_VALUE_SELECTOR]; - - float fTableEntryRange = s_aafModifierTable[uiTableEntry][MAX_VALUE_SELECTOR] - - s_aafModifierTable[uiTableEntry][MIN_VALUE_SELECTOR]; - - float fCenterRatio = fTableEntryCenter / fTableEntryRange; - - float fCenter = fMinAlpha + fCenterRatio*fAlphaRange; - fCenter = roundf(255.0f * fCenter) / 255.0f; - - float fMinBase = fCenter - (a_fRadius / 255.0f); - if (fMinBase < 0.0f) - { - fMinBase = 0.0f; - } - - float fMaxBase = fCenter + (a_fRadius / 255.0f); - if (fMaxBase > 1.0f) - { - fMaxBase = 1.0f; - } - - for (float fBase = fMinBase; fBase <= fMaxBase; fBase += (0.999999f / 255.0f)) - { - - float fRangeMultiplier = roundf(fAlphaRange / fTableEntryRange); - - float fMinMultiplier = fRangeMultiplier - a_fRadius; - if (fMinMultiplier < 1.0f) - { - fMinMultiplier = 1.0f; - } - else if (fMinMultiplier > 15.0f) - { - fMinMultiplier = 15.0f; - } - - float fMaxMultiplier = fRangeMultiplier + a_fRadius; - if (fMaxMultiplier < 1.0f) - { - fMaxMultiplier = 1.0f; - } - else if (fMaxMultiplier > 15.0f) - { - fMaxMultiplier = 15.0f; - } - - for (float fMultiplier = fMinMultiplier; fMultiplier <= fMaxMultiplier; fMultiplier += 1.0f) - { - // find best selector for each pixel - unsigned int auiBestSelectors[PIXELS]; - float afBestAlphaError[PIXELS]; - float afBestDecodedAlphas[PIXELS]; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - float fBestPixelAlphaError = FLT_MAX; - for (unsigned int uiSelector = 0; uiSelector < ALPHA_SELECTORS; uiSelector++) - { - float fDecodedAlpha = DecodePixelAlpha(fBase, fMultiplier, uiTableEntry, uiSelector); - - // border pixels (NAN) should have zero error - float fPixelDeltaAlpha = isnan(m_pafrgbaSource[uiPixel].fA) ? - 0.0f : - fDecodedAlpha - m_pafrgbaSource[uiPixel].fA; - - float fPixelAlphaError = fPixelDeltaAlpha * fPixelDeltaAlpha; - - if (fPixelAlphaError < fBestPixelAlphaError) - { - fBestPixelAlphaError = fPixelAlphaError; - auiBestSelectors[uiPixel] = uiSelector; - afBestAlphaError[uiPixel] = fBestPixelAlphaError; - afBestDecodedAlphas[uiPixel] = fDecodedAlpha; - } - } - } - - float fBlockError = 0.0f; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - fBlockError += afBestAlphaError[uiPixel]; - } - - if (fBlockError < m_fError) - { - m_fError = fBlockError; - - m_fBase = fBase; - m_fMultiplier = fMultiplier; - m_uiModifierTableIndex = uiTableEntry; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_auiAlphaSelectors[uiPixel] = auiBestSelectors[uiPixel]; - m_afDecodedAlphas[uiPixel] = afBestDecodedAlphas[uiPixel]; - } - } - } - } - - } - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RGBA8::SetEncodingBits(void) - { - - // set the RGB8 portion - Block4x4Encoding_RGB8::SetEncodingBits(); - - // set the A8 portion - { - m_pencodingbitsA8->data.base = (unsigned char)roundf(255.0f * m_fBase); - m_pencodingbitsA8->data.table = m_uiModifierTableIndex; - m_pencodingbitsA8->data.multiplier = (unsigned char)roundf(m_fMultiplier); - - unsigned long long int ulliSelectorBits = 0; - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - unsigned int uiShift = 45 - (3 * uiPixel); - ulliSelectorBits |= ((unsigned long long int)m_auiAlphaSelectors[uiPixel]) << uiShift; - } - - m_pencodingbitsA8->data.selectors0 = ulliSelectorBits >> 40; - m_pencodingbitsA8->data.selectors1 = ulliSelectorBits >> 32; - m_pencodingbitsA8->data.selectors2 = ulliSelectorBits >> 24; - m_pencodingbitsA8->data.selectors3 = ulliSelectorBits >> 16; - m_pencodingbitsA8->data.selectors4 = ulliSelectorBits >> 8; - m_pencodingbitsA8->data.selectors5 = ulliSelectorBits; - } - - } - - // #################################################################################################### - // Block4x4Encoding_RGBA8_Opaque - // #################################################################################################### - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RGBA8_Opaque::PerformIteration(float a_fEffort) - { - assert(!m_boolDone); - - if (m_uiEncodingIterations == 0) - { - m_fError = 0.0f; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afDecodedAlphas[uiPixel] = 1.0f; - } - } - - Block4x4Encoding_RGB8::PerformIteration(a_fEffort); - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RGBA8_Opaque::SetEncodingBits(void) - { - - // set the RGB8 portion - Block4x4Encoding_RGB8::SetEncodingBits(); - - // set the A8 portion - m_pencodingbitsA8->data.base = 255; - m_pencodingbitsA8->data.table = 15; - m_pencodingbitsA8->data.multiplier = 15; - m_pencodingbitsA8->data.selectors0 = 0xFF; - m_pencodingbitsA8->data.selectors1 = 0xFF; - m_pencodingbitsA8->data.selectors2 = 0xFF; - m_pencodingbitsA8->data.selectors3 = 0xFF; - m_pencodingbitsA8->data.selectors4 = 0xFF; - m_pencodingbitsA8->data.selectors5 = 0xFF; - - } - - // #################################################################################################### - // Block4x4Encoding_RGBA8_Transparent - // #################################################################################################### - - // ---------------------------------------------------------------------------------------------------- - // perform a single encoding iteration - // replace the encoding if a better encoding was found - // subsequent iterations generally take longer for each iteration - // set m_boolDone if encoding is perfect or encoding is finished based on a_fEffort - // - void Block4x4Encoding_RGBA8_Transparent::PerformIteration(float ) - { - assert(!m_boolDone); - assert(m_uiEncodingIterations == 0); - - m_mode = MODE_ETC1; - m_boolDiff = true; - m_boolFlip = false; - - for (unsigned int uiPixel = 0; uiPixel < PIXELS; uiPixel++) - { - m_afrgbaDecodedColors[uiPixel] = ColorFloatRGBA(); - m_afDecodedAlphas[uiPixel] = 0.0f; - } - - m_fError = 0.0f; - - m_boolDone = true; - m_uiEncodingIterations++; - - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits based on encoding state - // - void Block4x4Encoding_RGBA8_Transparent::SetEncodingBits(void) - { - - Block4x4Encoding_RGB8::SetEncodingBits(); - - // set the A8 portion - m_pencodingbitsA8->data.base = 0; - m_pencodingbitsA8->data.table = 0; - m_pencodingbitsA8->data.multiplier = 1; - m_pencodingbitsA8->data.selectors0 = 0; - m_pencodingbitsA8->data.selectors1 = 0; - m_pencodingbitsA8->data.selectors2 = 0; - m_pencodingbitsA8->data.selectors3 = 0; - m_pencodingbitsA8->data.selectors4 = 0; - m_pencodingbitsA8->data.selectors5 = 0; - - } - - // ---------------------------------------------------------------------------------------------------- - // -} diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.h b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.h deleted file mode 100644 index 5765d36b90..0000000000 --- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGBA8.h +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcBlock4x4Encoding_RGB8.h" - -namespace Etc -{ - class Block4x4EncodingBits_A8; - - // ################################################################################ - // Block4x4Encoding_RGBA8 - // RGBA8 if not completely opaque or transparent - // ################################################################################ - - class Block4x4Encoding_RGBA8 : public Block4x4Encoding_RGB8 - { - public: - - Block4x4Encoding_RGBA8(void); - virtual ~Block4x4Encoding_RGBA8(void); - - virtual void InitFromSource(Block4x4 *a_pblockParent, - ColorFloatRGBA *a_pafrgbaSource, - unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric); - - virtual void InitFromEncodingBits(Block4x4 *a_pblockParent, - unsigned char *a_paucEncodingBits, - ColorFloatRGBA *a_pafrgbaSource, - ErrorMetric a_errormetric); - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - protected: - - static const unsigned int MODIFIER_TABLE_ENTRYS = 16; - static const unsigned int ALPHA_SELECTOR_BITS = 3; - static const unsigned int ALPHA_SELECTORS = 1 << ALPHA_SELECTOR_BITS; - - static float s_aafModifierTable[MODIFIER_TABLE_ENTRYS][ALPHA_SELECTORS]; - - void CalculateA8(float a_fRadius); - - Block4x4EncodingBits_A8 *m_pencodingbitsA8; // A8 portion of Block4x4EncodingBits_RGBA8 - - float m_fBase; - float m_fMultiplier; - unsigned int m_uiModifierTableIndex; - unsigned int m_auiAlphaSelectors[PIXELS]; - - private: - - inline float DecodePixelAlpha(float a_fBase, float a_fMultiplier, - unsigned int a_uiTableIndex, unsigned int a_uiSelector) - { - float fPixelAlpha = a_fBase + - a_fMultiplier*s_aafModifierTable[a_uiTableIndex][a_uiSelector]; - if (fPixelAlpha < 0.0f) - { - fPixelAlpha = 0.0f; - } - else if (fPixelAlpha > 1.0f) - { - fPixelAlpha = 1.0f; - } - - return fPixelAlpha; - } - - }; - - // ################################################################################ - // Block4x4Encoding_RGBA8_Opaque - // RGBA8 if all pixels have alpha==1 - // ################################################################################ - - class Block4x4Encoding_RGBA8_Opaque : public Block4x4Encoding_RGBA8 - { - public: - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - }; - - // ################################################################################ - // Block4x4Encoding_RGBA8_Transparent - // RGBA8 if all pixels have alpha==0 - // ################################################################################ - - class Block4x4Encoding_RGBA8_Transparent : public Block4x4Encoding_RGBA8 - { - public: - - virtual void PerformIteration(float a_fEffort); - - virtual void SetEncodingBits(void); - - }; - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcColor.h b/thirdparty/etc2comp/EtcColor.h deleted file mode 100644 index 7ceae05b65..0000000000 --- a/thirdparty/etc2comp/EtcColor.h +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include <math.h> - -namespace Etc -{ - - inline float LogToLinear(float a_fLog) - { - static const float ALPHA = 0.055f; - static const float ONE_PLUS_ALPHA = 1.0f + ALPHA; - - if (a_fLog <= 0.04045f) - { - return a_fLog / 12.92f; - } - else - { - return powf((a_fLog + ALPHA) / ONE_PLUS_ALPHA, 2.4f); - } - } - - inline float LinearToLog(float &a_fLinear) - { - static const float ALPHA = 0.055f; - static const float ONE_PLUS_ALPHA = 1.0f + ALPHA; - - if (a_fLinear <= 0.0031308f) - { - return 12.92f * a_fLinear; - } - else - { - return ONE_PLUS_ALPHA * powf(a_fLinear, (1.0f/2.4f)) - ALPHA; - } - } - - class ColorR8G8B8A8 - { - public: - - unsigned char ucR; - unsigned char ucG; - unsigned char ucB; - unsigned char ucA; - - }; -} diff --git a/thirdparty/etc2comp/EtcColorFloatRGBA.h b/thirdparty/etc2comp/EtcColorFloatRGBA.h deleted file mode 100644 index f2ca2c1f71..0000000000 --- a/thirdparty/etc2comp/EtcColorFloatRGBA.h +++ /dev/null @@ -1,321 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcConfig.h" -#include "EtcColor.h" - -#include <math.h> - -namespace Etc -{ - - class ColorFloatRGBA - { - public: - - ColorFloatRGBA(void) - { - fR = fG = fB = fA = 0.0f; - } - - ColorFloatRGBA(float a_fR, float a_fG, float a_fB, float a_fA) - { - fR = a_fR; - fG = a_fG; - fB = a_fB; - fA = a_fA; - } - - inline ColorFloatRGBA operator+(ColorFloatRGBA& a_rfrgba) - { - ColorFloatRGBA frgba; - frgba.fR = fR + a_rfrgba.fR; - frgba.fG = fG + a_rfrgba.fG; - frgba.fB = fB + a_rfrgba.fB; - frgba.fA = fA + a_rfrgba.fA; - return frgba; - } - - inline ColorFloatRGBA operator+(float a_f) - { - ColorFloatRGBA frgba; - frgba.fR = fR + a_f; - frgba.fG = fG + a_f; - frgba.fB = fB + a_f; - frgba.fA = fA; - return frgba; - } - - inline ColorFloatRGBA operator-(float a_f) - { - ColorFloatRGBA frgba; - frgba.fR = fR - a_f; - frgba.fG = fG - a_f; - frgba.fB = fB - a_f; - frgba.fA = fA; - return frgba; - } - - inline ColorFloatRGBA operator-(ColorFloatRGBA& a_rfrgba) - { - ColorFloatRGBA frgba; - frgba.fR = fR - a_rfrgba.fR; - frgba.fG = fG - a_rfrgba.fG; - frgba.fB = fB - a_rfrgba.fB; - frgba.fA = fA - a_rfrgba.fA; - return frgba; - } - - inline ColorFloatRGBA operator*(float a_f) - { - ColorFloatRGBA frgba; - frgba.fR = fR * a_f; - frgba.fG = fG * a_f; - frgba.fB = fB * a_f; - frgba.fA = fA; - - return frgba; - } - - inline ColorFloatRGBA ScaleRGB(float a_f) - { - ColorFloatRGBA frgba; - frgba.fR = a_f * fR; - frgba.fG = a_f * fG; - frgba.fB = a_f * fB; - frgba.fA = fA; - - return frgba; - } - - inline ColorFloatRGBA RoundRGB(void) - { - ColorFloatRGBA frgba; - frgba.fR = roundf(fR); - frgba.fG = roundf(fG); - frgba.fB = roundf(fB); - - return frgba; - } - - inline ColorFloatRGBA ToLinear() - { - ColorFloatRGBA frgbaLinear; - frgbaLinear.fR = LogToLinear(fR); - frgbaLinear.fG = LogToLinear(fG); - frgbaLinear.fB = LogToLinear(fB); - frgbaLinear.fA = fA; - - return frgbaLinear; - } - - inline ColorFloatRGBA ToLog(void) - { - ColorFloatRGBA frgbaLog; - frgbaLog.fR = LinearToLog(fR); - frgbaLog.fG = LinearToLog(fG); - frgbaLog.fB = LinearToLog(fB); - frgbaLog.fA = fA; - - return frgbaLog; - } - - inline static ColorFloatRGBA ConvertFromRGBA8(unsigned char a_ucR, - unsigned char a_ucG, unsigned char a_ucB, unsigned char a_ucA) - { - ColorFloatRGBA frgba; - - frgba.fR = (float)a_ucR / 255.0f; - frgba.fG = (float)a_ucG / 255.0f; - frgba.fB = (float)a_ucB / 255.0f; - frgba.fA = (float)a_ucA / 255.0f; - - return frgba; - } - - inline static ColorFloatRGBA ConvertFromRGB4(unsigned char a_ucR4, - unsigned char a_ucG4, - unsigned char a_ucB4) - { - ColorFloatRGBA frgba; - - unsigned char ucR8 = (unsigned char)((a_ucR4 << 4) + a_ucR4); - unsigned char ucG8 = (unsigned char)((a_ucG4 << 4) + a_ucG4); - unsigned char ucB8 = (unsigned char)((a_ucB4 << 4) + a_ucB4); - - frgba.fR = (float)ucR8 / 255.0f; - frgba.fG = (float)ucG8 / 255.0f; - frgba.fB = (float)ucB8 / 255.0f; - frgba.fA = 1.0f; - - return frgba; - } - - inline static ColorFloatRGBA ConvertFromRGB5(unsigned char a_ucR5, - unsigned char a_ucG5, - unsigned char a_ucB5) - { - ColorFloatRGBA frgba; - - unsigned char ucR8 = (unsigned char)((a_ucR5 << 3) + (a_ucR5 >> 2)); - unsigned char ucG8 = (unsigned char)((a_ucG5 << 3) + (a_ucG5 >> 2)); - unsigned char ucB8 = (unsigned char)((a_ucB5 << 3) + (a_ucB5 >> 2)); - - frgba.fR = (float)ucR8 / 255.0f; - frgba.fG = (float)ucG8 / 255.0f; - frgba.fB = (float)ucB8 / 255.0f; - frgba.fA = 1.0f; - - return frgba; - } - - inline static ColorFloatRGBA ConvertFromR6G7B6(unsigned char a_ucR6, - unsigned char a_ucG7, - unsigned char a_ucB6) - { - ColorFloatRGBA frgba; - - unsigned char ucR8 = (unsigned char)((a_ucR6 << 2) + (a_ucR6 >> 4)); - unsigned char ucG8 = (unsigned char)((a_ucG7 << 1) + (a_ucG7 >> 6)); - unsigned char ucB8 = (unsigned char)((a_ucB6 << 2) + (a_ucB6 >> 4)); - - frgba.fR = (float)ucR8 / 255.0f; - frgba.fG = (float)ucG8 / 255.0f; - frgba.fB = (float)ucB8 / 255.0f; - frgba.fA = 1.0f; - - return frgba; - } - - // quantize to 4 bits, expand to 8 bits - inline ColorFloatRGBA QuantizeR4G4B4(void) const - { - ColorFloatRGBA frgba = *this; - - // quantize to 4 bits - frgba = frgba.ClampRGB().ScaleRGB(15.0f).RoundRGB(); - unsigned int uiR4 = (unsigned int)frgba.fR; - unsigned int uiG4 = (unsigned int)frgba.fG; - unsigned int uiB4 = (unsigned int)frgba.fB; - - // expand to 8 bits - frgba.fR = (float) ((uiR4 << 4) + uiR4); - frgba.fG = (float) ((uiG4 << 4) + uiG4); - frgba.fB = (float) ((uiB4 << 4) + uiB4); - - frgba = frgba.ScaleRGB(1.0f/255.0f); - - return frgba; - } - - // quantize to 5 bits, expand to 8 bits - inline ColorFloatRGBA QuantizeR5G5B5(void) const - { - ColorFloatRGBA frgba = *this; - - // quantize to 5 bits - frgba = frgba.ClampRGB().ScaleRGB(31.0f).RoundRGB(); - unsigned int uiR5 = (unsigned int)frgba.fR; - unsigned int uiG5 = (unsigned int)frgba.fG; - unsigned int uiB5 = (unsigned int)frgba.fB; - - // expand to 8 bits - frgba.fR = (float)((uiR5 << 3) + (uiR5 >> 2)); - frgba.fG = (float)((uiG5 << 3) + (uiG5 >> 2)); - frgba.fB = (float)((uiB5 << 3) + (uiB5 >> 2)); - - frgba = frgba.ScaleRGB(1.0f / 255.0f); - - return frgba; - } - - // quantize to 6/7/6 bits, expand to 8 bits - inline ColorFloatRGBA QuantizeR6G7B6(void) const - { - ColorFloatRGBA frgba = *this; - - // quantize to 6/7/6 bits - ColorFloatRGBA frgba6 = frgba.ClampRGB().ScaleRGB(63.0f).RoundRGB(); - ColorFloatRGBA frgba7 = frgba.ClampRGB().ScaleRGB(127.0f).RoundRGB(); - unsigned int uiR6 = (unsigned int)frgba6.fR; - unsigned int uiG7 = (unsigned int)frgba7.fG; - unsigned int uiB6 = (unsigned int)frgba6.fB; - - // expand to 8 bits - frgba.fR = (float)((uiR6 << 2) + (uiR6 >> 4)); - frgba.fG = (float)((uiG7 << 1) + (uiG7 >> 6)); - frgba.fB = (float)((uiB6 << 2) + (uiB6 >> 4)); - - frgba = frgba.ScaleRGB(1.0f / 255.0f); - - return frgba; - } - - inline ColorFloatRGBA ClampRGB(void) - { - ColorFloatRGBA frgba = *this; - if (frgba.fR < 0.0f) { frgba.fR = 0.0f; } - if (frgba.fR > 1.0f) { frgba.fR = 1.0f; } - if (frgba.fG < 0.0f) { frgba.fG = 0.0f; } - if (frgba.fG > 1.0f) { frgba.fG = 1.0f; } - if (frgba.fB < 0.0f) { frgba.fB = 0.0f; } - if (frgba.fB > 1.0f) { frgba.fB = 1.0f; } - - return frgba; - } - - inline ColorFloatRGBA ClampRGBA(void) - { - ColorFloatRGBA frgba = *this; - if (frgba.fR < 0.0f) { frgba.fR = 0.0f; } - if (frgba.fR > 1.0f) { frgba.fR = 1.0f; } - if (frgba.fG < 0.0f) { frgba.fG = 0.0f; } - if (frgba.fG > 1.0f) { frgba.fG = 1.0f; } - if (frgba.fB < 0.0f) { frgba.fB = 0.0f; } - if (frgba.fB > 1.0f) { frgba.fB = 1.0f; } - if (frgba.fA < 0.0f) { frgba.fA = 0.0f; } - if (frgba.fA > 1.0f) { frgba.fA = 1.0f; } - - return frgba; - } - - inline int IntRed(float a_fScale) - { - return (int)roundf(fR * a_fScale); - } - - inline int IntGreen(float a_fScale) - { - return (int)roundf(fG * a_fScale); - } - - inline int IntBlue(float a_fScale) - { - return (int)roundf(fB * a_fScale); - } - - inline int IntAlpha(float a_fScale) - { - return (int)roundf(fA * a_fScale); - } - - float fR, fG, fB, fA; - }; - -} - diff --git a/thirdparty/etc2comp/EtcConfig.h b/thirdparty/etc2comp/EtcConfig.h deleted file mode 100644 index 3bfe1d99a8..0000000000 --- a/thirdparty/etc2comp/EtcConfig.h +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#ifdef _WIN32 -#define ETC_WINDOWS (1) -#else -#define ETC_WINDOWS (0) -#endif - -#if __APPLE__ -#define ETC_OSX (1) -#else -#define ETC_OSX (0) -#endif - -#if __unix__ -#define ETC_UNIX (1) -#else -#define ETC_UNIX (0) -#endif - - -// short names for common types -#include <stdint.h> -typedef int8_t i8; -typedef int16_t i16; -typedef int32_t i32; -typedef int64_t i64; - -typedef uint8_t u8; -typedef uint16_t u16; -typedef uint32_t u32; -typedef uint64_t u64; - -typedef float f32; -typedef double f64; - -// Keep asserts enabled in release builds during development -#undef NDEBUG - -// 0=disable. stb_image can be used if you need to compress -//other image formats like jpg -#define USE_STB_IMAGE_LOAD 0 - -#if ETC_WINDOWS -#include <sdkddkver.h> -#define _CRT_SECURE_NO_WARNINGS (1) -#include <tchar.h> -#endif - -#include <stdio.h> - diff --git a/thirdparty/etc2comp/EtcDifferentialTrys.cpp b/thirdparty/etc2comp/EtcDifferentialTrys.cpp deleted file mode 100644 index ef4cd103d9..0000000000 --- a/thirdparty/etc2comp/EtcDifferentialTrys.cpp +++ /dev/null @@ -1,173 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcDifferentialTrys.cpp - -Gathers the results of the various encoding trys for both halves of a 4x4 block for Differential mode - -*/ - -#include "EtcConfig.h" -#include "EtcDifferentialTrys.h" - -#include <assert.h> - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // construct a list of trys (encoding attempts) - // - // a_frgbaColor1 is the basecolor for the first half - // a_frgbaColor2 is the basecolor for the second half - // a_pauiPixelMapping1 is the pixel order for the first half - // a_pauiPixelMapping2 is the pixel order for the second half - // a_uiRadius is the amount to vary the base colors - // - DifferentialTrys::DifferentialTrys(ColorFloatRGBA a_frgbaColor1, ColorFloatRGBA a_frgbaColor2, - const unsigned int *a_pauiPixelMapping1, - const unsigned int *a_pauiPixelMapping2, - unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2) - { - assert(a_uiRadius <= MAX_RADIUS); - - m_boolSeverelyBentColors = false; - - ColorFloatRGBA frgbaQuantizedColor1 = a_frgbaColor1.QuantizeR5G5B5(); - ColorFloatRGBA frgbaQuantizedColor2 = a_frgbaColor2.QuantizeR5G5B5(); - - // quantize base colors - // ensure that trys with a_uiRadius don't overflow - int iRed1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntRed(31.0f)+a_iGrayOffset1, a_uiRadius); - int iGreen1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntGreen(31.0f) + a_iGrayOffset1, a_uiRadius); - int iBlue1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntBlue(31.0f) + a_iGrayOffset1, a_uiRadius); - int iRed2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntRed(31.0f) + a_iGrayOffset2, a_uiRadius); - int iGreen2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntGreen(31.0f) + a_iGrayOffset2, a_uiRadius); - int iBlue2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntBlue(31.0f) + a_iGrayOffset2, a_uiRadius); - - int iDeltaRed = iRed2 - iRed1; - int iDeltaGreen = iGreen2 - iGreen1; - int iDeltaBlue = iBlue2 - iBlue1; - - // make sure components are within range - { - if (iDeltaRed > 3) - { - if (iDeltaRed > 7) - { - m_boolSeverelyBentColors = true; - } - - iRed1 += (iDeltaRed - 3) / 2; - iRed2 = iRed1 + 3; - iDeltaRed = 3; - } - else if (iDeltaRed < -4) - { - if (iDeltaRed < -8) - { - m_boolSeverelyBentColors = true; - } - - iRed1 += (iDeltaRed + 4) / 2; - iRed2 = iRed1 - 4; - iDeltaRed = -4; - } - assert(iRed1 >= (signed)(0 + a_uiRadius) && iRed1 <= (signed)(31 - a_uiRadius)); - assert(iRed2 >= (signed)(0 + a_uiRadius) && iRed2 <= (signed)(31 - a_uiRadius)); - assert(iDeltaRed >= -4 && iDeltaRed <= 3); - - if (iDeltaGreen > 3) - { - if (iDeltaGreen > 7) - { - m_boolSeverelyBentColors = true; - } - - iGreen1 += (iDeltaGreen - 3) / 2; - iGreen2 = iGreen1 + 3; - iDeltaGreen = 3; - } - else if (iDeltaGreen < -4) - { - if (iDeltaGreen < -8) - { - m_boolSeverelyBentColors = true; - } - - iGreen1 += (iDeltaGreen + 4) / 2; - iGreen2 = iGreen1 - 4; - iDeltaGreen = -4; - } - assert(iGreen1 >= (signed)(0 + a_uiRadius) && iGreen1 <= (signed)(31 - a_uiRadius)); - assert(iGreen2 >= (signed)(0 + a_uiRadius) && iGreen2 <= (signed)(31 - a_uiRadius)); - assert(iDeltaGreen >= -4 && iDeltaGreen <= 3); - - if (iDeltaBlue > 3) - { - if (iDeltaBlue > 7) - { - m_boolSeverelyBentColors = true; - } - - iBlue1 += (iDeltaBlue - 3) / 2; - iBlue2 = iBlue1 + 3; - iDeltaBlue = 3; - } - else if (iDeltaBlue < -4) - { - if (iDeltaBlue < -8) - { - m_boolSeverelyBentColors = true; - } - - iBlue1 += (iDeltaBlue + 4) / 2; - iBlue2 = iBlue1 - 4; - iDeltaBlue = -4; - } - assert(iBlue1 >= (signed)(0+a_uiRadius) && iBlue1 <= (signed)(31 - a_uiRadius)); - assert(iBlue2 >= (signed)(0 + a_uiRadius) && iBlue2 <= (signed)(31 - a_uiRadius)); - assert(iDeltaBlue >= -4 && iDeltaBlue <= 3); - } - - m_half1.Init(iRed1, iGreen1, iBlue1, a_pauiPixelMapping1, a_uiRadius); - m_half2.Init(iRed2, iGreen2, iBlue2, a_pauiPixelMapping2, a_uiRadius); - - } - - // ---------------------------------------------------------------------------------------------------- - // - void DifferentialTrys::Half::Init(int a_iRed, int a_iGreen, int a_iBlue, - const unsigned int *a_pauiPixelMapping, unsigned int a_uiRadius) - { - - m_iRed = a_iRed; - m_iGreen = a_iGreen; - m_iBlue = a_iBlue; - - m_pauiPixelMapping = a_pauiPixelMapping; - m_uiRadius = a_uiRadius; - - m_uiTrys = 0; - - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcDifferentialTrys.h b/thirdparty/etc2comp/EtcDifferentialTrys.h deleted file mode 100644 index 71860908ff..0000000000 --- a/thirdparty/etc2comp/EtcDifferentialTrys.h +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcColorFloatRGBA.h" - -namespace Etc -{ - - class DifferentialTrys - { - public: - - static const unsigned int MAX_RADIUS = 2; - - DifferentialTrys(ColorFloatRGBA a_frgbaColor1, - ColorFloatRGBA a_frgbaColor2, - const unsigned int *a_pauiPixelMapping1, - const unsigned int *a_pauiPixelMapping2, - unsigned int a_uiRadius, - int a_iGrayOffset1, int a_iGrayOffset2); - - inline static int MoveAwayFromEdge(int a_i, int a_iDistance) - { - if (a_i < (0+ a_iDistance)) - { - return (0 + a_iDistance); - } - else if (a_i > (31- a_iDistance)) - { - return (31 - a_iDistance); - } - - return a_i; - } - - class Try - { - public : - static const unsigned int SELECTORS = 8; // per half - - int m_iRed; - int m_iGreen; - int m_iBlue; - unsigned int m_uiCW; - unsigned int m_auiSelectors[SELECTORS]; - float m_fError; - }; - - class Half - { - public: - - static const unsigned int MAX_TRYS = 125; - - void Init(int a_iRed, int a_iGreen, int a_iBlue, - const unsigned int *a_pauiPixelMapping, - unsigned int a_uiRadius); - - // center of trys - int m_iRed; - int m_iGreen; - int m_iBlue; - - const unsigned int *m_pauiPixelMapping; - unsigned int m_uiRadius; - - unsigned int m_uiTrys; - Try m_atry[MAX_TRYS]; - - Try *m_ptryBest; - }; - - Half m_half1; - Half m_half2; - - bool m_boolSeverelyBentColors; - }; - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcErrorMetric.h b/thirdparty/etc2comp/EtcErrorMetric.h deleted file mode 100644 index df4dcab4fb..0000000000 --- a/thirdparty/etc2comp/EtcErrorMetric.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -namespace Etc -{ - - enum ErrorMetric - { - RGBA, - RGBX, - REC709, - NUMERIC, - NORMALXYZ, - // - ERROR_METRICS, - // - BT709 = REC709 - }; - - inline const char *ErrorMetricToString(ErrorMetric errorMetric) - { - switch (errorMetric) - { - case RGBA: - return "RGBA"; - case RGBX: - return "RGBX"; - case REC709: - return "REC709"; - case NUMERIC: - return "NUMERIC"; - case NORMALXYZ: - return "NORMALXYZ"; - case ERROR_METRICS: - default: - return "UNKNOWN"; - } - } -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcFile.cpp b/thirdparty/etc2comp/EtcFile.cpp deleted file mode 100644 index 831a3aac45..0000000000 --- a/thirdparty/etc2comp/EtcFile.cpp +++ /dev/null @@ -1,390 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifdef _WIN32 -#define _CRT_SECURE_NO_WARNINGS (1) -#endif - -#include "EtcConfig.h" - - -#include "EtcFile.h" - -#include "EtcFileHeader.h" -#include "EtcColor.h" -#include "Etc.h" -#include "EtcBlock4x4EncodingBits.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <stdlib.h> - -using namespace Etc; - -// ---------------------------------------------------------------------------------------------------- -// -File::File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat, - unsigned char *a_paucEncodingBits, unsigned int a_uiEncodingBitsBytes, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight, - unsigned int a_uiExtendedWidth, unsigned int a_uiExtendedHeight) -{ - if (a_pstrFilename == nullptr) - { - m_pstrFilename = const_cast<char *>(""); - } - else - { - m_pstrFilename = new char[strlen(a_pstrFilename) + 1]; - strcpy(m_pstrFilename, a_pstrFilename); - } - - m_fileformat = a_fileformat; - if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION) - { - // ***** TODO: add this later ***** - m_fileformat = Format::KTX; - } - - m_imageformat = a_imageformat; - - m_uiNumMipmaps = 1; - m_pMipmapImages = new RawImage[m_uiNumMipmaps]; - m_pMipmapImages[0].paucEncodingBits = std::shared_ptr<unsigned char>(a_paucEncodingBits, [](unsigned char *p) { delete[] p; } ); - m_pMipmapImages[0].uiEncodingBitsBytes = a_uiEncodingBitsBytes; - m_pMipmapImages[0].uiExtendedWidth = a_uiExtendedWidth; - m_pMipmapImages[0].uiExtendedHeight = a_uiExtendedHeight; - - m_uiSourceWidth = a_uiSourceWidth; - m_uiSourceHeight = a_uiSourceHeight; - - switch (m_fileformat) - { - case Format::PKM: - m_pheader = new FileHeader_Pkm(this); - break; - - case Format::KTX: - m_pheader = new FileHeader_Ktx(this); - break; - - default: - assert(0); - break; - } - -} - -// ---------------------------------------------------------------------------------------------------- -// -File::File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat, - unsigned int a_uiNumMipmaps, RawImage *a_pMipmapImages, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight) -{ - if (a_pstrFilename == nullptr) - { - m_pstrFilename = const_cast<char *>(""); - } - else - { - m_pstrFilename = new char[strlen(a_pstrFilename) + 1]; - strcpy(m_pstrFilename, a_pstrFilename); - } - - m_fileformat = a_fileformat; - if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION) - { - // ***** TODO: add this later ***** - m_fileformat = Format::KTX; - } - - m_imageformat = a_imageformat; - - m_uiNumMipmaps = a_uiNumMipmaps; - m_pMipmapImages = new RawImage[m_uiNumMipmaps]; - - for(unsigned int mip = 0; mip < m_uiNumMipmaps; mip++) - { - m_pMipmapImages[mip] = a_pMipmapImages[mip]; - } - - m_uiSourceWidth = a_uiSourceWidth; - m_uiSourceHeight = a_uiSourceHeight; - - switch (m_fileformat) - { - case Format::PKM: - m_pheader = new FileHeader_Pkm(this); - break; - - case Format::KTX: - m_pheader = new FileHeader_Ktx(this); - break; - - default: - assert(0); - break; - } - -} - -// ---------------------------------------------------------------------------------------------------- -// -File::File(const char *a_pstrFilename, Format a_fileformat) -{ - if (a_pstrFilename == nullptr) - { - return; - } - else - { - m_pstrFilename = new char[strlen(a_pstrFilename) + 1]; - strcpy(m_pstrFilename, a_pstrFilename); - } - - m_fileformat = a_fileformat; - if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION) - { - // ***** TODO: add this later ***** - m_fileformat = Format::KTX; - } - - FILE *pfile = fopen(m_pstrFilename, "rb"); - if (pfile == nullptr) - { - printf("ERROR: Couldn't open %s", m_pstrFilename); - exit(1); - } - fseek(pfile, 