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path: root/thirdparty/pvrtccompressor/PvrTcEncoder.cpp
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Diffstat (limited to 'thirdparty/pvrtccompressor/PvrTcEncoder.cpp')
-rw-r--r--thirdparty/pvrtccompressor/PvrTcEncoder.cpp474
1 files changed, 0 insertions, 474 deletions
diff --git a/thirdparty/pvrtccompressor/PvrTcEncoder.cpp b/thirdparty/pvrtccompressor/PvrTcEncoder.cpp
deleted file mode 100644
index 587b1320f1..0000000000
--- a/thirdparty/pvrtccompressor/PvrTcEncoder.cpp
+++ /dev/null
@@ -1,474 +0,0 @@
-//============================================================================
-
-#include "PvrTcEncoder.h"
-#include "AlphaBitmap.h"
-#include "PvrTcPacket.h"
-#include "RgbBitmap.h"
-#include "RgbaBitmap.h"
-#include "MortonTable.h"
-#include "BitUtility.h"
-#include "Interval.h"
-#include <assert.h>
-#include <math.h>
-#include <stdint.h>
-
-//============================================================================
-
-using namespace Javelin;
-using Data::MORTON_TABLE;
-
-//============================================================================
-
-static const unsigned char MODULATION_LUT[16] =
-{
- 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3
-};
-
-//============================================================================
-
-inline unsigned PvrTcEncoder::GetMortonNumber(int x, int y)
-{
- return MORTON_TABLE[x >> 8] << 17 | MORTON_TABLE[y >> 8] << 16 | MORTON_TABLE[x & 0xFF] << 1 | MORTON_TABLE[y & 0xFF];
-}
-
-//============================================================================
-
-void PvrTcEncoder::EncodeAlpha2Bpp(void* result, const AlphaBitmap& bitmap)
-{
- int size = bitmap.GetBitmapWidth();
- assert(size == bitmap.GetBitmapHeight());
- assert(BitUtility::IsPowerOf2(size));
-
- // Blocks in each dimension.
- int xBlocks = size/8;
- int yBlocks = size/4;
-
- const unsigned char* bitmapData = bitmap.GetRawData();
-
- PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
- for(int y = 0; y < yBlocks; ++y)
- {
- for(int x = 0; x < xBlocks; ++x)
- {
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->usePunchthroughAlpha = 0;
- packet->colorAIsOpaque = 0;
- packet->colorA = 0x7ff; // White, with 0 alpha
- packet->colorBIsOpaque = 1;
- packet->colorB = 0x7fff; // White with full alpha
-
- const unsigned char* blockBitmapData = &bitmapData[y*4*size + x*8];
-
- uint32_t modulationData = 0;
- for(int py = 0; py < 4; ++py)
- {
- const unsigned char* rowBitmapData = blockBitmapData;
- for(int px = 0; px < 8; ++px)
- {
- unsigned char pixel = *rowBitmapData++;
- modulationData = BitUtility::RotateRight(modulationData | (pixel >> 7), 1);
- }
- blockBitmapData += size;
- }
- packet->modulationData = modulationData;
- }
- }
-}
-
-void PvrTcEncoder::EncodeAlpha4Bpp(void* result, const AlphaBitmap& bitmap)
-{
- int size = bitmap.GetBitmapWidth();
- assert(size == bitmap.GetBitmapHeight());
- assert(BitUtility::IsPowerOf2(size));
-
- // Blocks in each dimension.
