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Diffstat (limited to 'thirdparty/cvtt/ConvectionKernels.cpp')
| -rw-r--r-- | thirdparty/cvtt/ConvectionKernels.cpp | 7586 |
1 files changed, 7586 insertions, 0 deletions
diff --git a/thirdparty/cvtt/ConvectionKernels.cpp b/thirdparty/cvtt/ConvectionKernels.cpp new file mode 100644 index 0000000000..8d379344e1 --- /dev/null +++ b/thirdparty/cvtt/ConvectionKernels.cpp @@ -0,0 +1,7586 @@ +/* +Convection Texture Tools +Copyright (c) 2018 Eric Lasota + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject +to the following conditions: + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +------------------------------------------------------------------------------------- + +Portions based on DirectX Texture Library (DirectXTex) + +Copyright (c) Microsoft Corporation. All rights reserved. +Licensed under the MIT License. + +http://go.microsoft.com/fwlink/?LinkId=248926 +*/ +#include "ConvectionKernels.h" +#include "ConvectionKernels_BC7_SingleColor.h" + +#if (defined(_M_IX86_FP) && _M_IX86_FP >= 2) || defined(_M_X64) || defined(__SSE2__) +#define CVTT_USE_SSE2 +#endif + +#ifdef CVTT_USE_SSE2 +#include <emmintrin.h> +#endif + +#include <float.h> +#include <assert.h> +#include <string.h> +#include <algorithm> +#include <math.h> + +#define UNREFERENCED_PARAMETER(n) ((void)n) + +namespace cvtt +{ +#ifdef CVTT_USE_SSE2 + // SSE2 version + struct ParallelMath + { + typedef uint16_t ScalarUInt16; + typedef int16_t ScalarSInt16; + + template<unsigned int TRoundingMode> + struct RoundForScope + { + unsigned int m_oldCSR; + + RoundForScope() + { + m_oldCSR = _mm_getcsr(); + _mm_setcsr((m_oldCSR & ~_MM_ROUND_MASK) | (TRoundingMode)); + } + + ~RoundForScope() + { + _mm_setcsr(m_oldCSR); + } + }; + + struct RoundTowardZeroForScope : RoundForScope<_MM_ROUND_TOWARD_ZERO> + { + }; + + struct RoundTowardNearestForScope : RoundForScope<_MM_ROUND_NEAREST> + { + }; + + struct RoundUpForScope : RoundForScope<_MM_ROUND_UP> + { + }; + + struct RoundDownForScope : RoundForScope<_MM_ROUND_DOWN> + { + }; + + static const int ParallelSize = 8; + + enum Int16Subtype + { + IntSubtype_Signed, + IntSubtype_UnsignedFull, + IntSubtype_UnsignedTruncated, + IntSubtype_Abstract, + }; + + template<int TSubtype> + struct VInt16 + { + __m128i m_value; + + inline VInt16 operator+(int16_t other) const + { + VInt16 result; + result.m_value = _mm_add_epi16(m_value, _mm_set1_epi16(static_cast<int16_t>(other))); + return result; + } + + inline VInt16 operator+(const VInt16 &other) const + { + VInt16 result; + result.m_value = _mm_add_epi16(m_value, other.m_value); + return result; + } + + inline VInt16 operator|(const VInt16 &other) const + { + VInt16 result; + result.m_value = _mm_or_si128(m_value, other.m_value); + return result; + } + + inline VInt16 operator&(const VInt16 &other) const + { + VInt16 result; + result.m_value = _mm_and_si128(m_value, other.m_value); + return result; + } + + inline VInt16 operator-(const VInt16 &other) const + { + VInt16 result; + result.m_value = _mm_sub_epi16(m_value, other.m_value); + return result; + } + + inline VInt16 operator<<(int bits) const + { + VInt16 result; + result.m_value = _mm_slli_epi16(m_value, bits); + return result; + } + }; + + typedef VInt16<IntSubtype_Signed> SInt16; + typedef VInt16<IntSubtype_UnsignedFull> UInt16; + typedef VInt16<IntSubtype_UnsignedTruncated> UInt15; + typedef VInt16<IntSubtype_Abstract> AInt16; + + template<int TSubtype> + struct VInt32 + { + __m128i m_values[2]; + + inline VInt32 operator+(const VInt32& other) const + { + VInt32 result; + result.m_values[0] = _mm_add_epi32(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_add_epi32(m_values[1], other.m_values[1]); + return result; + } + + inline VInt32 operator-(const VInt32& other) const + { + VInt32 result; + result.m_values[0] = _mm_sub_epi32(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_sub_epi32(m_values[1], other.m_values[1]); + return result; + } + + inline VInt32 operator<<(const int other) const + { + VInt32 result; + result.m_values[0] = _mm_slli_epi32(m_values[0], other); + result.m_values[1] = _mm_slli_epi32(m_values[1], other); + return result; + } + }; + + typedef VInt32<IntSubtype_Signed> SInt32; + typedef VInt32<IntSubtype_UnsignedTruncated> UInt31; + typedef VInt32<IntSubtype_UnsignedFull> UInt32; + typedef VInt32<IntSubtype_Abstract> AInt32; + + template<class TTargetType> + struct LosslessCast + { +#ifdef CVTT_PERMIT_ALIASING + template<int TSrcSubtype> + static const TTargetType& Cast(const VInt32<TSrcSubtype> &src) + { + return reinterpret_cast<VInt32<TSubtype>&>(src); + } + + template<int TSrcSubtype> + static const TTargetType& Cast(const VInt16<TSrcSubtype> &src) + { + return reinterpret_cast<VInt16<TSubtype>&>(src); + } +#else + template<int TSrcSubtype> + static TTargetType Cast(const VInt32<TSrcSubtype> &src) + { + TTargetType result; + result.m_values[0] = src.m_values[0]; + result.m_values[1] = src.m_values[1]; + return result; + } + + template<int TSrcSubtype> + static TTargetType Cast(const VInt16<TSrcSubtype> &src) + { + TTargetType result; + result.m_value = src.m_value; + return result; + } +#endif + }; + + struct Int64 + { + __m128i m_values[4]; + }; + + struct Float + { + __m128 m_values[2]; + + inline Float operator+(const Float &other) const + { + Float result; + result.m_values[0] = _mm_add_ps(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_add_ps(m_values[1], other.m_values[1]); + return result; + } + + inline Float operator+(float other) const + { + Float result; + result.m_values[0] = _mm_add_ps(m_values[0], _mm_set1_ps(other)); + result.m_values[1] = _mm_add_ps(m_values[1], _mm_set1_ps(other)); + return result; + } + + inline Float operator-(const Float& other) const + { + Float result; + result.m_values[0] = _mm_sub_ps(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_sub_ps(m_values[1], other.m_values[1]); + return result; + } + + inline Float operator-() const + { + Float result; + result.m_values[0] = _mm_sub_ps(_mm_setzero_ps(), m_values[0]); + result.m_values[1] = _mm_sub_ps(_mm_setzero_ps(), m_values[1]); + return result; + } + + inline Float operator*(const Float& other) const + { + Float result; + result.m_values[0] = _mm_mul_ps(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_mul_ps(m_values[1], other.m_values[1]); + return result; + } + + inline Float operator*(float other) const + { + Float result; + result.m_values[0] = _mm_mul_ps(m_values[0], _mm_set1_ps(other)); + result.m_values[1] = _mm_mul_ps(m_values[1], _mm_set1_ps(other)); + return result; + } + + inline Float operator/(const Float &other) const + { + Float result; + result.m_values[0] = _mm_div_ps(m_values[0], other.m_values[0]); + result.m_values[1] = _mm_div_ps(m_values[1], other.m_values[1]); + return result; + } + + inline Float operator/(float other) const + { + Float result; + result.m_values[0] = _mm_div_ps(m_values[0], _mm_set1_ps(other)); + result.m_values[1] = _mm_div_ps(m_values[1], _mm_set1_ps(other)); + return result; + } + }; + + struct Int16CompFlag + { + __m128i m_value; + + inline Int16CompFlag operator&(const Int16CompFlag &other) const + { + Int16CompFlag result; + result.m_value = _mm_and_si128(m_value, other.m_value); + return result; + } + + inline Int16CompFlag operator|(const Int16CompFlag &other) const + { + Int16CompFlag result; + result.m_value = _mm_or_si128(m_value, other.m_value); + return result; + } + }; + + struct FloatCompFlag + { + __m128 m_values[2]; + }; + + template<int TSubtype> + static VInt16<TSubtype> AbstractAdd(const VInt16<TSubtype> &a, const VInt16<TSubtype> &b) + { + VInt16<TSubtype> result; + result.m_value = _mm_add_epi16(a.m_value, b.m_value); + return result; + } + + template<int TSubtype> + static VInt16<TSubtype> AbstractSubtract(const VInt16<TSubtype> &a, const VInt16<TSubtype> &b) + { + VInt16<TSubtype> result; + result.m_value = _mm_sub_epi16(a.m_value, b.m_value); + return result; + } + + static Float Select(const FloatCompFlag &flag, const Float &a, const Float &b) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_or_ps(_mm_and_ps(flag.m_values[i], a.m_values[i]), _mm_andnot_ps(flag.m_values[i], b.m_values[i])); + return result; + } + + template<int TSubtype> + static VInt16<TSubtype> Select(const Int16CompFlag &flag, const VInt16<TSubtype> &a, const VInt16<TSubtype> &b) + { + VInt16<TSubtype> result; + result.m_value = _mm_or_si128(_mm_and_si128(flag.m_value, a.m_value), _mm_andnot_si128(flag.m_value, b.m_value)); + return result; + } + + template<int TSubtype> + static VInt16<TSubtype> SelectOrZero(const Int16CompFlag &flag, const VInt16<TSubtype> &a) + { + VInt16<TSubtype> result; + result.m_value = _mm_and_si128(flag.m_value, a.m_value); + return result; + } + + template<int TSubtype> + static void ConditionalSet(VInt16<TSubtype> &dest, const Int16CompFlag &flag, const VInt16<TSubtype> &src) + { + dest.m_value = _mm_or_si128(_mm_andnot_si128(flag.m_value, dest.m_value), _mm_and_si128(flag.m_value, src.m_value)); + } + + static SInt16 ConditionalNegate(const Int16CompFlag &flag, const SInt16 &v) + { + SInt16 result; + result.m_value = _mm_add_epi16(_mm_xor_si128(flag.m_value, v.m_value), _mm_srli_epi16(flag.m_value, 15)); + return result; + } + + template<int TSubtype> + static void NotConditionalSet(VInt16<TSubtype> &dest, const Int16CompFlag &flag, const VInt16<TSubtype> &src) + { + dest.m_value = _mm_or_si128(_mm_and_si128(flag.m_value, dest.m_value), _mm_andnot_si128(flag.m_value, src.m_value)); + } + + static void ConditionalSet(Float &dest, const FloatCompFlag &flag, const Float &src) + { + for (int i = 0; i < 2; i++) + dest.m_values[i] = _mm_or_ps(_mm_andnot_ps(flag.m_values[i], dest.m_values[i]), _mm_and_ps(flag.m_values[i], src.m_values[i])); + } + + static void NotConditionalSet(Float &dest, const FloatCompFlag &flag, const Float &src) + { + for (int i = 0; i < 2; i++) + dest.m_values[i] = _mm_or_ps(_mm_and_ps(flag.m_values[i], dest.m_values[i]), _mm_andnot_ps(flag.m_values[i], src.m_values[i])); + } + + static void MakeSafeDenominator(Float& v) + { + ConditionalSet(v, Equal(v, MakeFloatZero()), MakeFloat(1.0f)); + } + + static SInt16 TruncateToPrecisionSigned(const SInt16 &v, int precision) + { + int lostBits = 16 - precision; + if (lostBits == 0) + return v; + + SInt16 result; + result.m_value = _mm_srai_epi16(_mm_slli_epi16(v.m_value, lostBits), lostBits); + return result; + } + + static UInt16 TruncateToPrecisionUnsigned(const UInt16 &v, int precision) + { + int lostBits = 16 - precision; + if (lostBits == 0) + return v; + + UInt16 result; + result.m_value = _mm_srli_epi16(_mm_slli_epi16(v.m_value, lostBits), lostBits); + return result; + } + + static UInt16 Min(const UInt16 &a, const UInt16 &b) + { + __m128i bitFlip = _mm_set1_epi16(-32768); + + UInt16 result; + result.m_value = _mm_xor_si128(_mm_min_epi16(_mm_xor_si128(a.m_value, bitFlip), _mm_xor_si128(b.m_value, bitFlip)), bitFlip); + return result; + } + + static SInt16 Min(const SInt16 &a, const SInt16 &b) + { + SInt16 result; + result.m_value = _mm_min_epi16(a.m_value, b.m_value); + return result; + } + + static UInt15 Min(const UInt15 &a, const UInt15 &b) + { + UInt15 result; + result.m_value = _mm_min_epi16(a.m_value, b.m_value); + return result; + } + + static Float Min(const Float &a, const Float &b) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_min_ps(a.m_values[i], b.m_values[i]); + return result; + } + + static UInt16 Max(const UInt16 &a, const UInt16 &b) + { + __m128i bitFlip = _mm_set1_epi16(-32768); + + UInt16 result; + result.m_value = _mm_xor_si128(_mm_max_epi16(_mm_xor_si128(a.m_value, bitFlip), _mm_xor_si128(b.m_value, bitFlip)), bitFlip); + return result; + } + + static SInt16 Max(const SInt16 &a, const SInt16 &b) + { + SInt16 result; + result.m_value = _mm_max_epi16(a.m_value, b.m_value); + return result; + } + + static UInt15 Max(const UInt15 &a, const UInt15 &b) + { + UInt15 result; + result.m_value = _mm_max_epi16(a.m_value, b.m_value); + return result; + } + + static Float Max(const Float &a, const Float &b) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_max_ps(a.m_values[i], b.m_values[i]); + return result; + } + + static Float Clamp(const Float &v, float min, float max) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_max_ps(_mm_min_ps(v.m_values[i], _mm_set1_ps(max)), _mm_set1_ps(min)); + return result; + } + + static Float Reciprocal(const Float &v) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_rcp_ps(v.m_values[i]); + return result; + } + + static void ConvertLDRInputs(const PixelBlockU8* inputBlocks, int pxOffset, int channel, UInt15 &chOut) + { + int16_t values[8]; + for (int i = 0; i < 8; i++) + values[i] = inputBlocks[i].m_pixels[pxOffset][channel]; + + chOut.m_value = _mm_set_epi16(values[7], values[6], values[5], values[4], values[3], values[2], values[1], values[0]); + } + + static void ConvertHDRInputs(const PixelBlockF16* inputBlocks, int pxOffset, int channel, SInt16 &chOut) + { + int16_t values[8]; + for (int i = 0; i < 8; i++) + values[i] = inputBlocks[i].m_pixels[pxOffset][channel]; + + chOut.m_value = _mm_set_epi16(values[7], values[6], values[5], values[4], values[3], values[2], values[1], values[0]); + } + + static Float MakeFloat(float v) + { + Float f; + f.m_values[0] = f.m_values[1] = _mm_set1_ps(v); + return f; + } + + static Float MakeFloatZero() + { + Float f; + f.m_values[0] = f.m_values[1] = _mm_setzero_ps(); + return f; + } + + static UInt16 MakeUInt16(uint16_t v) + { + UInt16 result; + result.m_value = _mm_set1_epi16(static_cast<short>(v)); + return result; + } + + static SInt16 MakeSInt16(int16_t v) + { + SInt16 result; + result.m_value = _mm_set1_epi16(static_cast<short>(v)); + return result; + } + + static AInt16 MakeAInt16(int16_t v) + { + AInt16 result; + result.m_value = _mm_set1_epi16(static_cast<short>(v)); + return result; + } + + static UInt15 MakeUInt15(uint16_t v) + { + UInt15 result; + result.m_value = _mm_set1_epi16(static_cast<short>(v)); + return result; + } + + static SInt32 MakeSInt32(int32_t v) + { + SInt32 result; + result.m_values[0] = _mm_set1_epi32(v); + result.m_values[1] = _mm_set1_epi32(v); + return result; + } + + static UInt31 MakeUInt31(uint32_t v) + { + UInt31 result; + result.m_values[0] = _mm_set1_epi32(v); + result.m_values[1] = _mm_set1_epi32(v); + return result; + } + + static uint16_t Extract(const UInt16 &v, int offset) + { + return reinterpret_cast<const uint16_t*>(&v.m_value)[offset]; + } + + static int16_t Extract(const SInt16 &v, int offset) + { + return reinterpret_cast<const int16_t*>(&v.m_value)[offset]; + } + + static uint16_t Extract(const UInt15 &v, int offset) + { + return reinterpret_cast<const uint16_t*>(&v.m_value)[offset]; + } + + static int16_t Extract(const AInt16 &v, int offset) + { + return reinterpret_cast<const int16_t*>(&v.m_value)[offset]; + } + + static void PutUInt16(UInt16 &dest, int offset, uint16_t v) + { + reinterpret_cast<uint16_t*>(&dest)[offset] = v; + } + + static void PutUInt15(UInt15 &dest, int offset, uint16_t v) + { + reinterpret_cast<uint16_t*>(&dest)[offset] = v; + } + + static void PutSInt16(SInt16 &dest, int offset, int16_t v) + { + reinterpret_cast<int16_t*>(&dest)[offset] = v; + } + + static float ExtractFloat(const Float& v, int offset) + { + return reinterpret_cast<const float*>(&v)[offset]; + } + + static void PutFloat(Float &dest, int offset, float v) + { + reinterpret_cast<float*>(&dest)[offset] = v; + } + + static Int16CompFlag Less(const SInt16 &a, const SInt16 &b) + { + Int16CompFlag result; + result.m_value = _mm_cmplt_epi16(a.m_value, b.m_value); + return result; + } + + static Int16CompFlag Less(const UInt15 &a, const UInt15 &b) + { + Int16CompFlag result; + result.m_value = _mm_cmplt_epi16(a.m_value, b.m_value); + return result; + } + + static Int16CompFlag LessOrEqual(const UInt15 &a, const UInt15 &b) + { + Int16CompFlag result; + result.m_value = _mm_cmplt_epi16(a.m_value, b.m_value); + return result; + } + + static FloatCompFlag Less(const Float &a, const Float &b) + { + FloatCompFlag result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_cmplt_ps(a.m_values[i], b.m_values[i]); + return result; + } + + static FloatCompFlag LessOrEqual(const Float &a, const Float &b) + { + FloatCompFlag result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_cmple_ps(a.m_values[i], b.m_values[i]); + return result; + } + + template<int TSubtype> + static Int16CompFlag Equal(const VInt16<TSubtype> &a, const VInt16<TSubtype> &b) + { + Int16CompFlag result; + result.m_value = _mm_cmpeq_epi16(a.m_value, b.m_value); + return result; + } + + static FloatCompFlag Equal(const Float &a, const Float &b) + { + FloatCompFlag result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_cmpeq_ps(a.m_values[i], b.m_values[i]); + return result; + } + + static Float ToFloat(const UInt16 &v) + { + Float result; + result.m_values[0] = _mm_cvtepi32_ps(_mm_unpacklo_epi16(v.m_value, _mm_setzero_si128())); + result.m_values[1] = _mm_cvtepi32_ps(_mm_unpackhi_epi16(v.m_value, _mm_setzero_si128())); + return result; + } + + static UInt31 ToUInt31(const UInt16 &v) + { + UInt31 result; + result.m_values[0] = _mm_unpacklo_epi16(v.m_value, _mm_setzero_si128()); + result.m_values[1] = _mm_unpackhi_epi16(v.m_value, _mm_setzero_si128()); + return result; + } + + static SInt32 ToInt32(const UInt16 &v) + { + SInt32 result; + result.m_values[0] = _mm_unpacklo_epi16(v.m_value, _mm_setzero_si128()); + result.m_values[1] = _mm_unpackhi_epi16(v.m_value, _mm_setzero_si128()); + return result; + } + + static SInt32 ToInt32(const SInt16 &v) + { + SInt32 result; + result.m_values[0] = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), v.m_value), 16); + result.m_values[1] = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), v.m_value), 16); + return result; + } + + static Float ToFloat(const SInt16 &v) + { + Float result; + result.m_values[0] = _mm_cvtepi32_ps(_mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), v.m_value), 16)); + result.m_values[1] = _mm_cvtepi32_ps(_mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), v.m_value), 16)); + return result; + } + + static Float ToFloat(const UInt15 &v) + { + Float result; + result.m_values[0] = _mm_cvtepi32_ps(_mm_unpacklo_epi16(v.m_value, _mm_setzero_si128())); + result.m_values[1] = _mm_cvtepi32_ps(_mm_unpackhi_epi16(v.m_value, _mm_setzero_si128())); + return result; + } + + static Float ToFloat(const UInt31 &v) + { + Float result; + result.m_values[0] = _mm_cvtepi32_ps(v.m_values[0]); + result.m_values[1] = _mm_cvtepi32_ps(v.m_values[1]); + return result; + } + + static Int16CompFlag FloatFlagToInt16(const FloatCompFlag &v) + { + __m128i lo = _mm_castps_si128(v.m_values[0]); + __m128i hi = _mm_castps_si128(v.m_values[1]); + + Int16CompFlag result; + result.m_value = _mm_packs_epi32(lo, hi); + return result; + } + + static FloatCompFlag Int16FlagToFloat(const Int16CompFlag &v) + { + __m128i lo = _mm_unpacklo_epi16(v.m_value, v.m_value); + __m128i hi = _mm_unpackhi_epi16(v.m_value, v.m_value); + + FloatCompFlag result; + result.m_values[0] = _mm_castsi128_ps(lo); + result.m_values[1] = _mm_castsi128_ps(hi); + return result; + } + + static Int16CompFlag MakeBoolInt16(bool b) + { + Int16CompFlag result; + if (b) + result.m_value = _mm_set1_epi16(-1); + else + result.m_value = _mm_setzero_si128(); + return result; + } + + static FloatCompFlag MakeBoolFloat(bool b) + { + FloatCompFlag result; + if (b) + result.m_values[0] = result.m_values[1] = _mm_castsi128_ps(_mm_set1_epi32(-1)); + else + result.m_values[0] = result.m_values[1] = _mm_setzero_ps(); + return result; + } + + static Int16CompFlag AndNot(const Int16CompFlag &a, const Int16CompFlag &b) + { + Int16CompFlag result; + result.m_value = _mm_andnot_si128(b.m_value, a.m_value); + return result; + } + + static UInt16 RoundAndConvertToU16(const Float &v, const void* /*roundingMode*/) + { + __m128i lo = _mm_cvtps_epi32(_mm_add_ps(v.m_values[0], _mm_set1_ps(-32768))); + __m128i hi = _mm_cvtps_epi32(_mm_add_ps(v.m_values[1], _mm_set1_ps(-32768))); + + __m128i packed = _mm_packs_epi32(lo, hi); + + UInt16 result; + result.m_value = _mm_xor_si128(packed, _mm_set1_epi16(-32768)); + return result; + } + + static UInt15 RoundAndConvertToU15(const Float &v, const void* /*roundingMode*/) + { + __m128i lo = _mm_cvtps_epi32(v.m_values[0]); + __m128i hi = _mm_cvtps_epi32(v.m_values[1]); + + __m128i packed = _mm_packs_epi32(lo, hi); + + UInt15 result; + result.m_value = _mm_packs_epi32(lo, hi); + return result; + } + + static SInt16 RoundAndConvertToS16(const Float &v, const void* /*roundingMode*/) + { + __m128i lo = _mm_cvtps_epi32(v.m_values[0]); + __m128i hi = _mm_cvtps_epi32(v.m_values[1]); + + __m128i packed = _mm_packs_epi32(lo, hi); + + SInt16 result; + result.m_value = _mm_packs_epi32(lo, hi); + return result; + } + + static Float Sqrt(const Float &f) + { + Float result; + for (int i = 0; i < 2; i++) + result.m_values[i] = _mm_sqrt_ps(f.m_values[i]); + return result; + } + + static UInt16 Abs(const SInt16 &a) + { + __m128i signBitsXor = _mm_srai_epi16(a.m_value, 15); + __m128i signBitsAdd = _mm_srli_epi16(a.m_value, 15); + + UInt16 result; + result.m_value = _mm_add_epi16(_mm_xor_si128(a.m_value, signBitsXor), signBitsAdd); + return result; + } + + static Float Abs(const Float& a) + { + __m128 invMask = _mm_set1_ps(-0.0f); + + Float result; + result.m_values[0] = _mm_andnot_ps(invMask, a.m_values[0]); + result.m_values[1] = _mm_andnot_ps(invMask, a.m_values[1]); + return result; + } + + static UInt16 SqDiffUInt8(const UInt15 &a, const UInt15 &b) + { + __m128i diff = _mm_sub_epi16(a.m_value, b.m_value); + + UInt16 result; + result.m_value = _mm_mullo_epi16(diff, diff); + return result; + } + + static Float SqDiffSInt16(const SInt16 &a, const SInt16 &b) + { + __m128i diffU = _mm_sub_epi16(_mm_max_epi16(a.m_value, b.m_value), _mm_min_epi16(a.m_value, b.m_value)); + + __m128i mulHi = _mm_mulhi_epu16(diffU, diffU); + __m128i mulLo = _mm_mullo_epi16(diffU, diffU); + __m128i sqDiffHi = _mm_unpackhi_epi16(mulLo, mulHi); + __m128i sqDiffLo = _mm_unpacklo_epi16(mulLo, mulHi); + + Float result; + result.m_values[0] = _mm_cvtepi32_ps(sqDiffLo); + result.m_values[1] = _mm_cvtepi32_ps(sqDiffHi); + + return result; + } + + static Float TwosCLHalfToFloat(const SInt16 &v) + { + __m128i absV = _mm_add_epi16(_mm_xor_si128(v.m_value, _mm_srai_epi16(v.m_value, 15)), _mm_srli_epi16(v.m_value, 15)); + + __m128i signBits = _mm_and_si128(v.m_value, _mm_set1_epi16(-32768)); + __m128i mantissa = _mm_and_si128(v.m_value, _mm_set1_epi16(0x03ff)); + __m128i exponent = _mm_and_si128(v.m_value, _mm_set1_epi16(0x7c00)); + + __m128i isDenormal = _mm_cmpeq_epi16(exponent, _mm_setzero_si128()); + + // Convert exponent to high-bits + exponent = _mm_add_epi16(_mm_srli_epi16(exponent, 3), _mm_set1_epi16(14336)); + + __m128i denormalCorrectionHigh = _mm_and_si128(isDenormal, _mm_or_si128(signBits, _mm_set1_epi16(14336))); + + __m128i highBits = _mm_or_si128(signBits, _mm_or_si128(exponent, _mm_srli_epi16(mantissa, 3))); + __m128i lowBits = _mm_slli_epi16(mantissa, 13); + + __m128i flow = _mm_unpacklo_epi16(lowBits, highBits); + __m128i fhigh = _mm_unpackhi_epi16(lowBits, highBits); + + __m128i correctionLow = _mm_unpacklo_epi16(_mm_setzero_si128(), denormalCorrectionHigh); + __m128i correctionHigh = _mm_unpackhi_epi16(_mm_setzero_si128(), denormalCorrectionHigh); + + Float result; + result.m_values[0] = _mm_sub_ps(_mm_castsi128_ps(flow), _mm_castsi128_ps(correctionLow)); + result.m_values[1] = _mm_sub_ps(_mm_castsi128_ps(fhigh), _mm_castsi128_ps(correctionHigh)); + + return result; + } + + static Float SqDiff2CLFloat(const SInt16 &a, const Float &b) + { + Float fa = TwosCLHalfToFloat(a); + + Float diff = fa - b; + return diff * diff; + } + + static Float SqDiff2CL(const SInt16 &a, const SInt16 &b) + { + Float fa = TwosCLHalfToFloat(a); + Float fb = TwosCLHalfToFloat(b); + + Float diff = fa - fb; + return diff * diff; + } + + static Float SqDiff2CLFloat(const SInt16 &a, float aWeight, const Float &b) + { + Float fa = TwosCLHalfToFloat(a) * aWeight; + + Float diff = fa - b; + return diff * diff; + } + + static UInt16 RightShift(const UInt16 &v, int bits) + { + UInt16 result; + result.m_value = _mm_srli_epi16(v.m_value, bits); + return result; + } + + static UInt31 RightShift(const UInt31 &v, int bits) + { + UInt31 result; + result.m_values[0] = _mm_srli_epi32(v.m_values[0], bits); + result.m_values[1] = _mm_srli_epi32(v.m_values[1], bits); + return result; + } + + static SInt16 RightShift(const SInt16 &v, int bits) + { + SInt16 result; + result.m_value = _mm_srai_epi16(v.m_value, bits); + return result; + } + + static UInt15 RightShift(const UInt15 &v, int bits) + { + UInt15 result; + result.m_value = _mm_srli_epi16(v.m_value, bits); + return result; + } + + static SInt32 RightShift(const SInt32 &v, int bits) + { + SInt32 result; + result.m_values[0] = _mm_srai_epi32(v.m_values[0], bits); + result.m_values[1] = _mm_srai_epi32(v.m_values[1], bits); + return result; + } + + static SInt16 ToSInt16(const SInt32 &v) + { + SInt16 result; + result.m_value = _mm_packs_epi32(v.m_values[0], v.m_values[1]); + return result; + } + + static UInt16 ToUInt16(const UInt32 &v) + { + __m128i low = _mm_srai_epi32(_mm_slli_epi32(v.m_values[0], 16), 16); + __m128i high = _mm_srai_epi32(_mm_slli_epi32(v.m_values[1], 16), 16); + + UInt16 result; + result.m_value = _mm_packs_epi32(low, high); + return result; + } + + static UInt16 ToUInt16(const UInt31 &v) + { + __m128i low = _mm_srai_epi32(_mm_slli_epi32(v.m_values[0], 16), 16); + __m128i high = _mm_srai_epi32(_mm_slli_epi32(v.m_values[1], 16), 16); + + UInt16 result; + result.m_value = _mm_packs_epi32(low, high); + return result; + } + + static UInt15 ToUInt15(const UInt31 &v) + { + UInt15 result; + result.m_value = _mm_packs_epi32(v.m_values[0], v.m_values[1]); + return result; + } + + static SInt32 XMultiply(const SInt16 &a, const SInt16 &b) + { + __m128i high = _mm_mulhi_epi16(a.m_value, b.m_value); + __m128i low = _mm_mullo_epi16(a.m_value, b.m_value); + + SInt32 result; + result.m_values[0] = _mm_unpacklo_epi16(low, high); + result.m_values[1] = _mm_unpackhi_epi16(low, high); + return result; + } + + static SInt32 XMultiply(const SInt16 &a, const UInt15 &b) + { + __m128i high = _mm_mulhi_epi16(a.m_value, b.m_value); + __m128i low = _mm_mullo_epi16(a.m_value, b.m_value); + + SInt32 result; + result.m_values[0] = _mm_unpacklo_epi16(low, high); + result.m_values[1] = _mm_unpackhi_epi16(low, high); + return result; + } + + static SInt32 XMultiply(const UInt15 &a, const SInt16 &b) + { + return XMultiply(b, a); + } + + static UInt32 XMultiply(const UInt16 &a, const UInt16 &b) + { + __m128i high = _mm_mulhi_epu16(a.m_value, b.m_value); + __m128i low = _mm_mullo_epi16(a.m_value, b.m_value); + + UInt32 result; + result.m_values[0] = _mm_unpacklo_epi16(low, high); + result.m_values[1] = _mm_unpackhi_epi16(low, high); + return result; + } + + static UInt16 CompactMultiply(const UInt16 &a, const UInt15 &b) + { + UInt16 result; + result.m_value = _mm_mullo_epi16(a.m_value, b.m_value); + return result; + } + + static UInt16 CompactMultiply(const UInt15 &a, const UInt15 &b) + { + UInt16 result; + result.m_value = _mm_mullo_epi16(a.m_value, b.m_value); + return result; + } + + static UInt31 XMultiply(const UInt15 &a, const UInt15 &b) + { + __m128i high = _mm_mulhi_epu16(a.m_value, b.m_value); + __m128i low = _mm_mullo_epi16(a.m_value, b.m_value); + + UInt31 result; + result.m_values[0] = _mm_unpacklo_epi16(low, high); + result.m_values[1] = _mm_unpackhi_epi16(low, high); + return result; + } + + static UInt31 XMultiply(const UInt16 &a, const UInt15 &b) + { + __m128i high = _mm_mulhi_epu16(a.m_value, b.m_value); + __m128i low = _mm_mullo_epi16(a.m_value, b.m_value); + + UInt31 result; + result.m_values[0] = _mm_unpacklo_epi16(low, high); + result.m_values[1] = _mm_unpackhi_epi16(low, high); + return result; + } + + static UInt31 XMultiply(const UInt15 &a, const UInt16 &b) + { + return XMultiply(b, a); + } + + static bool AnySet(const Int16CompFlag &v) + { + return _mm_movemask_epi8(v.m_value) != 0; + } + + static bool AllSet(const Int16CompFlag &v) + { + return _mm_movemask_epi8(v.m_value) == 0xffff; + } + + static bool AnySet(const FloatCompFlag &v) + { + return _mm_movemask_ps(v.m_values[0]) != 0 || _mm_movemask_ps(v.m_values[1]) != 0; + } + + static bool AllSet(const FloatCompFlag &v) + { + return _mm_movemask_ps(v.m_values[0]) == 0xf && _mm_movemask_ps(v.m_values[1]) == 0xf; + } + }; + +#else + // Scalar version + struct ParallelMath + { + struct RoundTowardZeroForScope + { + }; + + struct RoundTowardNearestForScope + { + }; + + struct RoundUpForScope + { + }; + + struct RoundDownForScope + { + }; + + static const int ParallelSize = 1; + + enum Int16Subtype + { + IntSubtype_Signed, + IntSubtype_UnsignedFull, + IntSubtype_UnsignedTruncated, + IntSubtype_Abstract, + }; + + typedef int32_t SInt16; + typedef int32_t UInt15; + typedef int32_t UInt16; + typedef int32_t AInt16; + + typedef int32_t SInt32; + typedef int32_t UInt31; + typedef int32_t UInt32; + typedef int32_t AInt32; + + typedef int32_t ScalarUInt16; + typedef int32_t ScalarSInt16; + + typedef float Float; + + template<class TTargetType> + struct LosslessCast + { + static const int32_t& Cast(const int32_t &src) + { + return src; + } + }; + + typedef bool Int16CompFlag; + typedef bool FloatCompFlag; + + static int32_t AbstractAdd(const int32_t &a, const int32_t &b) + { + return a + b; + } + + static int32_t AbstractSubtract(const int32_t &a, const int32_t &b) + { + return a - b; + } + + static float Select(bool flag, float a, float b) + { + return flag ? a : b; + } + + static int32_t Select(bool flag, int32_t a, int32_t b) + { + return flag ? a : b; + } + + static int32_t SelectOrZero(bool flag, int32_t a) + { + return flag ? a : 0; + } + + static void ConditionalSet(int32_t& dest, bool flag, int32_t src) + { + if (flag) + dest = src; + } + + static int32_t ConditionalNegate(bool flag, int32_t v) + { + return (flag) ? -v : v; + } + + static void NotConditionalSet(int32_t& dest, bool flag, int32_t src) + { + if (!flag) + dest = src; + } + + static void ConditionalSet(float& dest, bool flag, float src) + { + if (flag) + dest = src; + } + + static void NotConditionalSet(float& dest, bool flag, float src) + { + if (!flag) + dest = src; + } + + static void MakeSafeDenominator(float& v) + { + if (v == 0.0f) + v = 1.0f; + } + + static int32_t SignedRightShift(int32_t v, int bits) + { + return v >> bits; + } + + static int32_t TruncateToPrecisionSigned(int32_t v, int precision) + { + v = (v << (32 - precision)) & 0xffffffff; + return SignedRightShift(v, 32 - precision); + } + + static int32_t TruncateToPrecisionUnsigned(int32_t v, int precision) + { + return v & ((1 << precision) - 1); + } + + static int32_t Min(int32_t a, int32_t b) + { + if (a < b) + return a; + return b; + } + + static float Min(float a, float b) + { + if (a < b) + return a; + return b; + } + + static int32_t Max(int32_t a, int32_t b) + { + if (a > b) + return a; + return b; + } + + static float Max(float a, float b) + { + if (a > b) + return a; + return b; + } + + static float Abs(float a) + { + return fabsf(a); + } + + static int32_t Abs(int32_t a) + { + if (a < 0) + return -a; + return a; + } + + static float Clamp(float v, float min, float max) + { + if (v < min) + return min; + if (v > max) + return max; + return v; + } + + static float Reciprocal(float v) + { + return 1.0f / v; + } + + static void ConvertLDRInputs(const PixelBlockU8* inputBlocks, int pxOffset, int channel, int32_t& chOut) + { + chOut = inputBlocks[0].m_pixels[pxOffset][channel]; + } + + static void ConvertHDRInputs(const PixelBlockF16* inputBlocks, int pxOffset, int channel, int32_t& chOut) + { + chOut = inputBlocks[0].m_pixels[pxOffset][channel]; + } + + static float