mirror of
https://github.com/yuzu-emu/FasTC.git
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90 lines
3.7 KiB
C++
90 lines
3.7 KiB
C++
/* FasTC
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* Copyright (c) 2013 University of North Carolina at Chapel Hill.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for educational, research, and non-profit purposes, without
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* fee, and without a written agreement is hereby granted, provided that the
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* above copyright notice, this paragraph, and the following four paragraphs
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* appear in all copies.
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*
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* Permission to incorporate this software into commercial products may be
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* obtained by contacting the authors or the Office of Technology Development
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* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
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*
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* This software program and documentation are copyrighted by the University of
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* North Carolina at Chapel Hill. The software program and documentation are
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* supplied "as is," without any accompanying services from the University of
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* North Carolina at Chapel Hill or the authors. The University of North
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* Carolina at Chapel Hill and the authors do not warrant that the operation of
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* the program will be uninterrupted or error-free. The end-user understands
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* that the program was developed for research purposes and is advised not to
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* rely exclusively on the program for any reason.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
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* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
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* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
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* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
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* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
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* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
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* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
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* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
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* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
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* ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
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*
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* The authors may be contacted via:
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*
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* Pavel Krajcevski
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* Dept of Computer Science
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* 201 S Columbia St
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* Frederick P. Brooks, Jr. Computer Science Bldg
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* Chapel Hill, NC 27599-3175
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* USA
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*
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* <http://gamma.cs.unc.edu/FasTC/>
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*/
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#include "rg_etc1.h"
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#include "ETCCompressor.h"
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#include <algorithm>
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#include <cstring>
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namespace ETCC {
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void Compress_RG(const FasTC::CompressionJob &cj) {
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rg_etc1::etc1_pack_params params;
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params.m_quality = rg_etc1::cLowQuality;
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rg_etc1::pack_etc1_block_init();
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uint32 kBlockSz = GetBlockSize(FasTC::eCompressionFormat_ETC1);
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const uint32 startBlock = cj.CoordsToBlockIdx(cj.XStart(), cj.YStart());
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uint8 *outBuf = cj.OutBuf() + startBlock * kBlockSz;
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const uint32 endY = std::min(cj.YEnd(), cj.Height() - 4);
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uint32 startX = cj.XStart();
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for(uint32 j = cj.YStart(); j <= endY; j += 4) {
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const uint32 endX = j == cj.YEnd()? cj.XEnd() : cj.Width();
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for(uint32 i = startX; i < endX; i += 4) {
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uint32 pixels[16];
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const uint32 *inPixels = reinterpret_cast<const uint32 *>(cj.InBuf());
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memcpy(pixels, inPixels + j*cj.Width() + i, 4 * sizeof(uint32));
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memcpy(pixels + 4, inPixels + (j+1)*cj.Width() + i, 4 * sizeof(uint32));
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memcpy(pixels + 8, inPixels + (j+2)*cj.Width() + i, 4 * sizeof(uint32));
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memcpy(pixels + 12, inPixels + (j+3)*cj.Width() + i, 4 * sizeof(uint32));
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pack_etc1_block(outBuf, pixels, params);
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outBuf += kBlockSz;
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}
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startX = 0;
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}
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}
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} // namespace PVRTCC
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