- int blocks = size/4;
-
- const unsigned char* bitmapData = bitmap.GetRawData();
-
- PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->usePunchthroughAlpha = 0;
- packet->colorAIsOpaque = 0;
- packet->colorA = 0x7ff; // White, with 0 alpha
- packet->colorBIsOpaque = 1;
- packet->colorB = 0x7fff; // White with full alpha
-
- const unsigned char* blockBitmapData = &bitmapData[(y*size + x)*4];
-
- uint32_t modulationData = 0;
- for(int py = 0; py < 4; ++py)
- {
- const unsigned char* rowBitmapData = blockBitmapData;
- for(int px = 0; px < 4; ++px)
- {
- unsigned char pixel = *rowBitmapData++;
- modulationData = BitUtility::RotateRight(modulationData | MODULATION_LUT[pixel>>4], 2);
- }
- blockBitmapData += size;
- }
- packet->modulationData = modulationData;
- }
- }
-}
-
-//============================================================================
-
-typedef Interval<ColorRgb<unsigned char> > ColorRgbBoundingBox;
-
-static void CalculateBoundingBox(ColorRgbBoundingBox& cbb, const RgbBitmap& bitmap, int blockX, int blockY)
-{
- int size = bitmap.GetBitmapWidth();
- const ColorRgb<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
-
- cbb.min = data[0];
- cbb.max = data[0];
- cbb |= data[1];
- cbb |= data[2];
- cbb |= data[3];
-
- cbb |= data[size];
- cbb |= data[size+1];
- cbb |= data[size+2];
- cbb |= data[size+3];
-
- cbb |= data[2*size];
- cbb |= data[2*size+1];
- cbb |= data[2*size+2];
- cbb |= data[2*size+3];
-
- cbb |= data[3*size];
- cbb |= data[3*size+1];
- cbb |= data[3*size+2];
- cbb |= data[3*size+3];
-}
-
-void PvrTcEncoder::EncodeRgb4Bpp(void* result, const RgbBitmap& bitmap)
-{
- assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
- assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
- const int size = bitmap.GetBitmapWidth();
- const int blocks = size / 4;
- const int blockMask = blocks-1;
-
- PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- ColorRgbBoundingBox cbb;
- CalculateBoundingBox(cbb, bitmap, x, y);
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->usePunchthroughAlpha = 0;
- packet->SetColorA(cbb.min);
- packet->SetColorB(cbb.max);
- }
- }
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
- const ColorRgb<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
-
- uint32_t modulationData = 0;
-
- for(int py = 0; py < 4; ++py)
- {
- const int yOffset = (py < 2) ? -1 : 0;
- const int y0 = (y + yOffset) & blockMask;
- const int y1 = (y0+1) & blockMask;
-
- for(int px = 0; px < 4; ++px)
- {
- const int xOffset = (px < 2) ? -1 : 0;
- const int x0 = (x + xOffset) & blockMask;
- const int x1 = (x0+1) & blockMask;
-
- const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
- const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
- const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
- const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
-
- ColorRgb<int> ca = p0->GetColorRgbA() * (*factor)[0] +
- p1->GetColorRgbA() * (*factor)[1] +
- p2->GetColorRgbA() * (*factor)[2] +
- p3->GetColorRgbA() * (*factor)[3];
-
- ColorRgb<int> cb = p0->GetColorRgbB() * (*factor)[0] +
- p1->GetColorRgbB() * (*factor)[1] +
- p2->GetColorRgbB() * (*factor)[2] +
- p3->GetColorRgbB() * (*factor)[3];
-
- const ColorRgb<unsigned char>& pixel = data[py*size + px];
- ColorRgb<int> d = cb - ca;
- ColorRgb<int> p;
- p.r=pixel.r*16;
- p.g=pixel.g*16;
- p.b=pixel.b*16;
- ColorRgb<int> v = p - ca;
-
- // PVRTC uses weightings of 0, 3/8, 5/8 and 1
- // The boundaries for these are 3/16, 1/2 (=8/16), 13/16