MakeFloat(float v) + { + return v; + } + + static float MakeFloatZero() + { + return 0.0f; + } + + static int32_t MakeUInt16(uint16_t v) + { + return v; + } + + static int32_t MakeSInt16(int16_t v) + { + return v; + } + + static int32_t MakeAInt16(int16_t v) + { + return v; + } + + static int32_t MakeUInt15(uint16_t v) + { + return v; + } + + static int32_t MakeSInt32(int32_t v) + { + return v; + } + + static int32_t MakeUInt31(int32_t v) + { + return v; + } + + static int32_t Extract(int32_t v, int offset) + { + UNREFERENCED_PARAMETER(offset); + return v; + } + + static void PutUInt16(int32_t &dest, int offset, ParallelMath::ScalarUInt16 v) + { + UNREFERENCED_PARAMETER(offset); + dest = v; + } + + static void PutUInt15(int32_t &dest, int offset, ParallelMath::ScalarUInt16 v) + { + UNREFERENCED_PARAMETER(offset); + dest = v; + } + + static void PutSInt16(int32_t &dest, int offset, ParallelMath::ScalarSInt16 v) + { + UNREFERENCED_PARAMETER(offset); + dest = v; + } + + static float ExtractFloat(float v, int offset) + { + UNREFERENCED_PARAMETER(offset); + return v; + } + + static void PutFloat(float &dest, int offset, float v) + { + UNREFERENCED_PARAMETER(offset); + dest = v; + } + + static bool Less(int32_t a, int32_t b) + { + return a < b; + } + + static bool Less(float a, float b) + { + return a < b; + } + + static bool LessOrEqual(int32_t a, int32_t b) + { + return a < b; + } + + static bool LessOrEqual(float a, float b) + { + return a < b; + } + + static bool Equal(int32_t a, int32_t b) + { + return a == b; + } + + static bool Equal(float a, float b) + { + return a == b; + } + + static float ToFloat(int32_t v) + { + return static_cast<float>(v); + } + + static int32_t ToUInt31(int32_t v) + { + return v; + } + + static int32_t ToInt32(int32_t v) + { + return v; + } + + static bool FloatFlagToInt16(bool v) + { + return v; + } + + static bool Int16FlagToFloat(bool v) + { + return v; + } + + static bool MakeBoolInt16(bool b) + { + return b; + } + + static bool MakeBoolFloat(bool b) + { + return b; + } + + static bool AndNot(bool a, bool b) + { + return a && !b; + } + + static int32_t RoundAndConvertToInt(float v, const ParallelMath::RoundTowardZeroForScope *rtz) + { + UNREFERENCED_PARAMETER(rtz); + return static_cast<int>(v); + } + + static int32_t RoundAndConvertToInt(float v, const ParallelMath::RoundUpForScope *ru) + { + UNREFERENCED_PARAMETER(ru); + return static_cast<int>(ceilf(v)); + } + + static int32_t RoundAndConvertToInt(float v, const ParallelMath::RoundDownForScope *rd) + { + UNREFERENCED_PARAMETER(rd); + return static_cast<int>(floorf(v)); + } + + static int32_t RoundAndConvertToInt(float v, const ParallelMath::RoundTowardNearestForScope *rtn) + { + UNREFERENCED_PARAMETER(rtn); + return static_cast<int>(floorf(v + 0.5f)); + } + + template<class TRoundMode> + static int32_t RoundAndConvertToU16(float v, const TRoundMode *roundingMode) + { + return RoundAndConvertToInt(v, roundingMode); + } + + template<class TRoundMode> + static int32_t RoundAndConvertToU15(float v, const TRoundMode *roundingMode) + { + return RoundAndConvertToInt(v, roundingMode); + } + + template<class TRoundMode> + static int32_t RoundAndConvertToS16(float v, const TRoundMode *roundingMode) + { + return RoundAndConvertToInt(v, roundingMode); + } + + static float Sqrt(float f) + { + return sqrtf(f); + } + + static int32_t SqDiffUInt8(int32_t a, int32_t b) + { + int32_t delta = a - b; + return delta * delta; + } + + static int32_t SqDiffInt16(int32_t a, int32_t b) + { + int32_t delta = a - b; + return delta * delta; + } + + static int32_t SqDiffSInt16(int32_t a, int32_t b) + { + int32_t delta = a - b; + return delta * delta; + } + + static float TwosCLHalfToFloat(int32_t v) + { + int32_t absV = (v < 0) ? -v : v; + + int32_t signBits = (absV & -32768); + int32_t mantissa = (absV & 0x03ff); + int32_t exponent = (absV & 0x7c00); + + bool isDenormal = (exponent == 0); + + // Convert exponent to high-bits + exponent = (exponent >> 3) + 14336; + + int32_t denormalCorrection = (isDenormal ? (signBits | 14336) : 0) << 16; + + int32_t fBits = ((exponent | signBits) << 16) | (mantissa << 13); + + float f, correction; + memcpy(&f, &fBits, 4); + memcpy(&correction, &denormalCorrection, 4); + + return f - correction; + } + + static Float SqDiff2CLFloat(const SInt16 &a, const Float &b) + { + Float fa = TwosCLHalfToFloat(a); + + Float diff = fa - b; + return diff * diff; + } + + static Float SqDiff2CL(const SInt16 &a, const SInt16 &b) + { + Float fa = TwosCLHalfToFloat(a); + Float fb = TwosCLHalfToFloat(b); + + Float diff = fa - fb; + return diff * diff; + } + + static Float SqDiff2CLFloat(const SInt16 &a, float aWeight, const Float &b) + { + Float fa = TwosCLHalfToFloat(a) * aWeight; + + Float diff = fa - b; + return diff * diff; + } + + static int32_t RightShift(int32_t v, int bits) + { + return SignedRightShift(v, bits); + } + + static int32_t ToSInt16(int32_t v) + { + return v; + } + + static int32_t ToUInt16(int32_t v) + { + return v; + } + + static int32_t ToUInt15(int32_t v) + { + return v; + } + + static int32_t XMultiply(int32_t a, int32_t b) + { + return a * b; + } + + static int32_t CompactMultiply(int32_t a, int32_t b) + { + return a * b; + } + + static bool AnySet(bool v) + { + return v; + } + + static bool AllSet(bool v) + { + return v; + } + }; + +#endif + + namespace Internal + { + namespace BC7Data + { + enum AlphaMode + { + AlphaMode_Combined, + AlphaMode_Separate, + AlphaMode_None, + }; + + enum PBitMode + { + PBitMode_PerEndpoint, + PBitMode_PerSubset, + PBitMode_None + }; + + struct BC7ModeInfo + { + PBitMode m_pBitMode; + AlphaMode m_alphaMode; + int m_rgbBits; + int m_alphaBits; + int m_partitionBits; + int m_numSubsets; + int m_indexBits; + int m_alphaIndexBits; + bool m_hasIndexSelector; + }; + + BC7ModeInfo g_modes[] = + { + { PBitMode_PerEndpoint, AlphaMode_None, 4, 0, 4, 3, 3, 0, false }, // 0 + { PBitMode_PerSubset, AlphaMode_None, 6, 0, 6, 2, 3, 0, false }, // 1 + { PBitMode_None, AlphaMode_None, 5, 0, 6, 3, 2, 0, false }, // 2 + { PBitMode_PerEndpoint, AlphaMode_None, 7, 0, 6, 2, 2, 0, false }, // 3 (Mode reference has an error, P-bit is really per-endpoint) + + { PBitMode_None, AlphaMode_Separate, 5, 6, 0, 1, 2, 3, true }, // 4 + { PBitMode_None, AlphaMode_Separate, 7, 8, 0, 1, 2, 2, false }, // 5 + { PBitMode_PerEndpoint, AlphaMode_Combined, 7, 7, 0, 1, 4, 0, false }, // 6 + { PBitMode_PerEndpoint, AlphaMode_Combined, 5, 5, 6, 2, 2, 0, false } // 7 + }; + + const int g_weight2[] = { 0, 21, 43, 64 }; + const int g_weight3[] = { 0, 9, 18, 27, 37, 46, 55, 64 }; + const int g_weight4[] = { 0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64 }; + + const int *g_weightTables[] = + { + NULL, + NULL, + g_weight2, + g_weight3, + g_weight4 + }; + + struct BC6HModeInfo + { + uint16_t m_modeID; + bool m_partitioned; + bool m_transformed; + int m_aPrec; + int m_bPrec[3]; + }; + + // [partitioned][precision] + bool g_hdrModesExistForPrecision[2][17] = + { + //0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + { false, false, false, false, false, false, false, false, false, false, true, true, true, false, false, false, true }, + { false, false, false, false, false, false, true, true, true, true, true, true, false, false, false, false, false }, + }; + + BC6HModeInfo g_hdrModes[] = + { + { 0x00, true, true, 10,{ 5, 5, 5 } }, + { 0x01, true, true, 7,{ 6, 6, 6 } }, + { 0x02, true, true, 11,{ 5, 4, 4 } }, + { 0x06, true, true, 11,{ 4, 5, 4 } }, + { 0x0a, true, true, 11,{ 4, 4, 5 } }, + { 0x0e, true, true, 9,{ 5, 5, 5 } }, + { 0x12, true, true, 8,{ 6, 5, 5 } }, + { 0x16, true, true, 8,{ 5, 6, 5 } }, + { 0x1a, true, true, 8,{ 5, 5, 6 } }, + { 0x1e, true, false, 6,{ 6, 6, 6 } }, + { 0x03, false, false, 10,{ 10, 10, 10 } }, + { 0x07, false, true, 11,{ 9, 9, 9 } }, + { 0x0b, false, true, 12,{ 8, 8, 8 } }, + { 0x0f, false, true, 16,{ 4, 4, 4 } }, + }; + + const int g_maxHDRPrecision = 16; + + static const size_t g_numHDRModes = sizeof(g_hdrModes) / sizeof(g_hdrModes[0]); + + static uint16_t g_partitionMap[64] = + { + 0xCCCC, 0x8888, 0xEEEE, 0xECC8, + 0xC880, 0xFEEC, 0xFEC8, 0xEC80, + 0xC800, 0xFFEC, 0xFE80, 0xE800, + 0xFFE8, 0xFF00, 0xFFF0, 0xF000, + 0xF710, 0x008E, 0x7100, 0x08CE, + 0x008C, 0x7310, 0x3100, 0x8CCE, + 0x088C, 0x3110, 0x6666, 0x366C, + 0x17E8, 0x0FF0, 0x718E, 0x399C, + 0xaaaa, 0xf0f0, 0x5a5a, 0x33cc, + 0x3c3c, 0x55aa, 0x9696, 0xa55a, + 0x73ce, 0x13c8, 0x324c, 0x3bdc, + 0x6996, 0xc33c, 0x9966, 0x660, + 0x272, 0x4e4, 0x4e40, 0x2720, + 0xc936, 0x936c, 0x39c6, 0x639c, + 0x9336, 0x9cc6, 0x817e, 0xe718, + 0xccf0, 0xfcc, 0x7744, 0xee22, + }; + + static uint32_t g_partitionMap2[64] = + { + 0xaa685050, 0x6a5a5040, 0x5a5a4200, 0x5450a0a8, + 0xa5a50000, 0xa0a05050, 0x5555a0a0, 0x5a5a5050, + 0xaa550000, 0xaa555500, 0xaaaa5500, 0x90909090, + 0x94949494, 0xa4a4a4a4, 0xa9a59450, 0x2a0a4250, + 0xa5945040, 0x0a425054, 0xa5a5a500, 0x55a0a0a0, + 0xa8a85454, 0x6a6a4040, 0xa4a45000, 0x1a1a0500, + 0x0050a4a4, 0xaaa59090, 0x14696914, 0x69691400, + 0xa08585a0, 0xaa821414, 0x50a4a450, 0x6a5a0200, + 0xa9a58000, 0x5090a0a8, 0xa8a09050, 0x24242424, + 0x00aa5500, 0x24924924, 0x24499224, 0x50a50a50, + 0x500aa550, 0xaaaa4444, 0x66660000, 0xa5a0a5a0, + 0x50a050a0, 0x69286928, 0x44aaaa44, 0x66666600, + 0xaa444444, 0x54a854a8, 0x95809580, 0x96969600, + 0xa85454a8, 0x80959580, 0xaa141414, 0x96960000, + 0xaaaa1414, 0xa05050a0, 0xa0a5a5a0, 0x96000000, + 0x40804080, 0xa9a8a9a8, 0xaaaaaa44, 0x2a4a5254, + }; + + static int g_fixupIndexes2[64] = + { + 15,15,15,15, + 15,15,15,15, + 15,15,15,15, + 15,15,15,15, + 15, 2, 8, 2, + 2, 8, 8,15, + 2, 8, 2, 2, + 8, 8, 2, 2, + + 15,15, 6, 8, + 2, 8,15,15, + 2, 8, 2, 2, + 2,15,15, 6, + 6, 2, 6, 8, + 15,15, 2, 2, + 15,15,15,15, + 15, 2, 2,15, + }; + + static int g_fixupIndexes3[64][2] = + { + { 3,15 },{ 3, 8 },{ 15, 8 },{ 15, 3 }, + { 8,15 },{ 3,15 },{ 15, 3 },{ 15, 8 }, + { 8,15 },{ 8,15 },{ 6,15 },{ 6,15 }, + { 6,15 },{ 5,15 },{ 3,15 },{ 3, 8 }, + { 3,15 },{ 3, 8 },{ 8,15 },{ 15, 3 }, + { 3,15 },{ 3, 8 },{ 6,15 },{ 10, 8 }, + { 5, 3 },{ 8,15 },{ 8, 6 },{ 6,10 }, + { 8,15 },{ 5,15 },{ 15,10 },{ 15, 8 }, + + { 8,15 },{ 15, 3 },{ 3,15 },{ 5,10 }, + { 6,10 },{ 10, 8 },{ 8, 9 },{ 15,10 }, + { 15, 6 },{ 3,15 },{ 15, 8 },{ 5,15 }, + { 15, 3 },{ 15, 6 },{ 15, 6 },{ 15, 8 }, + { 3,15 },{ 15, 3 },{ 5,15 },{ 5,15 }, + { 5,15 },{ 8,15 },{ 5,15 },{ 10,15 }, + { 5,15 },{ 10,15 },{ 8,15 },{ 13,15 }, + { 15, 3 },{ 12,15 },{ 3,15 },{ 3, 8 }, + }; + + static const unsigned char g_fragments[] = + { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // 0, 16 + 0, 1, 2, 3, // 16, 4 + 0, 1, 4, // 20, 3 + 0, 1, 2, 4, // 23, 4 + 2, 3, 7, // 27, 3 + 1, 2, 3, 7, // 30, 4 + 0, 1, 2, 3, 4, 5, 6, 7, // 34, 8 + 0, 1, 4, 8, // 42, 4 + 0, 1, 2, 4, 5, 8, // 46, 6 + 0, 1, 2, 3, 4, 5, 6, 8, // 52, 8 + 1, 4, 5, 6, 9, // 60, 5 + 2, 5, 6, 7, 10, // 65, 5 + 5, 6, 9, 10, // 70, 4 + 2, 3, 7, 11, // 74, 4 + 1, 2, 3, 6, 7, 11, // 78, 6 + 0, 1, 2, 3, 5, 6, 7, 11, // 84, 8 + 0, 1, 2, 3, 8, 9, 10, 11, // 92, 8 + 2, 3, 6, 7, 8, 9, 10, 11, // 100, 8 + 4, 5, 6, 7, 8, 9, 10, 11, // 108, 8 + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, // 116, 12 + 0, 4, 8, 12, // 128, 4 + 0, 2, 3, 4, 6, 7, 8, 12, // 132, 8 + 0, 1, 2, 4, 5, 8, 9, 12, // 140, 8 + 0, 1, 2, 3, 4, 5, 6, 8, 9, 12, // 148, 10 + 3, 6, 7, 8, 9, 12, // 158, 6 + 3, 5, 6, 7, 8, 9, 10, 12, // 164, 8 + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, // 172, 12 + 0, 1, 2, 5, 6, 7, 11, 12, // 184, 8 + 5, 8, 9, 10, 13, // 192, 5 + 8, 12, 13, // 197, 3 + 4, 8, 12, 13, // 200, 4 + 2, 3, 6, 9, 12, 13, // 204, 6 + 0, 1, 2, 3, 8, 9, 12, 13, // 210, 8 + 0, 1, 4, 5, 8, 9, 12, 13, // 218, 8 + 2, 3, 6, 7, 8, 9, 12, 13, // 226, 8 + 2, 3, 5, 6, 9, 10, 12, 13, // 234, 8 + 0, 3, 6, 7, 9, 10, 12, 13, // 242, 8 + 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, // 250, 12 + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, // 262, 13 + 2, 3, 4, 7, 8, 11, 12, 13, // 275, 8 + 1, 2, 6, 7, 8, 11, 12, 13, // 283, 8 + 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, // 291, 10 + 2, 3, 4, 5, 10, 11, 12, 13, // 301, 8 + 0, 1, 6, 7, 10, 11, 12, 13, // 309, 8 + 6, 9, 10, 11, 14, // 317, 5 + 0, 2, 4, 6, 8, 10, 12, 14, // 322, 8 + 1, 3, 5, 7, 8, 10, 12, 14, // 330, 8 + 1, 3, 4, 6, 9, 11, 12, 14, // 338, 8 + 0, 2, 5, 7, 9, 11, 12, 14, // 346, 8 + 0, 3, 4, 5, 8, 9, 13, 14, // 354, 8 + 2, 3, 4, 7, 8, 9, 13, 14, // 362, 8 + 1, 2, 5, 6, 9, 10, 13, 14, // 370, 8 + 0, 3, 4, 7, 9, 10, 13, 14, // 378, 8 + 0, 3, 5, 6, 8, 11, 13, 14, // 386, 8 + 1, 2, 4, 7, 8, 11, 13, 14, // 394, 8 + 0, 1, 4, 7, 10, 11, 13, 14, // 402, 8 + 0, 3, 6, 7, 10, 11, 13, 14, // 410, 8 + 8, 12, 13, 14, // 418, 4 + 1, 2, 3, 7, 8, 12, 13, 14, // 422, 8 + 4, 8, 9, 12, 13, 14, // 430, 6 + 0, 4, 5, 8, 9, 12, 13, 14, // 436, 8 + 1, 2, 3, 6, 7, 8, 9, 12, 13, 14, // 444, 10 + 2, 6, 8, 9, 10, 12, 13, 14, // 454, 8 + 0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14, // 462, 12 + 0, 7, 9, 10, 11, 12, 13, 14, // 474, 8 + 1, 2, 3, 4, 5, 6, 8, 15, // 482, 8 + 3, 7, 11, 15, // 490, 4 + 0, 1, 3, 4, 5, 7, 11, 15, // 494, 8 + 0, 4, 5, 10, 11, 15, // 502, 6 + 1, 2, 3, 6, 7, 10, 11, 15, // 508, 8 + 0, 1, 2, 3, 5, 6, 7, 10, 11, 15, // 516, 10 + 0, 4, 5, 6, 9, 10, 11, 15, // 526, 8 + 0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 15, // 534, 12 + 1, 2, 4, 5, 8, 9, 12, 15, // 546, 8 + 2, 3, 5, 6, 8, 9, 12, 15, // 554, 8 + 0, 3, 5, 6, 9, 10, 12, 15, // 562, 8 + 1, 2, 4, 7, 9, 10, 12, 15, // 570, 8 + 1, 2, 5, 6, 8, 11, 12, 15, // 578, 8 + 0, 3, 4, 7, 8, 11, 12, 15, // 586, 8 + 0, 1, 5, 6, 10, 11, 12, 15, // 594, 8 + 1, 2, 6, 7, 10, 11, 12, 15, // 602, 8 + 1, 3, 4, 6, 8, 10, 13, 15, // 610, 8 + 0, 2, 5, 7, 8, 10, 13, 15, // 618, 8 + 0, 2, 4, 6, 9, 11, 13, 15, // 626, 8 + 1, 3, 5, 7, 9, 11, 13, 15, // 634, 8 + 0, 1, 2, 3, 4, 5, 7, 8, 12, 13, 15, // 642, 11 + 2, 3, 4, 5, 8, 9, 14, 15, // 653, 8 + 0, 1, 6, 7, 8, 9, 14, 15, // 661, 8 + 0, 1, 5, 10, 14, 15, // 669, 6 + 0, 3, 4, 5, 9, 10, 14, 15, // 675, 8 + 0, 1, 5, 6, 9, 10, 14, 15, // 683, 8 + 11, 14, 15, // 691, 3 + 7, 11, 14, 15, // 694, 4 + 1, 2, 4, 5, 8, 11, 14, 15, // 698, 8 + 0, 1, 4, 7, 8, 11, 14, 15, // 706, 8 + 0, 1, 4, 5, 10, 11, 14, 15, // 714, 8 + 2, 3, 6, 7, 10, 11, 14, 15, // 722, 8 + 4, 5, 6, 7, 10, 11, 14, 15, // 730, 8 + 0, 1, 4, 5, 7, 8, 10, 11, 14, 15, // 738, 10 + 0, 1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, // 748, 12 + 0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 14, 15, // 760, 13 + 0, 1, 2, 3, 4, 6, 7, 11, 12, 14, 15, // 773, 11 + 3, 4, 8, 9, 10, 13, 14, 15, // 784, 8 + 11, 13, 14, 15, // 792, 4 + 0, 1, 2, 4, 11, 13, 14, 15, // 796, 8 + 0, 1, 2, 4, 5, 10, 11, 13, 14, 15, // 804, 10 + 7, 10, 11, 13, 14, 15, // 814, 6 + 3, 6, 7, 10, 11, 13, 14, 15, // 820, 8 + 1, 5, 9, 10, 11, 13, 14, 15, // 828, 8 + 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, // 836, 12 + 12, 13, 14, 15, // 848, 4 + 0, 1, 2, 3, 12, 13, 14, 15, // 852, 8 + 0, 1, 4, 5, 12, 13, 14, 15, // 860, 8 + 4, 5, 6, 7, 12, 13, 14, 15, // 868, 8 + 4, 8, 9, 10, 12, 13, 14, 15, // 876, 8 + 0, 4, 5, 8, 9, 10, 12, 13, 14, 15, // 884, 10 + 0, 1, 4, 5, 6, 8, 9, 10, 12, 13, 14, 15, // 894, 12 + 0, 1, 2, 3, 4, 7, 8, 11, 12, 13, 14, 15, // 906, 12 + 0, 1, 3, 4, 8, 9, 11, 12, 13, 14, 15, // 918, 11 + 0, 2, 3, 7, 8, 10, 11, 12, 13, 14, 15, // 929, 11 + 7, 9, 10, 11, 12, 13, 14, 15, // 940, 8 + 3, 6, 7, 9, 10, 11, 12, 13, 14, 15, // 948, 10 + 2, 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, // 958, 12 + 8, 9, 10, 11, 12, 13, 14, 15, // 970, 8 + 0, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, // 978, 12 + 0, 1, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, // 990, 13 + 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // 1003, 12 + 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // 1015, 13 + 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // 1028, 12 + 0, 2, // 1040, 2 + 1, 3, // 1042, 2 + 0, 1, 4, 5, // 1044, 4 + 0, 1, 2, 4, 5, // 1048, 5 + 2, 3, 6, // 1053, 3 + 0, 2, 4, 6, // 1056, 4 + 1, 2, 5, 6, // 1060, 4 + 0, 1, 2, 3, 5, 6, // 1064, 6 + 0, 1, 2, 4, 5, 6, // 1070, 6 + 0, 1, 2, 3, 4, 5, 6, // 1076, 7 + 0, 3, 4, 7, // 1083, 4 + 0, 1, 2, 3, 4, 7, // 1087, 6 + 1, 3, 5, 7, // 1093, 4 + 2, 3, 6, 7, // 1097, 4 + 1, 2, 3, 6, 7, // 1101, 5 + 1, 2, 3, 5, 6, 7, // 1106, 6 + 0, 1, 2, 3, 5, 6, 7, // 1112, 7 + 4, 5, 6, 7, // 1119, 4 + 0, 8, // 1123, 2 + 0, 1, 4, 5, 8, // 1125, 5 + 0, 1, 8, 9, // 1130, 4 + 4, 5, 8, 9, // 1134, 4 + 0, 1, 4, 5, 8, 9, // 1138, 6 + 2, 6, 8, 9, // 1144, 4 + 6, 7, 8, 9, // 1148, 4 + 0, 2, 4, 6, 8, 10, // 1152, 6 + 1, 2, 5, 6, 9, 10, // 1158, 6 + 0, 3, 4, 7, 9, 10, // 1164, 6 + 0, 1, 2, 8, 9, 10, // 1170, 6 + 4, 5, 6, 8, 9, 10, // 1176, 6 + 3, 11, // 1182, 2 + 2, 3, 6, 7, 11, // 1184, 5 + 0, 3, 8, 11, // 1189, 4 + 0, 3, 4, 7, 8, 11, // 1193, 6 + 1, 3, 5, 7, 9, 11, // 1199, 6 + 2, 3, 10, 11, // 1205, 4 + 1, 5, 10, 11, // 1209, 4 + 4, 5, 10, 11, // 1213, 4 + 6, 7, 10, 11, // 1217, 4 + 2, 3, 6, 7, 10, 11, // 1221, 6 + 1, 2, 3, 9, 10, 11, // 1227, 6 + 5, 6, 7, 9, 10, 11, // 1233, 6 + 8, 9, 10, 11, // 1239, 4 + 4, 12, // 1243, 2 + 0, 1, 2, 3, 4, 5, 8, 12, // 1245, 8 + 8, 9, 12, // 1253, 3 + 0, 4, 5, 8, 9, 12, // 1256, 6 + 0, 1, 4, 5, 8, 9, 12, // 1262, 7 + 2, 3, 5, 6, 8, 9, 12, // 1269, 7 + 1, 5, 9, 13, // 1276, 4 + 6, 7, 9, 13, // 1280, 4 + 1, 4, 7, 10, 13, // 1284, 5 + 1, 6, 8, 11, 13, // 1289, 5 + 0, 1, 12, 13, // 1294, 4 + 4, 5, 12, 13, // 1298, 4 + 0, 1, 6, 7, 12, 13, // 1302, 6 + 0, 1, 4, 8, 12, 13, // 1308, 6 + 8, 9, 12, 13, // 1314, 4 + 4, 8, 9, 12, 13, // 1318, 5 + 4, 5, 8, 9, 12, 13, // 1323, 6 + 0, 4, 5, 8, 9, 12, 13, // 1329, 7 + 0, 1, 6, 10, 12, 13, // 1336, 6 + 3, 6, 7, 9, 10, 12, 13, // 1342, 7 + 0, 1, 10, 11, 12, 13, // 1349, 6 + 2, 4, 7, 9, 14, // 1355, 5 + 4, 5, 10, 14, // 1360, 4 + 2, 6, 10, 14, // 1364, 4 + 2, 5, 8, 11, 14, // 1368, 5 + 0, 2, 12, 14, // 1373, 4 + 8, 10, 12, 14, // 1377, 4 + 4, 6, 8, 10, 12, 14, // 1381, 6 + 13, 14, // 1387, 2 + 9, 10, 13, 14, // 1389, 4 + 5, 6, 9, 10, 13, 14, // 1393, 6 + 0, 1, 2, 12, 13, 14, // 1399, 6 + 4, 5, 6, 12, 13, 14, // 1405, 6 + 8, 9, 12, 13, 14, // 1411, 5 + 8, 9, 10, 12, 13, 14, // 1416, 6 + 7, 15, // 1422, 2 + 0, 5, 10, 15, // 1424, 4 + 0, 1, 2, 3, 6, 7, 11, 15, // 1428, 8 + 10, 11, 15, // 1436, 3 + 0, 1, 5, 6, 10, 11, 15, // 1439, 7 + 3, 6, 7, 10, 11, 15, // 1446, 6 + 12, 15, // 1452, 2 + 0, 3, 12, 15, // 1454, 4 + 4, 7, 12, 15, // 1458, 4 + 0, 3, 6, 9, 12, 15, // 1462, 6 + 0, 3, 5, 10, 12, 15, // 1468, 6 + 8, 11, 12, 15, // 1474, 4 + 5, 6, 8, 11, 12, 15, // 1478, 6 + 4, 7, 8, 11, 12, 15, // 1484, 6 + 1, 3, 13, 15, // 1490, 4 + 9, 11, 13, 15, // 1494, 4 + 5, 7, 9, 11, 13, 15, // 1498, 6 + 2, 3, 14, 15, // 1504, 4 + 2, 3, 4, 5, 14, 15, // 1508, 6 + 6, 7, 14, 15, // 1514, 4 + 2, 3, 5, 9, 14, 15, // 1518, 6 + 2, 3, 8, 9, 14, 15, // 1524, 6 + 10, 14, 15, // 1530, 3 + 0, 4, 5, 9, 10, 14, 15, // 1533, 7 + 2, 3, 7, 11, 14, 15, // 1540, 6 + 10, 11, 14, 15, // 1546, 4 + 7, 10, 11, 14, 15, // 1550, 5 + 6, 7, 10, 11, 14, 15, // 1555, 6 + 1, 2, 3, 13, 14, 15, // 1561, 6 + 5, 6, 7, 13, 14, 15, // 1567, 6 + 10, 11, 13, 14, 15, // 1573, 5 + 9, 10, 11, 13, 14, 15, // 1578, 6 + 0, 4, 8, 9, 12, 13, 14, 15, // 1584, 8 + 9, 10, 12, 13, 14, 15, // 1592, 6 + 8, 11, 12, 13, 14, 15, // 1598, 6 + 3, 7, 10, 11, 12, 13, 14, 15, // 1604, 8 + }; + static const int g_shapeRanges[][2] = + { + { 0, 16 },{ 16, 4 },{ 20, 3 },{ 23, 4 },{ 27, 3 },{ 30, 4 },{ 34, 8 },{ 42, 4 },{ 46, 6 },{ 52, 8 },{ 60, 5 }, + { 65, 5 },{ 70, 4 },{ 74, 4 },{ 78, 6 },{ 84, 8 },{ 92, 8 },{ 100, 8 },{ 108, 8 },{ 116, 12 },{ 128, 4 },{ 132, 8 }, + { 140, 8 },{ 148, 10 },{ 158, 6 },{ 164, 8 },{ 172, 12 },{ 184, 8 },{ 192, 5 },{ 197, 3 },{ 200, 4 },{ 204, 6 },{ 210, 8 }, + { 218, 8 },{ 226, 8 },{ 234, 8 },{ 242, 8 },{ 250, 12 },{ 262, 13 },{ 275, 8 },{ 283, 8 },{ 291, 10 },{ 301, 8 },{ 309, 8 }, + { 317, 5 },{ 322, 8 },{ 330, 8 },{ 338, 8 },{ 346, 8 },{ 354, 8 },{ 362, 8 },{ 370, 8 },{ 378, 8 },{ 386, 8 },{ 394, 8 }, + { 402, 8 },{ 410, 8 },{ 418, 4 },{ 422, 8 },{ 430, 6 },{ 436, 8 },{ 444, 10 },{ 454, 8 },{ 462, 12 },{ 474, 8 },{ 482, 8 }, + { 490, 4 },{ 494, 8 },{ 502, 6 },{ 508, 8 },{ 516, 10 },{ 526, 8 },{ 534, 12 },{ 546, 8 },{ 554, 8 },{ 562, 8 },{ 570, 8 }, + { 578, 8 },{ 586, 8 },{ 594, 8 },{ 602, 8 },{ 610, 8 },{ 618, 8 },{ 626, 8 },{ 634, 8 },{ 642, 11 },{ 653, 8 },{ 661, 8 }, + { 669, 6 },{ 675, 8 },{ 683, 8 },{ 691, 3 },{ 694, 4 },{ 698, 8 },{ 706, 8 },{ 714, 8 },{ 722, 8 },{ 730, 8 },{ 738, 10 }, + { 748, 12 },{ 760, 13 },{ 773, 11 },{ 784, 8 },{ 792, 4 },{ 796, 8 },{ 804, 10 },{ 814, 6 },{ 820, 8 },{ 828, 8 },{ 836, 12 }, + { 848, 4 },{ 852, 8 },{ 860, 8 },{ 868, 8 },{ 876, 8 },{ 884, 10 },{ 894, 12 },{ 906, 12 },{ 918, 11 },{ 929, 11 },{ 940, 8 }, + { 948, 10 },{ 958, 12 },{ 970, 8 },{ 978, 12 },{ 990, 13 },{ 1003, 12 },{ 1015, 13 },{ 1028, 12 },{ 1040, 2 },{ 1042, 2 },{ 1044, 4 }, + { 1048, 5 },{ 1053, 3 },{ 1056, 4 },{ 1060, 4 },{ 1064, 6 },{ 1070, 6 },{ 1076, 7 },{ 1083, 4 },{ 1087, 6 },{ 1093, 4 },{ 1097, 4 }, + { 1101, 5 },{ 1106, 6 },{ 1112, 7 },{ 1119, 4 },{ 1123, 2 },{ 1125, 5 },{ 1130, 4 },{ 1134, 4 },{ 1138, 6 },{ 1144, 4 },{ 1148, 4 }, + { 1152, 6 },{ 1158, 6 },{ 1164, 6 },{ 1170, 6 },{ 1176, 6 },{ 1182, 2 },{ 1184, 5 },{ 1189, 4 },{ 1193, 6 },{ 1199, 6 },{ 1205, 4 }, + { 1209, 4 },{ 1213, 4 },{ 1217, 4 },{ 1221, 6 },{ 1227, 6 },{ 1233, 6 },{ 1239, 4 },{ 1243, 2 },{ 1245, 8 },{ 1253, 3 },{ 1256, 6 }, + { 1262, 7 },{ 1269, 7 },{ 1276, 4 },{ 1280, 4 },{ 1284, 5 },{ 1289, 5 },{ 1294, 4 },{ 1298, 4 },{ 1302, 6 },{ 1308, 6 },{ 1314, 4 }, + { 1318, 5 },{ 1323, 6 },{ 1329, 7 },{ 1336, 6 },{ 1342, 7 },{ 1349, 6 },{ 1355, 5 },{ 1360, 4 },{ 1364, 4 },{ 1368, 5 },{ 1373, 4 }, + { 1377, 4 },{ 1381, 6 },{ 1387, 2 },{ 1389, 4 },{ 1393, 6 },{ 1399, 6 },{ 1405, 6 },{ 1411, 5 },{ 1416, 6 },{ 1422, 2 },{ 1424, 4 }, + { 1428, 8 },{ 1436, 3 },{ 1439, 7 },{ 1446, 6 },{ 1452, 2 },{ 1454, 4 },{ 1458, 4 },{ 1462, 6 },{ 1468, 6 },{ 1474, 4 },{ 1478, 6 }, + { 1484, 6 },{ 1490, 4 },{ 1494, 4 },{ 1498, 6 },{ 1504, 4 },{ 1508, 6 },{ 1514, 4 },{ 1518, 6 },{ 1524, 6 },{ 1530, 3 },{ 1533, 7 }, + { 1540, 6 },{ 1546, 4 },{ 1550, 5 },{ 1555, 6 },{ 1561, 6 },{ 1567, 6 },{ 1573, 5 },{ 1578, 6 },{ 1584, 8 },{ 1592, 6 },{ 1598, 6 }, + { 1604, 8 }, + }; + static const int g_shapes1[][2] = + { + { 0, 16 } + }; + static const int g_shapes2[64][2] = + { + { 33, 96 },{ 63, 66 },{ 20, 109 },{ 22, 107 },{ 37, 92 },{ 7, 122 },{ 8, 121 },{ 23, 106 }, + { 38, 91 },{ 2, 127 },{ 9, 120 },{ 26, 103 },{ 3, 126 },{ 6, 123 },{ 1, 128 },{ 19, 110 }, + { 15, 114 },{ 124, 5 },{ 72, 57 },{ 115, 14 },{ 125, 4 },{ 70, 59 },{ 100, 29 },{ 60, 69 }, + { 116, 13 },{ 99, 30 },{ 78, 51 },{ 94, 35 },{ 104, 25 },{ 111, 18 },{ 71, 58 },{ 90, 39 }, + { 45, 84 },{ 16, 113 },{ 82, 47 },{ 95, 34 },{ 87, 42 },{ 83, 46 },{ 53, 76 },{ 48, 81 }, + { 68, 61 },{ 105, 24 },{ 98, 31 },{ 88, 41 },{ 75, 54 },{ 43, 86 },{ 52, 77 },{ 117, 12 }, + { 119, 10 },{ 118, 11 },{ 85, 44 },{ 101, 28 },{ 36, 93 },{ 55, 74 },{ 89, 40 },{ 79, 50 }, + { 56, 73 },{ 49, 80 },{ 64, 65 },{ 27, 102 },{ 32, 97 },{ 112, 17 },{ 67, 62 },{ 21, 108 }, + }; + static const int g_shapes3[64][3] = + { + { 148, 160, 240 },{ 132, 212, 205 },{ 136, 233, 187 },{ 175, 237, 143 },{ 6, 186, 232 },{ 33, 142, 232 },{ 131, 123, 142 },{ 131, 96, 186 }, + { 6, 171, 110 },{ 1, 18, 110 },{ 1, 146, 123 },{ 33, 195, 66 },{ 20, 51, 66 },{ 20, 178, 96 },{ 2, 177, 106 },{ 211, 4, 59 }, + { 8, 191, 91 },{ 230, 14, 29 },{ 1, 188, 234 },{ 151, 110, 168 },{ 20, 144, 238 },{ 137, 66, 206 },{ 173, 179, 232 },{ 209, 194, 186 }, + { 239, 165, 142 },{ 131, 152, 242 },{ 214, 54, 12 },{ 140, 219, 201 },{ 190, 150, 231 },{ 156, 135, 241 },{ 185, 227, 167 },{ 145, 210, 59 }, + { 138, 174, 106 },{ 189, 229, 14 },{ 176, 133, 106 },{ 78, 178, 195 },{ 111, 146, 171 },{ 216, 180, 196 },{ 217, 181, 193 },{ 184, 228, 166 }, + { 192, 225, 153 },{ 134, 141, 123 },{ 6, 222, 198 },{ 149, 183, 96 },{ 33, 226, 164 },{ 161, 215, 51 },{ 197, 221, 18 },{ 1, 223, 199 }, + { 154, 163, 110 },{ 20, 236, 169 },{ 157, 204, 66 },{ 1, 202, 220 },{ 20, 170, 235 },{ 203, 158, 66 },{ 162, 155, 110 },{ 6, 201, 218 }, + { 139, 135, 123 },{ 33, 167, 224 },{ 182, 150, 96 },{ 19, 200, 213 },{ 63, 207, 159 },{ 147, 172, 109 },{ 129, 130, 128 },{ 208, 14, 59 }, + }; + + static const int g_shapeList1[] = + { + 0, + }; + + static const int g_shapeList1Collapse[] = + { + 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, + }; + static const int g_shapeList2[] = + { + 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, + 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, + 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, + 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, + 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, + 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, + 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, + 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, + 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, + 122, 123, 124, 125, 126, 127, 128, + }; + static const int g_shapeList2Collapse[] = + { + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, + 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, + 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, + 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, + 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, + 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, + 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, + 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, + 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, + 120, 121, 122, 123, 124, 125, 126, 127, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, + }; + + static const int g_shapeList12[] = + { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, + 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, + 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, + 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, + 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, + 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, + 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, + 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, + 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, + 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, + 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, + 121, 122, 123, 124, 125, 126, 127, 128, + }; + + static const int g_shapeList12Collapse[] = + { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, + 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, + 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, + 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, + 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, + 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, + 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, + 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, + 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, + 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, + 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, + 121, 122, 123, 124, 125, 126, 127, 128, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, + }; + + static const int g_shapeList3[] = + { + 1, 2, 4, 6, 8, 12, 14, 18, 19, 20, 29, + 33, 51, 54, 59, 63, 66, 78, 91, 96, 106, 109, + 110, 111, 123, 128, 129, 130, 131, 132, 133, 134, 135, + 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, + 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, + 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, + 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, + 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, + 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, + 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, + 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, + 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, + 235, 236, 237, 238, 239, 240, 241, 242, + }; + + static const int g_shapeList3Collapse[] = + { + -1, 0, 1, -1, 2, -1, 3, -1, 4, -1, -1, + -1, 5, -1, 6, -1, -1, -1, 7, 8, 9, -1, + -1, -1, -1, -1, -1, -1, -1, 10, -1, -1, -1, + 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 12, -1, -1, 13, + -1, -1, -1, -1, 14, -1, -1, -1, 15, -1, -1, + 16, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, 17, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, 18, -1, -1, -1, -1, 19, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 20, -1, -1, 21, + 22, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, 24, -1, -1, -1, -1, 25, 26, 27, 28, + 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, + 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, + 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, + 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, + 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, + 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, + 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, + 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, + 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, + 139, + }; + + static const int g_shapeList3Short[] = + { + 1, 2, 4, 6, 18, 20, 33, 51, 59, 66, 96, + 106, 110, 123, 131, 132, 136, 142, 143, 146, 148, 160, + 171, 175, 177, 178, 186, 187, 195, 205, 211, 212, 232, + 233, 237, 240, + }; + + static const int g_shapeList3ShortCollapse[] = + { + -1, 0, 1, -1, 2, -1, 3, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 4, -1, 5, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 7, -1, -1, -1, + -1, -1, -1, -1, 8, -1, -1, -1, -1, -1, -1, + 9, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, 10, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 11, -1, -1, -1, + 12, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, 13, -1, -1, -1, -1, -1, -1, -1, 14, + 15, -1, -1, -1, 16, -1, -1, -1, -1, -1, 17, + 18, -1, -1, 19, -1, 20, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, 21, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, 22, -1, -1, -1, 23, + -1, 24, 25, -1, -1, -1, -1, -1, -1, -1, 26, + 27, -1, -1, -1, -1, -1, -1, -1, 28, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 29, -1, -1, -1, + -1, -1, 30, 31, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, 32, 33, -1, -1, -1, 34, -1, -1, 35, -1, + -1, + }; + + static const int g_shapeListAll[] = + { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, + 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, + 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, + 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, + 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, + 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, + 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, + 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, + 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, + 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, + 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, + 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, + 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, + 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, + 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, + 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, + 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, + 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, + 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, + 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, + 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, + 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, + 242, + }; + + static const int g_numShapes1 = sizeof(g_shapeList1) / sizeof(g_shapeList1[0]); + static const int g_numShapes2 = sizeof(g_shapeList2) / sizeof(g_shapeList2[0]); + static const int g_numShapes12 = sizeof(g_shapeList12) / sizeof(g_shapeList12[0]); + static const int g_numShapes3 = sizeof(g_shapeList3) / sizeof(g_shapeList3[0]); + static const int g_numShapes3Short = sizeof(g_shapeList3Short) / sizeof(g_shapeList3Short[0]); + static const int g_numShapesAll = sizeof(g_shapeListAll) / sizeof(g_shapeListAll[0]); + static const int g_numFragments = sizeof(g_fragments) / sizeof(g_fragments[0]); + + static const int g_maxFragmentsPerMode = (g_numShapes2 > g_numShapes3) ? g_numShapes2 : g_numShapes3; + } + + namespace BC6HData + { + enum EField + { + NA, // N/A + M, // Mode + D, // Shape + RW, + RX, + RY, + RZ, + GW, + GX, + GY, + GZ, + BW, + BX, + BY, + BZ, + }; + + struct ModeDescriptor + { + EField m_eField; + uint8_t m_uBit; + }; + + const ModeDescriptor g_modeDescriptors[14][82] = + { + { // Mode 1 (0x00) - 10 5 5 5 + { M, 0 },{ M, 1 },{ GY, 4 },{ BY, 4 },{ BZ, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { GZ, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 2 (0x01) - 7 6 6 6 + { M, 0 },{ M, 1 },{ GY, 5 },{ GZ, 4 },{ GZ, 5 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ BZ, 0 },{ BZ, 1 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ BY, 5 },{ BZ, 2 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BZ, 3 },{ BZ, 5 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { RY, 5 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ RZ, 5 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 3 (0x02) - 11 5 4 4 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RW,10 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GW,10 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BW,10 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 4 (0x06) - 11 4 5 4 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RW,10 }, + { GZ, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GW,10 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BW,10 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ BZ, 0 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ GY, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 5 (0x0a) - 11 4 4 5 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RW,10 }, + { BY, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GW,10 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BW,10 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ BZ, 1 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ BZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 6 (0x0e) - 9 5 5 5 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { GZ, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 7 (0x12) - 8 6 5 5 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ GZ, 4 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ BZ, 2 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BZ, 3 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { RY, 5 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ RZ, 5 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 8 (0x16) - 8 5 6 5 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ BZ, 0 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GY, 5 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ GZ, 5 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { GZ, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BZ, 1 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 9 (0x1a) - 8 5 5 6 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ BZ, 1 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ BY, 5 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BZ, 5 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { GZ, 4 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { BZ, 0 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { BZ, 2 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ BZ, 3 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 10 (0x1e) - 6 6 6 6 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ GZ, 4 },{ BZ, 0 },{ BZ, 1 },{ BY, 4 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GY, 5 },{ BY, 5 },{ BZ, 2 },{ GY, 4 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ GZ, 5 },{ BZ, 3 },{ BZ, 5 },{ BZ, 4 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ GY, 0 },{ GY, 1 },{ GY, 2 },{ GY, 3 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GZ, 0 },{ GZ, 1 },{ GZ, 2 },{ GZ, 3 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BY, 0 },{ BY, 1 },{ BY, 2 },{ BY, 3 },{ RY, 0 },{ RY, 1 },{ RY, 2 },{ RY, 3 },{ RY, 4 }, + { RY, 5 },{ RZ, 0 },{ RZ, 1 },{ RZ, 2 },{ RZ, 3 },{ RZ, 4 },{ RZ, 5 },{ D, 0 },{ D, 1 },{ D, 2 }, + { D, 3 },{ D, 4 }, + }, + + { // Mode 11 (0x03) - 10 10 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ RX, 6 },{ RX, 7 },{ RX, 8 },{ RX, 9 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GX, 6 },{ GX, 7 },{ GX, 8 },{ GX, 9 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BX, 6 },{ BX, 7 },{ BX, 8 },{ BX, 9 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 }, + }, + + { // Mode 12 (0x07) - 11 9 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ RX, 6 },{ RX, 7 },{ RX, 8 },{ RW,10 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GX, 6 },{ GX, 7 },{ GX, 8 },{ GW,10 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BX, 6 },{ BX, 7 },{ BX, 8 },{ BW,10 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 }, + }, + + { // Mode 13 (0x0b) - 12 8 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RX, 4 }, + { RX, 5 },{ RX, 6 },{ RX, 7 },{ RW,11 },{ RW,10 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GX, 4 }, + { GX, 5 },{ GX, 6 },{ GX, 7 },{ GW,11 },{ GW,10 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BX, 4 }, + { BX, 5 },{ BX, 6 },{ BX, 7 },{ BW,11 },{ BW,10 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 }, + }, + + { // Mode 14 (0x0f) - 16 4 + { M, 0 },{ M, 1 },{ M, 2 },{ M, 3 },{ M, 4 },{ RW, 0 },{ RW, 1 },{ RW, 2 },{ RW, 3 },{ RW, 4 }, + { RW, 5 },{ RW, 6 },{ RW, 7 },{ RW, 8 },{ RW, 9 },{ GW, 0 },{ GW, 1 },{ GW, 2 },{ GW, 3 },{ GW, 4 }, + { GW, 5 },{ GW, 6 },{ GW, 7 },{ GW, 8 },{ GW, 9 },{ BW, 0 },{ BW, 1 },{ BW, 2 },{ BW, 3 },{ BW, 4 }, + { BW, 5 },{ BW, 6 },{ BW, 7 },{ BW, 8 },{ BW, 9 },{ RX, 0 },{ RX, 1 },{ RX, 2 },{ RX, 3 },{ RW,15 }, + { RW,14 },{ RW,13 },{ RW,12 },{ RW,11 },{ RW,10 },{ GX, 0 },{ GX, 1 },{ GX, 2 },{ GX, 3 },{ GW,15 }, + { GW,14 },{ GW,13 },{ GW,12 },{ GW,11 },{ GW,10 },{ BX, 0 },{ BX, 1 },{ BX, 2 },{ BX, 3 },{ BW,15 }, + { BW,14 },{ BW,13 },{ BW,12 },{ BW,11 },{ BW,10 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 },{ NA, 0 }, + { NA, 0 },{ NA, 0 }, + }, + }; + } + + struct PackingVector + { + uint32_t m_vector[4]; + int m_offset; + + void Init() + { + for (int i = 0; i < 4; i++) + m_vector[i] = 0; + + m_offset = 0; + } + + inline void Pack(ParallelMath::ScalarUInt16 value, int bits) + { + int vOffset = m_offset >> 5; + int bitOffset = m_offset & 0x1f; + + m_vector[vOffset] |= (static_cast<uint32_t>(value) << bitOffset) & static_cast<uint32_t>(0xffffffff); + + int overflowBits = bitOffset + bits - 32; + if (overflowBits > 0) + m_vector[vOffset + 1] |= (static_cast<uint32_t>(value) >> (bits - overflowBits)); + + m_offset += bits; + } + + inline void Flush(uint8_t* output) + { + assert(m_offset == 128); + + for (int v = 0; v < 4; v++) + { + uint32_t chunk = m_vector[v]; + for (int b = 0; b < 4; b++) + output[v * 4 + b] = static_cast<uint8_t>((chunk >> (b * 8)) & 0xff); + } + } + }; + + + struct UnpackingVector + { + uint32_t m_vector[4]; + + void Init(const uint8_t *bytes) + { + for (int i = 0; i < 4; i++) + m_vector[i] = 0; + + for (int b = 0; b < 16; b++) + m_vector[b / 4] |= (bytes[b] << ((b % 4) * 8)); + } + + inline ParallelMath::ScalarUInt16 Unpack(int bits) + { + uint32_t bitMask = (1 << bits) - 1; + + ParallelMath::ScalarUInt16 result = static_cast<ParallelMath::ScalarUInt16>(m_vector[0] & bitMask); + + for (int i = 0; i < 4; i++) + { + m_vector[i] >>= bits; + if (i != 3) + m_vector[i] |= (m_vector[i + 1] & bitMask) << (32 - bits); + } + + return result; + } + }; + + void ComputeTweakFactors(int tweak, int range, float *outFactors) + { + int totalUnits = range - 1; + int minOutsideUnits = ((tweak >> 1) & 1); + int maxOutsideUnits = (tweak & 1); + int insideUnits = totalUnits - minOutsideUnits - maxOutsideUnits; + + outFactors[0] = -static_cast<float>(minOutsideUnits) / static_cast<float>(insideUnits); + outFactors[1] = static_cast<float>(maxOutsideUnits) / static_cast<float>(insideUnits) + 1.0f; + } + + ParallelMath::Float ScaleHDRValue(const ParallelMath::Float &v, bool isSigned) + { + if (isSigned) + { + ParallelMath::Float offset = ParallelMath::Select(ParallelMath::Less(v, ParallelMath::MakeFloatZero()), ParallelMath::MakeFloat(-30.0f), ParallelMath::MakeFloat(30.0f)); + return (v * 32.0f + offset) / 31.0f; + } + else + return (v * 64.0f + 30.0f) / 31.0f; + } + + ParallelMath::SInt16 UnscaleHDRValueSigned(const ParallelMath::SInt16 &v) + { +#ifdef CVTT_ENABLE_ASSERTS + for (int i = 0; i < ParallelMath::ParallelSize; i++) + assert(ParallelMath::Extract(v, i) != -32768) +#endif + + ParallelMath::Int16CompFlag negative = ParallelMath::Less(v, ParallelMath::MakeSInt16(0)); + ParallelMath::UInt15 absComp = ParallelMath::LosslessCast<ParallelMath::UInt15>::Cast(ParallelMath::Select(negative, ParallelMath::SInt16(ParallelMath::MakeSInt16(0) - v), v)); + + ParallelMath::UInt31 multiplied = ParallelMath::XMultiply(absComp, ParallelMath::MakeUInt15(31)); + ParallelMath::UInt31 shifted = ParallelMath::RightShift(multiplied, 5); + ParallelMath::UInt15 absCompScaled = ParallelMath::ToUInt15(shifted); + ParallelMath::SInt16 signBits = ParallelMath::SelectOrZero(negative, ParallelMath::MakeSInt16(-32768)); + + return ParallelMath::LosslessCast<ParallelMath::SInt16>::Cast(absCompScaled) | signBits; + } + + ParallelMath::UInt15 UnscaleHDRValueUnsigned(const ParallelMath::UInt16 &v) + { + return ParallelMath::ToUInt15(ParallelMath::RightShift(ParallelMath::XMultiply(v, ParallelMath::MakeUInt15(31)), 6)); + } + + void UnscaleHDREndpoints(const ParallelMath::AInt16 inEP[2][3], ParallelMath::AInt16 outEP[2][3], bool isSigned) + { + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + { + if (isSigned) + outEP[epi][ch] = ParallelMath::LosslessCast<ParallelMath::AInt16>::Cast(UnscaleHDRValueSigned(ParallelMath::LosslessCast<ParallelMath::SInt16>::Cast(inEP[epi][ch]))); + else + outEP[epi][ch] = ParallelMath::LosslessCast<ParallelMath::AInt16>::Cast(UnscaleHDRValueUnsigned(ParallelMath::LosslessCast<ParallelMath::UInt16>::Cast(inEP[epi][ch]))); + } + } + } + + template<int TVectorSize> + class UnfinishedEndpoints + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::SInt32 MSInt32; + + UnfinishedEndpoints() + { + } + + UnfinishedEndpoints(const MFloat *base, const MFloat *offset) + { + for (int ch = 0; ch < TVectorSize; ch++) + m_base[ch] = base[ch]; + for (int ch = 0; ch < TVectorSize; ch++) + m_offset[ch] = offset[ch]; + } + + UnfinishedEndpoints(const UnfinishedEndpoints& other) + { + for (int ch = 0; ch < TVectorSize; ch++) + m_base[ch] = other.m_base[ch]; + for (int ch = 0; ch < TVectorSize; ch++) + m_offset[ch] = other.m_offset[ch]; + } + + void FinishHDRUnsigned(int tweak, int range, MSInt16 *outEP0, MSInt16 *outEP1, ParallelMath::RoundTowardNearestForScope *roundingMode) + { + float tweakFactors[2]; + ComputeTweakFactors(tweak, range, tweakFactors); + + for (int ch = 0; ch < TVectorSize; ch++) + { + MUInt15 channelEPs[2]; + for (int epi = 0; epi < 2; epi++) + { + MFloat f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[epi], 0.0f, 31743.0f); + channelEPs[epi] = ParallelMath::RoundAndConvertToU15(f, roundingMode); + } + + outEP0[ch] = ParallelMath::LosslessCast<MSInt16>::Cast(channelEPs[0]); + outEP1[ch] = ParallelMath::LosslessCast<MSInt16>::Cast(channelEPs[1]); + } + } + + void FinishHDRSigned(int tweak, int range, MSInt16* outEP0, MSInt16* outEP1, ParallelMath::RoundTowardNearestForScope* roundingMode) + { + float tweakFactors[2]; + ComputeTweakFactors(tweak, range, tweakFactors); + + for (int ch = 0; ch < TVectorSize; ch++) + { + MSInt16 channelEPs[2]; + for (int epi = 0; epi < 2; epi++) + { + MFloat f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[epi], -31743.0f, 31743.0f); + channelEPs[epi] = ParallelMath::RoundAndConvertToS16(f, roundingMode); + } + + outEP0[ch] = channelEPs[0]; + outEP1[ch] = channelEPs[1]; + } + } + + void FinishLDR(int tweak, int range, MUInt15* outEP0, MUInt15* outEP1) + { + ParallelMath::RoundTowardNearestForScope roundingMode; + + float tweakFactors[2]; + ComputeTweakFactors(tweak, range, tweakFactors); + + for (int ch = 0; ch < TVectorSize; ch++) + { + MFloat ep0f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[0], 0.0f, 255.0f); + MFloat ep1f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[1], 0.0f, 255.0f); + outEP0[ch] = ParallelMath::RoundAndConvertToU15(ep0f, &roundingMode); + outEP1[ch] = ParallelMath::RoundAndConvertToU15(ep1f, &roundingMode); + } + } + + template<int TNewVectorSize> + UnfinishedEndpoints<TNewVectorSize> ExpandTo(float filler) + { + MFloat newBase[TNewVectorSize]; + MFloat newOffset[TNewVectorSize]; + + for (int ch = 0; ch < TNewVectorSize && ch < TVectorSize; ch++) + { + newBase[ch] = m_base[ch]; + newOffset[ch] = m_offset[ch]; + } + + MFloat fillerV = ParallelMath::MakeFloat(filler); + + for (int ch = TVectorSize; ch < TNewVectorSize; ch++) + { + newBase[ch] = fillerV; + newOffset[ch] = ParallelMath::MakeFloatZero(); + } + + return UnfinishedEndpoints<TNewVectorSize>(newBase, newOffset); + } + + private: + MFloat m_base[TVectorSize]; + MFloat m_offset[TVectorSize]; + }; + + template<int TMatrixSize> + class PackedCovarianceMatrix + { + public: + // 0: xx, + // 1: xy, yy + // 3: xz, yz, zz + // 6: xw, yw, zw, ww + // ... etc. + static const int PyramidSize = (TMatrixSize * (TMatrixSize + 1)) / 2; + + typedef ParallelMath::Float MFloat; + + PackedCovarianceMatrix() + { + for (int i = 0; i < PyramidSize; i++) + m_values[i] = ParallelMath::MakeFloatZero(); + } + + void Add(const ParallelMath::Float *vec, const ParallelMath::Float &weight) + { + int index = 0; + for (int row = 0; row < TMatrixSize; row++) + { + for (int col = 0; col <= row; col++) + { + m_values[index] = m_values[index] + vec[row] * vec[col] * weight; + index++; + } + } + } + + void Product(MFloat *outVec, const MFloat *inVec) + { + for (int row = 0; row < TMatrixSize; row++) + { + MFloat sum = ParallelMath::MakeFloatZero(); + + int index = (row * (row + 1)) >> 1; + for (int col = 0; col < TMatrixSize; col++) + { + sum = sum + inVec[col] * m_values[index]; + if (col >= row) + index += col + 1; + else + index++; + } + + outVec[row] = sum; + } + } + + private: + ParallelMath::Float m_values[PyramidSize]; + }; + + static const int NumEndpointSelectorPasses = 3; + + template<int TVectorSize, int TIterationCount> + class EndpointSelector + { + public: + typedef ParallelMath::Float MFloat; + + EndpointSelector() + { + for (int ch = 0; ch < TVectorSize; ch++) + { + m_centroid[ch] = ParallelMath::MakeFloatZero(); + m_direction[ch] = ParallelMath::MakeFloatZero(); + } + m_weightTotal = ParallelMath::MakeFloatZero(); + m_minDist = ParallelMath::MakeFloat(FLT_MAX); + m_maxDist = ParallelMath::MakeFloat(-FLT_MAX); + } + + void ContributePass(const MFloat *value, int pass, const MFloat &weight) + { + if (pass == 0) + ContributeCentroid(value, weight); + else if (pass == 1) + ContributeDirection(value, weight); + else if (pass == 2) + ContributeMinMax(value); + } + + void FinishPass(int pass) + { + if (pass == 0) + FinishCentroid(); + else if (pass == 1) + FinishDirection(); + } + + UnfinishedEndpoints<TVectorSize> GetEndpoints(const float channelWeights[TVectorSize]) const + { + MFloat unweightedBase[TVectorSize]; + MFloat unweightedOffset[TVectorSize]; + + for (int ch = 0; ch < TVectorSize; ch++) + { + MFloat min = m_centroid[ch] + m_direction[ch] * m_minDist; + MFloat max = m_centroid[ch] + m_direction[ch] * m_maxDist; + + float safeWeight = channelWeights[ch]; + if (safeWeight == 0.f) + safeWeight = 1.0f; + + unweightedBase[ch] = min / channelWeights[ch]; + unweightedOffset[ch] = (max - min) / channelWeights[ch]; + } + + return UnfinishedEndpoints<TVectorSize>(unweightedBase, unweightedOffset); + } + + private: + void ContributeCentroid(const MFloat *value, const MFloat &weight) + { + for (int ch = 0; ch < TVectorSize; ch++) + m_centroid[ch] = m_centroid[ch] + value[ch] * weight; + m_weightTotal = m_weightTotal + weight; + } + + void FinishCentroid() + { + MFloat denom = m_weightTotal; + ParallelMath::MakeSafeDenominator(denom); + + for (int ch = 0; ch < TVectorSize; ch++) + m_centroid[ch] = m_centroid[ch] / denom; + } + + void ContributeDirection(const MFloat *value, const MFloat &weight) + { + MFloat diff[TVectorSize]; + for (int ch = 0; ch < TVectorSize; ch++) + diff[ch] = value[ch] - m_centroid[ch]; + + m_covarianceMatrix.Add(diff, weight); + } + + void FinishDirection() + { + MFloat approx[TVectorSize]; + for (int ch = 0; ch < TVectorSize; ch++) + approx[ch] = ParallelMath::MakeFloat(1.0f); + + for (int i = 0; i < TIterationCount; i++) + { + MFloat product[TVectorSize]; + m_covarianceMatrix.Product(product, approx); + + MFloat largestComponent = product[0]; + for (int ch = 1; ch < TVectorSize; ch++) + largestComponent = ParallelMath::Max(largestComponent, product[ch]); + + // product = largestComponent*newApprox + ParallelMath::MakeSafeDenominator(largestComponent); + for (int ch = 0; ch < TVectorSize; ch++) + approx[ch] = product[ch] / largestComponent; + } + + // Normalize + MFloat approxLen = ParallelMath::MakeFloatZero(); + for (int ch = 0; ch < TVectorSize; ch++) + approxLen = approxLen + approx[ch] * approx[ch]; + + approxLen = ParallelMath::Sqrt(approxLen); + + ParallelMath::MakeSafeDenominator(approxLen); + + for (int ch = 0; ch < TVectorSize; ch++) + m_direction[ch] = approx[ch] / approxLen; + } + + void ContributeMinMax(const MFloat *value) + { + MFloat dist = ParallelMath::MakeFloatZero(); + for (int ch = 0; ch < TVectorSize; ch++) + dist = dist + m_direction[ch] * (value[ch] - m_centroid[ch]); + + m_minDist = ParallelMath::Min(m_minDist, dist); + m_maxDist = ParallelMath::Max(m_maxDist, dist); + } + + ParallelMath::Float m_centroid[TVectorSize]; + ParallelMath::Float m_direction[TVectorSize]; + PackedCovarianceMatrix<TVectorSize> m_covarianceMatrix; + ParallelMath::Float m_weightTotal; + + ParallelMath::Float m_minDist; + ParallelMath::Float m_maxDist; + }; + + static const ParallelMath::UInt16 g_weightReciprocals[] = + { + ParallelMath::MakeUInt16(0), // -1 + ParallelMath::MakeUInt16(0), // 0 + ParallelMath::MakeUInt16(32768), // 1 + ParallelMath::MakeUInt16(16384), // 2 + ParallelMath::MakeUInt16(10923), // 3 + ParallelMath::MakeUInt16(8192), // 4 + ParallelMath::MakeUInt16(6554), // 5 + ParallelMath::MakeUInt16(5461), // 6 + ParallelMath::MakeUInt16(4681), // 7 + ParallelMath::MakeUInt16(4096), // 8 + ParallelMath::MakeUInt16(3641), // 9 + ParallelMath::MakeUInt16(3277), // 10 + ParallelMath::MakeUInt16(2979), // 11 + ParallelMath::MakeUInt16(2731), // 12 + ParallelMath::MakeUInt16(2521), // 13 + ParallelMath::MakeUInt16(2341), // 14 + ParallelMath::MakeUInt16(2185), // 15 + }; + + template<int TVectorSize> + class IndexSelector + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::AInt16 MAInt16; + typedef ParallelMath::SInt32 MSInt32; + typedef ParallelMath::UInt31 MUInt31; + + template<class TInterpolationEPType, class TColorEPType> + void Init(const float *channelWeights, const TInterpolationEPType interpolationEndPoints[2][TVectorSize], const TColorEPType colorSpaceEndpoints[2][TVectorSize], int range) + { + // In BC6H, the interpolation endpoints are higher-precision than the endpoints in color space. + // We need to select indexes using the color-space endpoints. + + m_isUniform = true; + for (int ch = 1; ch < TVectorSize; ch++) + { + if (channelWeights[ch] != channelWeights[0]) + m_isUniform = false; + } + + // To work with channel weights, we need something where: + // pxDiff = px - ep[0] + // epDiff = ep[1] - ep[0] + // + // weightedEPDiff = epDiff * channelWeights + // normalizedWeightedAxis = weightedEPDiff / len(weightedEPDiff) + // normalizedIndex = dot(pxDiff * channelWeights, normalizedWeightedAxis) / len(weightedEPDiff) + // index = normalizedIndex * maxValue + // + // Equivalent to: + // axis = channelWeights * maxValue * epDiff * channelWeights / lenSquared(epDiff * channelWeights) + // index = dot(axis, pxDiff) + + for (int ep = 0; ep < 2; ep++) + for (int ch = 0; ch < TVectorSize; ch++) + m_endPoint[ep][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(interpolationEndPoints[ep][ch]); + + m_range = range; + m_maxValue = static_cast<float>(range - 1); + + MFloat epDiffWeighted[TVectorSize]; + for (int ch = 0; ch < TVectorSize; ch++) + { + m_origin[ch] = ParallelMath::ToFloat(colorSpaceEndpoints[0][ch]); + MFloat opposingOriginCh = ParallelMath::ToFloat(colorSpaceEndpoints[1][ch]); + epDiffWeighted[ch] = (opposingOriginCh - m_origin[ch]) * channelWeights[ch]; + } + + MFloat lenSquared = epDiffWeighted[0] * epDiffWeighted[0]; + for (int ch = 1; ch < TVectorSize; ch++) + lenSquared = lenSquared + epDiffWeighted[ch] * epDiffWeighted[ch]; + + ParallelMath::MakeSafeDenominator(lenSquared); + + MFloat maxValueDividedByLengthSquared = ParallelMath::MakeFloat(m_maxValue) / lenSquared; + + for (int ch = 0; ch < TVectorSize; ch++) + m_axis[ch] = epDiffWeighted[ch] * channelWeights[ch] * maxValueDividedByLengthSquared; + } + + template<bool TSigned> + void Init(const float channelWeights[TVectorSize], const MUInt15 endPoints[2][TVectorSize], int range) + { + MAInt16 converted[2][TVectorSize]; + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < TVectorSize; ch++) + converted[epi][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(endPoints[epi][ch]); + + Init<MUInt15, MUInt15>(channelWeights, endPoints, endPoints, range); + } + + void ReconstructLDR_BC7(const MUInt15 &index, MUInt15* pixel, int numRealChannels) + { + MUInt15 weight = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(g_weightReciprocals[m_range], index) + 256, 9)); + + for (int ch = 0; ch < numRealChannels; ch++) + { + MUInt15 ep0f = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::CompactMultiply((ParallelMath::MakeUInt15(64) - weight), ParallelMath::LosslessCast<MUInt15>::Cast(m_endPoint[0][ch]))); + MUInt15 ep1f = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::CompactMultiply(weight, ParallelMath::LosslessCast<MUInt15>::Cast(m_endPoint[1][ch]))); + pixel[ch] = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ep0f + ep1f + ParallelMath::MakeUInt15(32), 6)); + } + } + + void ReconstructLDRPrecise(const MUInt15 &index, MUInt15* pixel, int numRealChannels) + { + MUInt15 weight = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(g_weightReciprocals[m_range], index) + 64, 7)); + + for (int ch = 0; ch < numRealChannels; ch++) + { + MUInt15 ep0f = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::CompactMultiply((ParallelMath::MakeUInt15(256) - weight), ParallelMath::LosslessCast<MUInt15>::Cast(m_endPoint[0][ch]))); + MUInt15 ep1f = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::CompactMultiply(weight, ParallelMath::LosslessCast<MUInt15>::Cast(m_endPoint[1][ch]))); + pixel[ch] = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ep0f + ep1f + ParallelMath::MakeUInt15(128), 8)); + } + } + + void ReconstructLDR_BC7(const MUInt15 &index, MUInt15* pixel) + { + ReconstructLDR_BC7(index, pixel, TVectorSize); + } + + void ReconstructLDRPrecise(const MUInt15 &index, MUInt15* pixel) + { + ReconstructLDRPrecise(index, pixel, TVectorSize); + } + + MUInt15 SelectIndexLDR(const MFloat* pixel, const ParallelMath::RoundTowardNearestForScope* rtn) const + { + MFloat dist = (pixel[0] - m_origin[0]) * m_axis[0]; + for (int ch = 1; ch < TVectorSize; ch++) + dist = dist + (pixel[ch] - m_origin[ch]) * m_axis[ch]; + + return ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(dist, 0.0f, m_maxValue), rtn); + } + + protected: + MAInt16 m_endPoint[2][TVectorSize]; + + private: + MFloat m_origin[TVectorSize]; + MFloat m_axis[TVectorSize]; + int m_range; + float m_maxValue; + bool m_isUniform; + }; + + + template<int TVectorSize> + class IndexSelectorHDR : public IndexSelector<TVectorSize> + { + public: + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt31 MUInt31; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::SInt32 MSInt32; + typedef ParallelMath::Float MFloat; + + private: + + MUInt15 InvertSingle(const MUInt15& anIndex) const + { + MUInt15 inverted = m_maxValueMinusOne - anIndex; + return ParallelMath::Select(m_isInverted, inverted, anIndex); + } + + void ReconstructHDRSignedUninverted(const MUInt15 &index, MSInt16* pixel) const + { + MUInt15 weight = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(g_weightReciprocals[m_range], index) + 256, 9)); + + for (int ch = 0; ch < TVectorSize; ch++) + { + MSInt16 ep0 = ParallelMath::LosslessCast<MSInt16>::Cast(this->m_endPoint[0][ch]); + MSInt16 ep1 = ParallelMath::LosslessCast<MSInt16>::Cast(this->m_endPoint[1][ch]); + + MSInt32 pixel32 = ParallelMath::XMultiply((ParallelMath::MakeUInt15(64) - weight), ep0) + ParallelMath::XMultiply(weight, ep1); + + pixel32 = ParallelMath::RightShift(pixel32 + ParallelMath::MakeSInt32(32), 6); + + pixel[ch] = UnscaleHDRValueSigned(ParallelMath::ToSInt16(pixel32)); + } + } + + void ReconstructHDRUnsignedUninverted(const MUInt15 &index, MSInt16* pixel) const + { + MUInt15 weight = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(g_weightReciprocals[m_range], index) + 256, 9)); + + for (int ch = 0; ch < TVectorSize; ch++) + { + MUInt16 ep0 = ParallelMath::LosslessCast<MUInt16>::Cast(this->m_endPoint[0][ch]); + MUInt16 ep1 = ParallelMath::LosslessCast<MUInt16>::Cast(this->m_endPoint[1][ch]); + + MUInt31 pixel31 = ParallelMath::XMultiply((ParallelMath::MakeUInt15(64) - weight), ep0) + ParallelMath::XMultiply(weight, ep1); + + pixel31 = ParallelMath::RightShift(pixel31 + ParallelMath::MakeUInt31(32), 6); + + pixel[ch] = ParallelMath::LosslessCast<MSInt16>::Cast(UnscaleHDRValueUnsigned(ParallelMath::ToUInt16(pixel31))); + } + } + + MFloat ErrorForInterpolatorComponent(int index, int ch, const MFloat *pixel) const + { + MFloat diff = pixel[ch] - m_reconstructedInterpolators[index][ch]; + return diff * diff; + } + + MFloat ErrorForInterpolator(int index, const MFloat *pixel) const + { + MFloat error = ErrorForInterpolatorComponent(index, 0, pixel); + for (int ch = 1; ch < TVectorSize; ch++) + error = error + ErrorForInterpolatorComponent(index, ch, pixel); + return error; + } + + public: + + void InitHDR(int range, bool isSigned, bool fastIndexing, const float *channelWeights) + { + assert(range <= 16); + + m_range = range; + + m_isInverted = ParallelMath::MakeBoolInt16(false); + m_maxValueMinusOne = ParallelMath::MakeUInt15(static_cast<uint16_t>(range - 1)); + + if (!fastIndexing) + { + for (int i = 0; i < range; i++) + { + MSInt16 recon2CL[TVectorSize]; + + if (isSigned) + ReconstructHDRSignedUninverted(ParallelMath::MakeUInt15(static_cast<uint16_t>(i)), recon2CL); + else + ReconstructHDRUnsignedUninverted(ParallelMath::MakeUInt15(static_cast<uint16_t>(i)), recon2CL); + + for (int ch = 0; ch < TVectorSize; ch++) + m_reconstructedInterpolators[i][ch] = ParallelMath::TwosCLHalfToFloat(recon2CL[ch]) * channelWeights[ch]; + } + } + } + + void ReconstructHDRSigned(const MUInt15 &index, MSInt16* pixel) const + { + ReconstructHDRSignedUninverted(InvertSingle(index), pixel); + } + + void ReconstructHDRUnsigned(const MUInt15 &index, MSInt16* pixel) const + { + ReconstructHDRUnsignedUninverted(InvertSingle(index), pixel); + } + + void ConditionalInvert(const ParallelMath::Int16CompFlag &invert) + { + m_isInverted = invert; + } + + MUInt15 SelectIndexHDRSlow(const MFloat* pixel, const ParallelMath::RoundTowardNearestForScope*) const + { + MUInt15 index = ParallelMath::MakeUInt15(0); + + MFloat bestError = ErrorForInterpolator(0, pixel); + for (int i = 1; i < m_range; i++) + { + MFloat error = ErrorForInterpolator(i, pixel); + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(error, bestError); + ParallelMath::ConditionalSet(index, ParallelMath::FloatFlagToInt16(errorBetter), ParallelMath::MakeUInt15(static_cast<uint16_t>(i))); + bestError = ParallelMath::Min(bestError, error); + } + + return InvertSingle(index); + } + + MUInt15 SelectIndexHDRFast(const MFloat* pixel, const ParallelMath::RoundTowardNearestForScope* rtn) const + { + return InvertSingle(this->SelectIndexLDR(pixel, rtn)); + } + + private: + MFloat m_reconstructedInterpolators[16][TVectorSize]; + ParallelMath::Int16CompFlag m_isInverted; + MUInt15 m_maxValueMinusOne; + int m_range; + }; + + // Solve for a, b where v = a*t + b + // This allows endpoints to be mapped to where T=0 and T=1 + // Least squares from totals: + // a = (tv - t*v/w)/(tt - t*t/w) + // b = (v - a*t)/w + template<int TVectorSize> + class EndpointRefiner + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::AInt16 MAInt16; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::SInt32 MSInt32; + + MFloat m_tv[TVectorSize]; + MFloat m_v[TVectorSize]; + MFloat m_tt; + MFloat m_t; + MFloat m_w; + int m_wu; + + float m_rcpMaxIndex; + float m_channelWeights[TVectorSize]; + float m_rcpChannelWeights[TVectorSize]; + + void Init(int indexRange, const float channelWeights[TVectorSize]) + { + for (int ch = 0; ch < TVectorSize; ch++) + { + m_tv[ch] = ParallelMath::MakeFloatZero(); + m_v[ch] = ParallelMath::MakeFloatZero(); + } + m_tt = ParallelMath::MakeFloatZero(); + m_t = ParallelMath::MakeFloatZero(); + m_w = ParallelMath::MakeFloatZero(); + + m_rcpMaxIndex = 1.0f / static_cast<float>(indexRange - 1); + + for (int ch = 0; ch < TVectorSize; ch++) + { + m_channelWeights[ch] = channelWeights[ch]; + m_rcpChannelWeights[ch] = 1.0f; + if (m_channelWeights[ch] != 0.0f) + m_rcpChannelWeights[ch] = 1.0f / channelWeights[ch]; + } + + m_wu = 0; + } + + void ContributePW(const MFloat *pwFloatPixel, const MUInt15 &index, const MFloat &weight) + { + MFloat t = ParallelMath::ToFloat(index) * m_rcpMaxIndex; + + for (int ch = 0; ch < TVectorSize; ch++) + { + MFloat v = pwFloatPixel[ch] * weight; + + m_tv[ch] = m_tv[ch] + t * v; + m_v[ch] = m_v[ch] + v; + } + m_tt = m_tt + weight * t * t; + m_t = m_t + weight * t; + m_w = m_w + weight; + } + + void ContributeUnweightedPW(const MFloat *pwFloatPixel, const MUInt15 &index, int numRealChannels) + { + MFloat t = ParallelMath::ToFloat(index) * m_rcpMaxIndex; + + for (int ch = 0; ch < numRealChannels; ch++) + { + MFloat v = pwFloatPixel[ch]; + + m_tv[ch] = m_tv[ch] + t * v; + m_v[ch] = m_v[ch] + v; + } + m_tt = m_tt + t * t; + m_t = m_t + t; + m_wu++; + } + + void ContributeUnweightedPW(const MFloat *floatPixel, const MUInt15 &index) + { + ContributeUnweightedPW(floatPixel, index, TVectorSize); + } + + void GetRefinedEndpoints(MFloat endPoint[2][TVectorSize]) + { + // a = (tv - t*v/w)/(tt - t*t/w) + // b = (v - a*t)/w + MFloat w = m_w + ParallelMath::MakeFloat(static_cast<float>(m_wu)); + + ParallelMath::MakeSafeDenominator(w); + MFloat wRcp = ParallelMath::Reciprocal(w); + + MFloat adenom = (m_tt * w - m_t * m_t) * wRcp; + + ParallelMath::FloatCompFlag adenomZero = ParallelMath::Equal(adenom, ParallelMath::MakeFloatZero()); + ParallelMath::ConditionalSet(adenom, adenomZero, ParallelMath::MakeFloat(1.0f)); + + for (int ch = 0; ch < TVectorSize; ch++) + { + /* + if (adenom == 0.0) + p1 = p2 = er.v / er.w; + else + { + float4 a = (er.tv - er.t*er.v / er.w) / adenom; + float4 b = (er.v - a * er.t) / er.w; + p1 = b; + p2 = a + b; + } + */ + + MFloat a = (m_tv[ch] - m_t * m_v[ch] * wRcp) / adenom; + MFloat b = (m_v[ch] - a * m_t) * wRcp; + + MFloat p1 = b; + MFloat p2 = a + b; + + ParallelMath::ConditionalSet(p1, adenomZero, (m_v[ch] * wRcp)); + ParallelMath::ConditionalSet(p2, adenomZero, p1); + + // Unweight + float inverseWeight = m_rcpChannelWeights[ch]; + + endPoint[0][ch] = p1 * inverseWeight; + endPoint[1][ch] = p2 * inverseWeight; + } + } + + void GetRefinedEndpointsLDR(MUInt15 endPoint[2][TVectorSize], int numRealChannels, const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + MFloat