godot/thirdparty/cvtt/ConvectionKernels_S3TC.cpp

/*
Convection Texture Tools
Copyright (c) 2018-2019 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_Config.h"

#if !defined(CVTT_SINGLE_FILE) || defined(CVTT_SINGLE_FILE_IMPL)

#include "ConvectionKernels_S3TC.h"

#include "ConvectionKernels_AggregatedError.h"
#include "ConvectionKernels_BCCommon.h"
#include "ConvectionKernels_EndpointRefiner.h"
#include "ConvectionKernels_EndpointSelector.h"
#include "ConvectionKernels_IndexSelector.h"
#include "ConvectionKernels_UnfinishedEndpoints.h"
#include "ConvectionKernels_S3TC_SingleColor.h"

void cvtt::Internal::S3TCComputer::Init(MFloat& error)
{ … }

void cvtt::Internal::S3TCComputer::QuantizeTo6Bits(MUInt15& v)
{ … }

void cvtt::Internal::S3TCComputer::QuantizeTo5Bits(MUInt15& v)
{ … }

void cvtt::Internal::S3TCComputer::QuantizeTo565(MUInt15 endPoint[3])
{ … }

cvtt::ParallelMath::Float cvtt::Internal::S3TCComputer::ParanoidFactorForSpan(const MSInt16& span)
{ … }

cvtt::ParallelMath::Float cvtt::Internal::S3TCComputer::ParanoidDiff(const MUInt15& a, const MUInt15& b, const MFloat& d)
{ … }

void cvtt::Internal::S3TCComputer::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)
{ … }

void cvtt::Internal::S3TCComputer::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)
{ … }

void cvtt::Internal::S3TCComputer::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)
{ … }

void cvtt::Internal::S3TCComputer::PackExplicitAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride)
{ … }

void cvtt::Internal::S3TCComputer::PackInterpolatedAlpha(uint32_t flags, const PixelBlockU8* inputs, int inputChannel, uint8_t* packedBlocks, size_t packedBlockStride, bool isSigned, int maxTweakRounds, int numRefineRounds)
{ … }

void cvtt::Internal::S3TCComputer::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