0, SEEK_END); - unsigned int fileSize = ftell(pfile); - fseek(pfile, 0, SEEK_SET); - size_t szResult; - - m_pheader = new FileHeader_Ktx(this); - szResult = fread( ((FileHeader_Ktx*)m_pheader)->GetData(), 1, sizeof(FileHeader_Ktx::Data), pfile); - assert(szResult > 0); - - m_uiNumMipmaps = 1; - m_pMipmapImages = new RawImage[m_uiNumMipmaps]; - - if (((FileHeader_Ktx*)m_pheader)->GetData()->m_u32BytesOfKeyValueData > 0) - fseek(pfile, ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32BytesOfKeyValueData, SEEK_CUR); - szResult = fread(&m_pMipmapImages->uiEncodingBitsBytes, 1, sizeof(unsigned int), pfile); - assert(szResult > 0); - - m_pMipmapImages->paucEncodingBits = std::shared_ptr<unsigned char>(new unsigned char[m_pMipmapImages->uiEncodingBitsBytes], [](unsigned char *p) { delete[] p; } ); - assert(ftell(pfile) + m_pMipmapImages->uiEncodingBitsBytes <= fileSize); - szResult = fread(m_pMipmapImages->paucEncodingBits.get(), 1, m_pMipmapImages->uiEncodingBitsBytes, pfile); - assert(szResult == m_pMipmapImages->uiEncodingBitsBytes); - - uint32_t uiInternalFormat = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32GlInternalFormat; - uint32_t uiBaseInternalFormat = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32GlBaseInternalFormat; - - if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC1_RGB8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC1_RGB8) - { - m_imageformat = Image::Format::ETC1; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGB8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGB8) - { - m_imageformat = Image::Format::RGB8; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGB8A1 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGB8A1) - { - m_imageformat = Image::Format::RGB8A1; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGBA8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGBA8) - { - m_imageformat = Image::Format::RGBA8; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_R11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_R11) - { - m_imageformat = Image::Format::R11; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_SIGNED_R11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_R11) - { - m_imageformat = Image::Format::SIGNED_R11; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RG11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RG11) - { - m_imageformat = Image::Format::RG11; - } - else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_SIGNED_RG11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RG11) - { - m_imageformat = Image::Format::SIGNED_RG11; - } - else - { - m_imageformat = Image::Format::UNKNOWN; - } - - m_uiSourceWidth = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32PixelWidth; - m_uiSourceHeight = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32PixelHeight; - m_pMipmapImages->uiExtendedWidth = Image::CalcExtendedDimension((unsigned short)m_uiSourceWidth); - m_pMipmapImages->uiExtendedHeight = Image::CalcExtendedDimension((unsigned short)m_uiSourceHeight); - - unsigned int uiBlocks = m_pMipmapImages->uiExtendedWidth * m_pMipmapImages->uiExtendedHeight / 16; - Block4x4EncodingBits::Format encodingbitsformat = Image::DetermineEncodingBitsFormat(m_imageformat); - unsigned int expectedbytes = uiBlocks * Block4x4EncodingBits::GetBytesPerBlock(encodingbitsformat); - assert(expectedbytes == m_pMipmapImages->uiEncodingBitsBytes); - - fclose(pfile); -} - -File::~File() -{ - if (m_pMipmapImages != nullptr) - { - delete [] m_pMipmapImages; - } - - if(m_pstrFilename != nullptr) - { - delete[] m_pstrFilename; - m_pstrFilename = nullptr; - } - if (m_pheader != nullptr) - { - delete m_pheader; - m_pheader = nullptr; - } -} - -void File::UseSingleBlock(int a_iPixelX, int a_iPixelY) -{ - if (a_iPixelX <= -1 || a_iPixelY <= -1) - return; - if (a_iPixelX >(int) m_uiSourceWidth) - { - //if we are using a ktx thats the size of a single block or less - //then make sure we use the 4x4 image as the single block - if (m_uiSourceWidth <= 4) - { - a_iPixelX = 0; - } - else - { - printf("blockAtHV: H coordinate out of range, capped to image width\n"); - a_iPixelX = m_uiSourceWidth - 1; - } - } - if (a_iPixelY >(int) m_uiSourceHeight) - { - //if we are using a ktx thats the size of a single block or less - //then make sure we use the 4x4 image as the single block - if (m_uiSourceHeight <= 4) - { - a_iPixelY= 0; - } - else - { - printf("blockAtHV: V coordinate out of range, capped to image height\n"); - a_iPixelY = m_uiSourceHeight - 1; - } - } - - unsigned int origWidth = m_uiSourceWidth; - unsigned int origHeight = m_uiSourceHeight; - - m_uiSourceWidth = 4; - m_uiSourceHeight = 4; - - Block4x4EncodingBits::Format encodingbitsformat = Image::DetermineEncodingBitsFormat(m_imageformat); - unsigned int uiEncodingBitsBytesPerBlock = Block4x4EncodingBits::GetBytesPerBlock(encodingbitsformat); - - int numMipmaps = 1; - RawImage* pMipmapImages = new RawImage[numMipmaps]; - pMipmapImages[0].uiExtendedWidth = Image::CalcExtendedDimension((unsigned short)m_uiSourceWidth); - pMipmapImages[0].uiExtendedHeight = Image::CalcExtendedDimension((unsigned short)m_uiSourceHeight); - pMipmapImages[0].uiEncodingBitsBytes = 0; - pMipmapImages[0].paucEncodingBits = std::shared_ptr<unsigned char>(new unsigned char[uiEncodingBitsBytesPerBlock], [](unsigned char *p) { delete[] p; }); - - //block position in pixels - // remove the bottom 2 bits to get the block coordinates - unsigned int iBlockPosX = (a_iPixelX & 0xFFFFFFFC); - unsigned int iBlockPosY = (a_iPixelY & 0xFFFFFFFC); - - int numXBlocks = (origWidth / 4); - int numYBlocks = (origHeight / 4); - - - // block location - //int iBlockX = (a_iPixelX % 4) == 0 ? a_iPixelX / 4.0f : (a_iPixelX / 4) + 1; - //int iBlockY = (a_iPixelY % 4) == 0 ? a_iPixelY / 4.0f : (a_iPixelY / 4) + 1; - //m_paucEncodingBits += ((iBlockY * numXBlocks) + iBlockX) * uiEncodingBitsBytesPerBlock; - - - unsigned int num = numXBlocks*numYBlocks; - unsigned int uiH = 0, uiV = 0; - unsigned char* pEncodingBits = m_pMipmapImages[0].paucEncodingBits.get(); - for (unsigned int uiBlock = 0; uiBlock < num; uiBlock++) - { - if (uiH == iBlockPosX && uiV == iBlockPosY) - { - memcpy(pMipmapImages[0].paucEncodingBits.get(),pEncodingBits, uiEncodingBitsBytesPerBlock); - break; - } - pEncodingBits += uiEncodingBitsBytesPerBlock; - uiH += 4; - - if (uiH >= origWidth) - { - uiH = 0; - uiV += 4; - } - } - - delete [] m_pMipmapImages; - m_pMipmapImages = pMipmapImages; -} -// ---------------------------------------------------------------------------------------------------- -// -void File::Write() -{ - - FILE *pfile = fopen(m_pstrFilename, "wb"); - if (pfile == nullptr) - { - printf("Error: couldn't open Etc file (%s)\n", m_pstrFilename); - exit(1); - } - - m_pheader->Write(pfile); - - for(unsigned int mip = 0; mip < m_uiNumMipmaps; mip++) - { - if(m_fileformat == Format::KTX) - { - // Write u32 image size - uint32_t u32ImageSize = m_pMipmapImages[mip].uiEncodingBitsBytes; - uint32_t szBytesWritten = fwrite(&u32ImageSize, 1, sizeof(u32ImageSize), pfile); - assert(szBytesWritten == sizeof(u32ImageSize)); - } - - unsigned int iResult = (int)fwrite(m_pMipmapImages[mip].paucEncodingBits.get(), 1, m_pMipmapImages[mip].uiEncodingBitsBytes, pfile); - if (iResult != m_pMipmapImages[mip].uiEncodingBitsBytes) - { - printf("Error: couldn't write Etc file (%s)\n", m_pstrFilename); - exit(1); - } - } - - fclose(pfile); - -} - -// ---------------------------------------------------------------------------------------------------- -// - diff --git a/thirdparty/etc2comp/EtcFile.h b/thirdparty/etc2comp/EtcFile.h deleted file mode 100644 index 69bf3b2d3a..0000000000 --- a/thirdparty/etc2comp/EtcFile.h +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcColorFloatRGBA.h" -#include "EtcImage.h" -#include "Etc.h" - -namespace Etc -{ - class FileHeader; - class SourceImage; - - class File - { - public: - - enum class Format - { - INFER_FROM_FILE_EXTENSION, - PKM, - KTX, - }; - - File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat, - unsigned char *a_paucEncodingBits, unsigned int a_uiEncodingBitsBytes, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight, - unsigned int a_uiExtendedWidth, unsigned int a_uiExtendedHeight); - - File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat, - unsigned int a_uiNumMipmaps, RawImage *pMipmapImages, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight ); - - File(const char *a_pstrFilename, Format a_fileformat); - ~File(); - const char *GetFilename(void) { return m_pstrFilename; } - - void Read(const char *a_pstrFilename); - void Write(void); - - inline unsigned int GetSourceWidth(void) - { - return m_uiSourceWidth; - } - - inline unsigned int GetSourceHeight(void) - { - return m_uiSourceHeight; - } - - inline unsigned int GetExtendedWidth(unsigned int mipmapIndex = 0) - { - if (mipmapIndex < m_uiNumMipmaps) - { - return m_pMipmapImages[mipmapIndex].uiExtendedWidth; - } - else - { - return 0; - } - } - - inline unsigned int GetExtendedHeight(unsigned int mipmapIndex = 0) - { - if (mipmapIndex < m_uiNumMipmaps) - { - return m_pMipmapImages[mipmapIndex].uiExtendedHeight; - } - else - { - return 0; - } - } - - inline Image::Format GetImageFormat() - { - return m_imageformat; - } - - inline unsigned int GetEncodingBitsBytes(unsigned int mipmapIndex = 0) - { - if (mipmapIndex < m_uiNumMipmaps) - { - return m_pMipmapImages[mipmapIndex].uiEncodingBitsBytes; - } - else - { - return 0; - } - } - - inline unsigned char* GetEncodingBits(unsigned int mipmapIndex = 0) - { - if( mipmapIndex < m_uiNumMipmaps) - { - return m_pMipmapImages[mipmapIndex].paucEncodingBits.get(); - } - else - { - return nullptr; - } - } - - inline unsigned int GetNumMipmaps() - { - return m_uiNumMipmaps; - } - - void UseSingleBlock(int a_iPixelX = -1, int a_iPixelY = -1); - private: - - char *m_pstrFilename; // includes directory path and file extension - Format m_fileformat; - Image::Format m_imageformat; - FileHeader *m_pheader; - unsigned int m_uiNumMipmaps; - RawImage* m_pMipmapImages; - unsigned int m_uiSourceWidth; - unsigned int m_uiSourceHeight; - }; - -} diff --git a/thirdparty/etc2comp/EtcFileHeader.cpp b/thirdparty/etc2comp/EtcFileHeader.cpp deleted file mode 100644 index f02fcab011..0000000000 --- a/thirdparty/etc2comp/EtcFileHeader.cpp +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "EtcFileHeader.h" - -#include "EtcBlock4x4EncodingBits.h" - -#include <assert.h> - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // - FileHeader_Pkm::FileHeader_Pkm(File *a_pfile) - { - m_pfile = a_pfile; - - static const char s_acMagicNumberData[4] = { 'P', 'K', 'M', ' ' }; - static const char s_acVersionData[2] = { '1', '0' }; - - for (unsigned int ui = 0; ui < sizeof(s_acMagicNumberData); ui++) - { - m_data.m_acMagicNumber[ui] = s_acMagicNumberData[ui]; - } - - for (unsigned int ui = 0; ui < sizeof(s_acVersionData); ui++) - { - m_data.m_acVersion[ui] = s_acVersionData[ui]; - } - - m_data.m_ucDataType_msb = 0; // ETC1_RGB_NO_MIPMAPS - m_data.m_ucDataType_lsb = 0; - - m_data.m_ucOriginalWidth_msb = (unsigned char)(m_pfile->GetSourceWidth() >> 8); - m_data.m_ucOriginalWidth_lsb = m_pfile->GetSourceWidth() & 0xFF; - m_data.m_ucOriginalHeight_msb = (unsigned char)(m_pfile->GetSourceHeight() >> 8); - m_data.m_ucOriginalHeight_lsb = m_pfile->GetSourceHeight() & 0xFF; - - m_data.m_ucExtendedWidth_msb = (unsigned char)(m_pfile->GetExtendedWidth() >> 8); - m_data.m_ucExtendedWidth_lsb = m_pfile->GetExtendedWidth() & 0xFF; - m_data.m_ucExtendedHeight_msb = (unsigned char)(m_pfile->GetExtendedHeight() >> 8); - m_data.m_ucExtendedHeight_lsb = m_pfile->GetExtendedHeight() & 0xFF; - - } - - // ---------------------------------------------------------------------------------------------------- - // - void FileHeader_Pkm::Write(FILE *a_pfile) - { - - fwrite(&m_data, sizeof(Data), 1, a_pfile); - - } - - // ---------------------------------------------------------------------------------------------------- - // - FileHeader_Ktx::FileHeader_Ktx(File *a_pfile) - { - m_pfile = a_pfile; - - static const uint8_t s_au8Itentfier[12] = - { - 0xAB, 0x4B, 0x54, 0x58, // first four bytes of Byte[12] identifier - 0x20, 0x31, 0x31, 0xBB, // next four bytes of Byte[12] identifier - 0x0D, 0x0A, 0x1A, 0x0A // final four bytes of Byte[12] identifier - }; - - for (unsigned int ui = 0; ui < sizeof(s_au8Itentfier); ui++) - { - m_data.m_au8Identifier[ui] = s_au8Itentfier[ui]; - } - - m_data.m_u32Endianness = 0x04030201; - m_data.m_u32GlType = 0; - m_data.m_u32GlTypeSize = 1; - m_data.m_u32GlFormat = 0; - - switch (m_pfile->GetImageFormat()) - { - case Image::Format::RGB8: - case Image::Format::SRGB8: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGB8; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGB8; - break; - - case Image::Format::RGBA8: - case Image::Format::SRGBA8: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGBA8; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGBA8; - break; - - case Image::Format::RGB8A1: - case Image::Format::SRGB8A1: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGB8A1; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGB8A1; - break; - - case Image::Format::R11: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_R11; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_R11; - break; - - case Image::Format::SIGNED_R11: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_SIGNED_R11; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_R11; - break; - - case Image::Format::RG11: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RG11; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RG11; - break; - - case Image::Format::SIGNED_RG11: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_SIGNED_RG11; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RG11; - break; - - default: - m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC1_RGB8; - m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC1_RGB8; - break; - } - - m_data.m_u32PixelWidth = 0; - m_data.m_u32PixelHeight = 0; - m_data.m_u32PixelDepth = 0; - m_data.m_u32NumberOfArrayElements = 0; - m_data.m_u32NumberOfFaces = 0; - m_data.m_u32BytesOfKeyValueData = 0; - - m_pkeyvaluepair = nullptr; - - m_u32Images = 0; - m_u32KeyValuePairs = 0; - - m_data.m_u32PixelWidth = m_pfile->GetSourceWidth(); - m_data.m_u32PixelHeight = m_pfile->GetSourceHeight(); - m_data.m_u32PixelDepth = 0; - m_data.m_u32NumberOfArrayElements = 0; - m_data.m_u32NumberOfFaces = 1; - m_data.m_u32NumberOfMipmapLevels = m_pfile->GetNumMipmaps(); - - } - - // ---------------------------------------------------------------------------------------------------- - // - void FileHeader_Ktx::Write(FILE *a_pfile) - { - size_t szBytesWritten; - - // Write