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52 lines
2.8 KiB
C++
52 lines
2.8 KiB
C++
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#pragma once
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#ifndef __CVTT_S3TC_H__
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#define __CVTT_S3TC_H__
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#include "ConvectionKernels_ParallelMath.h"
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namespace cvtt
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{
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namespace Internal
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{
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template<int TVectorSize>
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class EndpointRefiner;
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}
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struct PixelBlockU8;
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}
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namespace cvtt
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{
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namespace Internal
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{
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class S3TCComputer
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{
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public:
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typedef ParallelMath::Float MFloat;
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typedef ParallelMath::SInt16 MSInt16;
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typedef ParallelMath::UInt15 MUInt15;
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typedef ParallelMath::UInt16 MUInt16;
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typedef ParallelMath::SInt32 MSInt32;
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static void Init(MFloat& error);
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static void QuantizeTo6Bits(MUInt15& v);
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static void QuantizeTo5Bits(MUInt15& v);
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static void QuantizeTo565(MUInt15 endPoint[3]);
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static MFloat ParanoidFactorForSpan(const MSInt16& span);
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static MFloat ParanoidDiff(const MUInt15& a, const MUInt15& b, const MFloat& d);
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static void TestSingleColor(uint32_t flags, const MUInt15 pixels[16][4], const MFloat floatPixels[16][4], int range, const float* channelWeights,
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MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange, const ParallelMath::RoundTowardNearestForScope *rtn);
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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,
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MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange, EndpointRefiner<3> *refiner, const ParallelMath::RoundTowardNearestForScope *rtn);
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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,
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const MFloat floatSortedInputs[16][4], const MFloat preWeightedFloatSortedInputs[16][4], const float *channelWeights, MFloat &bestError, MUInt15 bestEndpoints[2][3], MUInt15 bestIndexes[16], MUInt15 &bestRange,
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const ParallelMath::RoundTowardNearestForScope* rtn);
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static void PackExplicitAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride);
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static void PackInterpolatedAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride, bool isSigned, int maxTweakRounds, int numRefineRounds);
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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);
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};
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}
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}
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#endif
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