1 files changed, 99 insertions, 0 deletions
diff --git a/thirdparty/cvtt/ConvectionKernels_BC67.h b/thirdparty/cvtt/ConvectionKernels_BC67.h
new file mode 100644
index 0000000000..b929711187
--- /dev/null
+++ b/thirdparty/cvtt/ConvectionKernels_BC67.h
@@ -0,0 +1,99 @@
+#pragma once
+
+#include "ConvectionKernels_ParallelMath.h"
+
+
+namespace cvtt
+{
+    namespace Tables
+    {
+        namespace BC7SC
+        {
+            struct Table;
+        }
+    }
+
+    namespace Internal
+    {
+        namespace BC67
+        {
+            struct WorkInfo;
+        }
+
+        template<int TVectorSize>
+        class IndexSelectorHDR;
+    }
+
+    struct PixelBlockU8;
+}
+
+namespace cvtt
+{
+    namespace Internal
+    {
+        class BC7Computer
+        {
+        public:
+            static void Pack(uint32_t flags, const PixelBlockU8* inputs, uint8_t* packedBlocks, const float channelWeights[4], const BC7EncodingPlan &encodingPlan, int numRefineRounds);
+            static void UnpackOne(PixelBlockU8 &output, const uint8_t* packedBlock);
+
+        private:
+            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;
+
+            static void TweakAlpha(const MUInt15 original[2], int tweak, int range, MUInt15 result[2]);
+            static void Quantize(MUInt15* color, int bits, int channels);
+            static void QuantizeP(MUInt15* color, int bits, uint16_t p, int channels);
+            static void Unquantize(MUInt15* color, int bits, int channels);
+            static void CompressEndpoints0(MUInt15 ep[2][4], uint16_t p[2]);
+            static void CompressEndpoints1(MUInt15 ep[2][4], uint16_t p);
+            static void CompressEndpoints2(MUInt15 ep[2][4]);
+            static void CompressEndpoints3(MUInt15 ep[2][4], uint16_t p[2]);
+            static void CompressEndpoints4(MUInt15 epRGB[2][3], MUInt15 epA[2]);
+            static void CompressEndpoints5(MUInt15 epRGB[2][3], MUInt15 epA[2]);
+            static void CompressEndpoints6(MUInt15 ep[2][4], uint16_t p[2]);
+            static void CompressEndpoints7(MUInt15 ep[2][4], uint16_t p[2]);
+            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);
+            static void TrySinglePlane(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const float channelWeights[4], const BC7EncodingPlan &encodingPlan, int numRefineRounds, BC67::WorkInfo& work, const ParallelMath::RoundTowardNearestForScope *rtn);
+            static void TryDualPlane(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], const float channelWeights[4], const BC7EncodingPlan &encodingPlan, int numRefineRounds, BC67::WorkInfo& work, const ParallelMath::RoundTowardNearestForScope *rtn);
+
+            template<class T>
+            static void Swap(T& a, T& b);
+        };
+
+
+        class BC6HComputer
+        {
+        public:
+            static void Pack(uint32_t flags, const PixelBlockF16* inputs, uint8_t* packedBlocks, const float channelWeights[4], bool isSigned, int numTweakRounds, int numRefineRounds);
+            static void UnpackOne(PixelBlockF16 &output, const uint8_t *pBC, bool isSigned);
+
+        private:
+            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);
+            static MUInt15 QuantizeSingleEndpointElementUnsigned(const MUInt15 &elem, int precision, const ParallelMath::RoundUpForScope* ru);
+            static void UnquantizeSingleEndpointElementSigned(const MSInt16 &comp, int precision, MSInt16 &outUnquantized, MSInt16 &outUnquantizedFinished2CL);
+            static void UnquantizeSingleEndpointElementUnsigned(const MUInt15 &comp, int precision, MUInt16 &outUnquantized, MUInt16 &outUnquantizedFinished);
+            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);
+            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);
+            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);
+            static void EvaluateSingleLegality(const MAInt16 ep[2][3], int aPrec, const int bPrec[3], bool isTransformed, MAInt16 outEncodedEPs[2][3], ParallelMath::Int16CompFlag& outIsLegal);
+            static void SignExtendSingle(int &v, int bits);
+        };
+    }
+}