header - szBytesWritten = fwrite(&m_data, 1, sizeof(Data), a_pfile); - assert(szBytesWritten == sizeof(Data)); - - // Write KeyAndValuePairs - if (m_u32KeyValuePairs) - { - fwrite(m_pkeyvaluepair, m_pkeyvaluepair->u32KeyAndValueByteSize, 1, a_pfile); - } - } - - // ---------------------------------------------------------------------------------------------------- - // - FileHeader_Ktx::Data *FileHeader_Ktx::GetData() - { - return &m_data; - } - - // ---------------------------------------------------------------------------------------------------- - // -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcFileHeader.h b/thirdparty/etc2comp/EtcFileHeader.h deleted file mode 100644 index 55a9cb5d9d..0000000000 --- a/thirdparty/etc2comp/EtcFileHeader.h +++ /dev/null @@ -1,146 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcFile.h" -#include <stdio.h> -#include <inttypes.h> - -namespace Etc -{ - - class Image; - - class FileHeader - { - public: - - virtual void Write(FILE *a_pfile) = 0; - File GetFile(); - virtual ~FileHeader(void) {} - protected: - - File *m_pfile; - }; - - // ---------------------------------------------------------------------------------------------------- - // - class FileHeader_Pkm : public FileHeader - { - public: - - FileHeader_Pkm(File *a_pfile); - - virtual void Write(FILE *a_pfile); - virtual ~FileHeader_Pkm(void) {} - private: - - typedef struct - { - char m_acMagicNumber[4]; - char m_acVersion[2]; - unsigned char m_ucDataType_msb; // e.g. ETC1_RGB_NO_MIPMAPS - unsigned char m_ucDataType_lsb; - unsigned char m_ucExtendedWidth_msb; // padded to 4x4 blocks - unsigned char m_ucExtendedWidth_lsb; - unsigned char m_ucExtendedHeight_msb; // padded to 4x4 blocks - unsigned char m_ucExtendedHeight_lsb; - unsigned char m_ucOriginalWidth_msb; - unsigned char m_ucOriginalWidth_lsb; - unsigned char m_ucOriginalHeight_msb; - unsigned char m_ucOriginalHeight_lsb; - } Data; - - Data m_data; - }; - - // ---------------------------------------------------------------------------------------------------- - // - class FileHeader_Ktx : public FileHeader - { - public: - - typedef struct - { - uint32_t u32KeyAndValueByteSize; - } KeyValuePair; - - typedef struct - { - uint8_t m_au8Identifier[12]; - uint32_t m_u32Endianness; - uint32_t m_u32GlType; - uint32_t m_u32GlTypeSize; - uint32_t m_u32GlFormat; - uint32_t m_u32GlInternalFormat; - uint32_t m_u32GlBaseInternalFormat; - uint32_t m_u32PixelWidth; - uint32_t m_u32PixelHeight; - uint32_t m_u32PixelDepth; - uint32_t m_u32NumberOfArrayElements; - uint32_t m_u32NumberOfFaces; - uint32_t m_u32NumberOfMipmapLevels; - uint32_t m_u32BytesOfKeyValueData; - } Data; - - enum class InternalFormat - { - ETC1_RGB8 = 0x8D64, - ETC1_ALPHA8 = ETC1_RGB8, - // - ETC2_R11 = 0x9270, - ETC2_SIGNED_R11 = 0x9271, - ETC2_RG11 = 0x9272, - ETC2_SIGNED_RG11 = 0x9273, - ETC2_RGB8 = 0x9274, - ETC2_SRGB8 = 0x9275, - ETC2_RGB8A1 = 0x9276, - ETC2_SRGB8_PUNCHTHROUGH_ALPHA1 = 0x9277, - ETC2_RGBA8 = 0x9278 - }; - - enum class BaseInternalFormat - { - ETC2_R11 = 0x1903, - ETC2_RG11 = 0x8227, - ETC1_RGB8 = 0x1907, - ETC1_ALPHA8 = ETC1_RGB8, - // - ETC2_RGB8 = 0x1907, - ETC2_RGB8A1 = 0x1908, - ETC2_RGBA8 = 0x1908, - }; - - FileHeader_Ktx(File *a_pfile); - - virtual void Write(FILE *a_pfile); - virtual ~FileHeader_Ktx(void) {} - - void AddKeyAndValue(KeyValuePair *a_pkeyvaluepair); - - Data* GetData(); - - private: - - Data m_data; - KeyValuePair *m_pkeyvaluepair; - - uint32_t m_u32Images; - uint32_t m_u32KeyValuePairs; - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcFilter.cpp b/thirdparty/etc2comp/EtcFilter.cpp deleted file mode 100644 index 1ec8acdf3f..0000000000 --- a/thirdparty/etc2comp/EtcFilter.cpp +++ /dev/null @@ -1,404 +0,0 @@ -#include <stdlib.h> -#include <math.h> -#include "EtcFilter.h" - - -namespace Etc -{ - -static const double PiConst = 3.14159265358979323846; - -inline double sinc(double x) -{ - if ( x == 0.0 ) - { - return 1.0; - } - - return sin(PiConst * x) / (PiConst * x); -} - -//inline float sincf( float x ) -//{ -// x *= F_PI; -// if (x < 0.01f && x > -0.01f) -// { -// return 1.0f + x*x*(-1.0f/6.0f + x*x*1.0f/120.0f); -// } -// -// return sinf(x)/x; -//} -// -//double bessel0(double x) -//{ -// const double EPSILON_RATIO = 1E-16; -// double xh, sum, pow, ds; -// int k; -// -// xh = 0.5 * x; -// sum = 1.0; -// pow = 1.0; -// k = 0; -// ds = 1.0; -// while (ds > sum * EPSILON_RATIO) -// { -// ++k; -// pow = pow * (xh / k); -// ds = pow * pow; -// sum = sum + ds; -// } -// -// return sum; -//} - -//**-------------------------------------------------------------------------- -//** Name: kaiser(double alpha, double half_width, double x) -//** Returns: -//** Description: Alpha controls shape of filter. We are using 4. -//**-------------------------------------------------------------------------- -//inline double kaiser(double alpha, double half_width, double x) -//{ -// double ratio = (x / half_width); -// return bessel0(alpha * sqrt(1 - ratio * ratio)) / bessel0(alpha); -//} -// -//float Filter_Lanczos4Sinc(float x) -//{ -// if (x <= -4.0f || x >= 4.0f) // half-width of 4 -// { -// return 0.0; -// } -// -// return sinc(0.875f * x) * sinc(0.25f * x); -//} -// -//double Filter_Kaiser4( double t ) -//{ -// return kaiser( 4.0, 3.0, t); -//} -// -//double Filter_KaiserOptimal( double t ) -//{ -// return kaiser( 8.93, 3.0f, t); -//} - -double FilterLanczos3( double t ) -{ - if ( t <= -3.0 || t >= 3.0 ) - { - return 0.0; - } - - return sinc( t ) * sinc( t / 3.0 ); -} - -double FilterBox( double t ) -{ - return ( t > -0.5 && t < 0.5) ? 1.0 : 0.0; -} - -double FilterLinear( double t ) -{ - if (t < 0.0) t = -t; - - return (t < 1.0) ? (1.0 - t) : 0.0; -} - - -//**-------------------------------------------------------------------------- -//** Name: CalcContributions( int srcSize, -//** int destSize, -//** double filterSize, -//** bool wrap, -//** double (*FilterProc)(double), -//** FilterWeights contrib[] ) -//** Returns: void -//** Description: -//**-------------------------------------------------------------------------- -void CalcContributions( int srcSize, int destSize, double filterSize, bool wrap, double (*FilterProc)(double), FilterWeights contrib[] ) -{ - double scale; - double filterScale; - double center; - double totalWeight; - double weight; - int iRight; - int iLeft; - int iDest; - - scale = (double)destSize / srcSize; - if ( scale < 1.0 ) - { - filterSize = filterSize / scale; - filterScale = scale; - } - else - { - filterScale = 1.0; - } - - if ( filterSize > (double)MaxFilterSize ) - { - filterSize = (double)MaxFilterSize; - } - - for ( iDest = 0; iDest < destSize; ++iDest ) - { - center = (double)iDest / scale; - - iLeft = (int)ceil(center - filterSize); - iRight = (int)floor(center + filterSize); - - if ( !wrap ) - { - if ( iLeft < 0 ) - { - iLeft = 0; - } - - if ( iRight >= srcSize ) - { - iRight = srcSize - 1; - } - } - - int numWeights = iRight - iLeft + 1; - - contrib[iDest].first = iLeft; - contrib[iDest].numWeights = numWeights; - - totalWeight = 0; - double t = ((double)iLeft - center) * filterScale; - for (int i = 0; i < numWeights; i++) - { - weight = (*FilterProc)(t) * filterScale; - totalWeight += weight; - contrib[iDest].weight[i] = weight; - t += filterScale; - } - - //**-------------------------------------------------------- - //** Normalize weights by dividing by the sum of the weights - //**-------------------------------------------------------- - if ( totalWeight > 0.0 ) - { - for ( int i = 0; i < numWeights; i++) - { - contrib[iDest].weight[i] /= totalWeight; - } - } - } -} - -//**------------------------------------------------------------------------- -//** Name: Filter_TwoPass( RGBCOLOR *pSrcImage, -//** int srcWidth, int srcHeight, -//** RGBCOLOR *pDestImage, -//** int destWidth, int destHeight, -//** double (*FilterProc)(double) ) -//** Returns: 0 on failure and 1 on success -//** Description: Filters a 2d image with a two pass filter by averaging the -//** weighted contributions of the pixels within the filter region. The -//** contributions are determined by a weighting function parameter. -//**------------------------------------------------------------------------- -int FilterTwoPass( RGBCOLOR *pSrcImage, int srcWidth, int srcHeight, - RGBCOLOR *pDestImage, int destWidth, int destHeight, unsigned int wrapFlags, double (*FilterProc)(double) ) -{ - FilterWeights *contrib; - RGBCOLOR *pPixel; - RGBCOLOR *pSrcPixel; - RGBCOLOR *pTempImage; - int iRow; - int iCol; - int iSrcCol; - int iSrcRow; - int iWeight; - double dRed; - double dGreen; - double dBlue; - double dAlpha; - double filterSize = 3.0; - - int maxDim = (srcWidth>srcHeight)?srcWidth:srcHeight; - contrib = (FilterWeights*)malloc(maxDim * sizeof(FilterWeights)); - - //**------------------------------------------------------------------------ - //** Need to create a temporary image to stuff the horizontally scaled image - //**------------------------------------------------------------------------ - pTempImage = (RGBCOLOR *)malloc( destWidth * srcHeight * sizeof(RGBCOLOR) ); - if ( pTempImage == NULL ) - { - // -- GODOT start -- - free( contrib ); - // -- GODOT end -- - return 0; - } - - //**------------------------------------------------------- - //** Horizontally filter the image into the temporary image - //**------------------------------------------------------- - bool bWrapHorizontal = !!(wrapFlags&FILTER_WRAP_X); - CalcContributions( srcWidth, destWidth, filterSize, bWrapHorizontal, FilterProc, contrib ); - for ( iRow = 0; iRow < srcHeight; iRow++ ) - { - for ( iCol = 0; iCol < destWidth; iCol++ ) - { - dRed = 0; - dGreen = 0; - dBlue = 0; - dAlpha = 0; - - for ( iWeight = 0; iWeight < contrib[iCol].numWeights; iWeight++ ) - { - iSrcCol = iWeight + contrib[iCol].first; - if (bWrapHorizontal) - { - iSrcCol = (iSrcCol < 0) ? (srcWidth + iSrcCol) : (iSrcCol >= srcWidth) ? (iSrcCol - srcWidth) : iSrcCol; - } - pSrcPixel = pSrcImage + (iRow * srcWidth) + iSrcCol; - dRed += contrib[iCol].weight[iWeight] * pSrcPixel->rgba[0]; - dGreen += contrib[iCol].weight[iWeight] * pSrcPixel->rgba[1]; - dBlue += contrib[iCol].weight[iWeight] * pSrcPixel->rgba[2]; - dAlpha += contrib[iCol].weight[iWeight] * pSrcPixel->rgba[3]; - } - - pPixel = pTempImage + (iRow * destWidth) + iCol; - pPixel->rgba[0] = static_cast<unsigned char>(std::max(0.0, std::min(255.0, dRed))); - pPixel->rgba[1] = static_cast<unsigned char>(std::max(0.0, std::min(255.0, dGreen))); - pPixel->rgba[2] = static_cast<unsigned char>(std::max(0.0, std::min(255.0, dBlue))); - pPixel->rgba[3] = static_cast<unsigned char>(std::max(0.0, std::min(255.0, dAlpha))); - } - } - - //**------------------------------------------------------- - //** Vertically filter the image into the destination image - //**------------------------------------------------------- - bool bWrapVertical = !!(wrapFlags&FILTER_WRAP_Y); - CalcContributions(srcHeight, destHeight, filterSize, bWrapVertical, FilterProc, contrib); - for ( iCol = 0; iCol < destWidth; iCol++ ) - { - for ( iRow = 0; iRow < destHeight; iRow++ ) - { - dRed = 0; - dGreen = 0; - dBlue = 0; - dAlpha = 0; - - for ( iWeight = 0; iWeight < contrib[iRow].numWeights; iWeight++ ) - { - iSrcRow = iWeight + contrib[iRow].first; - if (bWrapVertical) - { - iSrcRow = (iSrcRow < 0) ? (srcHeight + iSrcRow) : (iSrcRow >= srcHeight) ? (iSrcRow - srcHeight) : iSrcRow; - } - pSrcPixel = pTempImage + (iSrcRow * destWidth) + iCol; - dRed += contrib[iRow].weight[iWeight] * pSrcPixel->rgba[0]; - dGreen += contrib[iRow].weight[iWeight] * pSrcPixel->rgba[1]; - dBlue += contrib[iRow].weight[iWeight] * pSrcPixel->rgba[2]; - dAlpha += contrib[iRow].weight[iWeight] * pSrcPixel->rgba[3]; - } - - pPixel = pDestImage + (iRow * destWidth) + iCol; - pPixel->rgba[0] = (unsigned char)(std::max( 0.0, std::min( 255.0, dRed))); - pPixel->rgba[1] = (unsigned char)(std::max( 0.0, std::min( 255.0, dGreen))); - pPixel->rgba[2] = (unsigned char)(std::max( 0.0, std::min( 255.0, dBlue))); - pPixel->rgba[3] = (unsigned char)(std::max( 0.0, std::min( 255.0, dAlpha))); - } - } - - free( pTempImage ); - free( contrib ); - - return 1; -} - -//**------------------------------------------------------------------------- -//** Name: FilterResample(RGBCOLOR *pSrcImage, int srcWidth, int srcHeight, -//** RGBCOLOR *pDstImage, int dstWidth, int dstHeight) -//** Returns: 1 -//** Description: This function runs a 2d box filter over the srouce image -//** to produce the destination image. -//**------------------------------------------------------------------------- -void FilterResample( RGBCOLOR *pSrcImage, int srcWidth, int srcHeight, - RGBCOLOR *pDstImage, int dstWidth, int dstHeight ) -{ - int iRow; - int iCol; - int iSampleRow; - int iSampleCol; - int iFirstSampleRow; - int iFirstSampleCol; - int iLastSampleRow; - int iLastSampleCol; - int red; - int green; - int blue; - int alpha; - int samples; - float xScale; - float yScale; - - RGBCOLOR *pSrcPixel; - RGBCOLOR *pDstPixel; - - xScale = (float)srcWidth / dstWidth; - yScale = (float)srcHeight / dstHeight; - - for ( iRow = 0; iRow < dstHeight; iRow++ ) - { - for ( iCol = 0; iCol < dstWidth; iCol++ ) - { - iFirstSampleRow = (int)(iRow * yScale); - iLastSampleRow = (int)ceil(iFirstSampleRow + yScale - 1); - if ( iLastSampleRow >= srcHeight ) - { - iLastSampleRow = srcHeight - 1; - } - - iFirstSampleCol = (int)(iCol * xScale); - iLastSampleCol = (int)ceil(iFirstSampleCol + xScale - 1); - if ( iLastSampleCol >= srcWidth ) - { - iLastSampleCol = srcWidth - 1; - } - - samples = 0; - red = 0; - green = 0; - blue = 0; - alpha = 0; - for ( iSampleRow = iFirstSampleRow; iSampleRow <= iLastSampleRow; iSampleRow++ ) - { - for ( iSampleCol = iFirstSampleCol; iSampleCol <= iLastSampleCol; iSampleCol++ ) - { - pSrcPixel = pSrcImage + iSampleRow * srcWidth + iSampleCol; - red += pSrcPixel->rgba[0]; - green += pSrcPixel->rgba[1]; - blue += pSrcPixel->rgba[2]; - alpha += pSrcPixel->rgba[3]; - - samples++; - } - } - - pDstPixel = pDstImage + iRow * dstWidth + iCol; - if ( samples > 0 ) - { - pDstPixel->rgba[0] = static_cast<uint8_t>(red / samples); - pDstPixel->rgba[1] = static_cast<uint8_t>(green / samples); - pDstPixel->rgba[2] = static_cast<uint8_t>(blue / samples); - pDstPixel->rgba[3] = static_cast<uint8_t>(alpha / samples); - } - else - { - pDstPixel->rgba[0] = static_cast<uint8_t>(red); - pDstPixel->rgba[1] = static_cast<uint8_t>(green); - pDstPixel->rgba[2] = static_cast<uint8_t>(blue); - pDstPixel->rgba[3] = static_cast<uint8_t>(alpha); - } - } - } -} - - -}