- int projection = (v % d) * 16;
- int lengthSquared = d % d;
- if(projection > 3*lengthSquared) modulationData++;
- if(projection > 8*lengthSquared) modulationData++;
- if(projection > 13*lengthSquared) modulationData++;
-
- modulationData = BitUtility::RotateRight(modulationData, 2);
-
- factor++;
- }
- }
-
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->modulationData = modulationData;
- }
- }
-}
-
-//============================================================================
-
-static void CalculateBoundingBox(ColorRgbBoundingBox& cbb, const RgbaBitmap& bitmap, int blockX, int blockY)
-{
- int size = bitmap.GetBitmapWidth();
- const ColorRgba<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
-
- cbb.min = data[0];
- cbb.max = data[0];
-
- cbb |= data[1];
- cbb |= data[2];
- cbb |= data[3];
-
- cbb |= data[size];
- cbb |= data[size+1];
- cbb |= data[size+2];
- cbb |= data[size+3];
-
- cbb |= data[2*size];
- cbb |= data[2*size+1];
- cbb |= data[2*size+2];
- cbb |= data[2*size+3];
-
- cbb |= data[3*size];
- cbb |= data[3*size+1];
- cbb |= data[3*size+2];
- cbb |= data[3*size+3];
-}
-
-void PvrTcEncoder::EncodeRgb4Bpp(void* result, const RgbaBitmap& bitmap)
-{
- assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
- assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
- const int size = bitmap.GetBitmapWidth();
- const int blocks = size / 4;
- const int blockMask = blocks-1;
-
- PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- ColorRgbBoundingBox cbb;
- CalculateBoundingBox(cbb, bitmap, x, y);
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->usePunchthroughAlpha = 0;
- packet->SetColorA(cbb.min);
- packet->SetColorB(cbb.max);
- }
- }
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
- const ColorRgba<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
-
- uint32_t modulationData = 0;
-
- for(int py = 0; py < 4; ++py)
- {
- const int yOffset = (py < 2) ? -1 : 0;
- const int y0 = (y + yOffset) & blockMask;
- const int y1 = (y0+1) & blockMask;
-
- for(int px = 0; px < 4; ++px)
- {
- const int xOffset = (px < 2) ? -1 : 0;
- const int x0 = (x + xOffset) & blockMask;
- const int x1 = (x0+1) & blockMask;
-
- const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
- const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
- const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
- const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
-
- ColorRgb<int> ca = p0->GetColorRgbA() * (*factor)[0] +
- p1->GetColorRgbA() * (*factor)[1] +
- p2->GetColorRgbA() * (*factor)[2] +
- p3->GetColorRgbA() * (*factor)[3];
-
- ColorRgb<int> cb = p0->GetColorRgbB() * (*factor)[0] +
- p1->GetColorRgbB() * (*factor)[1] +
- p2->GetColorRgbB() * (*factor)[2] +
- p3->GetColorRgbB() * (*factor)[3];
-
- const ColorRgb<unsigned char>& pixel = data[py*size + px];
- ColorRgb<int> d = cb - ca;
- ColorRgb<int> p;
- p.r=pixel.r*16;
- p.g=pixel.g*16;
- p.b=pixel.b*16;
- ColorRgb<int> v = p - ca;
-
- // PVRTC uses weightings of 0, 3/8, 5/8 and 1
- // The boundaries for these are 3/16, 1/2 (=8/16), 13/16
- int projection = (v % d) * 16;
- int lengthSquared = d % d;
- if(projection > 3*lengthSquared) modulationData++;
- if(projection > 8*lengthSquared) modulationData++;
- if(projection > 13*lengthSquared) modulationData++;
-
- modulationData = BitUtility::RotateRight(modulationData, 2);
-
- factor++;
- }
- }
-
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->modulationData = modulationData;
- }
- }
-}
-
