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85 lines
3.4 KiB
C++
85 lines
3.4 KiB
C++
// Copyright NVIDIA Corporation 2007 -- Ignacio Castano <icastano@nvidia.com>
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#ifndef NV_TT_FASTCOMPRESSDXT_H
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#define NV_TT_FASTCOMPRESSDXT_H
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#include <nvimage/nvimage.h>
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namespace nv
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{
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struct ColorBlock;
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struct BlockDXT1;
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struct BlockDXT3;
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struct BlockDXT5;
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struct AlphaBlockDXT3;
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struct AlphaBlockDXT5;
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// Color compression:
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// Compressor that uses the extremes of the luminance axis.
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// void compressBlock_DiameterAxis(const ColorBlock & rgba, BlockDXT1 * block);
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// Compressor that uses the extremes of the luminance axis.
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// void compressBlock_LuminanceAxis(const ColorBlock & rgba, BlockDXT1 * block);
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// Compressor that uses bounding box.
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void compressBlock_BoundsRange(const ColorBlock & rgba, BlockDXT1 * block);
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// Compressor that uses bounding box and takes alpha into account.
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// void compressBlock_BoundsRangeAlpha(const ColorBlock & rgba, BlockDXT1 * block);
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// Simple, but slow compressor that tests all color pairs.
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// void compressBlock_TestAllPairs(const ColorBlock & rgba, BlockDXT1 * block);
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// Brute force 6d search along the best fit axis.
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// void compressBlock_AnalyzeBestFitAxis(const ColorBlock & rgba, BlockDXT1 * block);
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// Spatial greedy search.
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// void refineSolution_1dSearch(const ColorBlock & rgba, BlockDXT1 * block);
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// void refineSolution_3dSearch(const ColorBlock & rgba, BlockDXT1 * block);
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// void refineSolution_6dSearch(const ColorBlock & rgba, BlockDXT1 * block);
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// Brute force compressor for DXT5n
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// void compressGreenBlock_BruteForce(const ColorBlock & rgba, BlockDXT1 * block);
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// Minimize error of the endpoints.
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// void optimizeEndPoints(const ColorBlock & rgba, BlockDXT1 * block);
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// uint blockError(const ColorBlock & rgba, const BlockDXT1 & block);
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// uint blockError(const ColorBlock & rgba, const AlphaBlockDXT5 & block);
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// Alpha compression:
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void compressBlock(const ColorBlock & rgba, AlphaBlockDXT3 * block);
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void compressBlock_BoundsRange(const ColorBlock & rgba, BlockDXT3 * block);
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void compressBlock_BoundsRange(const ColorBlock & rgba, BlockDXT5 * block);
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uint compressBlock_BoundsRange(const ColorBlock & rgba, AlphaBlockDXT5 * block);
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uint compressBlock_BruteForce(const ColorBlock & rgba, AlphaBlockDXT5 * block);
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// uint compressBlock_Iterative(const ColorBlock & rgba, AlphaBlockDXT5 * block);
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} // nv namespace
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#endif // NV_TT_FASTCOMPRESSDXT_H
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