\ No newline at end of file diff --git a/thirdparty/etc2comp/EtcFilter.h b/thirdparty/etc2comp/EtcFilter.h deleted file mode 100644 index fcf125c6df..0000000000 --- a/thirdparty/etc2comp/EtcFilter.h +++ /dev/null @@ -1,244 +0,0 @@ -#pragma once -#include <stdint.h> -#include <algorithm> - -namespace Etc -{ - -enum FilterEnums -{ - MaxFilterSize = 32 -}; - -enum WrapFlags -{ - FILTER_WRAP_NONE = 0, - FILTER_WRAP_X = 0x1, - FILTER_WRAP_Y = 0x2 -}; - -typedef struct tagFilterWeights -{ - int first; - int numWeights; - double weight[MaxFilterSize * 2 + 1]; -} FilterWeights; - -typedef struct tagRGBCOLOR -{ - union - { - uint32_t ulColor; - uint8_t rgba[4]; - }; -} RGBCOLOR; - - -double FilterBox( double t ); -double FilterLinear( double t ); -double FilterLanczos3( double t ); - -int FilterTwoPass( RGBCOLOR *pSrcImage, int srcWidth, int srcHeight, - RGBCOLOR *pDestImage, int destWidth, int destHeight, unsigned int wrapFlags, double (*FilterProc)(double) ); -void FilterResample( RGBCOLOR *pSrcImage, int srcWidth, int srcHeight, - RGBCOLOR *pDstImage, int dstWidth, int dstHeight ); - - -void CalcContributions(int srcSize, int destSize, double filterSize, bool wrap, double(*FilterProc)(double), FilterWeights contrib[]); - -template <typename T> -void FilterResample(T *pSrcImage, int srcWidth, int srcHeight, T *pDstImage, int dstWidth, int dstHeight) -{ - float xScale; - float yScale; - - T *pSrcPixel; - T *pDstPixel; - - xScale = (float)srcWidth / dstWidth; - yScale = (float)srcHeight / dstHeight; - - for (int iRow = 0; iRow < dstHeight; iRow++) - { - for (int iCol = 0; iCol < dstWidth; iCol++) - { - int samples; - int iFirstSampleRow; - int iFirstSampleCol; - int iLastSampleRow; - int iLastSampleCol; - float red; - float green; - float blue; - float alpha; - - iFirstSampleRow = (int)(iRow * yScale); - iLastSampleRow = (int)ceil(iFirstSampleRow + yScale - 1); - if (iLastSampleRow >= srcHeight) - { - iLastSampleRow = srcHeight - 1; - } - - iFirstSampleCol = (int)(iCol * xScale); - iLastSampleCol = (int)ceil(iFirstSampleCol + xScale - 1); - if (iLastSampleCol >= srcWidth) - { - iLastSampleCol = srcWidth - 1; - } - - samples = 0; - red = 0.f; - green = 0.f; - blue = 0.f; - alpha = 0.f; - for (int iSampleRow = iFirstSampleRow; iSampleRow <= iLastSampleRow; iSampleRow++) - { - for (int iSampleCol = iFirstSampleCol; iSampleCol <= iLastSampleCol; iSampleCol++) - { - pSrcPixel = pSrcImage + (iSampleRow * srcWidth + iSampleCol) * 4; - red += static_cast<float>(pSrcPixel[0]); - green += static_cast<float>(pSrcPixel[1]); - blue += static_cast<float>(pSrcPixel[2]); - alpha += static_cast<float>(pSrcPixel[3]); - - samples++; - } - } - - pDstPixel = pDstImage + (iRow * dstWidth + iCol) * 4; - if (samples > 0) - { - pDstPixel[0] = static_cast<T>(red / samples); - pDstPixel[1] = static_cast<T>(green / samples); - pDstPixel[2] = static_cast<T>(blue / samples); - pDstPixel[3] = static_cast<T>(alpha / samples); - } - else - { - pDstPixel[0] = static_cast<T>(red); - pDstPixel[1] = static_cast<T>(green); - pDstPixel[2] = static_cast<T>(blue); - pDstPixel[3] = static_cast<T>(alpha); - } - } - } - -} - -//**------------------------------------------------------------------------- -//** Name: Filter_TwoPass( RGBCOLOR *pSrcImage, -//** int srcWidth, int srcHeight, -//** RGBCOLOR *pDestImage, -//** int destWidth, int destHeight, -//** double (*FilterProc)(double) ) -//** Returns: 0 on failure and 1 on success -//** Description: Filters a 2d image with a two pass filter by averaging the -//** weighted contributions of the pixels within the filter region. The -//** contributions are determined by a weighting function parameter. -//**------------------------------------------------------------------------- -template <typename T> -int FilterTwoPass(T *pSrcImage, int srcWidth, int srcHeight, - T *pDestImage, int destWidth, int destHeight, unsigned int wrapFlags, double(*FilterProc)(double)) -{ - const int numComponents = 4; - FilterWeights *contrib; - T *pPixel; - T *pTempImage; - double dRed; - double dGreen; - double dBlue; - double dAlpha; - double filterSize = 3.0; - - int maxDim = (srcWidth>srcHeight) ? srcWidth : srcHeight; - contrib = new FilterWeights[maxDim]; - - //**------------------------------------------------------------------------ - //** Need to create a temporary image to stuff the horizontally scaled image - //**------------------------------------------------------------------------ - pTempImage = new T[destWidth * srcHeight * numComponents]; - if (pTempImage == NULL) - { - return 0; - } - - //**------------------------------------------------------- - //** Horizontally filter the image into the temporary image - //**------------------------------------------------------- - bool bWrapHorizontal = !!(wrapFlags&FILTER_WRAP_X); - CalcContributions(srcWidth, destWidth, filterSize, bWrapHorizontal, FilterProc, contrib); - for (int iRow = 0; iRow < srcHeight; iRow++) - { - for (int iCol = 0; iCol < destWidth; iCol++) - { - dRed = 0; - dGreen = 0; - dBlue = 0; - dAlpha = 0; - - for (int iWeight = 0; iWeight < contrib[iCol].numWeights; iWeight++) - { - int iSrcCol = iWeight + contrib[iCol].first; - if(bWrapHorizontal) - { - iSrcCol = (iSrcCol < 0)?(srcWidth+iSrcCol):(iSrcCol >= srcWidth)?(iSrcCol-srcWidth):iSrcCol; - } - T* pSrcPixel = pSrcImage + ((iRow * srcWidth) + iSrcCol)*numComponents; - dRed += contrib[iCol].weight[iWeight] * pSrcPixel[0]; - dGreen += contrib[iCol].weight[iWeight] * pSrcPixel[1]; - dBlue += contrib[iCol].weight[iWeight] * pSrcPixel[2]; - dAlpha += contrib[iCol].weight[iWeight] * pSrcPixel[3]; - } - - pPixel = pTempImage + ((iRow * destWidth) + iCol)*numComponents; - pPixel[0] = static_cast<T>(std::max(0.0, std::min(255.0, dRed))); - pPixel[1] = static_cast<T>(std::max(0.0, std::min(255.0, dGreen))); - pPixel[2] = static_cast<T>(std::max(0.0, std::min(255.0, dBlue))); - pPixel[3] = static_cast<T>(std::max(0.0, std::min(255.0, dAlpha))); - } - } - - //**------------------------------------------------------- - //** Vertically filter the image into the destination image - //**------------------------------------------------------- - bool bWrapVertical = !!(wrapFlags&FILTER_WRAP_Y); - CalcContributions(srcHeight, destHeight, filterSize, bWrapVertical, FilterProc, contrib); - for (int iCol = 0; iCol < destWidth; iCol++) - { - for (int iRow = 0; iRow < destHeight; iRow++) - { - dRed = 0; - dGreen = 0; - dBlue = 0; - dAlpha = 0; - - for (int iWeight = 0; iWeight < contrib[iRow].numWeights; iWeight++) - { - int iSrcRow = iWeight + contrib[iRow].first; - if (bWrapVertical) - { - iSrcRow = (iSrcRow < 0) ? (srcHeight + iSrcRow) : (iSrcRow >= srcHeight) ? (iSrcRow - srcHeight) : iSrcRow; - } - T* pSrcPixel = pTempImage + ((iSrcRow * destWidth) + iCol)*numComponents; - dRed += contrib[iRow].weight[iWeight] * pSrcPixel[0]; - dGreen += contrib[iRow].weight[iWeight] * pSrcPixel[1]; - dBlue += contrib[iRow].weight[iWeight] * pSrcPixel[2]; - dAlpha += contrib[iRow].weight[iWeight] * pSrcPixel[3]; - } - - pPixel = pDestImage + ((iRow * destWidth) + iCol)*numComponents; - pPixel[0] = static_cast<T>(std::max(0.0, std::min(255.0, dRed))); - pPixel[1] = static_cast<T>(std::max(0.0, std::min(255.0, dGreen))); - pPixel[2] = static_cast<T>(std::max(0.0, std::min(255.0, dBlue))); - pPixel[3] = static_cast<T>(std::max(0.0, std::min(255.0, dAlpha))); - } - } - - delete[] pTempImage; - delete[] contrib; - - return 1; -} - - -}
\ No newline at end of file diff --git a/thirdparty/etc2comp/EtcImage.cpp b/thirdparty/etc2comp/EtcImage.cpp deleted file mode 100644 index 7a1058844d..0000000000 --- a/thirdparty/etc2comp/EtcImage.cpp +++ /dev/null @@ -1,685 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcImage.cpp - -Image is an array of 4x4 blocks that represent the encoding of the source image - -*/ - -#include "EtcConfig.h" - -#include <stdlib.h> - -#include "EtcImage.h" - -#include "Etc.h" -#include "EtcBlock4x4.h" -#include "EtcBlock4x4EncodingBits.h" -#include "EtcSortedBlockList.h" - -#if ETC_WINDOWS -#include <windows.h> -#endif -#include <ctime> -#include <chrono> -#include <future> -#include <stdio.h> -#include <string.h> -#include <assert.h> - -// fix conflict with Block4x4::AlphaMix -#ifdef OPAQUE -#undef OPAQUE -#endif -#ifdef TRANSPARENT -#undef TRANSPARENT -#endif - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // - Image::Image(void) - { - m_encodingStatus = EncodingStatus::SUCCESS; - m_warningsToCapture = EncodingStatus::SUCCESS; - m_pafrgbaSource = nullptr; - - m_pablock = nullptr; - - m_encodingbitsformat = Block4x4EncodingBits::Format::UNKNOWN; - m_uiEncodingBitsBytes = 0; - m_paucEncodingBits = nullptr; - - m_format = Format::UNKNOWN; - m_iNumOpaquePixels = 0; - m_iNumTranslucentPixels = 0; - m_iNumTransparentPixels = 0; - } - - // ---------------------------------------------------------------------------------------------------- - // constructor using source image - // used to set state before Encode() is called - // - Image::Image(float *a_pafSourceRGBA, unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - ErrorMetric a_errormetric) - { - m_encodingStatus = EncodingStatus::SUCCESS; - m_warningsToCapture = EncodingStatus::SUCCESS; - m_pafrgbaSource = (ColorFloatRGBA *) a_pafSourceRGBA; - m_uiSourceWidth = a_uiSourceWidth; - m_uiSourceHeight = a_uiSourceHeight; - - m_uiExtendedWidth = CalcExtendedDimension((unsigned short)m_uiSourceWidth); - m_uiExtendedHeight = CalcExtendedDimension((unsigned short)m_uiSourceHeight); - - m_uiBlockColumns = m_uiExtendedWidth >> 2; - m_uiBlockRows = m_uiExtendedHeight >> 2; - - m_pablock = new Block4x4[GetNumberOfBlocks()]; - assert(m_pablock); - - m_format = Format::UNKNOWN; - - m_encodingbitsformat = Block4x4EncodingBits::Format::UNKNOWN; - m_uiEncodingBitsBytes = 0; - m_paucEncodingBits = nullptr; - - m_errormetric = a_errormetric; - m_fEffort = 0.0f; - - m_iEncodeTime_ms = -1; - - m_iNumOpaquePixels = 0; - m_iNumTranslucentPixels = 0; - m_iNumTransparentPixels = 0; - m_bVerboseOutput = false; - - } - - // ---------------------------------------------------------------------------------------------------- - // constructor using encoding bits - // recreates encoding state using a previously encoded image - // - Image::Image(Format a_format, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight, - unsigned char *a_paucEncidingBits, unsigned int a_uiEncodingBitsBytes, - Image *a_pimageSource, ErrorMetric a_errormetric) - { - m_encodingStatus = EncodingStatus::SUCCESS; - m_pafrgbaSource = nullptr; - m_uiSourceWidth = a_uiSourceWidth; - m_uiSourceHeight = a_uiSourceHeight; - - m_uiExtendedWidth = CalcExtendedDimension((unsigned short)m_uiSourceWidth); - m_uiExtendedHeight = CalcExtendedDimension((unsigned short)m_uiSourceHeight); - - m_uiBlockColumns = m_uiExtendedWidth >> 2; - m_uiBlockRows = m_uiExtendedHeight >> 2; - - unsigned int uiBlocks = GetNumberOfBlocks(); - - m_pablock = new Block4x4[uiBlocks]; - assert(m_pablock); - - m_format = a_format; - - m_iNumOpaquePixels = 0; - m_iNumTranslucentPixels = 0; - m_iNumTransparentPixels = 0; - - m_encodingbitsformat = DetermineEncodingBitsFormat(m_format); - if (m_encodingbitsformat == Block4x4EncodingBits::Format::UNKNOWN) - { - AddToEncodingStatus(ERROR_UNKNOWN_FORMAT); - return; - } - m_uiEncodingBitsBytes = a_uiEncodingBitsBytes; - m_paucEncodingBits = a_paucEncidingBits; - - m_errormetric = a_errormetric; - m_fEffort = 0.0f; - m_bVerboseOutput = false; - m_iEncodeTime_ms = -1; - - unsigned char *paucEncodingBits = m_paucEncodingBits; - unsigned int uiEncodingBitsBytesPerBlock = Block4x4EncodingBits::GetBytesPerBlock(m_encodingbitsformat); - - unsigned int uiH = 0; - unsigned int uiV = 0; - for (unsigned int uiBlock = 0; uiBlock < uiBlocks; uiBlock++) - { - m_pablock[uiBlock].InitFromEtcEncodingBits(a_format, uiH, uiV, paucEncodingBits, - a_pimageSource, a_errormetric); - paucEncodingBits += uiEncodingBitsBytesPerBlock; - uiH += 4; - if (uiH >= m_uiSourceWidth) - { - uiH = 0; - uiV += 4; - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // - Image::~Image(void) - { - if (m_pablock != nullptr) - { - delete[] m_pablock; - m_pablock = nullptr; - } - - /*if (m_paucEncodingBits != nullptr) - { - delete[] m_paucEncodingBits; - m_paucEncodingBits = nullptr; - }*/ - } - - // ---------------------------------------------------------------------------------------------------- - // encode an image - // create a set of encoding bits that conforms to a_format - // find best fit using a_errormetric - // explore a range of possible encodings based on a_fEffort (range = [0:100]) - // speed up process using a_uiJobs as the number of process threads (a_uiJobs must not excede a_uiMaxJobs) - // - Image::EncodingStatus Image::Encode(Format a_format, ErrorMetric a_errormetric, float a_fEffort, unsigned int a_uiJobs, unsigned int a_uiMaxJobs) - { - - auto start = std::chrono::steady_clock::now(); - - m_encodingStatus = EncodingStatus::SUCCESS; - - m_format = a_format; - m_errormetric = a_errormetric; - m_fEffort = a_fEffort; - - if (m_errormetric < 0 || m_errormetric > ERROR_METRICS) - { - AddToEncodingStatus(ERROR_UNKNOWN_ERROR_METRIC); - return m_encodingStatus; - } - - if (m_fEffort < ETCCOMP_MIN_EFFORT_LEVEL) - { - AddToEncodingStatus(WARNING_EFFORT_OUT_OF_RANGE); - m_fEffort = ETCCOMP_MIN_EFFORT_LEVEL; - } - else if (m_fEffort > ETCCOMP_MAX_EFFORT_LEVEL) - { - AddToEncodingStatus(WARNING_EFFORT_OUT_OF_RANGE); - m_fEffort = ETCCOMP_MAX_EFFORT_LEVEL; - } - if (a_uiJobs < 1) - { - a_uiJobs = 1; - AddToEncodingStatus(WARNING_JOBS_OUT_OF_RANGE); - } - else if (a_uiJobs > a_uiMaxJobs) - { - a_uiJobs = a_uiMaxJobs; - AddToEncodingStatus(WARNING_JOBS_OUT_OF_RANGE); - } - - m_encodingbitsformat = DetermineEncodingBitsFormat(m_format); - - if (m_encodingbitsformat == Block4x4EncodingBits::Format::UNKNOWN) - { - AddToEncodingStatus(ERROR_UNKNOWN_FORMAT); - return m_encodingStatus; - } - - assert(m_paucEncodingBits == nullptr); - m_uiEncodingBitsBytes = GetNumberOfBlocks() * Block4x4EncodingBits::GetBytesPerBlock(m_encodingbitsformat); - m_paucEncodingBits = new unsigned char[m_uiEncodingBitsBytes]; - - InitBlocksAndBlockSorter(); - - - std::future<void> *handle = new std::future<void>[a_uiMaxJobs]; - - unsigned int uiNumThreadsNeeded = 0; - unsigned int uiUnfinishedBlocks = GetNumberOfBlocks(); - - uiNumThreadsNeeded = (uiUnfinishedBlocks < a_uiJobs) ? uiUnfinishedBlocks : a_uiJobs; - - for (int i = 0; i < (int)uiNumThreadsNeeded - 1; i++) - { - handle[i] = async(std::launch::async, &Image::RunFirstPass, this, i, uiNumThreadsNeeded); - } - - RunFirstPass(uiNumThreadsNeeded - 1, uiNumThreadsNeeded); - - for (int i = 0; i < (int)uiNumThreadsNeeded - 1; i++) - { - handle[i].get(); - } - - // perform effort-based encoding - if (m_fEffort > ETCCOMP_MIN_EFFORT_LEVEL) - { - unsigned int uiFinishedBlocks = 0; - unsigned int uiTotalEffortBlocks = static_cast<unsigned int>(roundf(0.01f * m_fEffort * GetNumberOfBlocks())); - - if (m_bVerboseOutput) - { - printf("effortblocks = %d\n", uiTotalEffortBlocks); - } - unsigned int uiPass = 0; - while (1) - { - if (m_bVerboseOutput) - { - uiPass++; - printf("pass %u\n", uiPass); - } - m_psortedblocklist->Sort(); - uiUnfinishedBlocks = m_psortedblocklist->GetNumberOfSortedBlocks(); - uiFinishedBlocks = GetNumberOfBlocks() - uiUnfinishedBlocks; - if (m_bVerboseOutput) - { - printf(" %u unfinished blocks\n", uiUnfinishedBlocks); - // m_psortedblocklist->Print(); - } - - - - //stop enocding when we did enough to satify the effort percentage - if (uiFinishedBlocks >= uiTotalEffortBlocks) - { - if (m_bVerboseOutput) - { - printf("Finished %d Blocks out of %d\n", uiFinishedBlocks, uiTotalEffortBlocks); - } - break; - } - - unsigned int uiIteratedBlocks = 0; - unsigned int blocksToIterateThisPass = (uiTotalEffortBlocks - uiFinishedBlocks); - uiNumThreadsNeeded = (uiUnfinishedBlocks < a_uiJobs) ? uiUnfinishedBlocks : a_uiJobs; - - if (uiNumThreadsNeeded <= 1) - { - //since we already how many blocks each thread will process - //cap the thread limit to do the proper amount of work, and not more - uiIteratedBlocks = IterateThroughWorstBlocks(blocksToIterateThisPass, 0, 1); - } - else - { - //we have a lot of work to do, so lets multi thread it - std::future<unsigned int> *handleToBlockEncoders = new std::future<unsigned int>[uiNumThreadsNeeded-1]; - - for (int i = 0; i < (int)uiNumThreadsNeeded - 1; i++) - { - handleToBlockEncoders[i] = async(std::launch::async, &Image::IterateThroughWorstBlocks, this, blocksToIterateThisPass, i, uiNumThreadsNeeded); - } - uiIteratedBlocks = IterateThroughWorstBlocks(blocksToIterateThisPass, uiNumThreadsNeeded - 1, uiNumThreadsNeeded); - - for (int i = 0; i < (int)uiNumThreadsNeeded - 1; i++) - { - uiIteratedBlocks += handleToBlockEncoders[i].get(); - } - - delete[] handleToBlockEncoders; - } - - if (m_bVerboseOutput) - { - printf(" %u iterated blocks\n", uiIteratedBlocks); - } - } - } - - // generate Etc2-compatible bit-format 4x4 blocks - for (int i = 0; i < (int)a_uiJobs - 1; i++) - { - handle[i] = async(std::launch::async, &Image::SetEncodingBits, this, i, a_uiJobs); - } - SetEncodingBits(a_uiJobs - 1, a_uiJobs); - - for (int i = 0; i < (int)a_uiJobs - 1; i++) - { - handle[i].get(); - } - - auto end = std::chrono::steady_clock::now(); - std::chrono::milliseconds elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(end - start); - m_iEncodeTime_ms = (int)elapsed.count(); - - delete[] handle; - delete m_psortedblocklist; - return m_encodingStatus; - } - - // ---------------------------------------------------------------------------------------------------- - // iterate the encoding thru the blocks with the worst error - // stop when a_uiMaxBlocks blocks have been iterated - // split the blocks between the process threads using a_uiMultithreadingOffset and a_uiMultithreadingStride - // - unsigned int Image::IterateThroughWorstBlocks(unsigned int a_uiMaxBlocks, - unsigned int a_uiMultithreadingOffset, - unsigned int a_uiMultithreadingStride) - { - assert(a_uiMultithreadingStride > 0); - unsigned int uiIteratedBlocks = a_uiMultithreadingOffset; - - SortedBlockList::Link *plink = m_psortedblocklist->GetLinkToFirstBlock(); - for (plink = plink->Advance(a_uiMultithreadingOffset); - plink != nullptr; - plink = plink->Advance(a_uiMultithreadingStride) ) - { - if (uiIteratedBlocks >= a_uiMaxBlocks) - { - break; - } - - plink->GetBlock()->PerformEncodingIteration(m_fEffort); - - uiIteratedBlocks += a_uiMultithreadingStride; - } - - return uiIteratedBlocks; - } - - // ---------------------------------------------------------------------------------------------------- - // determine which warnings to check for during Encode() based on encoding format - // - void Image::FindEncodingWarningTypesForCurFormat() - { - TrackEncodingWarning(WARNING_ALL_TRANSPARENT_PIXELS); - TrackEncodingWarning(WARNING_SOME_RGBA_NOT_0_TO_1); - switch (m_format) - { - case Image::Format::ETC1: - case Image::Format::RGB8: - case Image::Format::SRGB8: - TrackEncodingWarning(WARNING_SOME_NON_OPAQUE_PIXELS); - TrackEncodingWarning(WARNING_SOME_TRANSLUCENT_PIXELS); - break; - - case Image::Format::RGB8A1: - case Image::Format::SRGB8A1: - TrackEncodingWarning(WARNING_SOME_TRANSLUCENT_PIXELS); - TrackEncodingWarning(WARNING_ALL_OPAQUE_PIXELS); - break; - case Image::Format::RGBA8: - case Image::Format::SRGBA8: - TrackEncodingWarning(WARNING_ALL_OPAQUE_PIXELS); - break; - - case Image::Format::R11: - case Image::Format::SIGNED_R11: - TrackEncodingWarning(WARNING_SOME_NON_OPAQUE_PIXELS); - TrackEncodingWarning(WARNING_SOME_TRANSLUCENT_PIXELS); - TrackEncodingWarning(WARNING_SOME_GREEN_VALUES_ARE_NOT_ZERO); - TrackEncodingWarning(WARNING_SOME_BLUE_VALUES_ARE_NOT_ZERO); - break; - - case Image::Format::RG11: - case Image::Format::SIGNED_RG11: - TrackEncodingWarning(WARNING_SOME_NON_OPAQUE_PIXELS); - TrackEncodingWarning(WARNING_SOME_TRANSLUCENT_PIXELS); - TrackEncodingWarning(WARNING_SOME_BLUE_VALUES_ARE_NOT_ZERO); - break; - case Image::Format::FORMATS: - case Image::Format::UNKNOWN: - default: - assert(0); - break; - } - } - - // ---------------------------------------------------------------------------------------------------- - // examine source pixels to check for warnings - // - void Image::FindAndSetEncodingWarnings() - { - int numPixels = (m_uiBlockRows * 4) * (m_uiBlockColumns * 4); - if (m_iNumOpaquePixels == numPixels) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_ALL_OPAQUE_PIXELS); - } - if (m_iNumOpaquePixels < numPixels) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_NON_OPAQUE_PIXELS); - } - if (m_iNumTranslucentPixels > 0) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_TRANSLUCENT_PIXELS); - } - if (m_iNumTransparentPixels == numPixels) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_ALL_TRANSPARENT_PIXELS); - } - if (m_numColorValues.fB > 0.0f) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_BLUE_VALUES_ARE_NOT_ZERO); - } - if (m_numColorValues.fG > 0.0f) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_GREEN_VALUES_ARE_NOT_ZERO); - } - - if (m_numOutOfRangeValues.fR > 0.0f || m_numOutOfRangeValues.fG > 0.0f) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_RGBA_NOT_0_TO_1); - } - if (m_numOutOfRangeValues.fB > 0.0f || m_numOutOfRangeValues.fA > 0.0f) - { - AddToEncodingStatusIfSignfigant(Image::EncodingStatus::WARNING_SOME_RGBA_NOT_0_TO_1); - } - } - - // ---------------------------------------------------------------------------------------------------- - // return a string name for a given image format - // - const char * Image::EncodingFormatToString(Image::Format a_format) - { - switch (a_format) - { - case Image::Format::ETC1: - return "ETC1"; - case Image::Format::RGB8: - return "RGB8"; - case Image::Format::SRGB8: - return "SRGB8"; - - case Image::Format::RGB8A1: - return "RGB8A1"; - case Image::Format::SRGB8A1: - return "SRGB8A1"; - case Image::Format::RGBA8: - return "RGBA8"; - case Image::Format::SRGBA8: - return "SRGBA8"; - - case Image::Format::R11: - return "R11"; - case Image::Format::SIGNED_R11: - return "SIGNED_R11"; - - case Image::Format::RG11: - return "RG11"; - case Image::Format::SIGNED_RG11: - return "SIGNED_RG11"; - case Image::Format::FORMATS: - case Image::Format::UNKNOWN: - default: - return "UNKNOWN"; - } - } - - // ---------------------------------------------------------------------------------------------------- - // return a string name for the image's format - // - const char * Image::EncodingFormatToString(void) - { - return EncodingFormatToString(m_format); - } - - // ---------------------------------------------------------------------------------------------------- - // init image blocks prior to encoding - // init block sorter for subsequent sortings - // check for encoding warnings - // - void Image::InitBlocksAndBlockSorter(void) - { - - FindEncodingWarningTypesForCurFormat(); - - // init each block - Block4x4 *pblock = m_pablock; - unsigned char *paucEncodingBits = m_paucEncodingBits; - for (unsigned int uiBlockRow = 0; uiBlockRow < m_uiBlockRows; uiBlockRow++) - { - unsigned int uiBlockV = uiBlockRow * 4; - - for (unsigned int uiBlockColumn = 0; uiBlockColumn < m_uiBlockColumns; uiBlockColumn++) - { - unsigned int uiBlockH = uiBlockColumn * 4; - - pblock->InitFromSource(this, uiBlockH, uiBlockV, paucEncodingBits, m_errormetric); - - paucEncodingBits += Block4x4EncodingBits::GetBytesPerBlock(m_encodingbitsformat); - - pblock++; - } - } - - FindAndSetEncodingWarnings(); - - // init block sorter - { - m_psortedblocklist = new SortedBlockList(GetNumberOfBlocks(), 100); - - for (unsigned int uiBlock = 0; uiBlock < GetNumberOfBlocks(); uiBlock++) - { - pblock = &m_pablock[uiBlock]; - m_psortedblocklist->AddBlock(pblock); - } - } - - } - - // ---------------------------------------------------------------------------------------------------- - // run the first pass of the encoder - // the encoder generally finds a reasonable, fast encoding - // this is run on all blocks regardless of effort to ensure that all blocks have a valid encoding - // - void Image::RunFirstPass(unsigned int a_uiMultithreadingOffset, unsigned int a_uiMultithreadingStride) - { - assert(a_uiMultithreadingStride > 0); - - for (unsigned int uiBlock = a_uiMultithreadingOffset; - uiBlock < GetNumberOfBlocks(); - uiBlock += a_uiMultithreadingStride) - { - Block4x4 *pblock = &m_pablock[uiBlock]; - pblock->PerformEncodingIteration(m_fEffort); - } - } - - // ---------------------------------------------------------------------------------------------------- - // set the encoding bits (for the output file) based on the best encoding for each block - // - void Image::SetEncodingBits(unsigned int a_uiMultithreadingOffset, - unsigned int a_uiMultithreadingStride) - { - assert(a_uiMultithreadingStride > 0); - - for (unsigned int uiBlock = a_uiMultithreadingOffset; - uiBlock < GetNumberOfBlocks(); - uiBlock += a_uiMultithreadingStride) - { - Block4x4 *pblock = &m_pablock[uiBlock]; - pblock->SetEncodingBitsFromEncoding(); - } - - } - - // ---------------------------------------------------------------------------------------------------- - // return the image error - // image error is the sum of all block errors - // - float Image::GetError(void) - { - float fError = 0.0f; - - for (unsigned int uiBlock = 0; uiBlock < GetNumberOfBlocks(); uiBlock++) - { - Block4x4 *pblock = &m_pablock[uiBlock]; - fError += pblock->GetError(); - } - - return fError; - } - - // ---------------------------------------------------------------------------------------------------- - // determine the encoding bits format based on the encoding format - // the encoding bits format is a family of bit encodings that are shared across various encoding formats - // - Block4x4EncodingBits::Format Image::DetermineEncodingBitsFormat(Format a_format) - { - Block4x4EncodingBits::Format encodingbitsformat; - - // determine encoding bits format from image format - switch (a_format) - { - case Format::ETC1: - case Format::RGB8: - case Format::SRGB8: - encodingbitsformat = Block4x4EncodingBits::Format::RGB8; - break; - - case Format::RGBA8: - case Format::SRGBA8: - encodingbitsformat = Block4x4EncodingBits::Format::RGBA8; - break; - - case Format::R11: - case Format::SIGNED_R11: - encodingbitsformat = Block4x4EncodingBits::Format::R11; - break; - - case Format::RG11: - case Format::SIGNED_RG11: - encodingbitsformat = Block4x4EncodingBits::Format::RG11; - break; - - case Format::RGB8A1: - case Format::SRGB8A1: - encodingbitsformat = Block4x4EncodingBits::Format::RGB8A1; - break; - - default: - encodingbitsformat = Block4x4EncodingBits::Format::UNKNOWN; - break; - } - - return encodingbitsformat; - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcImage.h b/thirdparty/etc2comp/EtcImage.h deleted file mode 100644 index bd807ac32e..0000000000 --- a/thirdparty/etc2comp/EtcImage.h +++ /dev/null @@ -1,249 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -//#include "Etc.h" -#include "EtcColorFloatRGBA.h" -#include "EtcBlock4x4EncodingBits.h" -#include "EtcErrorMetric.h" - - -namespace Etc -{ - class Block4x4; - class EncoderSpec; - class SortedBlockList; - - class Image - { - public: - - //the differnt warning and errors that can come up during encoding - enum EncodingStatus - { - SUCCESS = 0, - // - WARNING_THRESHOLD = 1 << 0, - // - WARNING_EFFORT_OUT_OF_RANGE = 1 << 1, - WARNING_JOBS_OUT_OF_RANGE = 1 << 2, - WARNING_SOME_NON_OPAQUE_PIXELS = 1 << 3,//just for opaque formats, etc1, rgb8, r11, rg11 - WARNING_ALL_OPAQUE_PIXELS = 1 << 4, - WARNING_ALL_TRANSPARENT_PIXELS = 1 << 5, - WARNING_SOME_TRANSLUCENT_PIXELS = 1 << 6,//just for rgb8A1 - WARNING_SOME_RGBA_NOT_0_TO_1 = 1 << 7, - WARNING_SOME_BLUE_VALUES_ARE_NOT_ZERO = 1 << 8, - WARNING_SOME_GREEN_VALUES_ARE_NOT_ZERO = 1 << 9, - // - ERROR_THRESHOLD = 1 << 16, - // - ERROR_UNKNOWN_FORMAT = 1 << 17, - ERROR_UNKNOWN_ERROR_METRIC = 1 << 18, - ERROR_ZERO_WIDTH_OR_HEIGHT = 1 << 19, - // - }; - - enum class Format - { - UNKNOWN, - // - ETC1, - // - // ETC2 formats - RGB8, - SRGB8, - RGBA8, - SRGBA8, - R11, - SIGNED_R11, - RG11, - SIGNED_RG11, - RGB8A1, - SRGB8A1, - // - FORMATS, - // - DEFAULT = SRGB8 - }; - - // constructor using source image - Image(float *a_pafSourceRGBA, unsigned int a_uiSourceWidth, - unsigned int a_uiSourceHeight, - ErrorMetric a_errormetric); - - // constructor using encoding bits - Image(Format a_format, - unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight, - unsigned char *a_paucEncidingBits, unsigned int a_uiEncodingBitsBytes, - Image *a_pimageSource, - ErrorMetric a_errormetric); - - ~Image(void); - - EncodingStatus Encode(Format a_format, ErrorMetric a_errormetric, float a_fEffort, - unsigned int a_uiJobs, unsigned int a_uiMaxJobs); - - inline void AddToEncodingStatus(EncodingStatus a_encStatus) - { - m_encodingStatus = (EncodingStatus)((unsigned int)m_encodingStatus | (unsigned int)a_encStatus); - } - - inline unsigned int GetSourceWidth(void) - { - return m_uiSourceWidth; - } - - inline unsigned int GetSourceHeight(void) - { - return m_uiSourceHeight; - } - - inline unsigned int GetExtendedWidth(void) - { - return m_uiExtendedWidth; - } - - inline unsigned int GetExtendedHeight(void) - { - return m_uiExtendedHeight; - } - - inline unsigned int GetNumberOfBlocks() - { - return m_uiBlockColumns * m_uiBlockRows; - } - - inline Block4x4 * GetBlocks() - { - return m_pablock; - } - - inline unsigned char * GetEncodingBits(void) - { - return m_paucEncodingBits; - } - - inline unsigned int GetEncodingBitsBytes(void) - { - return m_uiEncodingBitsBytes; - } - - inline int GetEncodingTimeMs(void) - { - return m_iEncodeTime_ms; - } - - float