floatEndPoint[2][TVectorSize]; + GetRefinedEndpoints(floatEndPoint); + + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < TVectorSize; ch++) + endPoint[epi][ch] = ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(floatEndPoint[epi][ch], 0.0f, 255.0f), roundingMode); + } + + void GetRefinedEndpointsLDR(MUInt15 endPoint[2][TVectorSize], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + GetRefinedEndpointsLDR(endPoint, TVectorSize, roundingMode); + } + + void GetRefinedEndpointsHDR(MSInt16 endPoint[2][TVectorSize], bool isSigned, const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + MFloat floatEndPoint[2][TVectorSize]; + GetRefinedEndpoints(floatEndPoint); + + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < TVectorSize; ch++) + { + MFloat f = floatEndPoint[epi][ch]; + if (isSigned) + endPoint[epi][ch] = ParallelMath::LosslessCast<MSInt16>::Cast(ParallelMath::RoundAndConvertToS16(ParallelMath::Clamp(f, -31743.0f, 31743.0f), roundingMode)); + else + endPoint[epi][ch] = ParallelMath::LosslessCast<MSInt16>::Cast(ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(f, 0.0f, 31743.0f), roundingMode)); + } + } + } + }; + + template<int TVectorSize> + class AggregatedError + { + public: + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt31 MUInt31; + typedef ParallelMath::Float MFloat; + + AggregatedError() + { + for (int ch = 0; ch < TVectorSize; ch++) + m_errorUnweighted[ch] = ParallelMath::MakeUInt31(0); + } + + void Add(const MUInt16 &channelErrorUnweighted, int ch) + { + m_errorUnweighted[ch] = m_errorUnweighted[ch] + ParallelMath::ToUInt31(channelErrorUnweighted); + } + + MFloat Finalize(uint32_t flags, const float channelWeightsSq[TVectorSize]) const + { + if (flags & cvtt::Flags::Uniform) + { + MUInt31 total = m_errorUnweighted[0]; + for (int ch = 1; ch < TVectorSize; ch++) + total = total + m_errorUnweighted[ch]; + return ParallelMath::ToFloat(total); + } + else + { + MFloat total = ParallelMath::ToFloat(m_errorUnweighted[0]) * channelWeightsSq[0]; + for (int ch = 1; ch < TVectorSize; ch++) + total = total + ParallelMath::ToFloat(m_errorUnweighted[ch]) * channelWeightsSq[ch]; + return total; + } + } + + private: + MUInt31 m_errorUnweighted[TVectorSize]; + }; + + class BCCommon + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::AInt16 MAInt16; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::SInt32 MSInt32; + + static int TweakRoundsForRange(int range) + { + if (range == 3) + return 3; + return 4; + } + + template<int TVectorSize> + static void ComputeErrorLDR(uint32_t flags, const MUInt15 reconstructed[TVectorSize], const MUInt15 original[TVectorSize], int numRealChannels, AggregatedError<TVectorSize> &aggError) + { + for (int ch = 0; ch < numRealChannels; ch++) + aggError.Add(ParallelMath::SqDiffUInt8(reconstructed[ch], original[ch]), ch); + } + + template<int TVectorSize> + static void ComputeErrorLDR(uint32_t flags, const MUInt15 reconstructed[TVectorSize], const MUInt15 original[TVectorSize], AggregatedError<TVectorSize> &aggError) + { + ComputeErrorLDR<TVectorSize>(flags, reconstructed, original, TVectorSize, aggError); + } + + template<int TVectorSize> + static MFloat ComputeErrorLDRSimple(uint32_t flags, const MUInt15 reconstructed[TVectorSize], const MUInt15 original[TVectorSize], int numRealChannels, const float *channelWeightsSq) + { + AggregatedError<TVectorSize> aggError; + ComputeErrorLDR<TVectorSize>(flags, reconstructed, original, numRealChannels, aggError); + return aggError.Finalize(flags, channelWeightsSq); + } + + template<int TVectorSize> + static MFloat ComputeErrorHDRFast(uint32_t flags, const MSInt16 reconstructed[TVectorSize], const MSInt16 original[TVectorSize], const float channelWeightsSq[TVectorSize]) + { + MFloat error = ParallelMath::MakeFloatZero(); + if (flags & Flags::Uniform) + { + for (int ch = 0; ch < TVectorSize; ch++) + error = error + ParallelMath::SqDiffSInt16(reconstructed[ch], original[ch]); + } + else + { + for (int ch = 0; ch < TVectorSize; ch++) + error = error + ParallelMath::SqDiffSInt16(reconstructed[ch], original[ch]) * ParallelMath::MakeFloat(channelWeightsSq[ch]); + } + + return error; + } + + template<int TVectorSize> + static MFloat ComputeErrorHDRSlow(uint32_t flags, const MSInt16 reconstructed[TVectorSize], const MSInt16 original[TVectorSize], const float channelWeightsSq[TVectorSize]) + { + MFloat error = ParallelMath::MakeFloatZero(); + if (flags & Flags::Uniform) + { + for (int ch = 0; ch < TVectorSize; ch++) + error = error + ParallelMath::SqDiff2CL(reconstructed[ch], original[ch]); + } + else + { + for (int ch = 0; ch < TVectorSize; ch++) + error = error + ParallelMath::SqDiff2CL(reconstructed[ch], original[ch]) * ParallelMath::MakeFloat(channelWeightsSq[ch]); + } + + return error; + } + + template<int TChannelCount> + static void PreWeightPixelsLDR(MFloat preWeightedPixels[16][TChannelCount], const MUInt15 pixels[16][TChannelCount], const float channelWeights[TChannelCount]) + { + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < TChannelCount; ch++) + preWeightedPixels[px][ch] = ParallelMath::ToFloat(pixels[px][ch]) * channelWeights[ch]; + } + } + + template<int TChannelCount> + static void PreWeightPixelsHDR(MFloat preWeightedPixels[16][TChannelCount], const MSInt16 pixels[16][TChannelCount], const float channelWeights[TChannelCount]) + { + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < TChannelCount; ch++) + preWeightedPixels[px][ch] = ParallelMath::ToFloat(pixels[px][ch]) * channelWeights[ch]; + } + } + }; + + class BC7Computer + { + public: + static const int MaxTweakRounds = 4; + + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::SInt32 MSInt32; + typedef ParallelMath::Float MFloat; + + struct WorkInfo + { + MUInt15 m_mode; + MFloat m_error; + MUInt15 m_ep[3][2][4]; + MUInt15 m_indexes[16]; + MUInt15 m_indexes2[16]; + + union + { + MUInt15 m_partition; + struct IndexSelectorAndRotation + { + MUInt15 m_indexSelector; + MUInt15 m_rotation; + } m_isr; + } m_u; + }; + + static void TweakAlpha(const MUInt15 original[2], int tweak, int range, MUInt15 result[2]) + { + ParallelMath::RoundTowardNearestForScope roundingMode; + + float tf[2]; + ComputeTweakFactors(tweak, range, tf); + + MFloat base = ParallelMath::ToFloat(original[0]); + MFloat offs = ParallelMath::ToFloat(original[1]) - base; + + result[0] = ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(base + offs * tf[0], 0.0f, 255.0f), &roundingMode); + result[1] = ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(base + offs * tf[1], 0.0f, 255.0f), &roundingMode); + } + + static void Quantize(MUInt15* color, int bits, int channels, const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + float maxColor = static_cast<float>((1 << bits) - 1); + + for (int i = 0; i < channels; i++) + color[i] = ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(ParallelMath::ToFloat(color[i]) * ParallelMath::MakeFloat(1.0f / 255.0f) * maxColor, 0.f, 255.f), roundingMode); + } + + static void QuantizeP(MUInt15* color, int bits, uint16_t p, int channels, const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + uint16_t pShift = static_cast<uint16_t>(1 << (7 - bits)); + MUInt15 pShiftV = ParallelMath::MakeUInt15(pShift); + + float maxColorF = static_cast<float>(255 - (1 << (7 - bits))); + + float maxQuantized = static_cast<float>((1 << bits) - 1); + + for (int ch = 0; ch < channels; ch++) + { + MUInt15 clr = color[ch]; + if (p) + clr = ParallelMath::Max(clr, pShiftV) - pShiftV; + + MFloat rerangedColor = ParallelMath::ToFloat(clr) * maxQuantized / maxColorF; + + clr = ParallelMath::RoundAndConvertToU15(ParallelMath::Clamp(rerangedColor, 0.0f, maxQuantized), roundingMode) << 1; + if (p) + clr = clr | ParallelMath::MakeUInt15(1); + + color[ch] = clr; + } + } + + static void Unquantize(MUInt15* color, int bits, int channels) + { + for (int ch = 0; ch < channels; ch++) + { + MUInt15 clr = color[ch]; + clr = clr << (8 - bits); + color[ch] = clr | ParallelMath::RightShift(clr, bits); + } + } + + static void CompressEndpoints0(MUInt15 ep[2][4], uint16_t p[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + QuantizeP(ep[j], 4, p[j], 3, roundingMode); + Unquantize(ep[j], 5, 3); + ep[j][3] = ParallelMath::MakeUInt15(255); + } + } + + static void CompressEndpoints1(MUInt15 ep[2][4], uint16_t p, const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + QuantizeP(ep[j], 6, p, 3, roundingMode); + Unquantize(ep[j], 7, 3); + ep[j][3] = ParallelMath::MakeUInt15(255); + } + } + + static void CompressEndpoints2(MUInt15 ep[2][4], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + Quantize(ep[j], 5, 3, roundingMode); + Unquantize(ep[j], 5, 3); + ep[j][3] = ParallelMath::MakeUInt15(255); + } + } + + static void CompressEndpoints3(MUInt15 ep[2][4], uint16_t p[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + QuantizeP(ep[j], 7, p[j], 3, roundingMode); + ep[j][3] = ParallelMath::MakeUInt15(255); + } + } + + static void CompressEndpoints4(MUInt15 epRGB[2][3], MUInt15 epA[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + Quantize(epRGB[j], 5, 3, roundingMode); + Unquantize(epRGB[j], 5, 3); + + Quantize(epA + j, 6, 1, roundingMode); + Unquantize(epA + j, 6, 1); + } + } + + static void CompressEndpoints5(MUInt15 epRGB[2][3], MUInt15 epA[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + Quantize(epRGB[j], 7, 3, roundingMode); + Unquantize(epRGB[j], 7, 3); + } + + // Alpha is full precision + (void)epA; + } + + static void CompressEndpoints6(MUInt15 ep[2][4], uint16_t p[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + QuantizeP(ep[j], 7, p[j], 4, roundingMode); + } + + static void CompressEndpoints7(MUInt15 ep[2][4], uint16_t p[2], const ParallelMath::RoundTowardNearestForScope *roundingMode) + { + for (int j = 0; j < 2; j++) + { + QuantizeP(ep[j], 5, p[j], 4, roundingMode); + Unquantize(ep[j], 6, 4); + } + } + + struct SinglePlaneTemporaries + { + UnfinishedEndpoints<3> unfinishedRGB[BC7Data::g_numShapesAll]; + UnfinishedEndpoints<4> unfinishedRGBA[BC7Data::g_numShapes12]; + + MUInt15 fragmentBestIndexes[BC7Data::g_numFragments]; + MUInt15 shapeBestEP[BC7Data::g_maxFragmentsPerMode][2][4]; + MFloat shapeBestError[BC7Data::g_maxFragmentsPerMode]; + }; + + static void TrySingleColorRGBAMultiTable(uint32_t flags, const MUInt15 pixels[16][4], const MFloat average[4], int numRealChannels, const uint8_t *fragmentStart, int shapeLength, const MFloat &staticAlphaError, const ParallelMath::Int16CompFlag punchThroughInvalid[4], MFloat& shapeBestError, MUInt15 shapeBestEP[2][4], MUInt15 *fragmentBestIndexes, const float *channelWeightsSq, const cvtt::Tables::BC7SC::Table*const* tables, int numTables, const ParallelMath::RoundTowardNearestForScope *rtn) + { + MFloat bestAverageError = ParallelMath::MakeFloat(FLT_MAX); + + MUInt15 intAverage[4]; + for (int ch = 0; ch < 4; ch++) + intAverage[ch] = ParallelMath::RoundAndConvertToU15(average[ch], rtn); + + MUInt15 eps[2][4]; + MUInt15 reconstructed[4]; + MUInt15 index = ParallelMath::MakeUInt15(0); + + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + eps[epi][ch] = ParallelMath::MakeUInt15(0); + eps[epi][3] = ParallelMath::MakeUInt15(255); + } + + for (int ch = 0; ch < 3; ch++) + reconstructed[ch] = ParallelMath::MakeUInt15(0); + reconstructed[3] = ParallelMath::MakeUInt15(255); + + // Depending on the target index and parity bits, there are multiple valid solid colors. + // We want to find the one closest to the actual average. + MFloat epsAverageDiff = ParallelMath::MakeFloat(FLT_MAX); + for (int t = 0; t < numTables; t++) + { + const cvtt::Tables::BC7SC::Table& table = *(tables[t]); + + ParallelMath::Int16CompFlag pti = punchThroughInvalid[table.m_pBits]; + + MUInt15 candidateReconstructed[4]; + MUInt15 candidateEPs[2][4]; + + for (int i = 0; i < ParallelMath::ParallelSize; i++) + { + for (int ch = 0; ch < numRealChannels; ch++) + { + ParallelMath::ScalarUInt16 avgValue = ParallelMath::Extract(intAverage[ch], i); + assert(avgValue >= 0 && avgValue <= 255); + + const cvtt::Tables::BC7SC::TableEntry &entry = table.m_entries[avgValue]; + + ParallelMath::PutUInt15(candidateEPs[0][ch], i, entry.m_min); + ParallelMath::PutUInt15(candidateEPs[1][ch], i, entry.m_max); + ParallelMath::PutUInt15(candidateReconstructed[ch], i, entry.m_actualColor); + } + } + + MFloat avgError = ParallelMath::MakeFloatZero(); + for (int ch = 0; ch < numRealChannels; ch++) + { + MFloat delta = ParallelMath::ToFloat(candidateReconstructed[ch]) - average[ch]; + avgError = avgError + delta * delta * channelWeightsSq[ch]; + } + + ParallelMath::Int16CompFlag better = ParallelMath::FloatFlagToInt16(ParallelMath::Less(avgError, bestAverageError)); + better = ParallelMath::AndNot(pti, better); // Mask out punch-through invalidations + + if (ParallelMath::AnySet(better)) + { + ParallelMath::ConditionalSet(bestAverageError, ParallelMath::Int16FlagToFloat(better), avgError); + + MUInt15 candidateIndex = ParallelMath::MakeUInt15(table.m_index); + + ParallelMath::ConditionalSet(index, better, candidateIndex); + + for (int ch = 0; ch < numRealChannels; ch++) + ParallelMath::ConditionalSet(reconstructed[ch], better, candidateReconstructed[ch]); + + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < numRealChannels; ch++) + ParallelMath::ConditionalSet(eps[epi][ch], better, candidateEPs[epi][ch]); + } + } + + AggregatedError<4> aggError; + for (int pxi = 0; pxi < shapeLength; pxi++) + { + int px = fragmentStart[pxi]; + + BCCommon::ComputeErrorLDR<4>(flags, reconstructed, pixels[px], numRealChannels, aggError); + } + + MFloat error = aggError.Finalize(flags, channelWeightsSq) + staticAlphaError; + + ParallelMath::Int16CompFlag better = ParallelMath::FloatFlagToInt16(ParallelMath::Less(error, shapeBestError)); + if (ParallelMath::AnySet(better)) + { + shapeBestError = ParallelMath::Min(shapeBestError, error); + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < numRealChannels; ch++) + ParallelMath::ConditionalSet(shapeBestEP[epi][ch], better, eps[epi][ch]); + } + + for (int pxi = 0; pxi < shapeLength; pxi++) + ParallelMath::ConditionalSet(fragmentBestIndexes[pxi], better, index); + } + } + + + static void TrySinglePlane(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const float channelWeights[4], int numTweakRounds, int numRefineRounds, WorkInfo& work, const ParallelMath::RoundTowardNearestForScope *rtn) + { + if (numRefineRounds < 1) + numRefineRounds = 1; + + if (numTweakRounds < 1) + numTweakRounds = 1; + else if (numTweakRounds > MaxTweakRounds) + numTweakRounds = MaxTweakRounds; + + float channelWeightsSq[4]; + + for (int ch = 0; ch < 4; ch++) + channelWeightsSq[ch] = channelWeights[ch] * channelWeights[ch]; + + SinglePlaneTemporaries temps; + + MUInt15 maxAlpha = ParallelMath::MakeUInt15(0); + MUInt15 minAlpha = ParallelMath::MakeUInt15(255); + ParallelMath::Int16CompFlag isPunchThrough = ParallelMath::MakeBoolInt16(true); + for (int px = 0; px < 16; px++) + { + MUInt15 a = pixels[px][3]; + maxAlpha = ParallelMath::Max(maxAlpha, a); + minAlpha = ParallelMath::Min(minAlpha, a); + + isPunchThrough = (isPunchThrough & (ParallelMath::Equal(a, ParallelMath::MakeUInt15(0)) | ParallelMath::Equal(a, ParallelMath::MakeUInt15(255)))); + } + + ParallelMath::Int16CompFlag blockHasNonMaxAlpha = ParallelMath::Less(minAlpha, ParallelMath::MakeUInt15(255)); + ParallelMath::Int16CompFlag blockHasNonZeroAlpha = ParallelMath::Less(ParallelMath::MakeUInt15(0), maxAlpha); + + bool anyBlockHasAlpha = ParallelMath::AnySet(blockHasNonMaxAlpha); + + // Try RGB modes if any block has a min alpha 251 or higher + bool allowRGBModes = ParallelMath::AnySet(ParallelMath::Less(ParallelMath::MakeUInt15(250), minAlpha)); + + // Try mode 7 if any block has alpha. + // Mode 7 is almost never selected for RGB blocks because mode 4 has very accurate 7.7.7.1 endpoints + // and its parity bit doesn't affect alpha, meaning mode 7 can only be better in extremely specific + // situations, and only by at most 1 unit of error per pixel. + bool allowMode7 = anyBlockHasAlpha; + + MFloat preWeightedPixels[16][4]; + + BCCommon::PreWeightPixelsLDR<4>(preWeightedPixels, pixels, channelWeights); + + const int *rgbInitialEPCollapseList = NULL; + + // Get initial RGB endpoints + if (allowRGBModes) + { + const int *shapeList; + int numShapesToEvaluate; + + if (flags & Flags::BC7_EnablePartitioning) + { + if (flags & Flags::BC7_Enable3Subsets) + { + shapeList = BC7Data::g_shapeListAll; + rgbInitialEPCollapseList = BC7Data::g_shapeListAll; + numShapesToEvaluate = BC7Data::g_numShapesAll; + } + else + { + shapeList = BC7Data::g_shapeList12; + rgbInitialEPCollapseList = BC7Data::g_shapeList12Collapse; + numShapesToEvaluate = BC7Data::g_numShapes12; + } + } + else + { + shapeList = BC7Data::g_shapeList1; + rgbInitialEPCollapseList = BC7Data::g_shapeList1Collapse; + numShapesToEvaluate = BC7Data::g_numShapes1; + } + + for (int shapeIter = 0; shapeIter < numShapesToEvaluate; shapeIter++) + { + int shape = shapeList[shapeIter]; + + int shapeStart = BC7Data::g_shapeRanges[shape][0]; + int shapeSize = BC7Data::g_shapeRanges[shape][1]; + + EndpointSelector<3, 8> epSelector; + + for (int epPass = 0; epPass < NumEndpointSelectorPasses; epPass++) + { + for (int spx = 0; spx < shapeSize; spx++) + { + int px = BC7Data::g_fragments[shapeStart + spx]; + epSelector.ContributePass(preWeightedPixels[px], epPass, ParallelMath::MakeFloat(1.0f)); + } + epSelector.FinishPass(epPass); + } + temps.unfinishedRGB[shapeIter] = epSelector.GetEndpoints(channelWeights); + } + } + + const int *rgbaInitialEPCollapseList = BC7Data::g_shapeList12Collapse; + + // Get initial RGBA endpoints + { + const int *shapeList = BC7Data::g_shapeList12; + int numShapesToEvaluate = BC7Data::g_numShapes12; + + for (int shapeIter = 0; shapeIter < numShapesToEvaluate; shapeIter++) + { + int shape = shapeList[shapeIter]; + + if (anyBlockHasAlpha || !allowRGBModes) + { + int shapeStart = BC7Data::g_shapeRanges[shape][0]; + int shapeSize = BC7Data::g_shapeRanges[shape][1]; + + EndpointSelector<4, 8> epSelector; + + for (int epPass = 0; epPass < NumEndpointSelectorPasses; epPass++) + { + for (int spx = 0; spx < shapeSize; spx++) + { + int px = BC7Data::g_fragments[shapeStart + spx]; + epSelector.ContributePass(preWeightedPixels[px], epPass, ParallelMath::MakeFloat(1.0f)); + } + epSelector.FinishPass(epPass); + } + temps.unfinishedRGBA[shapeIter] = epSelector.GetEndpoints(channelWeights); + } + else + { + temps.unfinishedRGBA[shapeIter] = temps.unfinishedRGB[rgbInitialEPCollapseList[shape]].ExpandTo<4>(255); + } + } + } + + for (uint16_t mode = 0; mode <= 7; mode++) + { + if (!(flags & Flags::BC7_EnablePartitioning) && BC7Data::g_modes[mode].m_numSubsets != 1) + continue; + + if (!(flags & Flags::BC7_Enable3Subsets) && BC7Data::g_modes[mode].m_numSubsets == 3) + continue; + + if (mode == 4 || mode == 5) + continue; + + if (mode < 4 && !allowRGBModes) + continue; + + if (mode == 7 && !allowMode7) + continue; + + bool isRGB = (mode < 4); + + unsigned int numPartitions = 1 << BC7Data::g_modes[mode].m_partitionBits; + int numSubsets = BC7Data::g_modes[mode].m_numSubsets; + int indexPrec = BC7Data::g_modes[mode].m_indexBits; + + int parityBitMax = 1; + if (BC7Data::g_modes[mode].m_pBitMode == BC7Data::PBitMode_PerEndpoint) + parityBitMax = 4; + else if (BC7Data::g_modes[mode].m_pBitMode == BC7Data::PBitMode_PerSubset) + parityBitMax = 2; + + int numRealChannels = isRGB ? 3 : 4; + + int numShapes; + const int *shapeList; + const int *shapeCollapseList; + + if (numSubsets == 1) + { + numShapes = BC7Data::g_numShapes1; + shapeList = BC7Data::g_shapeList1; + shapeCollapseList = BC7Data::g_shapeList1Collapse; + } + else if (numSubsets == 2) + { + numShapes = BC7Data::g_numShapes2; + shapeList = BC7Data::g_shapeList2; + shapeCollapseList = BC7Data::g_shapeList2Collapse; + } + else + { + assert(numSubsets == 3); + if (numPartitions == 16) + { + numShapes = BC7Data::g_numShapes3Short; + shapeList = BC7Data::g_shapeList3Short; + shapeCollapseList = BC7Data::g_shapeList3ShortCollapse; + } + else + { + assert(numPartitions == 64); + numShapes = BC7Data::g_numShapes3; + shapeList = BC7Data::g_shapeList3; + shapeCollapseList = BC7Data::g_shapeList3Collapse; + } + } + + for (int slot = 0; slot < BC7Data::g_maxFragmentsPerMode; slot++) + temps.shapeBestError[slot] = ParallelMath::MakeFloat(FLT_MAX); + + for (int shapeIter = 0; shapeIter < numShapes; shapeIter++) + { + int shape = shapeList[shapeIter]; + int shapeStart = BC7Data::g_shapeRanges[shape][0]; + int shapeLength = BC7Data::g_shapeRanges[shape][1]; + int shapeCollapsedEvalIndex = shapeCollapseList[shape]; + + AggregatedError<1> alphaAggError; + if (isRGB && anyBlockHasAlpha) + { + MUInt15 filledAlpha[1] = { ParallelMath::MakeUInt15(255) }; + + for (int pxi = 0; pxi < shapeLength; pxi++) + { + int px = BC7Data::g_fragments[shapeStart + pxi]; + MUInt15 original[1] = { pixels[px][3] }; + BCCommon::ComputeErrorLDR<1>(flags, filledAlpha, original, alphaAggError); + } + } + + float alphaWeightsSq[1] = { channelWeightsSq[3] }; + MFloat staticAlphaError = alphaAggError.Finalize(flags, alphaWeightsSq); + + assert(shapeCollapsedEvalIndex >= 0); + + MUInt15 tweakBaseEP[MaxTweakRounds][2][4]; + + for (int tweak = 0; tweak < numTweakRounds; tweak++) + { + if (isRGB) + { + temps.unfinishedRGB[rgbInitialEPCollapseList[shape]].FinishLDR(tweak, 1 << indexPrec, tweakBaseEP[tweak][0], tweakBaseEP[tweak][1]); + tweakBaseEP[tweak][0][3] = tweakBaseEP[tweak][1][3] = ParallelMath::MakeUInt15(255); + } + else + { + temps.unfinishedRGBA[rgbaInitialEPCollapseList[shape]].FinishLDR(tweak, 1 << indexPrec, tweakBaseEP[tweak][0], tweakBaseEP[tweak][1]); + } + } + + ParallelMath::Int16CompFlag punchThroughInvalid[4]; + for (int pIter = 0; pIter < parityBitMax; pIter++) + { + punchThroughInvalid[pIter] = ParallelMath::MakeBoolInt16(false); + + if ((flags & Flags::BC7_RespectPunchThrough) && (mode == 6 || mode == 7)) + { + // Modes 6 and 7 have parity bits that affect alpha + if (pIter == 0) + punchThroughInvalid[pIter] = (isPunchThrough & blockHasNonZeroAlpha); + else if (pIter == parityBitMax - 1) + punchThroughInvalid[pIter] = (isPunchThrough & blockHasNonMaxAlpha); + else + punchThroughInvalid[pIter] = isPunchThrough; + } + } + + for (int pIter = 0; pIter < parityBitMax; pIter++) + { + if (ParallelMath::AllSet(punchThroughInvalid[pIter])) + continue; + + bool needPunchThroughCheck = ParallelMath::AnySet(punchThroughInvalid[pIter]); + + for (int tweak = 0; tweak < numTweakRounds; tweak++) + { + uint16_t p[2]; + p[0] = (pIter & 1); + p[1] = ((pIter >> 1) & 1); + + MUInt15 ep[2][4]; + + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 4; ch++) + ep[epi][ch] = tweakBaseEP[tweak][epi][ch]; + + for (int refine = 0; refine < numRefineRounds; refine++) + { + switch (mode) + { + case 0: + CompressEndpoints0(ep, p, rtn); + break; + case 1: + CompressEndpoints1(ep, p[0], rtn); + break; + case 2: + CompressEndpoints2(ep, rtn); + break; + case 3: + CompressEndpoints3(ep, p, rtn); + break; + case 6: + CompressEndpoints6(ep, p, rtn); + break; + case 7: + CompressEndpoints7(ep, p, rtn); + break; + default: + assert(false); + break; + }; + + MFloat shapeError = ParallelMath::MakeFloatZero(); + + IndexSelector<4> indexSelector; + indexSelector.Init<false>(channelWeights, ep, 1 << indexPrec); + + EndpointRefiner<4> epRefiner; + epRefiner.Init(1 << indexPrec, channelWeights); + + MUInt15 indexes[16]; + + AggregatedError<4> aggError; + for (int pxi = 0; pxi < shapeLength; pxi++) + { + int px = BC7Data::g_fragments[shapeStart + pxi]; + + MUInt15 index; + MUInt15 reconstructed[4]; + + index = indexSelector.SelectIndexLDR(floatPixels[px], rtn); + indexSelector.ReconstructLDR_BC7(index, reconstructed, numRealChannels); + + if (flags & cvtt::Flags::BC7_FastIndexing) + BCCommon::ComputeErrorLDR<4>(flags, reconstructed, pixels[px], numRealChannels, aggError); + else + { + MFloat error = BCCommon::ComputeErrorLDRSimple<4>(flags, reconstructed, pixels[px], numRealChannels, channelWeightsSq); + + MUInt15 altIndexes[2]; + altIndexes[0] = ParallelMath::Max(index, ParallelMath::MakeUInt15(1)) - ParallelMath::MakeUInt15(1); + altIndexes[1] = ParallelMath::Min(index + ParallelMath::MakeUInt15(1), ParallelMath::MakeUInt15(static_cast<uint16_t>((1 << indexPrec) - 1))); + + for (int ii = 0; ii < 2; ii++) + { + indexSelector.ReconstructLDR_BC7(altIndexes[ii], reconstructed, numRealChannels); + + MFloat altError = BCCommon::ComputeErrorLDRSimple<4>(flags, reconstructed, pixels[px], numRealChannels, channelWeightsSq); + ParallelMath::Int16CompFlag better = ParallelMath::FloatFlagToInt16(ParallelMath::Less(altError, error)); + error = ParallelMath::Min(error, altError); + ParallelMath::ConditionalSet(index, better, altIndexes[ii]); + } + + shapeError = shapeError + error; + } + + if (refine != numRefineRounds - 1) + epRefiner.ContributeUnweightedPW(preWeightedPixels[px], index, numRealChannels); + + indexes[pxi] = index; + } + + if (flags & cvtt::Flags::BC7_FastIndexing) + shapeError = aggError.Finalize(flags, channelWeightsSq); + + if (isRGB) + shapeError = shapeError + staticAlphaError; + + ParallelMath::FloatCompFlag shapeErrorBetter; + ParallelMath::Int16CompFlag shapeErrorBetter16; + + shapeErrorBetter = ParallelMath::Less(shapeError, temps.shapeBestError[shapeCollapsedEvalIndex]); + shapeErrorBetter16 = ParallelMath::FloatFlagToInt16(shapeErrorBetter); + + if (ParallelMath::AnySet(shapeErrorBetter16)) + { + bool punchThroughOK = true; + if (needPunchThroughCheck) + { + shapeErrorBetter16 = ParallelMath::AndNot(punchThroughInvalid[pIter], shapeErrorBetter16); + shapeErrorBetter = ParallelMath::Int16FlagToFloat(shapeErrorBetter16); + + if (!ParallelMath::AnySet(shapeErrorBetter16)) + punchThroughOK = false; + } + + if (punchThroughOK) + { + ParallelMath::ConditionalSet(temps.shapeBestError[shapeCollapsedEvalIndex], shapeErrorBetter, shapeError); + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < numRealChannels; ch++) + ParallelMath::ConditionalSet(temps.shapeBestEP[shapeCollapsedEvalIndex][epi][ch], shapeErrorBetter16, ep[epi][ch]); + + for (int pxi = 0; pxi < shapeLength; pxi++) + ParallelMath::ConditionalSet(temps.fragmentBestIndexes[shapeStart + pxi], shapeErrorBetter16, indexes[pxi]); + } + } + + if (refine != numRefineRounds - 1) + epRefiner.GetRefinedEndpointsLDR(ep, numRealChannels, rtn); + } // refine + } // tweak + } // p + + if (flags & cvtt::Flags::BC7_TrySingleColor) + { + MUInt15 total[4]; + for (int ch = 0; ch < 4; ch++) + total[ch] = ParallelMath::MakeUInt15(0); + + for (int pxi = 0; pxi < shapeLength; pxi++) + { + int px = BC7Data::g_fragments[shapeStart + pxi]; + for (int ch = 0; ch < 4; ch++) + total[ch] = total[ch] + pixels[pxi][ch]; + } + + MFloat rcpShapeLength = ParallelMath::MakeFloat(1.0f / static_cast<float>(shapeLength)); + MFloat average[4]; + for (int ch = 0; ch < 4; ch++) + average[ch] = ParallelMath::ToFloat(total[ch]) * rcpShapeLength; + + const uint8_t *fragment = BC7Data::g_fragments + shapeStart; + MFloat &shapeBestError = temps.shapeBestError[shapeCollapsedEvalIndex]; + MUInt15(&shapeBestEP)[2][4] = temps.shapeBestEP[shapeCollapsedEvalIndex]; + MUInt15 *fragmentBestIndexes = temps.fragmentBestIndexes + shapeStart; + + const cvtt::Tables::BC7SC::Table **scTables = NULL; + int numSCTables = 0; + + switch (mode) + { + case 0: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode0_p00_i1, + &cvtt::Tables::BC7SC::g_mode0_p00_i2, + &cvtt::Tables::BC7SC::g_mode0_p00_i3, + &cvtt::Tables::BC7SC::g_mode0_p01_i1, + &cvtt::Tables::BC7SC::g_mode0_p01_i2, + &cvtt::Tables::BC7SC::g_mode0_p01_i3, + &cvtt::Tables::BC7SC::g_mode0_p10_i1, + &cvtt::Tables::BC7SC::g_mode0_p10_i2, + &cvtt::Tables::BC7SC::g_mode0_p10_i3, + &cvtt::Tables::BC7SC::g_mode0_p11_i1, + &cvtt::Tables::BC7SC::g_mode0_p11_i2, + &cvtt::Tables::BC7SC::g_mode0_p11_i3, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + case 1: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode1_p0_i1, + &cvtt::Tables::BC7SC::g_mode1_p0_i2, + &cvtt::Tables::BC7SC::g_mode1_p0_i3, + &cvtt::Tables::BC7SC::g_mode1_p1_i1, + &cvtt::Tables::BC7SC::g_mode1_p1_i2, + &cvtt::Tables::BC7SC::g_mode1_p1_i3, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + case 2: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode2, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + case 3: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode3_p0, + &cvtt::Tables::BC7SC::g_mode3_p1, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + case 6: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode6_p0_i1, + &cvtt::Tables::BC7SC::g_mode6_p0_i2, + &cvtt::Tables::BC7SC::g_mode6_p0_i3, + &cvtt::Tables::BC7SC::g_mode6_p0_i4, + &cvtt::Tables::BC7SC::g_mode6_p0_i5, + &cvtt::Tables::BC7SC::g_mode6_p0_i6, + &cvtt::Tables::BC7SC::g_mode6_p0_i7, + &cvtt::Tables::BC7SC::g_mode6_p1_i1, + &cvtt::Tables::BC7SC::g_mode6_p1_i2, + &cvtt::Tables::BC7SC::g_mode6_p1_i3, + &cvtt::Tables::BC7SC::g_mode6_p1_i4, + &cvtt::Tables::BC7SC::g_mode6_p1_i5, + &cvtt::Tables::BC7SC::g_mode6_p1_i6, + &cvtt::Tables::BC7SC::g_mode6_p1_i7, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + case 7: + { + const cvtt::Tables::BC7SC::Table *tables[] = + { + &cvtt::Tables::BC7SC::g_mode7_p00, + &cvtt::Tables::BC7SC::g_mode7_p01, + &cvtt::Tables::BC7SC::g_mode7_p10, + &cvtt::Tables::BC7SC::g_mode7_p11, + }; + scTables = tables; + numSCTables = sizeof(tables) / sizeof(tables[0]); + } + break; + default: + assert(false); + break; + } + + TrySingleColorRGBAMultiTable(flags, pixels, average, numRealChannels, fragment, shapeLength, staticAlphaError, punchThroughInvalid, shapeBestError, shapeBestEP, fragmentBestIndexes, channelWeightsSq, scTables, numSCTables, rtn); + } + } // shapeIter + + for (uint16_t partition = 0; partition < numPartitions; partition++) + { + const int *partitionShapes; + if (numSubsets == 1) + partitionShapes = BC7Data::g_shapes1[partition]; + else if (numSubsets == 2) + partitionShapes = BC7Data::g_shapes2[partition]; + else + { + assert(numSubsets == 3); + partitionShapes = BC7Data::g_shapes3[partition]; + } + + MFloat totalError = ParallelMath::MakeFloatZero(); + for (int subset = 0; subset < numSubsets; subset++) + totalError = totalError + temps.shapeBestError[shapeCollapseList[partitionShapes[subset]]]; + + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(totalError, work.m_error); + ParallelMath::Int16CompFlag errorBetter16 = ParallelMath::FloatFlagToInt16(errorBetter); + + if (ParallelMath::AnySet(errorBetter16)) + { + for (int subset = 0; subset < numSubsets; subset++) + { + int shape = partitionShapes[subset]; + int shapeStart = BC7Data::g_shapeRanges[shape][0]; + int shapeLength = BC7Data::g_shapeRanges[shape][1]; + int shapeCollapsedEvalIndex = shapeCollapseList[shape]; + + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 4; ch++) + ParallelMath::ConditionalSet(work.m_ep[subset][epi][ch], errorBetter16, temps.shapeBestEP[shapeCollapsedEvalIndex][epi][ch]); + + for (int pxi = 0; pxi < shapeLength; pxi++) + { + int px = BC7Data::g_fragments[shapeStart + pxi]; + ParallelMath::ConditionalSet(work.m_indexes[px], errorBetter16, temps.fragmentBestIndexes[shapeStart + pxi]); + } + } + + work.m_error = ParallelMath::Min(totalError, work.m_error); + ParallelMath::ConditionalSet(work.m_mode, errorBetter16, ParallelMath::MakeUInt15(mode)); + ParallelMath::ConditionalSet(work.m_u.m_partition, errorBetter16, ParallelMath::MakeUInt15(partition)); + } + } + } + } + + static void TryDualPlane(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const float channelWeights[4], int numTweakRounds, int numRefineRounds, WorkInfo& work, const ParallelMath::RoundTowardNearestForScope *rtn) + { + // TODO: These error calculations are not optimal for weight-by-alpha, but this routine needs to be mostly rewritten for that. + // The alpha/color solutions are co-dependent in that case, but a good way to solve it would probably be to + // solve the alpha channel first, then solve the RGB channels, which in turn breaks down into two cases: + // - Separate alpha channel, then weighted RGB + // - Alpha+2 other channels, then the independent channel + + if (!