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https://github.com/yuzu-emu/FasTC.git
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a80944901e
In order to better facilitate the change from block stream order to non-block stream order, a lot of changes were introduced to the way that we feed texture data to the compressors. This data is embodied in the CompressionJob struct. We have made it so that the compression job points to both the in and out pointers for our compressed and uncompressed data. Furthermore, we have made sure that the struct also contains the format that its compressing for, so that if any threading programs would like to chop up a compression job into smaller chunks based on the format, it doesn't need to know the format explicitly, it just needs to know certain properties about the format. Moreover, the user can now define the start and end pixels from which we would like to compress to. We can compress subsets of data by changing the in and out pointers and the width and height values. The compressors will read data linearly until they reach the out pixels based on the width of the given pixel.
104 lines
3.7 KiB
C++
104 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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#ifndef _BASE_INCLUDE_COMPRESSIONFORMAT_H_
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#define _BASE_INCLUDE_COMPRESSIONFORMAT_H_
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#include "TexCompTypes.h"
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namespace FasTC {
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// The different supported compression formats
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enum ECompressionFormat {
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eCompressionFormat_DXT1,
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eCompressionFormat_DXT5,
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eCompressionFormat_ETC1,
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eCompressionFormat_BPTC,
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eCompressionFormat_PVRTC,
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kNumCompressionFormats
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};
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// Returns the dimensions of the blocks for the given format.
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inline static void GetBlockDimensions(ECompressionFormat fmt, uint32 (&outSz)[2]) {
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switch(fmt) {
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default:
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case eCompressionFormat_DXT1:
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case eCompressionFormat_DXT5:
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case eCompressionFormat_BPTC:
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case eCompressionFormat_PVRTC:
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case eCompressionFormat_ETC1:
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outSz[0] = 4;
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outSz[1] = 4;
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break;
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}
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}
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// Returns the size of the compressed block in bytes for the given format.
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inline static uint32 GetBlockSize(ECompressionFormat fmt) {
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switch(fmt) {
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default:
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case eCompressionFormat_DXT1:
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case eCompressionFormat_PVRTC:
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case eCompressionFormat_ETC1:
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return 8;
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break;
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case eCompressionFormat_DXT5:
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case eCompressionFormat_BPTC:
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return 16;
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}
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}
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} // namespace FasTC
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#endif // _BASE_INCLUDE_COMPRESSIONFORMAT_H_
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