GetError(void); - - inline ColorFloatRGBA * GetSourcePixel(unsigned int a_uiH, unsigned int a_uiV) - { - if (a_uiH >= m_uiSourceWidth || a_uiV >= m_uiSourceHeight) - { - return nullptr; - } - - return &m_pafrgbaSource[a_uiV*m_uiSourceWidth + a_uiH]; - } - - inline Format GetFormat(void) - { - return m_format; - } - - static Block4x4EncodingBits::Format DetermineEncodingBitsFormat(Format a_format); - - inline static unsigned short CalcExtendedDimension(unsigned short a_ushOriginalDimension) - { - return (unsigned short)((a_ushOriginalDimension + 3) & ~3); - } - - inline ErrorMetric GetErrorMetric(void) - { - return m_errormetric; - } - - static const char * EncodingFormatToString(Image::Format a_format); - const char * EncodingFormatToString(void); - //used to get basic information about the image data - int m_iNumOpaquePixels; - int m_iNumTranslucentPixels; - int m_iNumTransparentPixels; - - ColorFloatRGBA m_numColorValues; - ColorFloatRGBA m_numOutOfRangeValues; - - bool m_bVerboseOutput; - private: - //add a warning or error to check for while encoding - inline void TrackEncodingWarning(EncodingStatus a_encStatus) - { - m_warningsToCapture = (EncodingStatus)((unsigned int)m_warningsToCapture | (unsigned int)a_encStatus); - } - - //report the warning if it is something we care about for this encoding - inline void AddToEncodingStatusIfSignfigant(EncodingStatus a_encStatus) - { - if ((EncodingStatus)((unsigned int)m_warningsToCapture & (unsigned int)a_encStatus) == a_encStatus) - { - AddToEncodingStatus(a_encStatus); - } - } - - Image(void); - void FindEncodingWarningTypesForCurFormat(); - void FindAndSetEncodingWarnings(); - - void InitBlocksAndBlockSorter(void); - - void RunFirstPass(unsigned int a_uiMultithreadingOffset, - unsigned int a_uiMultithreadingStride); - - void SetEncodingBits(unsigned int a_uiMultithreadingOffset, - unsigned int a_uiMultithreadingStride); - - unsigned int IterateThroughWorstBlocks(unsigned int a_uiMaxBlocks, - unsigned int a_uiMultithreadingOffset, - unsigned int a_uiMultithreadingStride); - - // inputs - ColorFloatRGBA *m_pafrgbaSource; - unsigned int m_uiSourceWidth; - unsigned int m_uiSourceHeight; - unsigned int m_uiExtendedWidth; - unsigned int m_uiExtendedHeight; - unsigned int m_uiBlockColumns; - unsigned int m_uiBlockRows; - // intermediate data - Block4x4 *m_pablock; - // encoding - Format m_format; - Block4x4EncodingBits::Format m_encodingbitsformat; - unsigned int m_uiEncodingBitsBytes; // for entire image - unsigned char *m_paucEncodingBits; - ErrorMetric m_errormetric; - float m_fEffort; - // stats - int m_iEncodeTime_ms; - - SortedBlockList *m_psortedblocklist; - //this will hold any warning or errors that happen during encoding - EncodingStatus m_encodingStatus; - //these will be the warnings we are tracking - EncodingStatus m_warningsToCapture; - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcIndividualTrys.cpp b/thirdparty/etc2comp/EtcIndividualTrys.cpp deleted file mode 100644 index 56ff4c65ec..0000000000 --- a/thirdparty/etc2comp/EtcIndividualTrys.cpp +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcIndividualTrys.cpp - -Gathers the results of the various encoding trys for both halves of a 4x4 block for Individual mode - -*/ - -#include "EtcConfig.h" -#include "EtcIndividualTrys.h" - -#include <assert.h> - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // construct a list of trys (encoding attempts) - // - // a_frgbaColor1 is the basecolor for the first half - // a_frgbaColor2 is the basecolor for the second half - // a_pauiPixelMapping1 is the pixel order for the first half - // a_pauiPixelMapping2 is the pixel order for the second half - // a_uiRadius is the amount to vary the base colors - // - IndividualTrys::IndividualTrys(ColorFloatRGBA a_frgbaColor1, ColorFloatRGBA a_frgbaColor2, - const unsigned int *a_pauiPixelMapping1, - const unsigned int *a_pauiPixelMapping2, - unsigned int a_uiRadius) - { - assert(a_uiRadius <= MAX_RADIUS); - - ColorFloatRGBA frgbaQuantizedColor1 = a_frgbaColor1.QuantizeR4G4B4(); - ColorFloatRGBA frgbaQuantizedColor2 = a_frgbaColor2.QuantizeR4G4B4(); - - // quantize base colors - // ensure that trys with a_uiRadius don't overflow - int iRed1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntRed(15.0f), a_uiRadius); - int iGreen1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntGreen(15.0f), a_uiRadius); - int iBlue1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntBlue(15.0f), a_uiRadius); - int iRed2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntRed(15.0f), a_uiRadius); - int iGreen2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntGreen(15.0f), a_uiRadius); - int iBlue2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntBlue(15.0f), a_uiRadius); - - m_half1.Init(iRed1, iGreen1, iBlue1, a_pauiPixelMapping1, a_uiRadius); - m_half2.Init(iRed2, iGreen2, iBlue2, a_pauiPixelMapping2, a_uiRadius); - - } - - // ---------------------------------------------------------------------------------------------------- - // - void IndividualTrys::Half::Init(int a_iRed, int a_iGreen, int a_iBlue, - const unsigned int *a_pauiPixelMapping, unsigned int a_uiRadius) - { - - m_iRed = a_iRed; - m_iGreen = a_iGreen; - m_iBlue = a_iBlue; - - m_pauiPixelMapping = a_pauiPixelMapping; - m_uiRadius = a_uiRadius; - - m_uiTrys = 0; - - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcIndividualTrys.h b/thirdparty/etc2comp/EtcIndividualTrys.h deleted file mode 100644 index 5fb12fbcf4..0000000000 --- a/thirdparty/etc2comp/EtcIndividualTrys.h +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include "EtcColorFloatRGBA.h" - -namespace Etc -{ - - class IndividualTrys - { - public: - - static const unsigned int MAX_RADIUS = 1; - - IndividualTrys(ColorFloatRGBA a_frgbaColor1, - ColorFloatRGBA a_frgbaColor2, - const unsigned int *a_pauiPixelMapping1, - const unsigned int *a_pauiPixelMapping2, - unsigned int a_uiRadius); - - inline static int MoveAwayFromEdge(int a_i, int a_iDistance) - { - if (a_i < (0+ a_iDistance)) - { - return (0 + a_iDistance); - } - else if (a_i > (15- a_iDistance)) - { - return (15 - a_iDistance); - } - - return a_i; - } - - class Try - { - public : - static const unsigned int SELECTORS = 8; // per half - - int m_iRed; - int m_iGreen; - int m_iBlue; - unsigned int m_uiCW; - unsigned int m_auiSelectors[SELECTORS]; - float m_fError; - }; - - class Half - { - public: - - static const unsigned int MAX_TRYS = 27; - - void Init(int a_iRed, int a_iGreen, int a_iBlue, - const unsigned int *a_pauiPixelMapping, - unsigned int a_uiRadius); - - // center of trys - int m_iRed; - int m_iGreen; - int m_iBlue; - - const unsigned int *m_pauiPixelMapping; - unsigned int m_uiRadius; - - unsigned int m_uiTrys; - Try m_atry[MAX_TRYS]; - - Try *m_ptryBest; - }; - - Half m_half1; - Half m_half2; - - }; - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcMath.cpp b/thirdparty/etc2comp/EtcMath.cpp deleted file mode 100644 index 096d5f7ab9..0000000000 --- a/thirdparty/etc2comp/EtcMath.cpp +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "EtcConfig.h" -#include "EtcMath.h" - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // calculate the line that best fits the set of XY points contained in a_afX[] and a_afY[] - // use a_fSlope and a_fOffset to define that line - // - bool Regression(float a_afX[], float a_afY[], unsigned int a_Points, - float *a_fSlope, float *a_fOffset) - { - float fPoints = (float)a_Points; - - float fSumX = 0.0f; - float fSumY = 0.0f; - float fSumXY = 0.0f; - float fSumX2 = 0.0f; - - for (unsigned int uiPoint = 0; uiPoint < a_Points; uiPoint++) - { - fSumX += a_afX[uiPoint]; - fSumY += a_afY[uiPoint]; - fSumXY += a_afX[uiPoint] * a_afY[uiPoint]; - fSumX2 += a_afX[uiPoint] * a_afX[uiPoint]; - } - - float fDivisor = fPoints*fSumX2 - fSumX*fSumX; - - // if vertical line - if (fDivisor == 0.0f) - { - *a_fSlope = 0.0f; - *a_fOffset = 0.0f; - return true; - } - - *a_fSlope = (fPoints*fSumXY - fSumX*fSumY) / fDivisor; - *a_fOffset = (fSumY - (*a_fSlope)*fSumX) / fPoints; - - return false; - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcMath.h b/thirdparty/etc2comp/EtcMath.h deleted file mode 100644 index c58c9a91bc..0000000000 --- a/thirdparty/etc2comp/EtcMath.h +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -#include <math.h> - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // return true if vertical line - bool Regression(float a_afX[], float a_afY[], unsigned int a_Points, - float *a_fSlope, float *a_fOffset); - - inline float ConvertMSEToPSNR(float a_fMSE) - { - if (a_fMSE == 0.0f) - { - return INFINITY; - } - - return 10.0f * log10f(1.0f / a_fMSE); - } - - -} diff --git a/thirdparty/etc2comp/EtcSortedBlockList.cpp b/thirdparty/etc2comp/EtcSortedBlockList.cpp deleted file mode 100644 index bfa6b7b3fa..0000000000 --- a/thirdparty/etc2comp/EtcSortedBlockList.cpp +++ /dev/null @@ -1,228 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* -EtcSortedBlockList.cpp - -SortedBlockList is a list of 4x4 blocks that can be used by the "effort" system to prioritize -the encoding of the 4x4 blocks. - -The sorting is done with buckets, where each bucket is an indication of how much error each 4x4 block has - -*/ - -#include "EtcConfig.h" -#include "EtcSortedBlockList.h" - -#include "EtcBlock4x4.h" - -#include <stdio.h> -#include <string.h> -#include <assert.h> - -namespace Etc -{ - - // ---------------------------------------------------------------------------------------------------- - // construct an empty list - // - // allocate enough memory to add all of the image's 4x4 blocks later - // allocate enough buckets to sort the blocks - // - SortedBlockList::SortedBlockList(unsigned int a_uiImageBlocks, unsigned int a_uiBuckets) - { - m_uiImageBlocks = a_uiImageBlocks; - m_iBuckets = (int)a_uiBuckets; - - m_uiAddedBlocks = 0; - m_uiSortedBlocks = 0; - m_palinkPool = new Link[m_uiImageBlocks]; - m_pabucket = new Bucket[m_iBuckets]; - m_fMaxError = 0.0f; - - InitBuckets(); - - } - - // ---------------------------------------------------------------------------------------------------- - // - SortedBlockList::~SortedBlockList(void) - { - delete[] m_palinkPool; - delete[] m_pabucket; - } - - // ---------------------------------------------------------------------------------------------------- - // add a 4x4 block to the list - // the 4x4 block will be sorted later - // - void SortedBlockList::AddBlock(Block4x4 *a_pblock) - { - assert(m_uiAddedBlocks < m_uiImageBlocks); - Link *plink = &m_palinkPool[m_uiAddedBlocks++]; - plink->Init(a_pblock); - } - - // ---------------------------------------------------------------------------------------------------- - // sort all of the 4x4 blocks that have been added to the list - // - // first, determine the maximum error, then assign an error range to each bucket - // next, determine which bucket each 4x4 block belongs to based on the 4x4 block's error - // add the 4x4 block to the appropriate bucket - // lastly, walk thru the buckets and add each bucket to a sorted linked list - // - // the resultant sorting is an approximate sorting from most to least error - // - void SortedBlockList::Sort(void) - { - assert(m_uiAddedBlocks == m_uiImageBlocks); - InitBuckets(); - - // find max block error - m_fMaxError = -1.0f; - - for (unsigned int uiLink = 0; uiLink < m_uiAddedBlocks; uiLink++) - { - Link *plinkBlock = &m_palinkPool[uiLink]; - - float fBlockError = plinkBlock->GetBlock()->GetError(); - if (fBlockError > m_fMaxError) - { - m_fMaxError = fBlockError; - } - } - // prevent divide by zero or divide by negative - if (m_fMaxError <= 0.0f) - { - m_fMaxError = 1.0f; - } - //used for debugging - //int numDone = 0; - // put all of the blocks with unfinished encodings into the appropriate bucket - m_uiSortedBlocks = 0; - for (unsigned int uiLink = 0; uiLink < m_uiAddedBlocks; uiLink++) - { - Link *plinkBlock = &m_palinkPool[uiLink]; - - // if the encoding is done, don't add it to the list - if (plinkBlock->GetBlock()->GetEncoding()->IsDone()) - { - //numDone++; - continue; - } - - // calculate the appropriate sort bucket - float fBlockError = plinkBlock->GetBlock()->GetError(); - int iBucket = (int) floorf(m_iBuckets * fBlockError / m_fMaxError); - // clamp to bucket index - iBucket = iBucket < 0 ? 0 : iBucket >= m_iBuckets ? m_iBuckets - 1 : iBucket; - - // add block to bucket - { - Bucket *pbucket = &m_pabucket[iBucket]; - if (pbucket->plinkLast) - { - pbucket->plinkLast->SetNext(plinkBlock); - pbucket->plinkLast = plinkBlock; - } - else - { - pbucket->plinkFirst = pbucket->plinkLast = plinkBlock; - } - plinkBlock->SetNext(nullptr); - } - - m_uiSortedBlocks++; - - if (0) - { - printf("%u: e=%.3f\n", uiLink, fBlockError); - Print(); - printf("\n\n\n"); - } - } - //printf("num blocks already done: %d\n",numDone); - //link the blocks together across buckets - m_plinkFirst = nullptr; - m_plinkLast = nullptr; - for (int iBucket = m_iBuckets - 1; iBucket >= 0; iBucket--) - { - Bucket *pbucket = &m_pabucket[iBucket]; - - if (pbucket->plinkFirst) - { - if (m_plinkFirst == nullptr) - { - m_plinkFirst = pbucket->plinkFirst; - } - else - { - assert(pbucket->plinkLast->GetNext() == nullptr); - m_plinkLast->SetNext(pbucket->plinkFirst); - } - - m_plinkLast = pbucket->plinkLast; - } - } - - - } - - // ---------------------------------------------------------------------------------------------------- - // clear all of the buckets. normally done in preparation for a sort - // - void SortedBlockList::InitBuckets(void) - { - for (int iBucket = 0; iBucket < m_iBuckets; iBucket++) - { - Bucket *pbucket = &m_pabucket[iBucket]; - - pbucket->plinkFirst = 0; - pbucket->plinkLast = 0; - } - } - - // ---------------------------------------------------------------------------------------------------- - // print out the list of sorted 4x4 blocks - // normally used for debugging - // - void SortedBlockList::Print(void) - { - for (int iBucket = m_iBuckets-1; iBucket >= 0; iBucket--) - { - Bucket *pbucket = &m_pabucket[iBucket]; - - unsigned int uiBlocks = 0; - for (Link *plink = pbucket->plinkFirst; plink != nullptr; plink = plink->GetNext() ) - { - uiBlocks++; - - if (plink == pbucket->plinkLast) - { - break; - } - } - - float fBucketError = m_fMaxError * iBucket / m_iBuckets; - float fBucketRMS = sqrtf(fBucketError / (4.0f*16.0f) ); - printf("%3d: e=%.3f rms=%.6f %u\n", iBucket, fBucketError, fBucketRMS, uiBlocks); - } - } - - // ---------------------------------------------------------------------------------------------------- - // - -} // namespace Etc diff --git a/thirdparty/etc2comp/EtcSortedBlockList.h b/thirdparty/etc2comp/EtcSortedBlockList.h deleted file mode 100644 index 960e8adc34..0000000000 --- a/thirdparty/etc2comp/EtcSortedBlockList.h +++ /dev/null @@ -1,124 +0,0 @@ -/* - * Copyright 2015 The Etc2Comp Authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#pragma once - -namespace Etc -{ - class Block4x4; - - class SortedBlockList - { - public: - - class Link - { - public: - - inline void Init(Block4x4 *a_pblock) - { - m_pblock = a_pblock; - m_plinkNext = nullptr; - } - - inline Block4x4 * GetBlock(void) - { - return m_pblock; - } - - inline void SetNext(Link *a_plinkNext) - { - m_plinkNext = a_plinkNext; - } - - inline Link * GetNext(void) - { - return m_plinkNext; - } - - inline Link * Advance(unsigned int a_uiSteps = 1) - { - Link *plink = this; - - for (unsigned int uiStep = 0; uiStep < a_uiSteps; uiStep++) - { - if (plink == nullptr) - { - break; - } - - plink = plink->m_plinkNext; - } - - return plink; - } - - private: - - Block4x4 *m_pblock; - Link *m_plinkNext; - }; - - SortedBlockList(unsigned int a_uiImageBlocks, unsigned int a_uiBuckets); - ~SortedBlockList(void); - - void AddBlock(Block4x4 *a_pblock); - - void Sort(void); - - inline Link * GetLinkToFirstBlock(void) - { - return m_plinkFirst; - } - - inline unsigned int GetNumberOfAddedBlocks(void) - { - return m_uiAddedBlocks; - } - - inline unsigned int GetNumberOfSortedBlocks(void) - { - return m_uiSortedBlocks; - } - - void Print(void); - - private: - - void InitBuckets(void); - - class Bucket - { - public: - Link *plinkFirst; - Link *plinkLast; - }; - - unsigned int m_uiImageBlocks; - int m_iBuckets; - - unsigned int m_uiAddedBlocks; - unsigned int m_uiSortedBlocks; - Link *m_palinkPool; - Bucket *m_pabucket; - float m_fMaxError; - - Link *m_plinkFirst; - Link *m_plinkLast; - - }; - -} // namespace Etc diff --git a/thirdparty/etc2comp/LICENSE b/thirdparty/etc2comp/LICENSE deleted file mode 100644 index d645695673..0000000000 --- a/thirdparty/etc2comp/LICENSE +++ /dev/null @@ -1,202 +0,0 @@ - - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. 