(flags & Flags::BC7_EnableDualPlane)) + return; + + if (numRefineRounds < 1) + numRefineRounds = 1; + + if (numTweakRounds < 1) + numTweakRounds = 1; + else if (numTweakRounds > MaxTweakRounds) + numTweakRounds = MaxTweakRounds; + + float channelWeightsSq[4]; + for (int ch = 0; ch < 4; ch++) + channelWeightsSq[ch] = channelWeights[ch] * channelWeights[ch]; + + for (uint16_t mode = 4; mode <= 5; mode++) + { + for (uint16_t rotation = 0; rotation < 4; rotation++) + { + int alphaChannel = (rotation + 3) & 3; + int redChannel = (rotation == 1) ? 3 : 0; + int greenChannel = (rotation == 2) ? 3 : 1; + int blueChannel = (rotation == 3) ? 3 : 2; + + MUInt15 rotatedRGB[16][3]; + MFloat floatRotatedRGB[16][3]; + + for (int px = 0; px < 16; px++) + { + rotatedRGB[px][0] = pixels[px][redChannel]; + rotatedRGB[px][1] = pixels[px][greenChannel]; + rotatedRGB[px][2] = pixels[px][blueChannel]; + + for (int ch = 0; ch < 3; ch++) + floatRotatedRGB[px][ch] = ParallelMath::ToFloat(rotatedRGB[px][ch]); + } + + uint16_t maxIndexSelector = (mode == 4) ? 2 : 1; + + float rotatedRGBWeights[3] = { channelWeights[redChannel], channelWeights[greenChannel], channelWeights[blueChannel] }; + float rotatedRGBWeightsSq[3] = { channelWeightsSq[redChannel], channelWeightsSq[greenChannel], channelWeightsSq[blueChannel] }; + float rotatedAlphaWeight[1] = { channelWeights[alphaChannel] }; + float rotatedAlphaWeightSq[1] = { channelWeightsSq[alphaChannel] }; + + float uniformWeight[1] = { 1.0f }; // Since the alpha channel is independent, there's no need to bother with weights when doing refinement or selection, only error + + MFloat preWeightedRotatedRGB[16][3]; + BCCommon::PreWeightPixelsLDR<3>(preWeightedRotatedRGB, rotatedRGB, rotatedRGBWeights); + + for (uint16_t indexSelector = 0; indexSelector < maxIndexSelector; indexSelector++) + { + EndpointSelector<3, 8> rgbSelector; + + for (int epPass = 0; epPass < NumEndpointSelectorPasses; epPass++) + { + for (int px = 0; px < 16; px++) + rgbSelector.ContributePass(preWeightedRotatedRGB[px], epPass, ParallelMath::MakeFloat(1.0f)); + + rgbSelector.FinishPass(epPass); + } + + MUInt15 alphaRange[2]; + + alphaRange[0] = alphaRange[1] = pixels[0][alphaChannel]; + for (int px = 1; px < 16; px++) + { + alphaRange[0] = ParallelMath::Min(pixels[px][alphaChannel], alphaRange[0]); + alphaRange[1] = ParallelMath::Max(pixels[px][alphaChannel], alphaRange[1]); + } + + int rgbPrec = 0; + int alphaPrec = 0; + + if (mode == 4) + { + rgbPrec = indexSelector ? 3 : 2; + alphaPrec = indexSelector ? 2 : 3; + } + else + rgbPrec = alphaPrec = 2; + + UnfinishedEndpoints<3> unfinishedRGB = rgbSelector.GetEndpoints(rotatedRGBWeights); + + MFloat bestRGBError = ParallelMath::MakeFloat(FLT_MAX); + MFloat bestAlphaError = ParallelMath::MakeFloat(FLT_MAX); + + MUInt15 bestRGBIndexes[16]; + MUInt15 bestAlphaIndexes[16]; + MUInt15 bestEP[2][4]; + + for (int px = 0; px < 16; px++) + bestRGBIndexes[px] = bestAlphaIndexes[px] = ParallelMath::MakeUInt15(0); + + for (int tweak = 0; tweak < numTweakRounds; tweak++) + { + MUInt15 rgbEP[2][3]; + MUInt15 alphaEP[2]; + + unfinishedRGB.FinishLDR(tweak, 1 << rgbPrec, rgbEP[0], rgbEP[1]); + + TweakAlpha(alphaRange, tweak, 1 << alphaPrec, alphaEP); + + for (int refine = 0; refine < numRefineRounds; refine++) + { + if (mode == 4) + CompressEndpoints4(rgbEP, alphaEP, rtn); + else + CompressEndpoints5(rgbEP, alphaEP, rtn); + + + IndexSelector<1> alphaIndexSelector; + IndexSelector<3> rgbIndexSelector; + + { + MUInt15 alphaEPTemp[2][1] = { { alphaEP[0] },{ alphaEP[1] } }; + alphaIndexSelector.Init<false>(uniformWeight, alphaEPTemp, 1 << alphaPrec); + } + rgbIndexSelector.Init<false>(rotatedRGBWeights, rgbEP, 1 << rgbPrec); + + EndpointRefiner<3> rgbRefiner; + EndpointRefiner<1> alphaRefiner; + + rgbRefiner.Init(1 << rgbPrec, rotatedRGBWeights); + alphaRefiner.Init(1 << alphaPrec, uniformWeight); + + MFloat errorRGB = ParallelMath::MakeFloatZero(); + MFloat errorA = ParallelMath::MakeFloatZero(); + + MUInt15 rgbIndexes[16]; + MUInt15 alphaIndexes[16]; + + AggregatedError<3> rgbAggError; + AggregatedError<1> alphaAggError; + + for (int px = 0; px < 16; px++) + { + MUInt15 rgbIndex = rgbIndexSelector.SelectIndexLDR(floatRotatedRGB[px], rtn); + MUInt15 alphaIndex = alphaIndexSelector.SelectIndexLDR(floatPixels[px] + alphaChannel, rtn); + + MUInt15 reconstructedRGB[3]; + MUInt15 reconstructedAlpha[1]; + + rgbIndexSelector.ReconstructLDR_BC7(rgbIndex, reconstructedRGB); + alphaIndexSelector.ReconstructLDR_BC7(alphaIndex, reconstructedAlpha); + + if (flags & cvtt::Flags::BC7_FastIndexing) + { + BCCommon::ComputeErrorLDR<3>(flags, reconstructedRGB, rotatedRGB[px], rgbAggError); + BCCommon::ComputeErrorLDR<1>(flags, reconstructedAlpha, pixels[px] + alphaChannel, alphaAggError); + } + else + { + AggregatedError<3> baseRGBAggError; + AggregatedError<1> baseAlphaAggError; + + BCCommon::ComputeErrorLDR<3>(flags, reconstructedRGB, rotatedRGB[px], baseRGBAggError); + BCCommon::ComputeErrorLDR<1>(flags, reconstructedAlpha, pixels[px] + alphaChannel, baseAlphaAggError); + + MFloat rgbError = baseRGBAggError.Finalize(flags, rotatedRGBWeightsSq); + MFloat alphaError = baseAlphaAggError.Finalize(flags, rotatedAlphaWeightSq); + + MUInt15 altRGBIndexes[2]; + MUInt15 altAlphaIndexes[2]; + + altRGBIndexes[0] = ParallelMath::Max(rgbIndex, ParallelMath::MakeUInt15(1)) - ParallelMath::MakeUInt15(1); + altRGBIndexes[1] = ParallelMath::Min(rgbIndex + ParallelMath::MakeUInt15(1), ParallelMath::MakeUInt15(static_cast<uint16_t>((1 << rgbPrec) - 1))); + + altAlphaIndexes[0] = ParallelMath::Max(alphaIndex, ParallelMath::MakeUInt15(1)) - ParallelMath::MakeUInt15(1); + altAlphaIndexes[1] = ParallelMath::Min(alphaIndex + ParallelMath::MakeUInt15(1), ParallelMath::MakeUInt15(static_cast<uint16_t>((1 << alphaPrec) - 1))); + + for (int ii = 0; ii < 2; ii++) + { + rgbIndexSelector.ReconstructLDR_BC7(altRGBIndexes[ii], reconstructedRGB); + alphaIndexSelector.ReconstructLDR_BC7(altAlphaIndexes[ii], reconstructedAlpha); + + AggregatedError<3> altRGBAggError; + AggregatedError<1> altAlphaAggError; + + BCCommon::ComputeErrorLDR<3>(flags, reconstructedRGB, rotatedRGB[px], altRGBAggError); + BCCommon::ComputeErrorLDR<1>(flags, reconstructedAlpha, pixels[px] + alphaChannel, altAlphaAggError); + + MFloat altRGBError = altRGBAggError.Finalize(flags, rotatedRGBWeightsSq); + MFloat altAlphaError = altAlphaAggError.Finalize(flags, rotatedAlphaWeightSq); + + ParallelMath::Int16CompFlag rgbBetter = ParallelMath::FloatFlagToInt16(ParallelMath::Less(altRGBError, rgbError)); + ParallelMath::Int16CompFlag alphaBetter = ParallelMath::FloatFlagToInt16(ParallelMath::Less(altAlphaError, alphaError)); + + rgbError = ParallelMath::Min(altRGBError, rgbError); + alphaError = ParallelMath::Min(altAlphaError, alphaError); + + ParallelMath::ConditionalSet(rgbIndex, rgbBetter, altRGBIndexes[ii]); + ParallelMath::ConditionalSet(alphaIndex, alphaBetter, altAlphaIndexes[ii]); + } + + errorRGB = errorRGB + rgbError; + errorA = errorA + alphaError; + } + + if (refine != numRefineRounds - 1) + { + rgbRefiner.ContributeUnweightedPW(preWeightedRotatedRGB[px], rgbIndex); + alphaRefiner.ContributeUnweightedPW(floatPixels[px] + alphaChannel, alphaIndex); + } + + if (flags & Flags::BC7_FastIndexing) + { + errorRGB = rgbAggError.Finalize(flags, rotatedRGBWeightsSq); + errorA = rgbAggError.Finalize(flags, rotatedAlphaWeightSq); + } + + rgbIndexes[px] = rgbIndex; + alphaIndexes[px] = alphaIndex; + } + + ParallelMath::FloatCompFlag rgbBetter = ParallelMath::Less(errorRGB, bestRGBError); + ParallelMath::FloatCompFlag alphaBetter = ParallelMath::Less(errorA, bestAlphaError); + + ParallelMath::Int16CompFlag rgbBetterInt16 = ParallelMath::FloatFlagToInt16(rgbBetter); + ParallelMath::Int16CompFlag alphaBetterInt16 = ParallelMath::FloatFlagToInt16(alphaBetter); + + if (ParallelMath::AnySet(rgbBetterInt16)) + { + bestRGBError = ParallelMath::Min(errorRGB, bestRGBError); + + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestRGBIndexes[px], rgbBetterInt16, rgbIndexes[px]); + + for (int ep = 0; ep < 2; ep++) + { + for (int ch = 0; ch < 3; ch++) + ParallelMath::ConditionalSet(bestEP[ep][ch], rgbBetterInt16, rgbEP[ep][ch]); + } + } + + if (ParallelMath::AnySet(alphaBetterInt16)) + { + bestAlphaError = ParallelMath::Min(errorA, bestAlphaError); + + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestAlphaIndexes[px], alphaBetterInt16, alphaIndexes[px]); + + for (int ep = 0; ep < 2; ep++) + ParallelMath::ConditionalSet(bestEP[ep][3], alphaBetterInt16, alphaEP[ep]); + } + + if (refine != numRefineRounds - 1) + { + rgbRefiner.GetRefinedEndpointsLDR(rgbEP, rtn); + + MUInt15 alphaEPTemp[2][1]; + alphaRefiner.GetRefinedEndpointsLDR(alphaEPTemp, rtn); + + for (int i = 0; i < 2; i++) + alphaEP[i] = alphaEPTemp[i][0]; + } + } // refine + } // tweak + + MFloat combinedError = bestRGBError + bestAlphaError; + + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(combinedError, work.m_error); + ParallelMath::Int16CompFlag errorBetter16 = ParallelMath::FloatFlagToInt16(errorBetter); + + work.m_error = ParallelMath::Min(combinedError, work.m_error); + + ParallelMath::ConditionalSet(work.m_mode, errorBetter16, ParallelMath::MakeUInt15(mode)); + ParallelMath::ConditionalSet(work.m_u.m_isr.m_rotation, errorBetter16, ParallelMath::MakeUInt15(rotation)); + ParallelMath::ConditionalSet(work.m_u.m_isr.m_indexSelector, errorBetter16, ParallelMath::MakeUInt15(indexSelector)); + + for (int px = 0; px < 16; px++) + { + ParallelMath::ConditionalSet(work.m_indexes[px], errorBetter16, indexSelector ? bestAlphaIndexes[px] : bestRGBIndexes[px]); + ParallelMath::ConditionalSet(work.m_indexes2[px], errorBetter16, indexSelector ? bestRGBIndexes[px] : bestAlphaIndexes[px]); + } + + for (int ep = 0; ep < 2; ep++) + for (int ch = 0; ch < 4; ch++) + ParallelMath::ConditionalSet(work.m_ep[0][ep][ch], errorBetter16, bestEP[ep][ch]); + } + } + } + } + + template<class T> + static void Swap(T& a, T& b) + { + T temp = a; + a = b; + b = temp; + } + + static void Pack(uint32_t flags, const PixelBlockU8* inputs, uint8_t* packedBlocks, const float channelWeights[4], int numTweakRounds, int numRefineRounds) + { + MUInt15 pixels[16][4]; + MFloat floatPixels[16][4]; + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 4; ch++) + ParallelMath::ConvertLDRInputs(inputs, px, ch, pixels[px][ch]); + } + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 4; ch++) + floatPixels[px][ch] = ParallelMath::ToFloat(pixels[px][ch]); + } + + WorkInfo work; + memset(&work, 0, sizeof(work)); + + work.m_error = ParallelMath::MakeFloat(FLT_MAX); + + { + ParallelMath::RoundTowardNearestForScope rtn; + TrySinglePlane(flags, pixels, floatPixels, channelWeights, numTweakRounds, numRefineRounds, work, &rtn); + TryDualPlane(flags, pixels, floatPixels, channelWeights, numTweakRounds, numRefineRounds, work, &rtn); + } + + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + PackingVector pv; + pv.Init(); + + ParallelMath::ScalarUInt16 mode = ParallelMath::Extract(work.m_mode, block); + ParallelMath::ScalarUInt16 partition = ParallelMath::Extract(work.m_u.m_partition, block); + ParallelMath::ScalarUInt16 indexSelector = ParallelMath::Extract(work.m_u.m_isr.m_indexSelector, block); + + const BC7Data::BC7ModeInfo& modeInfo = BC7Data::g_modes[mode]; + + ParallelMath::ScalarUInt16 indexes[16]; + ParallelMath::ScalarUInt16 indexes2[16]; + ParallelMath::ScalarUInt16 endPoints[3][2][4]; + + for (int i = 0; i < 16; i++) + { + indexes[i] = ParallelMath::Extract(work.m_indexes[i], block); + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + indexes2[i] = ParallelMath::Extract(work.m_indexes2[i], block); + } + + for (int subset = 0; subset < 3; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + for (int ch = 0; ch < 4; ch++) + endPoints[subset][ep][ch] = ParallelMath::Extract(work.m_ep[subset][ep][ch], block); + } + } + + int fixups[3] = { 0, 0, 0 }; + + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + { + bool flipRGB = ((indexes[0] & (1 << (modeInfo.m_indexBits - 1))) != 0); + bool flipAlpha = ((indexes2[0] & (1 << (modeInfo.m_alphaIndexBits - 1))) != 0); + + if (flipRGB) + { + uint16_t highIndex = (1 << modeInfo.m_indexBits) - 1; + for (int px = 0; px < 16; px++) + indexes[px] = highIndex - indexes[px]; + } + + if (flipAlpha) + { + uint16_t highIndex = (1 << modeInfo.m_alphaIndexBits) - 1; + for (int px = 0; px < 16; px++) + indexes2[px] = highIndex - indexes2[px]; + } + + if (indexSelector) + Swap(flipRGB, flipAlpha); + + if (flipRGB) + { + for (int ch = 0; ch < 3; ch++) + Swap(endPoints[0][0][ch], endPoints[0][1][ch]); + } + if (flipAlpha) + Swap(endPoints[0][0][3], endPoints[0][1][3]); + + } + else + { + if (modeInfo.m_numSubsets == 2) + fixups[1] = BC7Data::g_fixupIndexes2[partition]; + else if (modeInfo.m_numSubsets == 3) + { + fixups[1] = BC7Data::g_fixupIndexes3[partition][0]; + fixups[2] = BC7Data::g_fixupIndexes3[partition][1]; + } + + bool flip[3] = { false, false, false }; + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + flip[subset] = ((indexes[fixups[subset]] & (1 << (modeInfo.m_indexBits - 1))) != 0); + + if (flip[0] || flip[1] || flip[2]) + { + uint16_t highIndex = (1 << modeInfo.m_indexBits) - 1; + for (int px = 0; px < 16; px++) + { + int subset = 0; + if (modeInfo.m_numSubsets == 2) + subset = (BC7Data::g_partitionMap[partition] >> px) & 1; + else if (modeInfo.m_numSubsets == 3) + subset = (BC7Data::g_partitionMap2[partition] >> (px * 2)) & 3; + + if (flip[subset]) + indexes[px] = highIndex - indexes[px]; + } + + int maxCH = (modeInfo.m_alphaMode == BC7Data::AlphaMode_Combined) ? 4 : 3; + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + if (flip[subset]) + for (int ch = 0; ch < maxCH; ch++) + Swap(endPoints[subset][0][ch], endPoints[subset][1][ch]); + } + } + } + + pv.Pack(static_cast<uint8_t>(1 << mode), mode + 1); + + if (modeInfo.m_partitionBits) + pv.Pack(partition, modeInfo.m_partitionBits); + + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + { + ParallelMath::ScalarUInt16 rotation = ParallelMath::Extract(work.m_u.m_isr.m_rotation, block); + pv.Pack(rotation, 2); + } + + if (modeInfo.m_hasIndexSelector) + pv.Pack(indexSelector, 1); + + // Encode RGB + for (int ch = 0; ch < 3; ch++) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + ParallelMath::ScalarUInt16 epPart = endPoints[subset][ep][ch]; + epPart >>= (8 - modeInfo.m_rgbBits); + + pv.Pack(epPart, modeInfo.m_rgbBits); + } + } + } + + // Encode alpha + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + ParallelMath::ScalarUInt16 epPart = endPoints[subset][ep][3]; + epPart >>= (8 - modeInfo.m_alphaBits); + + pv.Pack(epPart, modeInfo.m_alphaBits); + } + } + } + + // Encode parity bits + if (modeInfo.m_pBitMode == BC7Data::PBitMode_PerSubset) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + ParallelMath::ScalarUInt16 epPart = endPoints[subset][0][0]; + epPart >>= (7 - modeInfo.m_rgbBits); + epPart &= 1; + + pv.Pack(epPart, 1); + } + } + else if (modeInfo.m_pBitMode == BC7Data::PBitMode_PerEndpoint) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + ParallelMath::ScalarUInt16 epPart = endPoints[subset][ep][0]; + epPart >>= (7 - modeInfo.m_rgbBits); + epPart &= 1; + + pv.Pack(epPart, 1); + } + } + } + + // Encode indexes + for (int px = 0; px < 16; px++) + { + int bits = modeInfo.m_indexBits; + if ((px == 0) || (px == fixups[1]) || (px == fixups[2])) + bits--; + + pv.Pack(indexes[px], bits); + } + + // Encode secondary indexes + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + { + for (int px = 0; px < 16; px++) + { + int bits = modeInfo.m_alphaIndexBits; + if (px == 0) + bits--; + + pv.Pack(indexes2[px], bits); + } + } + + pv.Flush(packedBlocks); + + packedBlocks += 16; + } + } + + static void UnpackOne(PixelBlockU8 &output, const uint8_t* packedBlock) + { + UnpackingVector pv; + pv.Init(packedBlock); + + int mode = 8; + for (int i = 0; i < 8; i++) + { + if (pv.Unpack(1) == 1) + { + mode = i; + break; + } + } + + if (mode > 7) + { + for (int px = 0; px < 16; px++) + for (int ch = 0; ch < 4; ch++) + output.m_pixels[px][ch] = 0; + + return; + } + + const BC7Data::BC7ModeInfo &modeInfo = BC7Data::g_modes[mode]; + + int partition = 0; + if (modeInfo.m_partitionBits) + partition = pv.Unpack(modeInfo.m_partitionBits); + + int rotation = 0; + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + rotation = pv.Unpack(2); + + int indexSelector = 0; + if (modeInfo.m_hasIndexSelector) + indexSelector = pv.Unpack(1); + + // Resolve fixups + int fixups[3] = { 0, 0, 0 }; + + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_Separate) + { + if (modeInfo.m_numSubsets == 2) + fixups[1] = BC7Data::g_fixupIndexes2[partition]; + else if (modeInfo.m_numSubsets == 3) + { + fixups[1] = BC7Data::g_fixupIndexes3[partition][0]; + fixups[2] = BC7Data::g_fixupIndexes3[partition][1]; + } + } + + int endPoints[3][2][4]; + + // Decode RGB + for (int ch = 0; ch < 3; ch++) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + endPoints[subset][ep][ch] = (pv.Unpack(modeInfo.m_rgbBits) << (8 - modeInfo.m_rgbBits)); + } + } + + // Decode alpha + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + endPoints[subset][ep][3] = (pv.Unpack(modeInfo.m_alphaBits) << (8 - modeInfo.m_alphaBits)); + } + } + else + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + endPoints[subset][ep][3] = 255; + } + } + + int parityBits = 0; + + // Decode parity bits + if (modeInfo.m_pBitMode == BC7Data::PBitMode_PerSubset) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + int p = pv.Unpack(1); + + for (int ep = 0; ep < 2; ep++) + { + for (int ch = 0; ch < 3; ch++) + endPoints[subset][ep][ch] |= p << (7 - modeInfo.m_rgbBits); + + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + endPoints[subset][ep][3] |= p << (7 - modeInfo.m_alphaBits); + } + } + + parityBits = 1; + } + else if (modeInfo.m_pBitMode == BC7Data::PBitMode_PerEndpoint) + { + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + int p = pv.Unpack(1); + + for (int ch = 0; ch < 3; ch++) + endPoints[subset][ep][ch] |= p << (7 - modeInfo.m_rgbBits); + + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + endPoints[subset][ep][3] |= p << (7 - modeInfo.m_alphaBits); + } + } + + parityBits = 1; + } + + // Fill endpoint bits + for (int subset = 0; subset < modeInfo.m_numSubsets; subset++) + { + for (int ep = 0; ep < 2; ep++) + { + for (int ch = 0; ch < 3; ch++) + endPoints[subset][ep][ch] |= (endPoints[subset][ep][ch] >> (modeInfo.m_rgbBits + parityBits)); + + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + endPoints[subset][ep][3] |= (endPoints[subset][ep][3] >> (modeInfo.m_alphaBits + parityBits)); + } + } + + int indexes[16]; + int indexes2[16]; + + // Decode indexes + for (int px = 0; px < 16; px++) + { + int bits = modeInfo.m_indexBits; + if ((px == 0) || (px == fixups[1]) || (px == fixups[2])) + bits--; + + indexes[px] = pv.Unpack(bits); + } + + // Decode secondary indexes + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + { + for (int px = 0; px < 16; px++) + { + int bits = modeInfo.m_alphaIndexBits; + if (px == 0) + bits--; + + indexes2[px] = pv.Unpack(bits); + } + } + else + { + for (int px = 0; px < 16; px++) + indexes2[px] = 0; + } + + const int *alphaWeights = BC7Data::g_weightTables[modeInfo.m_alphaIndexBits]; + const int *rgbWeights = BC7Data::g_weightTables[modeInfo.m_indexBits]; + + // Decode each pixel + for (int px = 0; px < 16; px++) + { + int rgbWeight = 0; + int alphaWeight = 0; + + int rgbIndex = indexes[px]; + + rgbWeight = rgbWeights[indexes[px]]; + + if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Combined) + alphaWeight = rgbWeight; + else if (modeInfo.m_alphaMode == BC7Data::AlphaMode_Separate) + alphaWeight = alphaWeights[indexes2[px]]; + + if (indexSelector == 1) + { + int temp = rgbWeight; + rgbWeight = alphaWeight; + alphaWeight = temp; + } + + int pixel[4] = { 0, 0, 0, 255 }; + + int subset = 0; + + if (modeInfo.m_numSubsets == 2) + subset = (BC7Data::g_partitionMap[partition] >> px) & 1; + else if (modeInfo.m_numSubsets == 3) + subset = (BC7Data::g_partitionMap2[partition] >> (px * 2)) & 3; + + for (int ch = 0; ch < 3; ch++) + pixel[ch] = ((64 - rgbWeight) * endPoints[subset][0][ch] + rgbWeight * endPoints[subset][1][ch] + 32) >> 6; + + if (modeInfo.m_alphaMode != BC7Data::AlphaMode_None) + pixel[3] = ((64 - alphaWeight) * endPoints[subset][0][3] + alphaWeight * endPoints[subset][1][3] + 32) >> 6; + + if (rotation != 0) + { + int ch = rotation - 1; + int temp = pixel[ch]; + pixel[ch] = pixel[3]; + pixel[3] = temp; + } + + for (int ch = 0; ch < 4; ch++) + output.m_pixels[px][ch] = static_cast<uint8_t>(pixel[ch]); + } + } + }; + + class BC6HComputer + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::AInt16 MAInt16; + typedef ParallelMath::SInt32 MSInt32; + typedef ParallelMath::UInt31 MUInt31; + + static const int MaxTweakRounds = 4; + static const int MaxRefineRounds = 3; + + static MSInt16 QuantizeSingleEndpointElementSigned(const MSInt16 &elem2CL, int precision, const ParallelMath::RoundUpForScope* ru) + { + assert(ParallelMath::AllSet(ParallelMath::Less(elem2CL, ParallelMath::MakeSInt16(31744)))); + assert(ParallelMath::AllSet(ParallelMath::Less(ParallelMath::MakeSInt16(-31744), elem2CL))); + + // Expand to full range + ParallelMath::Int16CompFlag isNegative = ParallelMath::Less(elem2CL, ParallelMath::MakeSInt16(0)); + MUInt15 absElem = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::Select(isNegative, ParallelMath::MakeSInt16(0) - elem2CL, elem2CL)); + + absElem = ParallelMath::RightShift(ParallelMath::RoundAndConvertToU15(ParallelMath::ToFloat(absElem) * 32.0f / 31.0f, ru), 16 - precision); + + MSInt16 absElemS16 = ParallelMath::LosslessCast<MSInt16>::Cast(absElem); + + return ParallelMath::Select(isNegative, ParallelMath::MakeSInt16(0) - absElemS16, absElemS16); + } + + static MUInt15 QuantizeSingleEndpointElementUnsigned(const MUInt15 &elem, int precision, const ParallelMath::RoundUpForScope* ru) + { + MUInt16 expandedElem = ParallelMath::RoundAndConvertToU16(ParallelMath::Min(ParallelMath::ToFloat(elem) * 64.0f / 31.0f, ParallelMath::MakeFloat(65535.0f)), ru); + return ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(expandedElem, 16 - precision)); + } + + static void UnquantizeSingleEndpointElementSigned(const MSInt16 &comp, int precision, MSInt16 &outUnquantized, MSInt16 &outUnquantizedFinished2CL) + { + MSInt16 zero = ParallelMath::MakeSInt16(0); + + ParallelMath::Int16CompFlag negative = ParallelMath::Less(comp, zero); + MUInt15 absComp = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::Select(negative, MSInt16(zero - comp), comp)); + + MSInt16 unq; + MUInt15 absUnq; + + if (precision >= 16) + { + unq = comp; + absUnq = absComp; + } + else + { + MSInt16 maxCompMinusOne = ParallelMath::MakeSInt16(static_cast<int16_t>((1 << (precision - 1)) - 2)); + ParallelMath::Int16CompFlag isZero = ParallelMath::Equal(comp, zero); + ParallelMath::Int16CompFlag isMax = ParallelMath::Less(maxCompMinusOne, comp); + + absUnq = (absComp << (16 - precision)) + ParallelMath::MakeUInt15(static_cast<uint16_t>(0x4000 >> (precision - 1))); + ParallelMath::ConditionalSet(absUnq, isZero, ParallelMath::MakeUInt15(0)); + ParallelMath::ConditionalSet(absUnq, isMax, ParallelMath::MakeUInt15(0x7fff)); + + unq = ParallelMath::ConditionalNegate(negative, ParallelMath::LosslessCast<MSInt16>::Cast(absUnq)); + } + + outUnquantized = unq; + + MUInt15 funq = ParallelMath::ToUInt15(ParallelMath::RightShift(ParallelMath::XMultiply(absUnq, ParallelMath::MakeUInt15(31)), 5)); + + outUnquantizedFinished2CL = ParallelMath::ConditionalNegate(negative, ParallelMath::LosslessCast<MSInt16>::Cast(funq)); + } + + static void UnquantizeSingleEndpointElementUnsigned(const MUInt15 &comp, int precision, MUInt16 &outUnquantized, MUInt16 &outUnquantizedFinished) + { + MUInt16 unq = ParallelMath::LosslessCast<MUInt16>::Cast(comp); + if (precision < 15) + { + MUInt15 zero = ParallelMath::MakeUInt15(0); + MUInt15 maxCompMinusOne = ParallelMath::MakeUInt15(static_cast<uint16_t>((1 << precision) - 2)); + + ParallelMath::Int16CompFlag isZero = ParallelMath::Equal(comp, zero); + ParallelMath::Int16CompFlag isMax = ParallelMath::Less(maxCompMinusOne, comp); + + unq = (ParallelMath::LosslessCast<MUInt16>::Cast(comp) << (16 - precision)) + ParallelMath::MakeUInt16(static_cast<uint16_t>(0x8000 >> precision)); + + ParallelMath::ConditionalSet(unq, isZero, ParallelMath::MakeUInt16(0)); + ParallelMath::ConditionalSet(unq, isMax, ParallelMath::MakeUInt16(0xffff)); + } + + outUnquantized = unq; + outUnquantizedFinished = ParallelMath::ToUInt16(ParallelMath::RightShift(ParallelMath::XMultiply(unq, ParallelMath::MakeUInt15(31)), 6)); + } + + static void QuantizeEndpointsSigned(const MSInt16 endPoints[2][3], const MFloat floatPixelsColorSpace[16][3], const MFloat floatPixelsLinearWeighted[16][3], MAInt16 quantizedEndPoints[2][3], MUInt15 indexes[16], IndexSelectorHDR<3> &indexSelector, int fixupIndex, int precision, int indexRange, const float *channelWeights, bool fastIndexing, const ParallelMath::RoundTowardNearestForScope *rtn) + { + MSInt16 unquantizedEP[2][3]; + MSInt16 finishedUnquantizedEP[2][3]; + + { + ParallelMath::RoundUpForScope ru; + + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + { + MSInt16 qee = QuantizeSingleEndpointElementSigned(endPoints[epi][ch], precision, &ru); + UnquantizeSingleEndpointElementSigned(qee, precision, unquantizedEP[epi][ch], finishedUnquantizedEP[epi][ch]); + quantizedEndPoints[epi][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(qee); + } + } + } + + indexSelector.Init(channelWeights, unquantizedEP, finishedUnquantizedEP, indexRange); + indexSelector.InitHDR(indexRange, true, fastIndexing, channelWeights); + + MUInt15 halfRangeMinusOne = ParallelMath::MakeUInt15(static_cast<uint16_t>(indexRange / 2) - 1); + + MUInt15 index = fastIndexing ? indexSelector.SelectIndexHDRFast(floatPixelsColorSpace[fixupIndex], rtn) : indexSelector.SelectIndexHDRSlow(floatPixelsLinearWeighted[fixupIndex], rtn); + + ParallelMath::Int16CompFlag invert = ParallelMath::Less(halfRangeMinusOne, index); + + if (ParallelMath::AnySet(invert)) + { + ParallelMath::ConditionalSet(index, invert, MUInt15(ParallelMath::MakeUInt15(static_cast<uint16_t>(indexRange - 1)) - index)); + + indexSelector.ConditionalInvert(invert); + + for (int ch = 0; ch < 3; ch++) + { + MAInt16 firstEP = quantizedEndPoints[0][ch]; + MAInt16 secondEP = quantizedEndPoints[1][ch]; + + quantizedEndPoints[0][ch] = ParallelMath::Select(invert, secondEP, firstEP); + quantizedEndPoints[1][ch] = ParallelMath::Select(invert, firstEP, secondEP); + } + } + + indexes[fixupIndex] = index; + } + + static void QuantizeEndpointsUnsigned(const MSInt16 endPoints[2][3], const MFloat floatPixelsColorSpace[16][3], const MFloat floatPixelsLinearWeighted[16][3], MAInt16 quantizedEndPoints[2][3], MUInt15 indexes[16], IndexSelectorHDR<3> &indexSelector, int fixupIndex, int precision, int indexRange, const float *channelWeights, bool fastIndexing, const ParallelMath::RoundTowardNearestForScope *rtn) + { + MUInt16 unquantizedEP[2][3]; + MUInt16 finishedUnquantizedEP[2][3]; + + { + ParallelMath::RoundUpForScope ru; + + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + { + MUInt15 qee = QuantizeSingleEndpointElementUnsigned(ParallelMath::LosslessCast<MUInt15>::Cast(endPoints[epi][ch]), precision, &ru); + UnquantizeSingleEndpointElementUnsigned(qee, precision, unquantizedEP[epi][ch], finishedUnquantizedEP[epi][ch]); + quantizedEndPoints[epi][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(qee); + } + } + } + + indexSelector.Init(channelWeights, unquantizedEP, finishedUnquantizedEP, indexRange); + indexSelector.InitHDR(indexRange, false, fastIndexing, channelWeights); + + MUInt15 halfRangeMinusOne = ParallelMath::MakeUInt15(static_cast<uint16_t>(indexRange / 2) - 1); + + MUInt15 index = fastIndexing ? indexSelector.SelectIndexHDRFast(floatPixelsColorSpace[fixupIndex], rtn) : indexSelector.SelectIndexHDRSlow(floatPixelsLinearWeighted[fixupIndex], rtn); + + ParallelMath::Int16CompFlag invert = ParallelMath::Less(halfRangeMinusOne, index); + + if (ParallelMath::AnySet(invert)) + { + ParallelMath::ConditionalSet(index, invert, MUInt15(ParallelMath::MakeUInt15(static_cast<uint16_t>(indexRange - 1)) - index)); + + indexSelector.ConditionalInvert(invert); + + for (int ch = 0; ch < 3; ch++) + { + MAInt16 firstEP = quantizedEndPoints[0][ch]; + MAInt16 secondEP = quantizedEndPoints[1][ch]; + + quantizedEndPoints[0][ch] = ParallelMath::Select(invert, secondEP, firstEP); + quantizedEndPoints[1][ch] = ParallelMath::Select(invert, firstEP, secondEP); + } + } + + indexes[fixupIndex] = index; + } + + static void EvaluatePartitionedLegality(const MAInt16 ep0[2][3], const MAInt16 ep1[2][3], int aPrec, const int bPrec[3], bool isTransformed, MAInt16 outEncodedEPs[2][2][3], ParallelMath::Int16CompFlag& outIsLegal) + { + ParallelMath::Int16CompFlag allLegal = ParallelMath::MakeBoolInt16(true); + + MAInt16 aSignificantMask = ParallelMath::MakeAInt16(static_cast<int16_t>((1 << aPrec) - 1)); + + for (int ch = 0; ch < 3; ch++) + { + outEncodedEPs[0][0][ch] = ep0[0][ch]; + outEncodedEPs[0][1][ch] = ep0[1][ch]; + outEncodedEPs[1][0][ch] = ep1[0][ch]; + outEncodedEPs[1][1][ch] = ep1[1][ch]; + + if (isTransformed) + { + for (int subset = 0; subset < 2; subset++) + { + for (int epi = 0; epi < 2; epi++) + { + if (epi == 0 && subset == 0) + continue; + + MAInt16 bReduced = (outEncodedEPs[subset][epi][ch] & aSignificantMask); + + MSInt16 delta = ParallelMath::TruncateToPrecisionSigned(ParallelMath::LosslessCast<MSInt16>::Cast(ParallelMath::AbstractSubtract(outEncodedEPs[subset][epi][ch], outEncodedEPs[0][0][ch])), bPrec[ch]); + + outEncodedEPs[subset][epi][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(delta); + + MAInt16 reconstructed = (ParallelMath::AbstractAdd(outEncodedEPs[subset][epi][ch], outEncodedEPs[0][0][ch]) & aSignificantMask); + allLegal = allLegal & ParallelMath::Equal(reconstructed, bReduced); + } + } + } + + if (!ParallelMath::AnySet(allLegal)) + break; + } + + outIsLegal = allLegal; + } + + static void EvaluateSingleLegality(const MAInt16 ep[2][3], int aPrec, const int bPrec[3], bool isTransformed, MAInt16 outEncodedEPs[2][3], ParallelMath::Int16CompFlag& outIsLegal) + { + ParallelMath::Int16CompFlag allLegal = ParallelMath::MakeBoolInt16(true); + + MAInt16 aSignificantMask = ParallelMath::MakeAInt16(static_cast<int16_t>((1 << aPrec) - 1)); + + for (int ch = 0; ch < 3; ch++) + { + outEncodedEPs[0][ch] = ep[0][ch]; + outEncodedEPs[1][ch] = ep[1][ch]; + + if (isTransformed) + { + MAInt16 bReduced = (outEncodedEPs[1][ch] & aSignificantMask); + + MSInt16 delta = ParallelMath::TruncateToPrecisionSigned(ParallelMath::LosslessCast<MSInt16>::Cast(ParallelMath::AbstractSubtract(outEncodedEPs[1][ch], outEncodedEPs[0][ch])), bPrec[ch]); + + outEncodedEPs[1][ch] = ParallelMath::LosslessCast<MAInt16>::Cast(delta); + + MAInt16 reconstructed = (ParallelMath::AbstractAdd(outEncodedEPs[1][ch], outEncodedEPs[0][ch]) & aSignificantMask); + allLegal = allLegal & ParallelMath::Equal(reconstructed, bReduced); + } + } + + outIsLegal = allLegal; + } + + static void Pack(uint32_t flags, const PixelBlockF16* inputs, uint8_t* packedBlocks, const float channelWeights[4], bool isSigned, int numTweakRounds, int numRefineRounds) + { + if (numTweakRounds < 1) + numTweakRounds = 1; + else if (numTweakRounds > MaxTweakRounds) + numTweakRounds = MaxTweakRounds; + + if (numRefineRounds < 1) + numRefineRounds = 1; + else if (numRefineRounds > MaxRefineRounds) + numRefineRounds = MaxRefineRounds; + + bool fastIndexing = ((flags & cvtt::Flags::BC6H_FastIndexing) != 0); + float channelWeightsSq[3]; + + ParallelMath::RoundTowardNearestForScope rtn; + + MSInt16 pixels[16][3]; + MFloat floatPixels2CL[16][3]; + MFloat floatPixelsLinearWeighted[16][3]; + + MSInt16 low15Bits = ParallelMath::MakeSInt16(32767); + + for (int ch = 0; ch < 3; ch++) + channelWeightsSq[ch] = channelWeights[ch] * channelWeights[ch]; + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 3; ch++) + { + MSInt16 pixelValue; + ParallelMath::ConvertHDRInputs(inputs, px, ch, pixelValue); + + // Convert from sign+magnitude to 2CL + if (isSigned) + { + ParallelMath::Int16CompFlag negative = ParallelMath::Less(pixelValue, ParallelMath::MakeSInt16(0)); + MSInt16 magnitude = (pixelValue & low15Bits); + ParallelMath::ConditionalSet(pixelValue, negative, ParallelMath::MakeSInt16(0) - magnitude); + pixelValue = ParallelMath::Max(pixelValue, ParallelMath::MakeSInt16(-31743)); + } + else + pixelValue = ParallelMath::Max(pixelValue, ParallelMath::MakeSInt16(0)); + + pixelValue = ParallelMath::Min(pixelValue, ParallelMath::MakeSInt16(31743)); + + pixels[px][ch] = pixelValue; + floatPixels2CL[px][ch] = ParallelMath::ToFloat(pixelValue); + floatPixelsLinearWeighted[px][ch] = ParallelMath::TwosCLHalfToFloat(pixelValue) * channelWeights[ch]; + } + } + + MFloat preWeightedPixels[16][3]; + + BCCommon::PreWeightPixelsHDR<3>(preWeightedPixels, pixels, channelWeights); + + MAInt16 bestEndPoints[2][2][3]; + MUInt15 bestIndexes[16]; + MFloat bestError = ParallelMath::MakeFloat(FLT_MAX); + MUInt15 bestMode = ParallelMath::MakeUInt15(0); + MUInt15 bestPartition = ParallelMath::MakeUInt15(0); + + for (int px = 0; px < 16; px++) + bestIndexes[px] = ParallelMath::MakeUInt15(0); + + for (int subset = 0; subset < 2; subset++) + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 3; ch++) + bestEndPoints[subset][epi][ch] = ParallelMath::MakeAInt16(0); + + UnfinishedEndpoints<3> partitionedUFEP[32][2]; + UnfinishedEndpoints<3> singleUFEP; + + // Generate UFEP for partitions + for (int p = 0; p < 32; p++) + { + int partitionMask = BC7Data::g_partitionMap[p]; + + EndpointSelector<3, 8> epSelectors[2]; + + for (int pass = 0; pass < NumEndpointSelectorPasses; pass++) + { + for (int px = 0; px < 16; px++) + { + int subset = (partitionMask >> px) & 1; + epSelectors[subset].ContributePass(preWeightedPixels[px], pass, ParallelMath::MakeFloat(1.0f)); + } + + for (int subset = 0; subset < 2; subset++) + epSelectors[subset].FinishPass(pass); + } + + for (int subset = 0; subset < 2; subset++) + partitionedUFEP[p][subset] = epSelectors[subset].GetEndpoints(channelWeights); + } + + // Generate UFEP for single + { + EndpointSelector<3, 8> epSelector; + + for (int pass = 0; pass < NumEndpointSelectorPasses; pass++) + { + for (int px = 0; px < 16; px++) + epSelector.ContributePass(preWeightedPixels[px], pass, ParallelMath::MakeFloat(1.0f)); + + epSelector.FinishPass(pass); + } + + singleUFEP = epSelector.GetEndpoints(channelWeights); + } + + for (int partitionedInt = 0; partitionedInt < 2; partitionedInt++) + { + bool partitioned = (partitionedInt == 1); + + for (int aPrec = BC7Data::g_maxHDRPrecision; aPrec >= 0; aPrec--) + { + if (!BC7Data::g_hdrModesExistForPrecision[partitionedInt][aPrec]) + continue; + + int numPartitions = partitioned ? 