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initial commit, 4.5 stable
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This commit is contained in:
noahbackus
2025-09-16 20:46:46 -04:00
commit 9d30169a8d
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51
thirdparty/cvtt/ConvectionKernels_S3TC.h vendored Normal file
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#pragma once
#ifndef __CVTT_S3TC_H__
#define __CVTT_S3TC_H__
#include "ConvectionKernels_ParallelMath.h"
namespace cvtt
{
namespace Internal
{
template<int TVectorSize>
class EndpointRefiner;
}
struct PixelBlockU8;
}
namespace cvtt
{
namespace Internal
{
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);
static void QuantizeTo6Bits(MUInt15& v);
static void QuantizeTo5Bits(MUInt15& v);
static void QuantizeTo565(MUInt15 endPoint[3]);
static MFloat ParanoidFactorForSpan(const MSInt16& span);
static MFloat ParanoidDiff(const MUInt15& a, const MUInt15& b, const MFloat& d);
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);
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);
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);
static void PackExplicitAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride);
static void PackInterpolatedAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride, bool isSigned, int maxTweakRounds, int numRefineRounds);
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);
};
}
}
#endif