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The tool is built with a focus on encoding performance -to reduce the amount of time required to compile asset heavy applications as -well as reduce overall application size. - -This repo provides source code that can be compiled into a binary. The -binary can then be used to convert textures to the ETC2 format. - -Important: This is not an official Google product. It is an experimental -library published as-is. Please see the CONTRIBUTORS.md file for information -about questions or issues. - -## Setup -This project uses [CMake](https://cmake.org/) to generate platform-specific -build files: - - Linux: make files - - OS X: Xcode workspace files - - Microsoft Windows: Visual Studio solution files - - Note: CMake supports other formats, but this doc only provides steps for - one of each platform for brevity. - -Refer to each platform's setup section to setup your environment and build -an Etc2Comp binary. Then skip to the usage section of this page for examples -of how to use the library. - -### Setup for OS X - build tested on this config: - OS X 10.9.5 i7 16GB RAM - Xcode 5.1.1 - cmake 3.2.3 - -Start by downloading and installing the following components if they are not -already installed on your development machine. - - *Xcode* version 5.1.1, or greater - - [CMake](https://cmake.org/download/) version 3.2.3, or greater - -To build the Etc2Comp binary: - 1. Open a *Terminal* window and navigate to the project directory. - 1. Run `mkdir build_xcode` - 1. Run `cd build_xcode` - 1. Run `cmake -G Xcode ../` - 1. Open *Xcode* and import the `build_xcode/EtcTest.xcodeproj` file. - 1. Open the Product menu and choose Build For -> Running. - 1. Once the build succeeds the binary located at `build_xcode/EtcTool/Debug/EtcTool` -can be executed. - -Optional -Xcode EtcTool ‘Run’ preferences -note: if the build_xcode/EtcTest.xcodeproj is manually deleted then some Xcode preferences -will need to be set by hand after cmake is run (these prefs are retained across -cmake updates if the .xcodeproj is not deleted/removed) - -1. Set the active scheme to ‘EtcTool’ -1. Edit the scheme -1. Select option ‘Run EtcTool’, then tab ‘Arguments’. -Add this launch argument: ‘-argfile ../../EtcTool/args.txt’ -1. Select tab ‘Options’ and set a custom working directory to: ‘$(SRCROOT)/Build_Xcode/EtcTool’ - -### SetUp for Windows - -1. Open a *Terminal* window and navigate to the project directory. -1. Run `mkdir build_vs` -1. Run `cd build_vs` -1. Run CMAKE, noting what build version you need, and pointing to the parent directory as the source root; - For VS 2013 : `cmake -G "Visual Studio 12 2013 Win64" ../` - For VS 2015 : `cmake -G "Visual Studio 14 2015 Win64" ../` - NOTE: To see what supported Visual Studio outputs there are, run `cmake -G` -1. open the 'EtcTest' solution -1. make the 'EtcTool' project the start up project -1. (optional) in the project properties, under 'Debugging ->command arguments' -add the argfile textfile thats included in the EtcTool directory. -example: -argfile C:\etc2\EtcTool\Args.txt - -### Setup For Linux -The Linux build was tested on this config: - Ubuntu desktop 14.04 - gcc/g++ 4.8 - cmake 2.8.12.2 - -1. Verify linux has cmake and C++-11 capable g++ installed -1. Open shell -1. Run `mkdir build_linux` -1. Run `cd build_linux` -1. Run `cmake ../` -1. Run `make` -1. navigate to the newly created EtcTool directory `cd EtcTool` -1. run the executable: `./EtcTool -argfile ../../EtcTool/args.txt` - -Skip to the <a href="#usage">Usage</a> section for more information about using the -tool. - -## Usage - -### Command Line Usage -EtcTool can be run from the command line with the following usage: - etctool.exe source_image [options ...] -output encoded_image - -The encoder will use an array of RGBA floats read from the source_image to create -an ETC1 or ETC2 encoded image in encoded_image. The RGBA floats should be in the -range [0:1]. - -Options: - - -analyze <analysis_folder> - -argfile <arg_file> additional command line arguments read from a file - -blockAtHV <H V> encodes a single block that contains the - pixel specified by the H V coordinates - -compare <comparison_image> compares source_image to comparison_image - -effort <amount> number between 0 and 100 to specify the encoding quality - (100 is the highest quality) - -errormetric <error_metric> specify the error metric, the options are - rgba, rgbx, rec709, numeric and normalxyz - -format <etc_format> ETC1, RGB8, SRGB8, RGBA8, SRGB8, RGB8A1, - SRGB8A1 or R11 - -help prints this message - -jobs or -j <thread_count> specifies the number of threads (default=1) - -normalizexyz normalize RGB to have a length of 1 - -verbose or -v shows status information during the encoding - process - -mipmaps or -m <mip_count> sets the maximum number of mipaps to generate (default=1) - -mipwrap or -w <x|y|xy> sets the mipmap filter wrap mode (default=clamp) - -* -analyze will run an analysis of the encoding and place it in folder -"analysis_folder" (e.g. ../analysis/kodim05). within the analysis_folder, a folder -will be created with a name of the current date/time (e.g. 20151204_153306). this -date/time folder is used to compare encodings of the same texture over time. -within the date/time folder is a text file with several encoding stats and a 2x png -image showing the encoding mode for each 4x4 block. - -* -argfile allows additional command line arguments to be placed in a text file - -* -blockAtHV selects the 4x4 pixel subset of the source image at position (H,V). -This is mainly used for debugging - -* -compare compares the source image to the created encoded image. The encoding -will dictate what error analysis is used in the comparison. - -* -effort uses an "amount" between 0 and 100 to determine how much additional effort -to apply during the encoding. - -* -errormetric selects the fitting algorithm used by the encoder. "rgba" calculates -RMS error using RGB components that are weighted by A. "rgbx" calculates RMS error -using RGBA components, where A is treated as an additional data channel, instead of -as alpha. "rec709" is similar to "rgba", except the RGB components are also weighted -according to Rec709. "numeric" calculates RMS error using unweighted RGBA components. -"normalize" calculates error based on dot product and vector length for RGB and RMS -error for A. - -* -help prints out the usage message - -* -jobs enables multi-threading to speed up image encoding - -* -normalizexyz normalizes the source RGB to have a length of 1. - -* -verbose shows information on the current encoding process. It will then display the -PSNR and time time it took to encode the image. - -* -mipmaps takes an argument that specifies how many mipmaps to generate from the -source image. The mipmaps are generated with a lanczos3 filter using edge clamping. -If the mipmaps option is not specified no mipmaps are created. - -* -mipwrap takes an argument that specifies the mipmap filter wrap mode. The options -are "x", "y" and "xy" which specify wrapping in x only, y only or x and y respectively. -The default options are clamping in both x and y. - -Note: Path names can use slashes or backslashes. The tool will convert the -slashes to the appropriate polarity for the current platform. - - -## API - -The library supports two different APIs - a C-like API that is not heavily -class-based and a class-based API. - -main() in EtcTool.cpp contains an example of both APIs. - -The Encode() method now returns an EncodingStatus that contains bit flags for -reporting various warnings and flags encountered when encoding. - - -## Copyright -Copyright 2015 Etc2Comp Authors. - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. diff --git a/thirdparty/etc2comp/patches/fix-rgba8-max-channels.patch b/thirdparty/etc2comp/patches/fix-rgba8-max-channels.patch deleted file mode 100644 index ea9b5640b6..0000000000 --- a/thirdparty/etc2comp/patches/fix-rgba8-max-channels.patch +++ /dev/null @@ -1,224 +0,0 @@ -diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp -index 5656556db9..5c7ebed788 100644 ---- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp -+++ b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8.cpp -@@ -508,7 +508,7 @@ namespace Etc - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { -- iMinRed1 = 15; -+ iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; -@@ -519,7 +519,7 @@ namespace Etc - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { -- iMinGreen1 = 15; -+ iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; -@@ -530,7 +530,7 @@ namespace Etc - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { -- iMinBlue1 = 15; -+ iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); -@@ -545,7 +545,7 @@ namespace Etc - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { -- iMinRed2 = 15; -+ iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; -@@ -556,7 +556,7 @@ namespace Etc - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { -- iMinGreen2 = 15; -+ iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; -@@ -567,7 +567,7 @@ namespace Etc - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { -- iMinBlue2 = 15; -+ iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) -@@ -761,7 +761,7 @@ namespace Etc - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { -- iMinRed1 = 15; -+ iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; -@@ -772,7 +772,7 @@ namespace Etc - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { -- iMinGreen1 = 15; -+ iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; -@@ -783,7 +783,7 @@ namespace Etc - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { -- iMinBlue1 = 15; -+ iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); -@@ -798,7 +798,7 @@ namespace Etc - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { -- iMinRed2 = 15; -+ iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; -@@ -809,7 +809,7 @@ namespace Etc - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { -- iMinGreen2 = 15; -+ iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; -@@ -820,7 +820,7 @@ namespace Etc - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { -- iMinBlue2 = 15; -+ iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) -diff --git a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp -index ba2b42fb05..b94b64e68c 100644 ---- a/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp -+++ b/thirdparty/etc2comp/EtcBlock4x4Encoding_RGB8A1.cpp -@@ -847,7 +847,7 @@ namespace Etc - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { -- iMinRed1 = 15; -+ iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; -@@ -858,7 +858,7 @@ namespace Etc - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { -- iMinGreen1 = 15; -+ iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; -@@ -869,7 +869,7 @@ namespace Etc - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { -- iMinBlue1 = 15; -+ iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); -@@ -884,7 +884,7 @@ namespace Etc - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { -- iMinRed2 = 15; -+ iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; -@@ -895,7 +895,7 @@ namespace Etc - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { -- iMinGreen2 = 15; -+ iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; -@@ -906,7 +906,7 @@ namespace Etc - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { -- iMinBlue2 = 15; -+ iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) -@@ -1108,7 +1108,7 @@ namespace Etc - int iMaxRed1 = iColor1Red + (int)a_uiRadius; - if (iMaxRed1 > 15) - { -- iMinRed1 = 15; -+ iMaxRed1 = 15; - } - - int iMinGreen1 = iColor1Green - (int)a_uiRadius; -@@ -1119,7 +1119,7 @@ namespace Etc - int iMaxGreen1 = iColor1Green + (int)a_uiRadius; - if (iMaxGreen1 > 15) - { -- iMinGreen1 = 15; -+ iMaxGreen1 = 15; - } - - int iMinBlue1 = iColor1Blue - (int)a_uiRadius; -@@ -1130,7 +1130,7 @@ namespace Etc - int iMaxBlue1 = iColor1Blue + (int)a_uiRadius; - if (iMaxBlue1 > 15) - { -- iMinBlue1 = 15; -+ iMaxBlue1 = 15; - } - - int iColor2Red = m_frgbaOriginalColor2_TAndH.IntRed(15.0f); -@@ -1145,7 +1145,7 @@ namespace Etc - int iMaxRed2 = iColor2Red + (int)a_uiRadius; - if (iMaxRed2 > 15) - { -- iMinRed2 = 15; -+ iMaxRed2 = 15; - } - - int iMinGreen2 = iColor2Green - (int)a_uiRadius; -@@ -1156,7 +1156,7 @@ namespace Etc - int iMaxGreen2 = iColor2Green + (int)a_uiRadius; - if (iMaxGreen2 > 15) - { -- iMinGreen2 = 15; -+ iMaxGreen2 = 15; - } - - int iMinBlue2 = iColor2Blue - (int)a_uiRadius; -@@ -1167,7 +1167,7 @@ namespace Etc - int iMaxBlue2 = iColor2Blue + (int)a_uiRadius; - if (iMaxBlue2 > 15) - { -- iMinBlue2 = 15; -+ iMaxBlue2 = 15; - } - - for (unsigned int uiDistance = 0; uiDistance < TH_DISTANCES; uiDistance++) |