32 : 1; + int numSubsets = partitioned ? 2 : 1; + int indexBits = partitioned ? 3 : 4; + int indexRange = (1 << indexBits); + + for (int p = 0; p < numPartitions; p++) + { + int partitionMask = partitioned ? BC7Data::g_partitionMap[p] : 0; + + const int MaxMetaRounds = MaxTweakRounds * MaxRefineRounds; + + MAInt16 metaEndPointsQuantized[MaxMetaRounds][2][2][3]; + MUInt15 metaIndexes[MaxMetaRounds][16]; + MFloat metaError[MaxMetaRounds][2]; + + bool roundValid[MaxMetaRounds][2]; + + for (int r = 0; r < MaxMetaRounds; r++) + for (int subset = 0; subset < 2; subset++) + roundValid[r][subset] = true; + + for (int subset = 0; subset < numSubsets; subset++) + { + for (int tweak = 0; tweak < MaxTweakRounds; tweak++) + { + EndpointRefiner<3> refiners[2]; + + bool abortRemainingRefines = false; + for (int refinePass = 0; refinePass < MaxRefineRounds; refinePass++) + { + int metaRound = tweak * MaxRefineRounds + refinePass; + + if (tweak >= numTweakRounds || refinePass >= numRefineRounds) + abortRemainingRefines = true; + + if (abortRemainingRefines) + { + roundValid[metaRound][subset] = false; + continue; + } + + MAInt16(&mrQuantizedEndPoints)[2][2][3] = metaEndPointsQuantized[metaRound]; + MUInt15(&mrIndexes)[16] = metaIndexes[metaRound]; + + MSInt16 endPointsColorSpace[2][3]; + + if (refinePass == 0) + { + UnfinishedEndpoints<3> ufep = partitioned ? partitionedUFEP[p][subset] : singleUFEP; + + if (isSigned) + ufep.FinishHDRSigned(tweak, indexRange, endPointsColorSpace[0], endPointsColorSpace[1], &rtn); + else + ufep.FinishHDRUnsigned(tweak, indexRange, endPointsColorSpace[0], endPointsColorSpace[1], &rtn); + } + else + refiners[subset].GetRefinedEndpointsHDR(endPointsColorSpace, isSigned, &rtn); + + refiners[subset].Init(indexRange, channelWeights); + + int fixupIndex = (subset == 0) ? 0 : BC7Data::g_fixupIndexes2[p]; + + IndexSelectorHDR<3> indexSelector; + if (isSigned) + QuantizeEndpointsSigned(endPointsColorSpace, floatPixels2CL, floatPixelsLinearWeighted, mrQuantizedEndPoints[subset], mrIndexes, indexSelector, fixupIndex, aPrec, indexRange, channelWeights, fastIndexing, &rtn); + else + QuantizeEndpointsUnsigned(endPointsColorSpace, floatPixels2CL, floatPixelsLinearWeighted, mrQuantizedEndPoints[subset], mrIndexes, indexSelector, fixupIndex, aPrec, indexRange, channelWeights, fastIndexing, &rtn); + + if (metaRound > 0) + { + ParallelMath::Int16CompFlag anySame = ParallelMath::MakeBoolInt16(false); + + for (int prevRound = 0; prevRound < metaRound; prevRound++) + { + MAInt16(&prevRoundEPs)[2][3] = metaEndPointsQuantized[prevRound][subset]; + + ParallelMath::Int16CompFlag same = ParallelMath::MakeBoolInt16(true); + + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 3; ch++) + same = (same & ParallelMath::Equal(prevRoundEPs[epi][ch], mrQuantizedEndPoints[subset][epi][ch])); + + anySame = (anySame | same); + if (ParallelMath::AllSet(anySame)) + break; + } + + if (ParallelMath::AllSet(anySame)) + { + roundValid[metaRound][subset] = false; + continue; + } + } + + MFloat subsetError = ParallelMath::MakeFloatZero(); + + { + for (int px = 0; px < 16; px++) + { + if (subset != ((partitionMask >> px) & 1)) + continue; + + MUInt15 index; + if (px == fixupIndex) + index = mrIndexes[px]; + else + { + index = fastIndexing ? indexSelector.SelectIndexHDRFast(floatPixels2CL[px], &rtn) : indexSelector.SelectIndexHDRSlow(floatPixelsLinearWeighted[px], &rtn); + mrIndexes[px] = index; + } + + MSInt16 reconstructed[3]; + if (isSigned) + indexSelector.ReconstructHDRSigned(mrIndexes[px], reconstructed); + else + indexSelector.ReconstructHDRUnsigned(mrIndexes[px], reconstructed); + + subsetError = subsetError + (fastIndexing ? BCCommon::ComputeErrorHDRFast<3>(flags, reconstructed, pixels[px], channelWeightsSq) : BCCommon::ComputeErrorHDRSlow<3>(flags, reconstructed, pixels[px], channelWeightsSq)); + + if (refinePass != numRefineRounds - 1) + refiners[subset].ContributeUnweightedPW(preWeightedPixels[px], index); + } + } + + metaError[metaRound][subset] = subsetError; + } + } + } + + // Now we have a bunch of attempts, but not all of them will fit in the delta coding scheme + int numMeta1 = partitioned ? MaxMetaRounds : 1; + for (int meta0 = 0; meta0 < MaxMetaRounds; meta0++) + { + if (!roundValid[meta0][0]) + continue; + + for (int meta1 = 0; meta1 < numMeta1; meta1++) + { + MFloat combinedError = metaError[meta0][0]; + if (partitioned) + { + if (!roundValid[meta1][1]) + continue; + + combinedError = combinedError + metaError[meta1][1]; + } + + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(combinedError, bestError); + if (!ParallelMath::AnySet(errorBetter)) + continue; + + ParallelMath::Int16CompFlag needsCommit = ParallelMath::FloatFlagToInt16(errorBetter); + + // Figure out if this is encodable + for (int mode = 0; mode < BC7Data::g_numHDRModes; mode++) + { + const BC7Data::BC6HModeInfo &modeInfo = BC7Data::g_hdrModes[mode]; + + if (modeInfo.m_partitioned != partitioned || modeInfo.m_aPrec != aPrec) + continue; + + MAInt16 encodedEPs[2][2][3]; + ParallelMath::Int16CompFlag isLegal; + if (partitioned) + EvaluatePartitionedLegality(metaEndPointsQuantized[meta0][0], metaEndPointsQuantized[meta1][1], modeInfo.m_aPrec, modeInfo.m_bPrec, modeInfo.m_transformed, encodedEPs, isLegal); + else + EvaluateSingleLegality(metaEndPointsQuantized[meta0][0], modeInfo.m_aPrec, modeInfo.m_bPrec, modeInfo.m_transformed, encodedEPs[0], isLegal); + + ParallelMath::Int16CompFlag isLegalAndBetter = (ParallelMath::FloatFlagToInt16(errorBetter) & isLegal); + if (!ParallelMath::AnySet(isLegalAndBetter)) + continue; + + ParallelMath::FloatCompFlag isLegalAndBetterFloat = ParallelMath::Int16FlagToFloat(isLegalAndBetter); + + ParallelMath::ConditionalSet(bestError, isLegalAndBetterFloat, combinedError); + ParallelMath::ConditionalSet(bestMode, isLegalAndBetter, ParallelMath::MakeUInt15(static_cast<uint16_t>(mode))); + ParallelMath::ConditionalSet(bestPartition, isLegalAndBetter, ParallelMath::MakeUInt15(static_cast<uint16_t>(p))); + + for (int subset = 0; subset < numSubsets; subset++) + { + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + ParallelMath::ConditionalSet(bestEndPoints[subset][epi][ch], isLegalAndBetter, encodedEPs[subset][epi][ch]); + } + } + + for (int px = 0; px < 16; px++) + { + int subset = ((partitionMask >> px) & 1); + if (subset == 0) + ParallelMath::ConditionalSet(bestIndexes[px], isLegalAndBetter, metaIndexes[meta0][px]); + else + ParallelMath::ConditionalSet(bestIndexes[px], isLegalAndBetter, metaIndexes[meta1][px]); + } + + needsCommit = ParallelMath::AndNot(needsCommit, isLegalAndBetter); + if (!ParallelMath::AnySet(needsCommit)) + break; + } + } + } + } + } + } + + // At this point, everything should be set + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + ParallelMath::ScalarUInt16 mode = ParallelMath::Extract(bestMode, block); + ParallelMath::ScalarUInt16 partition = ParallelMath::Extract(bestPartition, block); + int32_t eps[2][2][3]; + ParallelMath::ScalarUInt16 indexes[16]; + + const BC7Data::BC6HModeInfo& modeInfo = BC7Data::g_hdrModes[mode]; + + const BC6HData::ModeDescriptor* desc = BC6HData::g_modeDescriptors[mode]; + + const size_t headerBits = modeInfo.m_partitioned ? 82 : 65; + + for (int subset = 0; subset < 2; subset++) + { + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + eps[subset][epi][ch] = ParallelMath::Extract(bestEndPoints[subset][epi][ch], block); + } + } + + for (int px = 0; px < 16; px++) + indexes[px] = ParallelMath::Extract(bestIndexes[px], block); + + uint16_t modeID = modeInfo.m_modeID; + + PackingVector pv; + pv.Init(); + + for (size_t i = 0; i < headerBits; i++) + { + int32_t codedValue = 0; + switch (desc[i].m_eField) + { + case BC6HData::M: codedValue = modeID; break; + case BC6HData::D: codedValue = partition; break; + case BC6HData::RW: codedValue = eps[0][0][0]; break; + case BC6HData::RX: codedValue = eps[0][1][0]; break; + case BC6HData::RY: codedValue = eps[1][0][0]; break; + case BC6HData::RZ: codedValue = eps[1][1][0]; break; + case BC6HData::GW: codedValue = eps[0][0][1]; break; + case BC6HData::GX: codedValue = eps[0][1][1]; break; + case BC6HData::GY: codedValue = eps[1][0][1]; break; + case BC6HData::GZ: codedValue = eps[1][1][1]; break; + case BC6HData::BW: codedValue = eps[0][0][2]; break; + case BC6HData::BX: codedValue = eps[0][1][2]; break; + case BC6HData::BY: codedValue = eps[1][0][2]; break; + case BC6HData::BZ: codedValue = eps[1][1][2]; break; + default: assert(false); break; + } + + pv.Pack(static_cast<uint16_t>((codedValue >> desc[i].m_uBit) & 1), 1); + } + + int fixupIndex1 = 0; + int indexBits = 4; + if (modeInfo.m_partitioned) + { + fixupIndex1 = BC7Data::g_fixupIndexes2[partition]; + indexBits = 3; + } + + for (int px = 0; px < 16; px++) + { + ParallelMath::ScalarUInt16 index = ParallelMath::Extract(bestIndexes[px], block); + if (px == 0 || px == fixupIndex1) + pv.Pack(index, indexBits - 1); + else + pv.Pack(index, indexBits); + } + + pv.Flush(packedBlocks + 16 * block); + } + } + + static void SignExtendSingle(int &v, int bits) + { + if (v & (1 << (bits - 1))) + v |= -(1 << bits); + } + + static void UnpackOne(PixelBlockF16 &output, const uint8_t *pBC, bool isSigned) + { + UnpackingVector pv; + pv.Init(pBC); + + int numModeBits = 2; + int modeBits = pv.Unpack(2); + if (modeBits != 0 && modeBits != 1) + { + modeBits |= pv.Unpack(3) << 2; + numModeBits += 3; + } + + int mode = -1; + for (int possibleMode = 0; possibleMode < BC7Data::g_numHDRModes; possibleMode++) + { + if (BC7Data::g_hdrModes[possibleMode].m_modeID == modeBits) + { + mode = possibleMode; + break; + } + } + + if (mode < 0) + { + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 3; ch++) + output.m_pixels[px][ch] = 0; + output.m_pixels[px][3] = 0x3c00; // 1.0 + } + return; + } + + const BC7Data::BC6HModeInfo& modeInfo = BC7Data::g_hdrModes[mode]; + const size_t headerBits = modeInfo.m_partitioned ? 82 : 65; + const BC6HData::ModeDescriptor* desc = BC6HData::g_modeDescriptors[mode]; + + int32_t partition = 0; + int32_t eps[2][2][3]; + + for (int subset = 0; subset < 2; subset++) + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 3; ch++) + eps[subset][epi][ch] = 0; + + for (size_t i = numModeBits; i < headerBits; i++) + { + int32_t *pCodedValue = NULL; + + switch (desc[i].m_eField) + { + case BC6HData::D: pCodedValue = &partition; break; + case BC6HData::RW: pCodedValue = &eps[0][0][0]; break; + case BC6HData::RX: pCodedValue = &eps[0][1][0]; break; + case BC6HData::RY: pCodedValue = &eps[1][0][0]; break; + case BC6HData::RZ: pCodedValue = &eps[1][1][0]; break; + case BC6HData::GW: pCodedValue = &eps[0][0][1]; break; + case BC6HData::GX: pCodedValue = &eps[0][1][1]; break; + case BC6HData::GY: pCodedValue = &eps[1][0][1]; break; + case BC6HData::GZ: pCodedValue = &eps[1][1][1]; break; + case BC6HData::BW: pCodedValue = &eps[0][0][2]; break; + case BC6HData::BX: pCodedValue = &eps[0][1][2]; break; + case BC6HData::BY: pCodedValue = &eps[1][0][2]; break; + case BC6HData::BZ: pCodedValue = &eps[1][1][2]; break; + default: assert(false); break; + } + + (*pCodedValue) |= pv.Unpack(1) << desc[i].m_uBit; + } + + + uint16_t modeID = modeInfo.m_modeID; + + int fixupIndex1 = 0; + int indexBits = 4; + int numSubsets = 1; + if (modeInfo.m_partitioned) + { + fixupIndex1 = BC7Data::g_fixupIndexes2[partition]; + indexBits = 3; + numSubsets = 2; + } + + int indexes[16]; + for (int px = 0; px < 16; px++) + { + if (px == 0 || px == fixupIndex1) + indexes[px] = pv.Unpack(indexBits - 1); + else + indexes[px] = pv.Unpack(indexBits); + } + + if (modeInfo.m_partitioned) + { + for (int ch = 0; ch < 3; ch++) + { + if (isSigned) + SignExtendSingle(eps[0][0][ch], modeInfo.m_aPrec); + if (modeInfo.m_transformed || isSigned) + { + SignExtendSingle(eps[0][1][ch], modeInfo.m_bPrec[ch]); + SignExtendSingle(eps[1][0][ch], modeInfo.m_bPrec[ch]); + SignExtendSingle(eps[1][1][ch], modeInfo.m_bPrec[ch]); + } + } + } + else + { + for (int ch = 0; ch < 3; ch++) + { + if (isSigned) + SignExtendSingle(eps[0][0][ch], modeInfo.m_aPrec); + if (modeInfo.m_transformed || isSigned) + SignExtendSingle(eps[0][1][ch], modeInfo.m_bPrec[ch]); + } + } + + int aPrec = modeInfo.m_aPrec; + + if (modeInfo.m_transformed) + { + for (int ch = 0; ch < 3; ch++) + { + int wrapMask = (1 << aPrec) - 1; + + eps[0][1][ch] = ((eps[0][0][ch] + eps[0][1][ch]) & wrapMask); + if (isSigned) + SignExtendSingle(eps[0][1][ch], aPrec); + + if (modeInfo.m_partitioned) + { + eps[1][0][ch] = ((eps[0][0][ch] + eps[1][0][ch]) & wrapMask); + eps[1][1][ch] = ((eps[0][0][ch] + eps[1][1][ch]) & wrapMask); + + if (isSigned) + { + SignExtendSingle(eps[1][0][ch], aPrec); + SignExtendSingle(eps[1][1][ch], aPrec); + } + } + } + } + + // Unquantize endpoints + for (int subset = 0; subset < numSubsets; subset++) + { + for (int epi = 0; epi < 2; epi++) + { + for (int ch = 0; ch < 3; ch++) + { + int &v = eps[subset][epi][ch]; + + if (isSigned) + { + if (aPrec >= 16) + { + // Nothing + } + else + { + bool s = false; + int comp = v; + if (v < 0) + { + s = true; + comp = -comp; + } + + int unq = 0; + if (comp == 0) + unq = 0; + else if (comp >= ((1 << (aPrec - 1)) - 1)) + unq = 0x7fff; + else + unq = ((comp << 15) + 0x4000) >> (aPrec - 1); + + if (s) + unq = -unq; + + v = unq; + } + } + else + { + if (aPrec >= 15) + { + // Nothing + } + else if (v == 0) + { + // Nothing + } + else if (v == ((1 << aPrec) - 1)) + v = 0xffff; + else + v = ((v << 16) + 0x8000) >> aPrec; + } + } + } + } + + const int *weights = BC7Data::g_weightTables[indexBits]; + + for (int px = 0; px < 16; px++) + { + int subset = 0; + if (modeInfo.m_partitioned) + subset = (BC7Data::g_partitionMap[partition] >> px) & 1; + + int w = weights[indexes[px]]; + for (int ch = 0; ch < 3; ch++) + { + int comp = ((64 - w) * eps[subset][0][ch] + w * eps[subset][1][ch] + 32) >> 6; + + if (isSigned) + { + if (comp < 0) + comp = -(((-comp) * 31) >> 5); + else + comp = (comp * 31) >> 5; + + int s = 0; + if (comp < 0) + { + s = 0x8000; + comp = -comp; + } + + output.m_pixels[px][ch] = static_cast<uint16_t>(s | comp); + } + else + { + comp = (comp * 31) >> 6; + output.m_pixels[px][ch] = static_cast<uint16_t>(comp); + } + } + output.m_pixels[px][3] = 0x3c00; // 1.0 + } + } + }; + + namespace S3TCSingleColorTables + { + struct SingleColorTableEntry + { + uint8_t m_min; + uint8_t m_max; + uint8_t m_actualColor; + uint8_t m_span; + }; + + SingleColorTableEntry g_singleColor5_3[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 8, 0, 2, 8 }, { 8, 0, 2, 8 }, { 0, 8, 5, 8 }, { 0, 8, 5, 8 }, { 0, 8, 5, 8 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 16, 8, 10, 8 }, { 33, 0, 11, 33 }, { 8, 16, 13, 8 }, { 8, 16, 13, 8 }, { 8, 16, 13, 8 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 24, 16, 18, 8 }, { 41, 8, 19, 33 }, { 16, 24, 21, 8 }, { 16, 24, 21, 8 }, { 0, 33, 22, 33 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 33, 24, 27, 9 }, { 33, 24, 27, 9 }, { 33, 24, 27, 9 }, { 41, 24, 29, 17 }, { 24, 33, 30, 9 }, { 24, 33, 30, 9 }, + { 16, 41, 32, 25 }, { 33, 33, 33, 0 }, { 33, 33, 33, 0 }, { 41, 33, 35, 8 }, { 41, 33, 35, 8 }, { 33, 41, 38, 8 }, { 33, 41, 38, 8 }, { 33, 41, 38, 8 }, + { 24, 49, 40, 25 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 49, 41, 43, 8 }, { 66, 33, 44, 33 }, { 41, 49, 46, 8 }, { 41, 49, 46, 8 }, { 41, 49, 46, 8 }, + { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 57, 49, 51, 8 }, { 74, 41, 52, 33 }, { 49, 57, 54, 8 }, { 49, 57, 54, 8 }, { 33, 66, 55, 33 }, + { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 66, 57, 60, 9 }, { 66, 57, 60, 9 }, { 66, 57, 60, 9 }, { 74, 57, 62, 17 }, { 57, 66, 63, 9 }, + { 57, 66, 63, 9 }, { 49, 74, 65, 25 }, { 66, 66, 66, 0 }, { 66, 66, 66, 0 }, { 74, 66, 68, 8 }, { 74, 66, 68, 8 }, { 66, 74, 71, 8 }, { 66, 74, 71, 8 }, + { 66, 74, 71, 8 }, { 57, 82, 73, 25 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 82, 74, 76, 8 }, { 99, 66, 77, 33 }, { 74, 82, 79, 8 }, { 74, 82, 79, 8 }, + { 74, 82, 79, 8 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 90, 82, 84, 8 }, { 107, 74, 85, 33 }, { 82, 90, 87, 8 }, { 82, 90, 87, 8 }, + { 66, 99, 88, 33 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 99, 90, 93, 9 }, { 99, 90, 93, 9 }, { 99, 90, 93, 9 }, { 107, 90, 95, 17 }, + { 90, 99, 96, 9 }, { 90, 99, 96, 9 }, { 82, 107, 98, 25 }, { 99, 99, 99, 0 }, { 99, 99, 99, 0 }, { 107, 99, 101, 8 }, { 107, 99, 101, 8 }, { 99, 107, 104, 8 }, + { 99, 107, 104, 8 }, { 99, 107, 104, 8 }, { 90, 115, 106, 25 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 115, 107, 109, 8 }, { 132, 99, 110, 33 }, { 107, 115, 112, 8 }, + { 107, 115, 112, 8 }, { 107, 115, 112, 8 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 123, 115, 117, 8 }, { 140, 107, 118, 33 }, { 115, 123, 120, 8 }, + { 115, 123, 120, 8 }, { 99, 132, 121, 33 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 132, 123, 126, 9 }, { 132, 123, 126, 9 }, { 132, 123, 126, 9 }, + { 140, 123, 128, 17 }, { 123, 132, 129, 9 }, { 123, 132, 129, 9 }, { 115, 140, 131, 25 }, { 132, 132, 132, 0 }, { 132, 132, 132, 0 }, { 140, 132, 134, 8 }, { 140, 132, 134, 8 }, + { 132, 140, 137, 8 }, { 132, 140, 137, 8 }, { 132, 140, 137, 8 }, { 123, 148, 139, 25 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 148, 140, 142, 8 }, { 165, 132, 143, 33 }, + { 140, 148, 145, 8 }, { 140, 148, 145, 8 }, { 140, 148, 145, 8 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 156, 148, 150, 8 }, { 173, 140, 151, 33 }, + { 148, 156, 153, 8 }, { 148, 156, 153, 8 }, { 132, 165, 154, 33 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 165, 156, 159, 9 }, { 165, 156, 159, 9 }, + { 165, 156, 159, 9 }, { 173, 156, 161, 17 }, { 156, 165, 162, 9 }, { 156, 165, 162, 9 }, { 148, 173, 164, 25 }, { 165, 165, 165, 0 }, { 165, 165, 165, 0 }, { 173, 165, 167, 8 }, + { 173, 165, 167, 8 }, { 165, 173, 170, 8 }, { 165, 173, 170, 8 }, { 165, 173, 170, 8 }, { 156, 181, 172, 25 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, { 181, 173, 175, 8 }, + { 198, 165, 176, 33 }, { 173, 181, 178, 8 }, { 173, 181, 178, 8 }, { 173, 181, 178, 8 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 189, 181, 183, 8 }, + { 206, 173, 184, 33 }, { 181, 189, 186, 8 }, { 181, 189, 186, 8 }, { 165, 198, 187, 33 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 198, 189, 192, 9 }, + { 198, 189, 192, 9 }, { 198, 189, 192, 9 }, { 206, 189, 194, 17 }, { 189, 198, 195, 9 }, { 189, 198, 195, 9 }, { 181, 206, 197, 25 }, { 198, 198, 198, 0 }, { 198, 198, 198, 0 }, + { 206, 198, 200, 8 }, { 206, 198, 200, 8 }, { 198, 206, 203, 8 }, { 198, 206, 203, 8 }, { 198, 206, 203, 8 }, { 189, 214, 205, 25 }, { 206, 206, 206, 0 }, { 206, 206, 206, 0 }, + { 214, 206, 208, 8 }, { 231, 198, 209, 33 }, { 206, 214, 211, 8 }, { 206, 214, 211, 8 }, { 206, 214, 211, 8 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, + { 222, 214, 216, 8 }, { 239, 206, 217, 33 }, { 214, 222, 219, 8 }, { 214, 222, 219, 8 }, { 198, 231, 220, 33 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, + { 231, 222, 225, 9 }, { 231, 222, 225, 9 }, { 231, 222, 225, 9 }, { 239, 222, 227, 17 }, { 222, 231, 228, 9 }, { 222, 231, 228, 9 }, { 214, 239, 230, 25 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 239, 231, 233, 8 }, { 239, 231, 233, 8 }, { 231, 239, 236, 8 }, { 231, 239, 236, 8 }, { 231, 239, 236, 8 }, { 222, 247, 238, 25 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 247, 239, 241, 8 }, { 247, 239, 241, 8 }, { 239, 247, 244, 8 }, { 239, 247, 244, 8 }, { 239, 247, 244, 8 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 255, 247, 249, 8 }, { 255, 247, 249, 8 }, { 247, 255, 252, 8 }, { 247, 255, 252, 8 }, { 247, 255, 252, 8 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor6_3[256] = + { + { 0, 0, 0, 0 }, { 4, 0, 1, 4 }, { 0, 4, 2, 4 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 8, 4, 5, 4 }, { 4, 8, 6, 4 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 12, 8, 9, 4 }, { 8, 12, 10, 4 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 16, 12, 13, 4 }, { 12, 16, 14, 4 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 20, 16, 17, 4 }, { 16, 20, 18, 4 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 24, 20, 21, 4 }, { 20, 24, 22, 4 }, { 69, 0, 23, 69 }, + { 24, 24, 24, 0 }, { 28, 24, 25, 4 }, { 24, 28, 26, 4 }, { 65, 8, 27, 57 }, { 28, 28, 28, 0 }, { 32, 28, 29, 4 }, { 28, 32, 30, 4 }, { 69, 12, 31, 57 }, + { 32, 32, 32, 0 }, { 36, 32, 33, 4 }, { 32, 36, 34, 4 }, { 65, 20, 35, 45 }, { 36, 36, 36, 0 }, { 40, 36, 37, 4 }, { 36, 40, 38, 4 }, { 69, 24, 39, 45 }, + { 40, 40, 40, 0 }, { 44, 40, 41, 4 }, { 40, 44, 42, 4 }, { 65, 32, 43, 33 }, { 44, 44, 44, 0 }, { 48, 44, 45, 4 }, { 44, 48, 46, 4 }, { 69, 36, 47, 33 }, + { 48, 48, 48, 0 }, { 52, 48, 49, 4 }, { 48, 52, 50, 4 }, { 65, 44, 51, 21 }, { 52, 52, 52, 0 }, { 56, 52, 53, 4 }, { 52, 56, 54, 4 }, { 69, 48, 55, 21 }, + { 56, 56, 56, 0 }, { 60, 56, 57, 4 }, { 56, 60, 58, 4 }, { 65, 56, 59, 9 }, { 60, 60, 60, 0 }, { 65, 60, 61, 5 }, { 56, 65, 62, 9 }, { 60, 65, 63, 5 }, + { 56, 69, 64, 13 }, { 65, 65, 65, 0 }, { 69, 65, 66, 4 }, { 65, 69, 67, 4 }, { 60, 73, 68, 13 }, { 69, 69, 69, 0 }, { 73, 69, 70, 4 }, { 69, 73, 71, 4 }, + { 56, 81, 72, 25 }, { 73, 73, 73, 0 }, { 77, 73, 74, 4 }, { 73, 77, 75, 4 }, { 60, 85, 76, 25 }, { 77, 77, 77, 0 }, { 81, 77, 78, 4 }, { 77, 81, 79, 4 }, + { 56, 93, 80, 37 }, { 81, 81, 81, 0 }, { 85, 81, 82, 4 }, { 81, 85, 83, 4 }, { 60, 97, 84, 37 }, { 85, 85, 85, 0 }, { 89, 85, 86, 4 }, { 85, 89, 87, 4 }, + { 56, 105, 88, 49 }, { 89, 89, 89, 0 }, { 93, 89, 90, 4 }, { 89, 93, 91, 4 }, { 60, 109, 92, 49 }, { 93, 93, 93, 0 }, { 97, 93, 94, 4 }, { 93, 97, 95, 4 }, + { 134, 77, 96, 57 }, { 97, 97, 97, 0 }, { 101, 97, 98, 4 }, { 97, 101, 99, 4 }, { 130, 85, 100, 45 }, { 101, 101, 101, 0 }, { 105, 101, 102, 4 }, { 101, 105, 103, 4 }, + { 134, 89, 104, 45 }, { 105, 105, 105, 0 }, { 109, 105, 106, 4 }, { 105, 109, 107, 4 }, { 130, 97, 108, 33 }, { 109, 109, 109, 0 }, { 113, 109, 110, 4 }, { 109, 113, 111, 4 }, + { 134, 101, 112, 33 }, { 113, 113, 113, 0 }, { 117, 113, 114, 4 }, { 113, 117, 115, 4 }, { 130, 109, 116, 21 }, { 117, 117, 117, 0 }, { 121, 117, 118, 4 }, { 117, 121, 119, 4 }, + { 134, 113, 120, 21 }, { 121, 121, 121, 0 }, { 125, 121, 122, 4 }, { 121, 125, 123, 4 }, { 130, 121, 124, 9 }, { 125, 125, 125, 0 }, { 130, 125, 126, 5 }, { 121, 130, 127, 9 }, + { 125, 130, 128, 5 }, { 121, 134, 129, 13 }, { 130, 130, 130, 0 }, { 134, 130, 131, 4 }, { 130, 134, 132, 4 }, { 125, 138, 133, 13 }, { 134, 134, 134, 0 }, { 138, 134, 135, 4 }, + { 134, 138, 136, 4 }, { 121, 146, 137, 25 }, { 138, 138, 138, 0 }, { 142, 138, 139, 4 }, { 138, 142, 140, 4 }, { 125, 150, 141, 25 }, { 142, 142, 142, 0 }, { 146, 142, 143, 4 }, + { 142, 146, 144, 4 }, { 121, 158, 145, 37 }, { 146, 146, 146, 0 }, { 150, 146, 147, 4 }, { 146, 150, 148, 4 }, { 125, 162, 149, 37 }, { 150, 150, 150, 0 }, { 154, 150, 151, 4 }, + { 150, 154, 152, 4 }, { 121, 170, 153, 49 }, { 154, 154, 154, 0 }, { 158, 154, 155, 4 }, { 154, 158, 156, 4 }, { 125, 174, 157, 49 }, { 158, 158, 158, 0 }, { 162, 158, 159, 4 }, + { 158, 162, 160, 4 }, { 199, 142, 161, 57 }, { 162, 162, 162, 0 }, { 166, 162, 163, 4 }, { 162, 166, 164, 4 }, { 195, 150, 165, 45 }, { 166, 166, 166, 0 }, { 170, 166, 167, 4 }, + { 166, 170, 168, 4 }, { 199, 154, 169, 45 }, { 170, 170, 170, 0 }, { 174, 170, 171, 4 }, { 170, 174, 172, 4 }, { 195, 162, 173, 33 }, { 174, 174, 174, 0 }, { 178, 174, 175, 4 }, + { 174, 178, 176, 4 }, { 199, 166, 177, 33 }, { 178, 178, 178, 0 }, { 182, 178, 179, 4 }, { 178, 182, 180, 4 }, { 195, 174, 181, 21 }, { 182, 182, 182, 0 }, { 186, 182, 183, 4 }, + { 182, 186, 184, 4 }, { 199, 178, 185, 21 }, { 186, 186, 186, 0 }, { 190, 186, 187, 4 }, { 186, 190, 188, 4 }, { 195, 186, 189, 9 }, { 190, 190, 190, 0 }, { 195, 190, 191, 5 }, + { 186, 195, 192, 9 }, { 190, 195, 193, 5 }, { 186, 199, 194, 13 }, { 195, 195, 195, 0 }, { 199, 195, 196, 4 }, { 195, 199, 197, 4 }, { 190, 203, 198, 13 }, { 199, 199, 199, 0 }, + { 203, 199, 200, 4 }, { 199, 203, 201, 4 }, { 186, 211, 202, 25 }, { 203, 203, 203, 0 }, { 207, 203, 204, 4 }, { 203, 207, 205, 4 }, { 190, 215, 206, 25 }, { 207, 207, 207, 0 }, + { 211, 207, 208, 4 }, { 207, 211, 209, 4 }, { 186, 223, 210, 37 }, { 211, 211, 211, 0 }, { 215, 211, 212, 4 }, { 211, 215, 213, 4 }, { 190, 227, 214, 37 }, { 215, 215, 215, 0 }, + { 219, 215, 216, 4 }, { 215, 219, 217, 4 }, { 186, 235, 218, 49 }, { 219, 219, 219, 0 }, { 223, 219, 220, 4 }, { 219, 223, 221, 4 }, { 190, 239, 222, 49 }, { 223, 223, 223, 0 }, + { 227, 223, 224, 4 }, { 223, 227, 225, 4 }, { 186, 247, 226, 61 }, { 227, 227, 227, 0 }, { 231, 227, 228, 4 }, { 227, 231, 229, 4 }, { 190, 251, 230, 61 }, { 231, 231, 231, 0 }, + { 235, 231, 232, 4 }, { 231, 235, 233, 4 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 239, 235, 236, 4 }, { 235, 239, 237, 4 }, { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, + { 243, 239, 240, 4 }, { 239, 243, 241, 4 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 247, 243, 244, 4 }, { 243, 247, 245, 4 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 251, 247, 248, 4 }, { 247, 251, 249, 4 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 255, 251, 252, 4 }, { 251, 255, 253, 4 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor5_2[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 8, 4, 8 }, { 0, 8, 4, 8 }, { 0, 8, 4, 8 }, { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 16, 12, 8 }, { 8, 16, 12, 8 }, { 8, 16, 12, 8 }, { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 24, 20, 8 }, { 16, 24, 20, 8 }, { 16, 24, 20, 8 }, { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 41, 32, 17 }, + { 24, 41, 32, 17 }, { 33, 33, 33, 0 }, { 33, 33, 33, 0 }, { 24, 49, 36, 25 }, { 24, 49, 36, 25 }, { 33, 41, 37, 8 }, { 33, 41, 37, 8 }, { 24, 57, 40, 33 }, + { 24, 57, 40, 33 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 41, 49, 45, 8 }, { 41, 49, 45, 8 }, { 41, 49, 45, 8 }, { 49, 49, 49, 0 }, + { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 57, 53, 8 }, { 49, 57, 53, 8 }, { 49, 57, 53, 8 }, { 57, 57, 57, 0 }, + { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, + { 57, 74, 65, 17 }, { 57, 74, 65, 17 }, { 66, 66, 66, 0 }, { 66, 66, 66, 0 }, { 57, 82, 69, 25 }, { 57, 82, 69, 25 }, { 66, 74, 70, 8 }, { 66, 74, 70, 8 }, + { 57, 90, 73, 33 }, { 57, 90, 73, 33 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 74, 82, 78, 8 }, { 74, 82, 78, 8 }, { 74, 82, 78, 8 }, + { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 90, 86, 8 }, { 82, 90, 86, 8 }, { 82, 90, 86, 8 }, + { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 99, 94, 9 }, { 90, 99, 94, 9 }, { 90, 99, 94, 9 }, + { 90, 99, 94, 9 }, { 90, 107, 98, 17 }, { 90, 107, 98, 17 }, { 99, 99, 99, 0 }, { 99, 99, 99, 0 }, { 90, 115, 102, 25 }, { 90, 115, 102, 25 }, { 99, 107, 103, 8 }, + { 99, 107, 103, 8 }, { 90, 123, 106, 33 }, { 90, 123, 106, 33 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 107, 115, 111, 8 }, { 107, 115, 111, 8 }, + { 107, 115, 111, 8 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 123, 119, 8 }, { 115, 123, 119, 8 }, + { 115, 123, 119, 8 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 132, 127, 9 }, { 123, 132, 127, 9 }, + { 123, 132, 127, 9 }, { 123, 132, 127, 9 }, { 123, 140, 131, 17 }, { 123, 140, 131, 17 }, { 132, 132, 132, 0 }, { 132, 132, 132, 0 }, { 123, 148, 135, 25 }, { 123, 148, 135, 25 }, + { 132, 140, 136, 8 }, { 132, 140, 136, 8 }, { 123, 156, 139, 33 }, { 123, 156, 139, 33 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 140, 148, 144, 8 }, + { 140, 148, 144, 8 }, { 140, 148, 144, 8 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 156, 152, 8 }, + { 148, 156, 152, 8 }, { 148, 156, 152, 8 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 165, 160, 9 }, + { 156, 165, 160, 9 }, { 156, 165, 160, 9 }, { 156, 165, 160, 9 }, { 156, 173, 164, 17 }, { 156, 173, 164, 17 }, { 165, 165, 165, 0 }, { 165, 165, 165, 0 }, { 156, 181, 168, 25 }, + { 156, 181, 168, 25 }, { 165, 173, 169, 8 }, { 165, 173, 169, 8 }, { 156, 189, 172, 33 }, { 156, 189, 172, 33 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, + { 173, 181, 177, 8 }, { 173, 181, 177, 8 }, { 173, 181, 177, 8 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, + { 181, 189, 185, 8 }, { 181, 189, 185, 8 }, { 181, 189, 185, 8 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, + { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 206, 197, 17 }, { 189, 206, 197, 17 }, { 198, 198, 198, 0 }, { 198, 198, 198, 0 }, + { 189, 214, 201, 25 }, { 189, 214, 201, 25 }, { 198, 206, 202, 8 }, { 198, 206, 202, 8 }, { 189, 222, 205, 33 }, { 189, 222, 205, 33 }, { 206, 206, 206, 