-//============================================================================
-
-typedef Interval<ColorRgba<unsigned char> > ColorRgbaBoundingBox;
-
-static void CalculateBoundingBox(ColorRgbaBoundingBox& cbb, const RgbaBitmap& bitmap, int blockX, int blockY)
-{
- int size = bitmap.GetBitmapWidth();
- const ColorRgba<unsigned char>* data = bitmap.GetData() + blockY * 4 * size + blockX * 4;
-
- cbb.min = data[0];
- cbb.max = data[0];
-
- cbb |= data[1];
- cbb |= data[2];
- cbb |= data[3];
-
- cbb |= data[size];
- cbb |= data[size+1];
- cbb |= data[size+2];
- cbb |= data[size+3];
-
- cbb |= data[2*size];
- cbb |= data[2*size+1];
- cbb |= data[2*size+2];
- cbb |= data[2*size+3];
-
- cbb |= data[3*size];
- cbb |= data[3*size+1];
- cbb |= data[3*size+2];
- cbb |= data[3*size+3];
-}
-
-void PvrTcEncoder::EncodeRgba4Bpp(void* result, const RgbaBitmap& bitmap)
-{
- assert(bitmap.GetBitmapWidth() == bitmap.GetBitmapHeight());
- assert(BitUtility::IsPowerOf2(bitmap.GetBitmapWidth()));
- const int size = bitmap.GetBitmapWidth();
- const int blocks = size / 4;
- const int blockMask = blocks-1;
-
- PvrTcPacket* packets = static_cast<PvrTcPacket*>(result);
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- ColorRgbaBoundingBox cbb;
- CalculateBoundingBox(cbb, bitmap, x, y);
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->usePunchthroughAlpha = 0;
- packet->SetColorA(cbb.min);
- packet->SetColorB(cbb.max);
- }
- }
-
- for(int y = 0; y < blocks; ++y)
- {
- for(int x = 0; x < blocks; ++x)
- {
- const unsigned char (*factor)[4] = PvrTcPacket::BILINEAR_FACTORS;
- const ColorRgba<unsigned char>* data = bitmap.GetData() + y * 4 * size + x * 4;
-
- uint32_t modulationData = 0;
-
- for(int py = 0; py < 4; ++py)
- {
- const int yOffset = (py < 2) ? -1 : 0;
- const int y0 = (y + yOffset) & blockMask;
- const int y1 = (y0+1) & blockMask;
-
- for(int px = 0; px < 4; ++px)
- {
- const int xOffset = (px < 2) ? -1 : 0;
- const int x0 = (x + xOffset) & blockMask;
- const int x1 = (x0+1) & blockMask;
-
- const PvrTcPacket* p0 = packets + GetMortonNumber(x0, y0);
- const PvrTcPacket* p1 = packets + GetMortonNumber(x1, y0);
- const PvrTcPacket* p2 = packets + GetMortonNumber(x0, y1);
- const PvrTcPacket* p3 = packets + GetMortonNumber(x1, y1);
-
- ColorRgba<int> ca = p0->GetColorRgbaA() * (*factor)[0] +
- p1->GetColorRgbaA() * (*factor)[1] +
- p2->GetColorRgbaA() * (*factor)[2] +
- p3->GetColorRgbaA() * (*factor)[3];
-
- ColorRgba<int> cb = p0->GetColorRgbaB() * (*factor)[0] +
- p1->GetColorRgbaB() * (*factor)[1] +
- p2->GetColorRgbaB() * (*factor)[2] +
- p3->GetColorRgbaB() * (*factor)[3];
-
- const ColorRgba<unsigned char>& pixel = data[py*size + px];
- ColorRgba<int> d = cb - ca;
- ColorRgba<int> p;
- p.r=pixel.r*16;
- p.g=pixel.g*16;
- p.b=pixel.b*16;
- p.a=pixel.a*16;
- ColorRgba<int> v = p - ca;
-
- // PVRTC uses weightings of 0, 3/8, 5/8 and 1
- // The boundaries for these are 3/16, 1/2 (=8/16), 13/16
- int projection = (v % d) * 16;
- int lengthSquared = d % d;
- if(projection > 3*lengthSquared) modulationData++;
- if(projection > 8*lengthSquared) modulationData++;
- if(projection > 13*lengthSquared) modulationData++;
-
- modulationData = BitUtility::RotateRight(modulationData, 2);
-
- factor++;
- }
- }
-
- PvrTcPacket* packet = packets + GetMortonNumber(x, y);
- packet->modulationData = modulationData;
- }
- }
-}
-
-//============================================================================
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 05:28:11 +0000