0 }, { 206, 206, 206, 0 }, + { 206, 206, 206, 0 }, { 206, 214, 210, 8 }, { 206, 214, 210, 8 }, { 206, 214, 210, 8 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, + { 214, 214, 214, 0 }, { 214, 222, 218, 8 }, { 214, 222, 218, 8 }, { 214, 222, 218, 8 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, + { 222, 222, 222, 0 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 239, 230, 17 }, { 222, 239, 230, 17 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 222, 247, 234, 25 }, { 222, 247, 234, 25 }, { 231, 239, 235, 8 }, { 231, 239, 235, 8 }, { 222, 255, 238, 33 }, { 222, 255, 238, 33 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, { 239, 247, 243, 8 }, { 239, 247, 243, 8 }, { 239, 247, 243, 8 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, { 247, 255, 251, 8 }, { 247, 255, 251, 8 }, { 247, 255, 251, 8 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor6_2[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 4, 2, 4 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 4, 8, 6, 4 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 12, 10, 4 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 12, 16, 14, 4 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 20, 18, 4 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 20, 24, 22, 4 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 28, 26, 4 }, { 28, 28, 28, 0 }, { 28, 28, 28, 0 }, { 28, 28, 28, 0 }, { 28, 32, 30, 4 }, { 32, 32, 32, 0 }, + { 32, 32, 32, 0 }, { 32, 32, 32, 0 }, { 32, 36, 34, 4 }, { 36, 36, 36, 0 }, { 36, 36, 36, 0 }, { 36, 36, 36, 0 }, { 36, 40, 38, 4 }, { 40, 40, 40, 0 }, + { 40, 40, 40, 0 }, { 40, 40, 40, 0 }, { 40, 44, 42, 4 }, { 44, 44, 44, 0 }, { 44, 44, 44, 0 }, { 44, 44, 44, 0 }, { 44, 48, 46, 4 }, { 48, 48, 48, 0 }, + { 48, 48, 48, 0 }, { 48, 48, 48, 0 }, { 48, 52, 50, 4 }, { 52, 52, 52, 0 }, { 52, 52, 52, 0 }, { 52, 52, 52, 0 }, { 52, 56, 54, 4 }, { 56, 56, 56, 0 }, + { 56, 56, 56, 0 }, { 56, 56, 56, 0 }, { 56, 60, 58, 4 }, { 60, 60, 60, 0 }, { 60, 60, 60, 0 }, { 60, 60, 60, 0 }, { 60, 65, 62, 5 }, { 60, 65, 62, 5 }, + { 60, 69, 64, 9 }, { 65, 65, 65, 0 }, { 60, 73, 66, 13 }, { 65, 69, 67, 4 }, { 60, 77, 68, 17 }, { 69, 69, 69, 0 }, { 60, 81, 70, 21 }, { 69, 73, 71, 4 }, + { 60, 85, 72, 25 }, { 73, 73, 73, 0 }, { 60, 89, 74, 29 }, { 73, 77, 75, 4 }, { 60, 93, 76, 33 }, { 77, 77, 77, 0 }, { 60, 97, 78, 37 }, { 77, 81, 79, 4 }, + { 60, 101, 80, 41 }, { 81, 81, 81, 0 }, { 60, 105, 82, 45 }, { 81, 85, 83, 4 }, { 60, 109, 84, 49 }, { 85, 85, 85, 0 }, { 60, 113, 86, 53 }, { 85, 89, 87, 4 }, + { 60, 117, 88, 57 }, { 89, 89, 89, 0 }, { 60, 121, 90, 61 }, { 89, 93, 91, 4 }, { 60, 125, 92, 65 }, { 93, 93, 93, 0 }, { 93, 93, 93, 0 }, { 93, 97, 95, 4 }, + { 97, 97, 97, 0 }, { 97, 97, 97, 0 }, { 97, 97, 97, 0 }, { 97, 101, 99, 4 }, { 101, 101, 101, 0 }, { 101, 101, 101, 0 }, { 101, 101, 101, 0 }, { 101, 105, 103, 4 }, + { 105, 105, 105, 0 }, { 105, 105, 105, 0 }, { 105, 105, 105, 0 }, { 105, 109, 107, 4 }, { 109, 109, 109, 0 }, { 109, 109, 109, 0 }, { 109, 109, 109, 0 }, { 109, 113, 111, 4 }, + { 113, 113, 113, 0 }, { 113, 113, 113, 0 }, { 113, 113, 113, 0 }, { 113, 117, 115, 4 }, { 117, 117, 117, 0 }, { 117, 117, 117, 0 }, { 117, 117, 117, 0 }, { 117, 121, 119, 4 }, + { 121, 121, 121, 0 }, { 121, 121, 121, 0 }, { 121, 121, 121, 0 }, { 121, 125, 123, 4 }, { 125, 125, 125, 0 }, { 125, 125, 125, 0 }, { 125, 125, 125, 0 }, { 125, 130, 127, 5 }, + { 125, 130, 127, 5 }, { 125, 134, 129, 9 }, { 130, 130, 130, 0 }, { 125, 138, 131, 13 }, { 130, 134, 132, 4 }, { 125, 142, 133, 17 }, { 134, 134, 134, 0 }, { 125, 146, 135, 21 }, + { 134, 138, 136, 4 }, { 125, 150, 137, 25 }, { 138, 138, 138, 0 }, { 125, 154, 139, 29 }, { 138, 142, 140, 4 }, { 125, 158, 141, 33 }, { 142, 142, 142, 0 }, { 125, 162, 143, 37 }, + { 142, 146, 144, 4 }, { 125, 166, 145, 41 }, { 146, 146, 146, 0 }, { 125, 170, 147, 45 }, { 146, 150, 148, 4 }, { 125, 174, 149, 49 }, { 150, 150, 150, 0 }, { 125, 178, 151, 53 }, + { 150, 154, 152, 4 }, { 125, 182, 153, 57 }, { 154, 154, 154, 0 }, { 125, 186, 155, 61 }, { 154, 158, 156, 4 }, { 125, 190, 157, 65 }, { 158, 158, 158, 0 }, { 158, 158, 158, 0 }, + { 158, 162, 160, 4 }, { 162, 162, 162, 0 }, { 162, 162, 162, 0 }, { 162, 162, 162, 0 }, { 162, 166, 164, 4 }, { 166, 166, 166, 0 }, { 166, 166, 166, 0 }, { 166, 166, 166, 0 }, + { 166, 170, 168, 4 }, { 170, 170, 170, 0 }, { 170, 170, 170, 0 }, { 170, 170, 170, 0 }, { 170, 174, 172, 4 }, { 174, 174, 174, 0 }, { 174, 174, 174, 0 }, { 174, 174, 174, 0 }, + { 174, 178, 176, 4 }, { 178, 178, 178, 0 }, { 178, 178, 178, 0 }, { 178, 178, 178, 0 }, { 178, 182, 180, 4 }, { 182, 182, 182, 0 }, { 182, 182, 182, 0 }, { 182, 182, 182, 0 }, + { 182, 186, 184, 4 }, { 186, 186, 186, 0 }, { 186, 186, 186, 0 }, { 186, 186, 186, 0 }, { 186, 190, 188, 4 }, { 190, 190, 190, 0 }, { 190, 190, 190, 0 }, { 190, 190, 190, 0 }, + { 190, 195, 192, 5 }, { 190, 195, 192, 5 }, { 190, 199, 194, 9 }, { 195, 195, 195, 0 }, { 190, 203, 196, 13 }, { 195, 199, 197, 4 }, { 190, 207, 198, 17 }, { 199, 199, 199, 0 }, + { 190, 211, 200, 21 }, { 199, 203, 201, 4 }, { 190, 215, 202, 25 }, { 203, 203, 203, 0 }, { 190, 219, 204, 29 }, { 203, 207, 205, 4 }, { 190, 223, 206, 33 }, { 207, 207, 207, 0 }, + { 190, 227, 208, 37 }, { 207, 211, 209, 4 }, { 190, 231, 210, 41 }, { 211, 211, 211, 0 }, { 190, 235, 212, 45 }, { 211, 215, 213, 4 }, { 190, 239, 214, 49 }, { 215, 215, 215, 0 }, + { 190, 243, 216, 53 }, { 215, 219, 217, 4 }, { 190, 247, 218, 57 }, { 219, 219, 219, 0 }, { 190, 251, 220, 61 }, { 219, 223, 221, 4 }, { 190, 255, 222, 65 }, { 223, 223, 223, 0 }, + { 223, 223, 223, 0 }, { 223, 227, 225, 4 }, { 227, 227, 227, 0 }, { 227, 227, 227, 0 }, { 227, 227, 227, 0 }, { 227, 231, 229, 4 }, { 231, 231, 231, 0 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 231, 235, 233, 4 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 235, 239, 237, 4 }, { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 239, 243, 241, 4 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 243, 247, 245, 4 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 247, 251, 249, 4 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 251, 255, 253, 4 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor5_3_p[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 8, 0, 2, 8 }, { 8, 0, 2, 8 }, { 0, 8, 5, 8 }, { 0, 8, 5, 8 }, { 0, 8, 5, 8 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 16, 8, 10, 8 }, { 33, 0, 11, 33 }, { 8, 16, 13, 8 }, { 8, 16, 13, 8 }, { 8, 16, 13, 8 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 24, 16, 18, 8 }, { 41, 8, 19, 33 }, { 16, 24, 21, 8 }, { 16, 24, 21, 8 }, { 0, 33, 22, 33 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 33, 24, 27, 9 }, { 33, 24, 27, 9 }, { 33, 24, 27, 9 }, { 41, 24, 29, 17 }, { 24, 33, 30, 9 }, { 24, 33, 30, 9 }, + { 16, 41, 32, 25 }, { 33, 33, 33, 0 }, { 33, 33, 33, 0 }, { 41, 33, 35, 8 }, { 41, 33, 35, 8 }, { 33, 41, 38, 8 }, { 33, 41, 38, 8 }, { 33, 41, 38, 8 }, + { 24, 49, 40, 25 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 49, 41, 43, 8 }, { 66, 33, 44, 33 }, { 41, 49, 46, 8 }, { 41, 49, 46, 8 }, { 41, 49, 46, 8 }, + { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 57, 49, 51, 8 }, { 74, 41, 52, 33 }, { 49, 57, 54, 8 }, { 49, 57, 54, 8 }, { 33, 66, 55, 33 }, + { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 66, 57, 60, 9 }, { 66, 57, 60, 9 }, { 66, 57, 60, 9 }, { 74, 57, 62, 17 }, { 57, 66, 63, 9 }, + { 57, 66, 63, 9 }, { 49, 74, 65, 25 }, { 66, 66, 66, 0 }, { 66, 66, 66, 0 }, { 74, 66, 68, 8 }, { 74, 66, 68, 8 }, { 66, 74, 71, 8 }, { 66, 74, 71, 8 }, + { 66, 74, 71, 8 }, { 57, 82, 73, 25 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 82, 74, 76, 8 }, { 99, 66, 77, 33 }, { 74, 82, 79, 8 }, { 74, 82, 79, 8 }, + { 74, 82, 79, 8 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 90, 82, 84, 8 }, { 107, 74, 85, 33 }, { 82, 90, 87, 8 }, { 82, 90, 87, 8 }, + { 66, 99, 88, 33 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 99, 90, 93, 9 }, { 99, 90, 93, 9 }, { 99, 90, 93, 9 }, { 107, 90, 95, 17 }, + { 90, 99, 96, 9 }, { 90, 99, 96, 9 }, { 82, 107, 98, 25 }, { 99, 99, 99, 0 }, { 99, 99, 99, 0 }, { 107, 99, 101, 8 }, { 107, 99, 101, 8 }, { 99, 107, 104, 8 }, + { 99, 107, 104, 8 }, { 99, 107, 104, 8 }, { 90, 115, 106, 25 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 115, 107, 109, 8 }, { 132, 99, 110, 33 }, { 107, 115, 112, 8 }, + { 107, 115, 112, 8 }, { 107, 115, 112, 8 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 123, 115, 117, 8 }, { 140, 107, 118, 33 }, { 115, 123, 120, 8 }, + { 115, 123, 120, 8 }, { 99, 132, 121, 33 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 132, 123, 126, 9 }, { 132, 123, 126, 9 }, { 132, 123, 126, 9 }, + { 140, 123, 128, 17 }, { 123, 132, 129, 9 }, { 123, 132, 129, 9 }, { 115, 140, 131, 25 }, { 132, 132, 132, 0 }, { 132, 132, 132, 0 }, { 140, 132, 134, 8 }, { 140, 132, 134, 8 }, + { 132, 140, 137, 8 }, { 132, 140, 137, 8 }, { 132, 140, 137, 8 }, { 123, 148, 139, 25 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 148, 140, 142, 8 }, { 165, 132, 143, 33 }, + { 140, 148, 145, 8 }, { 140, 148, 145, 8 }, { 140, 148, 145, 8 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 156, 148, 150, 8 }, { 173, 140, 151, 33 }, + { 148, 156, 153, 8 }, { 148, 156, 153, 8 }, { 132, 165, 154, 33 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 165, 156, 159, 9 }, { 165, 156, 159, 9 }, + { 165, 156, 159, 9 }, { 173, 156, 161, 17 }, { 156, 165, 162, 9 }, { 156, 165, 162, 9 }, { 148, 173, 164, 25 }, { 165, 165, 165, 0 }, { 165, 165, 165, 0 }, { 173, 165, 167, 8 }, + { 173, 165, 167, 8 }, { 165, 173, 170, 8 }, { 165, 173, 170, 8 }, { 165, 173, 170, 8 }, { 156, 181, 172, 25 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, { 181, 173, 175, 8 }, + { 198, 165, 176, 33 }, { 173, 181, 178, 8 }, { 173, 181, 178, 8 }, { 173, 181, 178, 8 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 189, 181, 183, 8 }, + { 206, 173, 184, 33 }, { 181, 189, 186, 8 }, { 181, 189, 186, 8 }, { 165, 198, 187, 33 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 198, 189, 192, 9 }, + { 198, 189, 192, 9 }, { 198, 189, 192, 9 }, { 206, 189, 194, 17 }, { 189, 198, 195, 9 }, { 189, 198, 195, 9 }, { 181, 206, 197, 25 }, { 198, 198, 198, 0 }, { 198, 198, 198, 0 }, + { 206, 198, 200, 8 }, { 206, 198, 200, 8 }, { 198, 206, 203, 8 }, { 198, 206, 203, 8 }, { 198, 206, 203, 8 }, { 189, 214, 205, 25 }, { 206, 206, 206, 0 }, { 206, 206, 206, 0 }, + { 214, 206, 208, 8 }, { 231, 198, 209, 33 }, { 206, 214, 211, 8 }, { 206, 214, 211, 8 }, { 206, 214, 211, 8 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, + { 222, 214, 216, 8 }, { 239, 206, 217, 33 }, { 214, 222, 219, 8 }, { 214, 222, 219, 8 }, { 198, 231, 220, 33 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, + { 231, 222, 225, 9 }, { 231, 222, 225, 9 }, { 231, 222, 225, 9 }, { 239, 222, 227, 17 }, { 222, 231, 228, 9 }, { 222, 231, 228, 9 }, { 214, 239, 230, 25 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 239, 231, 233, 8 }, { 239, 231, 233, 8 }, { 231, 239, 236, 8 }, { 231, 239, 236, 8 }, { 231, 239, 236, 8 }, { 222, 247, 238, 25 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 247, 239, 241, 8 }, { 247, 239, 241, 8 }, { 239, 247, 244, 8 }, { 239, 247, 244, 8 }, { 239, 247, 244, 8 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 255, 247, 249, 8 }, { 255, 247, 249, 8 }, { 247, 255, 252, 8 }, { 247, 255, 252, 8 }, { 247, 255, 252, 8 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor6_3_p[256] = + { + { 0, 0, 0, 0 }, { 4, 0, 1, 4 }, { 0, 4, 2, 4 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 8, 4, 5, 4 }, { 4, 8, 6, 4 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 12, 8, 9, 4 }, { 8, 12, 10, 4 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 16, 12, 13, 4 }, { 12, 16, 14, 4 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 20, 16, 17, 4 }, { 16, 20, 18, 4 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 24, 20, 21, 4 }, { 20, 24, 22, 4 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 28, 24, 25, 4 }, { 24, 28, 26, 4 }, { 28, 28, 28, 0 }, { 28, 28, 28, 0 }, { 32, 28, 29, 4 }, { 28, 32, 30, 4 }, { 32, 32, 32, 0 }, + { 32, 32, 32, 0 }, { 36, 32, 33, 4 }, { 32, 36, 34, 4 }, { 36, 36, 36, 0 }, { 36, 36, 36, 0 }, { 40, 36, 37, 4 }, { 36, 40, 38, 4 }, { 40, 40, 40, 0 }, + { 40, 40, 40, 0 }, { 44, 40, 41, 4 }, { 40, 44, 42, 4 }, { 65, 32, 43, 33 }, { 44, 44, 44, 0 }, { 48, 44, 45, 4 }, { 44, 48, 46, 4 }, { 69, 36, 47, 33 }, + { 48, 48, 48, 0 }, { 52, 48, 49, 4 }, { 48, 52, 50, 4 }, { 65, 44, 51, 21 }, { 52, 52, 52, 0 }, { 56, 52, 53, 4 }, { 52, 56, 54, 4 }, { 69, 48, 55, 21 }, + { 56, 56, 56, 0 }, { 60, 56, 57, 4 }, { 56, 60, 58, 4 }, { 65, 56, 59, 9 }, { 60, 60, 60, 0 }, { 65, 60, 61, 5 }, { 56, 65, 62, 9 }, { 60, 65, 63, 5 }, + { 56, 69, 64, 13 }, { 65, 65, 65, 0 }, { 69, 65, 66, 4 }, { 65, 69, 67, 4 }, { 60, 73, 68, 13 }, { 69, 69, 69, 0 }, { 73, 69, 70, 4 }, { 69, 73, 71, 4 }, + { 56, 81, 72, 25 }, { 73, 73, 73, 0 }, { 77, 73, 74, 4 }, { 73, 77, 75, 4 }, { 60, 85, 76, 25 }, { 77, 77, 77, 0 }, { 81, 77, 78, 4 }, { 77, 81, 79, 4 }, + { 81, 81, 81, 0 }, { 81, 81, 81, 0 }, { 85, 81, 82, 4 }, { 81, 85, 83, 4 }, { 85, 85, 85, 0 }, { 85, 85, 85, 0 }, { 89, 85, 86, 4 }, { 85, 89, 87, 4 }, + { 89, 89, 89, 0 }, { 89, 89, 89, 0 }, { 93, 89, 90, 4 }, { 89, 93, 91, 4 }, { 93, 93, 93, 0 }, { 93, 93, 93, 0 }, { 97, 93, 94, 4 }, { 93, 97, 95, 4 }, + { 97, 97, 97, 0 }, { 97, 97, 97, 0 }, { 101, 97, 98, 4 }, { 97, 101, 99, 4 }, { 101, 101, 101, 0 }, { 101, 101, 101, 0 }, { 105, 101, 102, 4 }, { 101, 105, 103, 4 }, + { 105, 105, 105, 0 }, { 105, 105, 105, 0 }, { 109, 105, 106, 4 }, { 105, 109, 107, 4 }, { 130, 97, 108, 33 }, { 109, 109, 109, 0 }, { 113, 109, 110, 4 }, { 109, 113, 111, 4 }, + { 134, 101, 112, 33 }, { 113, 113, 113, 0 }, { 117, 113, 114, 4 }, { 113, 117, 115, 4 }, { 130, 109, 116, 21 }, { 117, 117, 117, 0 }, { 121, 117, 118, 4 }, { 117, 121, 119, 4 }, + { 134, 113, 120, 21 }, { 121, 121, 121, 0 }, { 125, 121, 122, 4 }, { 121, 125, 123, 4 }, { 130, 121, 124, 9 }, { 125, 125, 125, 0 }, { 130, 125, 126, 5 }, { 121, 130, 127, 9 }, + { 125, 130, 128, 5 }, { 121, 134, 129, 13 }, { 130, 130, 130, 0 }, { 134, 130, 131, 4 }, { 130, 134, 132, 4 }, { 125, 138, 133, 13 }, { 134, 134, 134, 0 }, { 138, 134, 135, 4 }, + { 134, 138, 136, 4 }, { 121, 146, 137, 25 }, { 138, 138, 138, 0 }, { 142, 138, 139, 4 }, { 138, 142, 140, 4 }, { 125, 150, 141, 25 }, { 142, 142, 142, 0 }, { 146, 142, 143, 4 }, + { 142, 146, 144, 4 }, { 146, 146, 146, 0 }, { 146, 146, 146, 0 }, { 150, 146, 147, 4 }, { 146, 150, 148, 4 }, { 150, 150, 150, 0 }, { 150, 150, 150, 0 }, { 154, 150, 151, 4 }, + { 150, 154, 152, 4 }, { 154, 154, 154, 0 }, { 154, 154, 154, 0 }, { 158, 154, 155, 4 }, { 154, 158, 156, 4 }, { 158, 158, 158, 0 }, { 158, 158, 158, 0 }, { 162, 158, 159, 4 }, + { 158, 162, 160, 4 }, { 162, 162, 162, 0 }, { 162, 162, 162, 0 }, { 166, 162, 163, 4 }, { 162, 166, 164, 4 }, { 166, 166, 166, 0 }, { 166, 166, 166, 0 }, { 170, 166, 167, 4 }, + { 166, 170, 168, 4 }, { 170, 170, 170, 0 }, { 170, 170, 170, 0 }, { 174, 170, 171, 4 }, { 170, 174, 172, 4 }, { 195, 162, 173, 33 }, { 174, 174, 174, 0 }, { 178, 174, 175, 4 }, + { 174, 178, 176, 4 }, { 199, 166, 177, 33 }, { 178, 178, 178, 0 }, { 182, 178, 179, 4 }, { 178, 182, 180, 4 }, { 195, 174, 181, 21 }, { 182, 182, 182, 0 }, { 186, 182, 183, 4 }, + { 182, 186, 184, 4 }, { 199, 178, 185, 21 }, { 186, 186, 186, 0 }, { 190, 186, 187, 4 }, { 186, 190, 188, 4 }, { 195, 186, 189, 9 }, { 190, 190, 190, 0 }, { 195, 190, 191, 5 }, + { 186, 195, 192, 9 }, { 190, 195, 193, 5 }, { 186, 199, 194, 13 }, { 195, 195, 195, 0 }, { 199, 195, 196, 4 }, { 195, 199, 197, 4 }, { 190, 203, 198, 13 }, { 199, 199, 199, 0 }, + { 203, 199, 200, 4 }, { 199, 203, 201, 4 }, { 186, 211, 202, 25 }, { 203, 203, 203, 0 }, { 207, 203, 204, 4 }, { 203, 207, 205, 4 }, { 190, 215, 206, 25 }, { 207, 207, 207, 0 }, + { 211, 207, 208, 4 }, { 207, 211, 209, 4 }, { 211, 211, 211, 0 }, { 211, 211, 211, 0 }, { 215, 211, 212, 4 }, { 211, 215, 213, 4 }, { 215, 215, 215, 0 }, { 215, 215, 215, 0 }, + { 219, 215, 216, 4 }, { 215, 219, 217, 4 }, { 219, 219, 219, 0 }, { 219, 219, 219, 0 }, { 223, 219, 220, 4 }, { 219, 223, 221, 4 }, { 223, 223, 223, 0 }, { 223, 223, 223, 0 }, + { 227, 223, 224, 4 }, { 223, 227, 225, 4 }, { 227, 227, 227, 0 }, { 227, 227, 227, 0 }, { 231, 227, 228, 4 }, { 227, 231, 229, 4 }, { 231, 231, 231, 0 }, { 231, 231, 231, 0 }, + { 235, 231, 232, 4 }, { 231, 235, 233, 4 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 239, 235, 236, 4 }, { 235, 239, 237, 4 }, { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, + { 243, 239, 240, 4 }, { 239, 243, 241, 4 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 247, 243, 244, 4 }, { 243, 247, 245, 4 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 251, 247, 248, 4 }, { 247, 251, 249, 4 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 255, 251, 252, 4 }, { 251, 255, 253, 4 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor5_2_p[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 8, 4, 8 }, { 0, 8, 4, 8 }, { 0, 8, 4, 8 }, { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 16, 12, 8 }, { 8, 16, 12, 8 }, { 8, 16, 12, 8 }, { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 24, 20, 8 }, { 16, 24, 20, 8 }, { 16, 24, 20, 8 }, { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 33, 28, 9 }, { 24, 41, 32, 17 }, + { 24, 41, 32, 17 }, { 33, 33, 33, 0 }, { 33, 33, 33, 0 }, { 24, 49, 36, 25 }, { 24, 49, 36, 25 }, { 33, 41, 37, 8 }, { 33, 41, 37, 8 }, { 24, 57, 40, 33 }, + { 24, 57, 40, 33 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 41, 41, 41, 0 }, { 41, 49, 45, 8 }, { 41, 49, 45, 8 }, { 41, 49, 45, 8 }, { 49, 49, 49, 0 }, + { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 49, 49, 0 }, { 49, 57, 53, 8 }, { 49, 57, 53, 8 }, { 49, 57, 53, 8 }, { 57, 57, 57, 0 }, + { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 57, 57, 0 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, { 57, 66, 61, 9 }, + { 57, 74, 65, 17 }, { 57, 74, 65, 17 }, { 66, 66, 66, 0 }, { 66, 66, 66, 0 }, { 57, 82, 69, 25 }, { 57, 82, 69, 25 }, { 66, 74, 70, 8 }, { 66, 74, 70, 8 }, + { 57, 90, 73, 33 }, { 57, 90, 73, 33 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 74, 74, 74, 0 }, { 74, 82, 78, 8 }, { 74, 82, 78, 8 }, { 74, 82, 78, 8 }, + { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 82, 82, 0 }, { 82, 90, 86, 8 }, { 82, 90, 86, 8 }, { 82, 90, 86, 8 }, + { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 90, 90, 0 }, { 90, 99, 94, 9 }, { 90, 99, 94, 9 }, { 90, 99, 94, 9 }, + { 90, 99, 94, 9 }, { 90, 107, 98, 17 }, { 90, 107, 98, 17 }, { 99, 99, 99, 0 }, { 99, 99, 99, 0 }, { 90, 115, 102, 25 }, { 90, 115, 102, 25 }, { 99, 107, 103, 8 }, + { 99, 107, 103, 8 }, { 90, 123, 106, 33 }, { 90, 123, 106, 33 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 107, 107, 107, 0 }, { 107, 115, 111, 8 }, { 107, 115, 111, 8 }, + { 107, 115, 111, 8 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 115, 115, 0 }, { 115, 123, 119, 8 }, { 115, 123, 119, 8 }, + { 115, 123, 119, 8 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 123, 123, 0 }, { 123, 132, 127, 9 }, { 123, 132, 127, 9 }, + { 123, 132, 127, 9 }, { 123, 132, 127, 9 }, { 123, 140, 131, 17 }, { 123, 140, 131, 17 }, { 132, 132, 132, 0 }, { 132, 132, 132, 0 }, { 123, 148, 135, 25 }, { 123, 148, 135, 25 }, + { 132, 140, 136, 8 }, { 132, 140, 136, 8 }, { 123, 156, 139, 33 }, { 123, 156, 139, 33 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 140, 140, 140, 0 }, { 140, 148, 144, 8 }, + { 140, 148, 144, 8 }, { 140, 148, 144, 8 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 148, 148, 0 }, { 148, 156, 152, 8 }, + { 148, 156, 152, 8 }, { 148, 156, 152, 8 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 156, 156, 0 }, { 156, 165, 160, 9 }, + { 156, 165, 160, 9 }, { 156, 165, 160, 9 }, { 156, 165, 160, 9 }, { 156, 173, 164, 17 }, { 156, 173, 164, 17 }, { 165, 165, 165, 0 }, { 165, 165, 165, 0 }, { 156, 181, 168, 25 }, + { 156, 181, 168, 25 }, { 165, 173, 169, 8 }, { 165, 173, 169, 8 }, { 156, 189, 172, 33 }, { 156, 189, 172, 33 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, { 173, 173, 173, 0 }, + { 173, 181, 177, 8 }, { 173, 181, 177, 8 }, { 173, 181, 177, 8 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, { 181, 181, 181, 0 }, + { 181, 189, 185, 8 }, { 181, 189, 185, 8 }, { 181, 189, 185, 8 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, { 189, 189, 189, 0 }, + { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 198, 193, 9 }, { 189, 206, 197, 17 }, { 189, 206, 197, 17 }, { 198, 198, 198, 0 }, { 198, 198, 198, 0 }, + { 189, 214, 201, 25 }, { 189, 214, 201, 25 }, { 198, 206, 202, 8 }, { 198, 206, 202, 8 }, { 189, 222, 205, 33 }, { 189, 222, 205, 33 }, { 206, 206, 206, 0 }, { 206, 206, 206, 0 }, + { 206, 206, 206, 0 }, { 206, 214, 210, 8 }, { 206, 214, 210, 8 }, { 206, 214, 210, 8 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, { 214, 214, 214, 0 }, + { 214, 214, 214, 0 }, { 214, 222, 218, 8 }, { 214, 222, 218, 8 }, { 214, 222, 218, 8 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, { 222, 222, 222, 0 }, + { 222, 222, 222, 0 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 231, 226, 9 }, { 222, 239, 230, 17 }, { 222, 239, 230, 17 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 222, 247, 234, 25 }, { 222, 247, 234, 25 }, { 231, 239, 235, 8 }, { 231, 239, 235, 8 }, { 222, 255, 238, 33 }, { 222, 255, 238, 33 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, { 239, 247, 243, 8 }, { 239, 247, 243, 8 }, { 239, 247, 243, 8 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, { 247, 255, 251, 8 }, { 247, 255, 251, 8 }, { 247, 255, 251, 8 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + + SingleColorTableEntry g_singleColor6_2_p[256] = + { + { 0, 0, 0, 0 }, { 0, 0, 0, 0 }, { 0, 4, 2, 4 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 4, 4, 4, 0 }, { 4, 8, 6, 4 }, { 8, 8, 8, 0 }, + { 8, 8, 8, 0 }, { 8, 8, 8, 0 }, { 8, 12, 10, 4 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 12, 12, 12, 0 }, { 12, 16, 14, 4 }, { 16, 16, 16, 0 }, + { 16, 16, 16, 0 }, { 16, 16, 16, 0 }, { 16, 20, 18, 4 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 20, 20, 20, 0 }, { 20, 24, 22, 4 }, { 24, 24, 24, 0 }, + { 24, 24, 24, 0 }, { 24, 24, 24, 0 }, { 24, 28, 26, 4 }, { 28, 28, 28, 0 }, { 28, 28, 28, 0 }, { 28, 28, 28, 0 }, { 28, 32, 30, 4 }, { 32, 32, 32, 0 }, + { 32, 32, 32, 0 }, { 32, 32, 32, 0 }, { 32, 36, 34, 4 }, { 36, 36, 36, 0 }, { 36, 36, 36, 0 }, { 36, 36, 36, 0 }, { 36, 40, 38, 4 }, { 40, 40, 40, 0 }, + { 40, 40, 40, 0 }, { 40, 40, 40, 0 }, { 40, 44, 42, 4 }, { 44, 44, 44, 0 }, { 44, 44, 44, 0 }, { 44, 44, 44, 0 }, { 44, 48, 46, 4 }, { 48, 48, 48, 0 }, + { 48, 48, 48, 0 }, { 48, 48, 48, 0 }, { 48, 52, 50, 4 }, { 52, 52, 52, 0 }, { 52, 52, 52, 0 }, { 52, 52, 52, 0 }, { 52, 56, 54, 4 }, { 56, 56, 56, 0 }, + { 56, 56, 56, 0 }, { 56, 56, 56, 0 }, { 56, 60, 58, 4 }, { 60, 60, 60, 0 }, { 60, 60, 60, 0 }, { 60, 60, 60, 0 }, { 60, 65, 62, 5 }, { 60, 65, 62, 5 }, + { 60, 69, 64, 9 }, { 65, 65, 65, 0 }, { 60, 73, 66, 13 }, { 65, 69, 67, 4 }, { 60, 77, 68, 17 }, { 69, 69, 69, 0 }, { 60, 81, 70, 21 }, { 69, 73, 71, 4 }, + { 60, 85, 72, 25 }, { 73, 73, 73, 0 }, { 60, 89, 74, 29 }, { 73, 77, 75, 4 }, { 60, 93, 76, 33 }, { 77, 77, 77, 0 }, { 77, 77, 77, 0 }, { 77, 81, 79, 4 }, + { 81, 81, 81, 0 }, { 81, 81, 81, 0 }, { 81, 81, 81, 0 }, { 81, 85, 83, 4 }, { 85, 85, 85, 0 }, { 85, 85, 85, 0 }, { 85, 85, 85, 0 }, { 85, 89, 87, 4 }, + { 89, 89, 89, 0 }, { 89, 89, 89, 0 }, { 89, 89, 89, 0 }, { 89, 93, 91, 4 }, { 93, 93, 93, 0 }, { 93, 93, 93, 0 }, { 93, 93, 93, 0 }, { 93, 97, 95, 4 }, + { 97, 97, 97, 0 }, { 97, 97, 97, 0 }, { 97, 97, 97, 0 }, { 97, 101, 99, 4 }, { 101, 101, 101, 0 }, { 101, 101, 101, 0 }, { 101, 101, 101, 0 }, { 101, 105, 103, 4 }, + { 105, 105, 105, 0 }, { 105, 105, 105, 0 }, { 105, 105, 105, 0 }, { 105, 109, 107, 4 }, { 109, 109, 109, 0 }, { 109, 109, 109, 0 }, { 109, 109, 109, 0 }, { 109, 113, 111, 4 }, + { 113, 113, 113, 0 }, { 113, 113, 113, 0 }, { 113, 113, 113, 0 }, { 113, 117, 115, 4 }, { 117, 117, 117, 0 }, { 117, 117, 117, 0 }, { 117, 117, 117, 0 }, { 117, 121, 119, 4 }, + { 121, 121, 121, 0 }, { 121, 121, 121, 0 }, { 121, 121, 121, 0 }, { 121, 125, 123, 4 }, { 125, 125, 125, 0 }, { 125, 125, 125, 0 }, { 125, 125, 125, 0 }, { 125, 130, 127, 5 }, + { 125, 130, 127, 5 }, { 125, 134, 129, 9 }, { 130, 130, 130, 0 }, { 125, 138, 131, 13 }, { 130, 134, 132, 4 }, { 125, 142, 133, 17 }, { 134, 134, 134, 0 }, { 125, 146, 135, 21 }, + { 134, 138, 136, 4 }, { 125, 150, 137, 25 }, { 138, 138, 138, 0 }, { 125, 154, 139, 29 }, { 138, 142, 140, 4 }, { 125, 158, 141, 33 }, { 142, 142, 142, 0 }, { 142, 142, 142, 0 }, + { 142, 146, 144, 4 }, { 146, 146, 146, 0 }, { 146, 146, 146, 0 }, { 146, 146, 146, 0 }, { 146, 150, 148, 4 }, { 150, 150, 150, 0 }, { 150, 150, 150, 0 }, { 150, 150, 150, 0 }, + { 150, 154, 152, 4 }, { 154, 154, 154, 0 }, { 154, 154, 154, 0 }, { 154, 154, 154, 0 }, { 154, 158, 156, 4 }, { 158, 158, 158, 0 }, { 158, 158, 158, 0 }, { 158, 158, 158, 0 }, + { 158, 162, 160, 4 }, { 162, 162, 162, 0 }, { 162, 162, 162, 0 }, { 162, 162, 162, 0 }, { 162, 166, 164, 4 }, { 166, 166, 166, 0 }, { 166, 166, 166, 0 }, { 166, 166, 166, 0 }, + { 166, 170, 168, 4 }, { 170, 170, 170, 0 }, { 170, 170, 170, 0 }, { 170, 170, 170, 0 }, { 170, 174, 172, 4 }, { 174, 174, 174, 0 }, { 174, 174, 174, 0 }, { 174, 174, 174, 0 }, + { 174, 178, 176, 4 }, { 178, 178, 178, 0 }, { 178, 178, 178, 0 }, { 178, 178, 178, 0 }, { 178, 182, 180, 4 }, { 182, 182, 182, 0 }, { 182, 182, 182, 0 }, { 182, 182, 182, 0 }, + { 182, 186, 184, 4 }, { 186, 186, 186, 0 }, { 186, 186, 186, 0 }, { 186, 186, 186, 0 }, { 186, 190, 188, 4 }, { 190, 190, 190, 0 }, { 190, 190, 190, 0 }, { 190, 190, 190, 0 }, + { 190, 195, 192, 5 }, { 190, 195, 192, 5 }, { 190, 199, 194, 9 }, { 195, 195, 195, 0 }, { 190, 203, 196, 13 }, { 195, 199, 197, 4 }, { 190, 207, 198, 17 }, { 199, 199, 199, 0 }, + { 190, 211, 200, 21 }, { 199, 203, 201, 4 }, { 190, 215, 202, 25 }, { 203, 203, 203, 0 }, { 190, 219, 204, 29 }, { 203, 207, 205, 4 }, { 190, 223, 206, 33 }, { 207, 207, 207, 0 }, + { 207, 207, 207, 0 }, { 207, 211, 209, 4 }, { 211, 211, 211, 0 }, { 211, 211, 211, 0 }, { 211, 211, 211, 0 }, { 211, 215, 213, 4 }, { 215, 215, 215, 0 }, { 215, 215, 215, 0 }, + { 215, 215, 215, 0 }, { 215, 219, 217, 4 }, { 219, 219, 219, 0 }, { 219, 219, 219, 0 }, { 219, 219, 219, 0 }, { 219, 223, 221, 4 }, { 223, 223, 223, 0 }, { 223, 223, 223, 0 }, + { 223, 223, 223, 0 }, { 223, 227, 225, 4 }, { 227, 227, 227, 0 }, { 227, 227, 227, 0 }, { 227, 227, 227, 0 }, { 227, 231, 229, 4 }, { 231, 231, 231, 0 }, { 231, 231, 231, 0 }, + { 231, 231, 231, 0 }, { 231, 235, 233, 4 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 235, 235, 235, 0 }, { 235, 239, 237, 4 }, { 239, 239, 239, 0 }, { 239, 239, 239, 0 }, + { 239, 239, 239, 0 }, { 239, 243, 241, 4 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 243, 243, 243, 0 }, { 243, 247, 245, 4 }, { 247, 247, 247, 0 }, { 247, 247, 247, 0 }, + { 247, 247, 247, 0 }, { 247, 251, 249, 4 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 251, 251, 251, 0 }, { 251, 255, 253, 4 }, { 255, 255, 255, 0 }, { 255, 255, 255, 0 }, + }; + } + + class S3TCComputer + { + public: + typedef ParallelMath::Float MFloat; + typedef ParallelMath::SInt16 MSInt16; + typedef ParallelMath::UInt15 MUInt15; + typedef ParallelMath::UInt16 MUInt16; + typedef ParallelMath::SInt32 MSInt32; + + static void Init(MFloat& error) + { + error = ParallelMath::MakeFloat(FLT_MAX); + } + + static void QuantizeTo6Bits(MUInt15& v) + { + MUInt15 reduced = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(v, ParallelMath::MakeUInt15(253)) + ParallelMath::MakeUInt16(512), 10)); + v = (reduced << 2) | ParallelMath::RightShift(reduced, 4); + } + + static void QuantizeTo5Bits(MUInt15& v) + { + MUInt15 reduced = ParallelMath::LosslessCast<MUInt15>::Cast(ParallelMath::RightShift(ParallelMath::CompactMultiply(v, ParallelMath::MakeUInt15(249)) + ParallelMath::MakeUInt16(1024), 11)); + v = (reduced << 3) | ParallelMath::RightShift(reduced, 2); + } + + static void QuantizeTo565(MUInt15 endPoint[3]) + { + QuantizeTo5Bits(endPoint[0]); + QuantizeTo6Bits(endPoint[1]); + QuantizeTo5Bits(endPoint[2]); + } + + static MFloat ParanoidFactorForSpan(const MSInt16& span) + { + return ParallelMath::Abs(ParallelMath::ToFloat(span)) * 0.03f; + } + + static MFloat ParanoidDiff(const MUInt15& a, const MUInt15& b, const MFloat& d) + { + MFloat absDiff = ParallelMath::Abs(ParallelMath::ToFloat(ParallelMath::LosslessCast<MSInt16>::Cast(a) - ParallelMath::LosslessCast<MSInt16>::Cast(b))); + absDiff = absDiff + d; + return absDiff * absDiff; + } + + static void TestSingleColor(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], int range, const float* channelWeights, + MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange, const ParallelMath::RoundTowardNearestForScope *rtn) + { + float channelWeightsSq[3]; + + for (int ch = 0; ch < 3; ch++) + channelWeightsSq[ch] = channelWeights[ch] * channelWeights[ch]; + + MUInt15 totals[3] = { ParallelMath::MakeUInt15(0), ParallelMath::MakeUInt15(0), ParallelMath::MakeUInt15(0) }; + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 3; ch++) + totals[ch] = totals[ch] + pixels[px][ch]; + } + + MUInt15 average[3]; + for (int ch = 0; ch < 3; ch++) + average[ch] = ParallelMath::RightShift(totals[ch] + ParallelMath::MakeUInt15(8), 4); + + const S3TCSingleColorTables::SingleColorTableEntry* rbTable = NULL; + const S3TCSingleColorTables::SingleColorTableEntry* gTable = NULL; + if (flags & cvtt::Flags::S3TC_Paranoid) + { + if (range == 4) + { + rbTable = S3TCSingleColorTables::g_singleColor5_3_p; + gTable = S3TCSingleColorTables::g_singleColor6_3_p; + } + else + { + assert(range == 3); + rbTable = S3TCSingleColorTables::g_singleColor5_2_p; + gTable = S3TCSingleColorTables::g_singleColor6_2_p; + } + } + else + { + if (range == 4) + { + rbTable = S3TCSingleColorTables::g_singleColor5_3; + gTable = S3TCSingleColorTables::g_singleColor6_3; + } + else + { + assert(range == 3); + rbTable = S3TCSingleColorTables::g_singleColor5_2; + gTable = S3TCSingleColorTables::g_singleColor6_2; + } + } + + MUInt15 interpolated[3]; + MUInt15 eps[2][3]; + MSInt16 spans[3]; + for (int i = 0; i < ParallelMath::ParallelSize; i++) + { + for (int ch = 0; ch < 3; ch++) + { + uint16_t avg = ParallelMath::Extract(average[ch], i); + const S3TCSingleColorTables::SingleColorTableEntry& tableEntry = ((ch == 1) ? gTable[avg] : rbTable[avg]); + ParallelMath::PutUInt15(eps[0][ch], i, tableEntry.m_min); + ParallelMath::PutUInt15(eps[1][ch], i, tableEntry.m_max); + ParallelMath::PutUInt15(interpolated[ch], i, tableEntry.m_actualColor); + ParallelMath::PutSInt16(spans[ch], i, tableEntry.m_span); + } + } + + MFloat error = ParallelMath::MakeFloatZero(); + if (flags & cvtt::Flags::S3TC_Paranoid) + { + MFloat spanParanoidFactors[3]; + for (int ch = 0; ch < 3; ch++) + spanParanoidFactors[ch] = ParanoidFactorForSpan(spans[ch]); + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 3; ch++) + error = error + ParanoidDiff(interpolated[ch], pixels[px][ch], spanParanoidFactors[ch]) * channelWeightsSq[ch]; + } + } + else + { + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 3; ch++) + error = error + ParallelMath::ToFloat(ParallelMath::SqDiffUInt8(interpolated[ch], pixels[px][ch])) * channelWeightsSq[ch]; + } + } + + ParallelMath::FloatCompFlag better = ParallelMath::Less(error, bestError); + ParallelMath::Int16CompFlag better16 = ParallelMath::FloatFlagToInt16(better); + + if (ParallelMath::AnySet(better16)) + { + bestError = ParallelMath::Min(bestError, error); + for (int epi = 0; epi < 2; epi++) + for (int ch = 0; ch < 3; ch++) + ParallelMath::ConditionalSet(bestEndpoints[epi][ch], better16, eps[epi][ch]); + + MUInt15 vindexes = ParallelMath::MakeUInt15(1); + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestIndexes[px], better16, vindexes); + + ParallelMath::ConditionalSet(bestRange, better16, ParallelMath::MakeUInt15(range)); + } + } + + static void TestEndpoints(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const MFloat preWeightedPixels[16][4], const MUInt15 unquantizedEndPoints[2][3], int range, const float* channelWeights, + MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange, EndpointRefiner<3> *refiner, const ParallelMath::RoundTowardNearestForScope *rtn) + { + float channelWeightsSq[3]; + + for (int ch = 0; ch < 3; ch++) + channelWeightsSq[ch] = channelWeights[ch] * channelWeights[ch]; + + MUInt15 endPoints[2][3]; + + for (int ep = 0; ep < 2; ep++) + for (int ch = 0; ch < 3; ch++) + endPoints[ep][ch] = unquantizedEndPoints[ep][ch]; + + QuantizeTo565(endPoints[0]); + QuantizeTo565(endPoints[1]); + + IndexSelector<3> selector; + selector.Init<false>(channelWeights, endPoints, range); + + MUInt15 indexes[16]; + + MFloat paranoidFactors[3]; + for (int ch = 0; ch < 3; ch++) + paranoidFactors[ch] = ParanoidFactorForSpan(ParallelMath::LosslessCast<MSInt16>::Cast(endPoints[0][ch]) - ParallelMath::LosslessCast<MSInt16>::Cast(endPoints[1][ch])); + + MFloat error = ParallelMath::MakeFloatZero(); + AggregatedError<3> aggError; + for (int px = 0; px < 16; px++) + { + MUInt15 index = selector.SelectIndexLDR(floatPixels[px], rtn); + indexes[px] = index; + + if (refiner) + refiner->ContributeUnweightedPW(preWeightedPixels[px], index); + + MUInt15 reconstructed[3]; + selector.ReconstructLDRPrecise(index, reconstructed); + + if (flags & Flags::S3TC_Paranoid) + { + for (int ch = 0; ch < 3; ch++) + error = error + ParanoidDiff(reconstructed[ch], pixels[px][ch], paranoidFactors[ch]) * channelWeightsSq[ch]; + } + else + BCCommon::ComputeErrorLDR<3>(flags, reconstructed, pixels[px], aggError); + } + + if (!(flags & Flags::S3TC_Paranoid)) + error = aggError.Finalize(flags, channelWeightsSq); + + ParallelMath::FloatCompFlag better = ParallelMath::Less(error, bestError); + + if (ParallelMath::AnySet(better)) + { + ParallelMath::Int16CompFlag betterInt16 = ParallelMath::FloatFlagToInt16(better); + + ParallelMath::ConditionalSet(bestError, better, error); + + for (int ep = 0; ep < 2; ep++) + for (int ch = 0; ch < 3; ch++) + ParallelMath::ConditionalSet(bestEndpoints[ep][ch], betterInt16, endPoints[ep][ch]); + + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestIndexes[px], betterInt16, indexes[px]); + + ParallelMath::ConditionalSet(bestRange, betterInt16, ParallelMath::MakeUInt15(static_cast<uint16_t>(range))); + } + } + + static void TestCounts(uint32_t flags, const int *counts, int nCounts, const MUInt15 &numElements, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const MFloat preWeightedPixels[16][4], bool alphaTest, + const MFloat floatSortedInputs[16][4], const MFloat preWeightedFloatSortedInputs[16][4], const float *channelWeights, MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange, + const ParallelMath::RoundTowardNearestForScope* rtn) + { + UNREFERENCED_PARAMETER(alphaTest); + UNREFERENCED_PARAMETER(flags); + + EndpointRefiner<3> refiner; + + refiner.Init(nCounts, channelWeights); + + bool escape = false; + int e = 0; + for (int i = 0; i < nCounts; i++) + { + for (int n = 0; n < counts[i]; n++) + { + ParallelMath::Int16CompFlag valid = ParallelMath::Less(ParallelMath::MakeUInt15(static_cast<uint16_t>(n)), numElements); + if (!ParallelMath::AnySet(valid)) + { + escape = true; + break; + } + + if (ParallelMath::AllSet(valid)) + refiner.ContributeUnweightedPW(preWeightedFloatSortedInputs[e++], ParallelMath::MakeUInt15(static_cast<uint16_t>(i))); + else + { + MFloat weight = ParallelMath::Select(ParallelMath::Int16FlagToFloat(valid), ParallelMath::MakeFloat(1.0f), ParallelMath::MakeFloat(0.0f)); + refiner.ContributePW(preWeightedFloatSortedInputs[e++], ParallelMath::MakeUInt15(static_cast<uint16_t>(i)), weight); + } + } + + if (escape) + break; + } + + MUInt15 endPoints[2][3]; + refiner.GetRefinedEndpointsLDR(endPoints, rtn); + + TestEndpoints(flags, pixels, floatPixels, preWeightedPixels, endPoints, nCounts, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, NULL, rtn); + } + + static void PackExplicitAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride) + { + UNREFERENCED_PARAMETER(flags); + ParallelMath::RoundTowardNearestForScope rtn; + + float weights[1] = { 1.0f }; + + MUInt15 pixels[16]; + MFloat floatPixels[16]; + + for (int px = 0; px < 16; px++) + { + ParallelMath::ConvertLDRInputs(inputs, px, inputChannel, pixels[px]); + floatPixels[px] = ParallelMath::ToFloat(pixels[px]); + } + + MUInt15 ep[2][1] = { { ParallelMath::MakeUInt15(0) },{ ParallelMath::MakeUInt15(255) } }; + + IndexSelector<1> selector; + selector.Init<false>(weights, ep, 16); + + MUInt15 indexes[16]; + + for (int px = 0; px < 16; px++) + indexes[px] = selector.SelectIndexLDR(&floatPixels[px], &rtn); + + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + for (int px = 0; px < 16; px += 8) + { + int index0 = ParallelMath::Extract(indexes[px], block); + int index1 = ParallelMath::Extract(indexes[px], block); + + packedBlocks[px / 2] = static_cast<uint8_t>(index0 | (index1 << 4)); + } + + packedBlocks += packedBlockStride; + } + } + + static void PackInterpolatedAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride, bool isSigned, int maxTweakRounds, int numRefineRounds) + { + if (maxTweakRounds < 1) + maxTweakRounds = 1; + + if (numRefineRounds < 1) + numRefineRounds = 1; + + ParallelMath::RoundTowardNearestForScope rtn; + + float oneWeight[1] = { 1.0f }; + + MUInt15 pixels[16]; + MFloat floatPixels[16]; + + MUInt15 highTerminal = isSigned ? ParallelMath::MakeUInt15(254) : ParallelMath::MakeUInt15(255); + MUInt15 highTerminalMinusOne = highTerminal - ParallelMath::MakeUInt15(1); + + for (int px = 0; px < 16; px++) + { + ParallelMath::ConvertLDRInputs(inputs, px, inputChannel, pixels[px]); + + if (isSigned) + pixels[px] = ParallelMath::Min(pixels[px], highTerminal); + + floatPixels[px] = ParallelMath::ToFloat(pixels[px]); + } + + MUInt15 sortedPixels[16]; + for (int px = 0; px < 16; px++) + sortedPixels[px] = pixels[px]; + + for (int sortEnd = 15; sortEnd > 0; sortEnd--) + { + for (int sortOffset = 0; sortOffset < sortEnd; sortOffset++) + { + MUInt15 a = sortedPixels[sortOffset]; + MUInt15 b = sortedPixels[sortOffset + 1]; + + sortedPixels[sortOffset] = ParallelMath::Min(a, b); + sortedPixels[sortOffset + 1] = ParallelMath::Max(a, b); + } + } + + MUInt15 zero = ParallelMath::MakeUInt15(0); + MUInt15 one = ParallelMath::MakeUInt15(1); + + MUInt15 bestIsFullRange = zero; + MFloat bestError = ParallelMath::MakeFloat(FLT_MAX); + MUInt15 bestEP[2] = { zero, zero }; + MUInt15 bestIndexes[16] = { + zero, zero, zero, zero, + zero, zero, zero, zero, + zero, zero, zero, zero, + zero, zero, zero, zero + }; + + // Full-precision + { + MUInt15 minEP = sortedPixels[0]; + MUInt15 maxEP = sortedPixels[15]; + + MFloat base[1] = { ParallelMath::ToFloat(minEP) }; + MFloat offset[1] = { ParallelMath::ToFloat(maxEP - minEP) }; + + UnfinishedEndpoints<1> ufep = UnfinishedEndpoints<1>(base, offset); + + int numTweakRounds = BCCommon::TweakRoundsForRange(8); + if (numTweakRounds > maxTweakRounds) + numTweakRounds = maxTweakRounds; + + for (int tweak = 0; tweak < numTweakRounds; tweak++) + { + MUInt15 ep[2][1]; + + ufep.FinishLDR(tweak, 8, ep[0], ep[1]); + + for (int refinePass = 0; refinePass < numRefineRounds; refinePass++) + { + EndpointRefiner<1> refiner; + refiner.Init(8, oneWeight); + + if (isSigned) + for (int epi = 0; epi < 2; epi++) + ep[epi][0] = ParallelMath::Min(ep[epi][0], highTerminal); + + IndexSelector<1> indexSelector; + indexSelector.Init<false>(oneWeight, ep, 8); + + MUInt15 indexes[16]; + + AggregatedError<1> aggError; + for (int px = 0; px < 16; px++) + { + MUInt15 index = indexSelector.SelectIndexLDR(&floatPixels[px], &rtn); + + MUInt15 reconstructedPixel; + + indexSelector.ReconstructLDRPrecise(index, &reconstructedPixel); + BCCommon::ComputeErrorLDR<1>(flags, &reconstructedPixel, &pixels[px], aggError); + + if (refinePass != numRefineRounds - 1) + refiner.ContributeUnweightedPW(&floatPixels[px], index); + + indexes[px] = index; + } + MFloat error = aggError.Finalize(flags | Flags::Uniform, oneWeight); + + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(error, bestError); + ParallelMath::Int16CompFlag errorBetter16 = ParallelMath::FloatFlagToInt16(errorBetter); + + if (ParallelMath::AnySet(errorBetter16)) + { + bestError = ParallelMath::Min(error, bestError); + ParallelMath::ConditionalSet(bestIsFullRange, errorBetter16, one); + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestIndexes[px], errorBetter16, indexes[px]); + + for (int epi = 0; epi < 2; epi++) + ParallelMath::ConditionalSet(bestEP[epi], errorBetter16, ep[epi][0]); + } + + if (refinePass != numRefineRounds - 1) + refiner.GetRefinedEndpointsLDR(ep, &rtn); + } + } + } + + // Reduced precision with special endpoints + { + MUInt15 bestHeuristicMin = sortedPixels[0]; + MUInt15 bestHeuristicMax = sortedPixels[15]; + + ParallelMath::Int16CompFlag canTryClipping; + + // In reduced precision, we want try putting endpoints at the reserved indexes at the ends. + // The heuristic we use is to assign indexes to the end as long as they aren't off by more than half of the index range. + // This will usually not find anything, but it's cheap to check. + + { + MUInt15 largestPossibleRange = bestHeuristicMax - bestHeuristicMin; // Max: 255 + MUInt15 lowestPossibleClearance = ParallelMath::Min(bestHeuristicMin, static_cast<MUInt15>(highTerminal - bestHeuristicMax)); + + MUInt15 lowestPossibleClearanceTimes10 = (lowestPossibleClearance << 2) + (lowestPossibleClearance << 4); + canTryClipping = ParallelMath::LessOrEqual(lowestPossibleClearanceTimes10, largestPossibleRange); + } + + if (ParallelMath::AnySet(canTryClipping)) + { + MUInt15 lowClearances[16]; + MUInt15 highClearances[16]; + MUInt15 bestSkipCount = ParallelMath::MakeUInt15(0); + + lowClearances[0] = highClearances[0] = ParallelMath::MakeUInt15(0); + + for (int px = 1; px < 16; px++) + { + lowClearances[px] = sortedPixels[px - 1]; + highClearances[px] = highTerminal - sortedPixels[16 - px]; + } + + for (uint16_t firstIndex = 0; firstIndex < 16; firstIndex++) + { + uint16_t numSkippedLow = firstIndex; + + MUInt15 lowClearance = lowClearances[firstIndex]; + + for (uint16_t lastIndex = firstIndex; lastIndex < 16; lastIndex++) + { + uint16_t numSkippedHigh = 15 - lastIndex; + uint16_t numSkipped = numSkippedLow + numSkippedHigh; + + MUInt15 numSkippedV = ParallelMath::MakeUInt15(numSkipped); + + ParallelMath::Int16CompFlag areMoreSkipped = ParallelMath::Less(bestSkipCount, numSkippedV); + + if (!ParallelMath::AnySet(areMoreSkipped)) + continue; + + MUInt15 clearance = ParallelMath::Max(highClearances[numSkippedHigh], lowClearance); + MUInt15 clearanceTimes10 = (clearance << 2) + (clearance << 4); + + MUInt15 range = sortedPixels[lastIndex] - sortedPixels[firstIndex]; + + ParallelMath::Int16CompFlag isBetter = (areMoreSkipped & ParallelMath::LessOrEqual(clearanceTimes10, range)); + ParallelMath::ConditionalSet(bestHeuristicMin, isBetter, sortedPixels[firstIndex]); + ParallelMath::ConditionalSet(bestHeuristicMax, isBetter, sortedPixels[lastIndex]); + } + } + } + + MUInt15 bestSimpleMin = one; + MUInt15 bestSimpleMax = highTerminalMinusOne; + + for (int px = 0; px < 16; px++) + { + ParallelMath::ConditionalSet(bestSimpleMin, ParallelMath::Less(zero, sortedPixels[15 - px]), sortedPixels[15 - px]); + ParallelMath::ConditionalSet(bestSimpleMax, ParallelMath::Less(sortedPixels[px], highTerminal), sortedPixels[px]); + } + + MUInt15 minEPs[2] = { bestSimpleMin, bestHeuristicMin }; + MUInt15 maxEPs[2] = { bestSimpleMax, bestHeuristicMax }; + + int minEPRange = 2; + if (ParallelMath::AllSet(ParallelMath::Equal(minEPs[0], minEPs[1]))) + minEPRange = 1; + + int maxEPRange = 2; + if (ParallelMath::AllSet(ParallelMath::Equal(maxEPs[0], maxEPs[1]))) + maxEPRange = 1; + + for (int minEPIndex = 0; minEPIndex < minEPRange; minEPIndex++) + { + for (int maxEPIndex = 0; maxEPIndex < maxEPRange; maxEPIndex++) + { + MFloat base[1] = { ParallelMath::ToFloat(minEPs[minEPIndex]) }; + MFloat offset[1] = { ParallelMath::ToFloat(maxEPs[maxEPIndex] - minEPs[minEPIndex]) }; + + UnfinishedEndpoints<1> ufep = UnfinishedEndpoints<1>(base, offset); + + int numTweakRounds = BCCommon::TweakRoundsForRange(6); + if (numTweakRounds > maxTweakRounds) + numTweakRounds = maxTweakRounds; + + for (int tweak = 0; tweak < numTweakRounds; tweak++) + { + MUInt15 ep[2][1]; + + ufep.FinishLDR(tweak, 8, ep[0], ep[1]); + + for (int refinePass = 0; refinePass < numRefineRounds; refinePass++) + { + EndpointRefiner<1> refiner; + refiner.Init(6, oneWeight); + + if (isSigned) + for (int epi = 0; epi < 2; epi++) + ep[epi][0] = ParallelMath::Min(ep[epi][0], highTerminal); + + IndexSelector<1> indexSelector; + indexSelector.Init<false>(oneWeight, ep, 6); + + MUInt15 indexes[16]; + MFloat error = ParallelMath::MakeFloatZero(); + + for (int px = 0; px < 16; px++) + { + MUInt15 selectedIndex = indexSelector.SelectIndexLDR(&floatPixels[px], &rtn); + + MUInt15 reconstructedPixel; + + indexSelector.ReconstructLDRPrecise(selectedIndex, &reconstructedPixel); + + MFloat zeroError = BCCommon::ComputeErrorLDRSimple<1>(flags | Flags::Uniform, &zero, &pixels[px], 1, oneWeight); + MFloat highTerminalError = BCCommon::ComputeErrorLDRSimple<1>(flags | Flags::Uniform, &highTerminal, &pixels[px], 1, oneWeight); + MFloat selectedIndexError = BCCommon::ComputeErrorLDRSimple<1>(flags | Flags::Uniform, &reconstructedPixel, &pixels[px], 1, oneWeight); + + MFloat bestPixelError = zeroError; + MUInt15 index = ParallelMath::MakeUInt15(6); + + ParallelMath::ConditionalSet(index, ParallelMath::FloatFlagToInt16(ParallelMath::Less(highTerminalError, bestPixelError)), ParallelMath::MakeUInt15(7)); + bestPixelError = ParallelMath::Min(bestPixelError, highTerminalError); + + ParallelMath::FloatCompFlag selectedIndexBetter = ParallelMath::Less(selectedIndexError, bestPixelError); + + if (ParallelMath::AllSet(selectedIndexBetter)) + { + if (refinePass != numRefineRounds - 1) + refiner.ContributeUnweightedPW(&floatPixels[px], selectedIndex); + } + else + { + MFloat refineWeight = ParallelMath::Select(selectedIndexBetter, ParallelMath::MakeFloat(1.0f), ParallelMath::MakeFloatZero()); + + if (refinePass != numRefineRounds - 1) + refiner.ContributePW(&floatPixels[px], selectedIndex, refineWeight); + } + + ParallelMath::ConditionalSet(index, ParallelMath::FloatFlagToInt16(selectedIndexBetter), selectedIndex); + bestPixelError = ParallelMath::Min(bestPixelError, selectedIndexError); + + error = error + bestPixelError; + + indexes[px] = index; + } + + ParallelMath::FloatCompFlag errorBetter = ParallelMath::Less(error, bestError); + ParallelMath::Int16CompFlag errorBetter16 = ParallelMath::FloatFlagToInt16(errorBetter); + + if (ParallelMath::AnySet(errorBetter16)) + { + bestError = ParallelMath::Min(error, bestError); + ParallelMath::ConditionalSet(bestIsFullRange, errorBetter16, zero); + for (int px = 0; px < 16; px++) + ParallelMath::ConditionalSet(bestIndexes[px], errorBetter16, indexes[px]); + + for (int epi = 0; epi < 2; epi++) + ParallelMath::ConditionalSet(bestEP[epi], errorBetter16, ep[epi][0]); + } + + if (refinePass != numRefineRounds - 1) + refiner.GetRefinedEndpointsLDR(ep, &rtn); + } + } + } + } + } + + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + int ep0 = ParallelMath::Extract(bestEP[0], block); + int ep1 = ParallelMath::Extract(bestEP[1], block); + int isFullRange = ParallelMath::Extract(bestIsFullRange, block); + + if (isSigned) + { + ep0 -= 127; + ep1 -= 127; + + assert(ep0 >= -127 && ep0 <= 127); + assert(ep1 >= -127 && ep1 <= 127); + } + + + bool swapEndpoints = (isFullRange != 0) != (ep0 > ep1); + + if (swapEndpoints) + std::swap(ep0, ep1); + + uint16_t dumpBits = 0; + int dumpBitsOffset = 0; + int dumpByteOffset = 2; + packedBlocks[0] = static_cast<uint8_t>(ep0 & 0xff); + packedBlocks[1] = static_cast<uint8_t>(ep1 & 0xff); + + int maxValue = (isFullRange != 0) ? 7 : 5; + + for (int px = 0; px < 16; px++) + { + int index = ParallelMath::Extract(bestIndexes[px], block); + + if (swapEndpoints && index <= maxValue) + index = maxValue - index; + + if (index != 0) + { + if (index == maxValue) + index = 1; + else if (index < maxValue) + index++; + } + + assert(index >= 0 && index < 8); + + dumpBits |= static_cast<uint16_t>(index << dumpBitsOffset); + dumpBitsOffset += 3; + + if (dumpBitsOffset >= 8) + { + assert(dumpByteOffset < 8); + packedBlocks[dumpByteOffset] = static_cast<uint8_t>(dumpBits & 0xff); + dumpBits >>= 8; + dumpBitsOffset -= 8; + dumpByteOffset++; + } + } + + assert(dumpBitsOffset == 0); + assert(dumpByteOffset == 8); + + packedBlocks += packedBlockStride; + } + } + + static void PackRGB(uint32_t flags, const PixelBlockU8* inputs, uint8_t* packedBlocks, size_t packedBlockStride, const float channelWeights[4], bool alphaTest, float alphaThreshold, bool exhaustive, int maxTweakRounds, int numRefineRounds) + { + ParallelMath::RoundTowardNearestForScope rtn; + + if (numRefineRounds < 1) + numRefineRounds = 1; + + if (maxTweakRounds < 1) + maxTweakRounds = 1; + + EndpointSelector<3, 8> endpointSelector; + + MUInt15 pixels[16][4]; + MFloat floatPixels[16][4]; + + MFloat preWeightedPixels[16][4]; + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 4; ch++) + ParallelMath::ConvertLDRInputs(inputs, px, ch, pixels[px][ch]); + } + + for (int px = 0; px < 16; px++) + { + for (int ch = 0; ch < 4; ch++) + floatPixels[px][ch] = ParallelMath::ToFloat(pixels[px][ch]); + } + + if (alphaTest) + { + MUInt15 threshold = ParallelMath::MakeUInt15(static_cast<uint16_t>(floor(alphaThreshold * 255.0f + 0.5f))); + + for (int px = 0; px < 16; px++) + { + ParallelMath::Int16CompFlag belowThreshold = ParallelMath::Less(pixels[px][3], threshold); + pixels[px][3] = ParallelMath::Select(belowThreshold, ParallelMath::MakeUInt15(0), ParallelMath::MakeUInt15(255)); + } + } + + BCCommon::PreWeightPixelsLDR<4>(preWeightedPixels, pixels, channelWeights); + + MUInt15 minAlpha = ParallelMath::MakeUInt15(255); + + for (int px = 0; px < 16; px++) + minAlpha = ParallelMath::Min(minAlpha, pixels[px][3]); + + MFloat pixelWeights[16]; + for (int px = 0; px < 16; px++) + { + pixelWeights[px] = ParallelMath::MakeFloat(1.0f); + if (alphaTest) + { + ParallelMath::Int16CompFlag isTransparent = ParallelMath::Less(pixels[px][3], ParallelMath::MakeUInt15(255)); + + ParallelMath::ConditionalSet(pixelWeights[px], ParallelMath::Int16FlagToFloat(isTransparent), ParallelMath::MakeFloatZero()); + } + } + + for (int pass = 0; pass < NumEndpointSelectorPasses; pass++) + { + for (int px = 0; px < 16; px++) + endpointSelector.ContributePass(preWeightedPixels[px], pass, pixelWeights[px]); + + endpointSelector.FinishPass(pass); + } + + UnfinishedEndpoints<3> ufep = endpointSelector.GetEndpoints(channelWeights); + + MUInt15 bestEndpoints[2][3]; + MUInt15 bestIndexes[16]; + MUInt15 bestRange = ParallelMath::MakeUInt15(0); + MFloat bestError = ParallelMath::MakeFloat(FLT_MAX); + + for (int px = 0; px < 16; px++) + bestIndexes[px] = ParallelMath::MakeUInt15(0); + + for (int ep = 0; ep < 2; ep++) + for (int ch = 0; ch < 3; ch++) + bestEndpoints[ep][ch] = ParallelMath::MakeUInt15(0); + + if (exhaustive) + { + MSInt16 sortBins[16]; + + { + // Compute an 11-bit index, change it to signed, stuff it in the high bits of the sort bins, + // and pack the original indexes into the low bits. + + MUInt15 sortEP[2][3]; + ufep.FinishLDR(0, 11, sortEP[0], sortEP[1]); + + IndexSelector<3> sortSelector; + sortSelector.Init<false>(channelWeights, sortEP, 1 << 11); + + for (int16_t px = 0; px < 16; px++) + { + MSInt16 sortBin = ParallelMath::LosslessCast<MSInt16>::Cast(sortSelector.SelectIndexLDR(floatPixels[px], &rtn) << 4); + + if (alphaTest) + { + ParallelMath::Int16CompFlag isTransparent = ParallelMath::Less(pixels[px][3], ParallelMath::MakeUInt15(255)); + + ParallelMath::ConditionalSet(sortBin, isTransparent, ParallelMath::MakeSInt16(-16)); // 0xfff0 + } + + sortBin = sortBin + ParallelMath::MakeSInt16(px); + + sortBins[px] = sortBin; + } + } + + // Sort bins + for (int sortEnd = 1; sortEnd < 16; sortEnd++) + { + for (int sortLoc = sortEnd; sortLoc > 0; sortLoc--) + { + MSInt16 a = sortBins[sortLoc]; + MSInt16 b = sortBins[sortLoc - 1]; + + sortBins[sortLoc] = ParallelMath::Max(a, b); + sortBins[sortLoc - 1] = ParallelMath::Min(a, b); + } + } + + MUInt15 firstElement = ParallelMath::MakeUInt15(0); + for (uint16_t e = 0; e < 16; e++) + { + ParallelMath::Int16CompFlag isInvalid = ParallelMath::Less(sortBins[e], ParallelMath::MakeSInt16(0)); + ParallelMath::ConditionalSet(firstElement, isInvalid, ParallelMath::MakeUInt15(e + 1)); + if (!ParallelMath::AnySet(isInvalid)) + break; + } + + MUInt15 numElements = ParallelMath::MakeUInt15(16) - firstElement; + + MUInt15 sortedInputs[16][4]; + MFloat floatSortedInputs[16][4]; + MFloat pwFloatSortedInputs[16][4]; + + for (int e = 0; e < 16; e++) + { + for (int ch = 0; ch < 4; ch++) + sortedInputs[e][ch] = ParallelMath::MakeUInt15(0); + } + + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + for (int e = ParallelMath::Extract(firstElement, block); e < 16; e++) + { + ParallelMath::ScalarUInt16 sortBin = ParallelMath::Extract(sortBins[e], block); + int originalIndex = (sortBin & 15); + + for (int ch = 0; ch < 4; ch++) + ParallelMath::PutUInt15(sortedInputs[15 - e][ch], block, ParallelMath::Extract(pixels[originalIndex][ch], block)); + } + } + + for (int e = 0; e < 16; e++) + { + for (int ch = 0; ch < 4; ch++) + { + MFloat f = ParallelMath::ToFloat(sortedInputs[e][ch]); + floatSortedInputs[e][ch] = f; + pwFloatSortedInputs[e][ch] = f * channelWeights[ch]; + } + } + + for (int n0 = 0; n0 <= 15; n0++) + { + int remainingFor1 = 16 - n0; + if (remainingFor1 == 16) + remainingFor1 = 15; + + for (int n1 = 0; n1 <= remainingFor1; n1++) + { + int remainingFor2 = 16 - n1 - n0; + if (remainingFor2 == 16) + remainingFor2 = 15; + + for (int n2 = 0; n2 <= remainingFor2; n2++) + { + int n3 = 16 - n2 - n1 - n0; + + if (n3 == 16) + continue; + + int counts[4] = { n0, n1, n2, n3 }; + + TestCounts(flags, counts, 4, numElements, pixels, floatPixels, preWeightedPixels, alphaTest, floatSortedInputs, pwFloatSortedInputs, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, &rtn); + } + } + } + + TestSingleColor(flags, pixels, floatPixels, 4, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, &rtn); + + if (alphaTest) + { + for (int n0 = 0; n0 <= 15; n0++) + { + int remainingFor1 = 16 - n0; + if (remainingFor1 == 16) + remainingFor1 = 15; + + for (int n1 = 0; n1 <= remainingFor1; n1++) + { + int n2 = 16 - n1 - n0; + + if (n2 == 16) + continue; + + int counts[3] = { n0, n1, n2 }; + + TestCounts(flags, counts, 3, numElements, pixels, floatPixels, preWeightedPixels, alphaTest, floatSortedInputs, pwFloatSortedInputs, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, &rtn); + } + } + + TestSingleColor(flags, pixels, floatPixels, 3, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, &rtn); + } + } + else + { + int minRange = alphaTest ? 3 : 4; + + for (int range = minRange; range <= 4; range++) + { + int tweakRounds = BCCommon::TweakRoundsForRange(range); + if (tweakRounds > maxTweakRounds) + tweakRounds = maxTweakRounds; + + for (int tweak = 0; tweak < tweakRounds; tweak++) + { + MUInt15 endPoints[2][3]; + + ufep.FinishLDR(tweak, range, endPoints[0], endPoints[1]); + + for (int refine = 0; refine < numRefineRounds; refine++) + { + EndpointRefiner<3> refiner; + refiner.Init(range, channelWeights); + + TestEndpoints(flags, pixels, floatPixels, preWeightedPixels, endPoints, range, channelWeights, bestError, bestEndpoints, bestIndexes, bestRange, &refiner, &rtn); + + if (refine != numRefineRounds - 1) + refiner.GetRefinedEndpointsLDR(endPoints, &rtn); + } + } + } + } + + for (int block = 0; block < ParallelMath::ParallelSize; block++) + { + ParallelMath::ScalarUInt16 range = ParallelMath::Extract(bestRange, block); + assert(range == 3 || range == 4); + + ParallelMath::ScalarUInt16 compressedEP[2]; + for (int ep = 0; ep < 2; ep++) + { + ParallelMath::ScalarUInt16 endPoint[3]; + for (int ch = 0; ch < 3; ch++) + endPoint[ch] = ParallelMath::Extract(bestEndpoints[ep][ch], block); + + int compressed = (endPoint[0] & 0xf8) << 8; + compressed |= (endPoint[1] & 0xfc) << 3; + compressed |= (endPoint[2] & 0xf8) >> 3; + + compressedEP[ep] = static_cast<ParallelMath::ScalarUInt16>(compressed); + } + + int indexOrder[4]; + + if (range == 4) + { + if (compressedEP[0] == compressedEP[1]) + { + indexOrder[0] = 0; + indexOrder[1] = 0; + indexOrder[2] = 0; + indexOrder[3] = 0; + } + else if (compressedEP[0] < compressedEP[1]) + { + std::swap(compressedEP[0], compressedEP[1]); + indexOrder[0] = 1; + indexOrder[1] = 3; + indexOrder[2] = 2; + indexOrder[3] = 0; + } + else + { + indexOrder[0] = 0; + indexOrder[1] = 2; + indexOrder[2] = 3; + indexOrder[3] = 1; + } + } + else + { + assert(range == 3); + + if (compressedEP[0] > compressedEP[1]) + { + std::swap(compressedEP[0], compressedEP[1]); + indexOrder[0] = 1; + indexOrder[1] = 2; + indexOrder[2] = 0; + } + else + { + indexOrder[0] = 0; + indexOrder[1] = 2; + indexOrder[2] = 1; + } + indexOrder[3] = 3; + } + + packedBlocks[0] = static_cast<uint8_t>(compressedEP[0] & 0xff); + packedBlocks[1] = static_cast<uint8_t>((compressedEP[0] >> 8) & 0xff); + packedBlocks[2] = static_cast<uint8_t>(compressedEP[1] & 0xff); + packedBlocks[3] = static_cast<uint8_t>((compressedEP[1] >> 8) & 0xff); + + for (int i = 0; i < 16; i += 4) + { + int packedIndexes = 0; + for (int subi = 0; subi < 4; subi++) + { + ParallelMath::ScalarUInt16 index = ParallelMath::Extract(bestIndexes[i + subi], block); + packedIndexes |= (indexOrder[index] << (subi * 2)); + } + + packedBlocks[4 + i / 4] = static_cast<uint8_t>(packedIndexes); + } + + packedBlocks += packedBlockStride; + } + } + }; + + // Signed input blocks are converted into unsigned space, with the maximum value being 254 + void BiasSignedInput(PixelBlockU8 inputNormalized[ParallelMath::ParallelSize], const PixelBlockS8 inputSigned[ParallelMath::ParallelSize]) + { + for (size_t block = 0; block < ParallelMath::ParallelSize; block++) + { + const PixelBlockS8& inputSignedBlock = inputSigned[block]; + PixelBlockU8& inputNormalizedBlock = inputNormalized[block]; + + for (size_t px = 0; px < 16; px++) + { + for (size_t ch = 0; ch < 4; ch++) + inputNormalizedBlock.m_pixels[px][ch] = static_cast<uint8_t>(std::max<int>(inputSignedBlock.m_pixels[px][ch], -127) + 127); + } + } + } + + void FillWeights(const Options &options, float channelWeights[4]) + { + if (options.flags & Flags::Uniform) + channelWeights[0] = channelWeights[1] = channelWeights[2] = channelWeights[3] = 1.0f; + else + { + channelWeights[0] = options.redWeight; + channelWeights[1] = options.greenWeight; + channelWeights[2] = options.blueWeight; + channelWeights[3] = options.alphaWeight; + } + } + } + + namespace Kernels + { + void EncodeBC7(uint8_t *pBC, const PixelBlockU8 *pBlocks, const cvtt::Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::BC7Computer::Pack(options.flags, pBlocks + blockBase, pBC, channelWeights, options.seedPoints, options.refineRoundsBC7); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC6HU(uint8_t *pBC, const PixelBlockF16 *pBlocks, const cvtt::Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::BC6HComputer::Pack(options.flags, pBlocks + blockBase, pBC, channelWeights, false, options.seedPoints, options.refineRoundsBC6H); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC6HS(uint8_t *pBC, const PixelBlockF16 *pBlocks, const cvtt::Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::BC6HComputer::Pack(options.flags, pBlocks + blockBase, pBC, channelWeights, true, options.seedPoints, options.refineRoundsBC6H); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC1(uint8_t *pBC, const PixelBlockU8 *pBlocks, const cvtt::Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::S3TCComputer::PackRGB(options.flags, pBlocks + blockBase, pBC, 8, channelWeights, true, options.threshold, (options.flags & Flags::S3TC_Exhaustive) != 0, options.seedPoints, options.refineRoundsS3TC); + pBC += ParallelMath::ParallelSize * 8; + } + } + + void EncodeBC2(uint8_t *pBC, const PixelBlockU8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::S3TCComputer::PackRGB(options.flags, pBlocks + blockBase, pBC + 8, 16, channelWeights, false, 1.0f, (options.flags & Flags::S3TC_Exhaustive) != 0, options.seedPoints, options.refineRoundsS3TC); + Internal::S3TCComputer::PackExplicitAlpha(options.flags, pBlocks + blockBase, 3, pBC, 16); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC3(uint8_t *pBC, const PixelBlockU8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::S3TCComputer::PackRGB(options.flags, pBlocks + blockBase, pBC + 8, 16, channelWeights, false, 1.0f, (options.flags & Flags::S3TC_Exhaustive) != 0, options.seedPoints, options.refineRoundsS3TC); + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, pBlocks + blockBase, 3, pBC, 16, false, options.seedPoints, options.refineRoundsIIC); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC4U(uint8_t *pBC, const PixelBlockU8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, pBlocks + blockBase, 0, pBC, 8, false, options.seedPoints, options.refineRoundsIIC); + pBC += ParallelMath::ParallelSize * 8; + } + } + + void EncodeBC4S(uint8_t *pBC, const PixelBlockS8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + PixelBlockU8 inputBlocks[ParallelMath::ParallelSize]; + Internal::BiasSignedInput(inputBlocks, pBlocks + blockBase); + + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, inputBlocks, 0, pBC, 8, true, options.seedPoints, options.refineRoundsIIC); + pBC += ParallelMath::ParallelSize * 8; + } + } + + void EncodeBC5U(uint8_t *pBC, const PixelBlockU8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, pBlocks + blockBase, 0, pBC, 16, false, options.seedPoints, options.refineRoundsIIC); + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, pBlocks + blockBase, 1, pBC + 8, 16, false, options.seedPoints, options.refineRoundsIIC); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void EncodeBC5S(uint8_t *pBC, const PixelBlockS8 *pBlocks, const Options &options) + { + assert(pBlocks); + assert(pBC); + + float channelWeights[4]; + Internal::FillWeights(options, channelWeights); + + for (size_t blockBase = 0; blockBase < NumParallelBlocks; blockBase += ParallelMath::ParallelSize) + { + PixelBlockU8 inputBlocks[ParallelMath::ParallelSize]; + Internal::BiasSignedInput(inputBlocks, pBlocks + blockBase); + + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, inputBlocks, 0, pBC, 16, true, options.seedPoints, options.refineRoundsIIC); + Internal::S3TCComputer::PackInterpolatedAlpha(options.flags, inputBlocks, 1, pBC + 8, 16, true, options.seedPoints, options.refineRoundsIIC); + pBC += ParallelMath::ParallelSize * 16; + } + } + + void DecodeBC7(PixelBlockU8 *pBlocks, const uint8_t *pBC) + { + assert(pBlocks); + assert(pBC); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase++) + { + Internal::BC7Computer::UnpackOne(pBlocks[blockBase], pBC); + pBC += 16; + } + } + + void DecodeBC6HU(PixelBlockF16 *pBlocks, const uint8_t *pBC) + { + assert(pBlocks); + assert(pBC); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase++) + { + Internal::BC6HComputer::UnpackOne(pBlocks[blockBase], pBC, false); + pBC += 16; + } + } + + void DecodeBC6HS(PixelBlockF16 *pBlocks, const uint8_t *pBC) + { + assert(pBlocks); + assert(pBC); + + for (size_t blockBase = 0; blockBase < cvtt::NumParallelBlocks; blockBase++) + { + Internal::BC6HComputer::UnpackOne(pBlocks[blockBase], pBC, true); + pBC += 16; + } + } + } +} |