mirror of
https://github.com/yuzu-emu/FasTC
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247 lines
8.1 KiB
C++
Executable file
247 lines
8.1 KiB
C++
Executable file
/* FasTC
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* Copyright (c) 2014 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 __COMPRESSION_JOBS_H__
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#define __COMPRESSION_JOBS_H__
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#include "TexCompTypes.h"
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#include "CompressionFormat.h"
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#ifdef _MSC_VER
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# define ALIGN(x) __declspec( align(x) )
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#else
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# define ALIGN(x) __attribute__((aligned(x)))
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#endif
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#define ALIGN_SSE ALIGN(16)
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namespace FasTC {
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// This structure defines a compression job. Here, width and height are the dimensions
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// of the image in pixels. inBuf contains the R8G8B8A8 data that is to be compressed, and
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// outBuf will contain the compressed BPTC data.
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//
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// Implicit sizes:
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// inBuf - (width * height * 4) bytes
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// outBuf - (width * height) bytes
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class CompressionJob {
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private:
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ECompressionFormat m_Format;
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const uint8 *m_InBuf;
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uint8 *m_OutBuf;
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uint32 m_Width;
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uint32 m_Height;
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uint32 m_XStart, m_XEnd;
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uint32 m_YStart, m_YEnd;
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public:
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ECompressionFormat Format() const { return m_Format; }
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const uint8 *InBuf() const { return m_InBuf; }
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uint8 *OutBuf() const { return m_OutBuf; }
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uint32 Width() const { return m_Width; }
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uint32 Height() const { return m_Height; }
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uint32 XStart() const { return m_XStart; }
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uint32 XEnd() const { return m_XEnd; }
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uint32 YStart() const { return m_YStart; }
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uint32 YEnd() const { return m_YEnd; }
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CompressionJob(
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ECompressionFormat _fmt,
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const uint8 *_inBuf,
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unsigned char *_outBuf,
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const uint32 _width,
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const uint32 _height)
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: m_Format(_fmt)
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, m_InBuf(_inBuf)
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, m_OutBuf(_outBuf)
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, m_Width(_width)
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, m_Height(_height)
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, m_XStart(0), m_XEnd(_width)
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, m_YStart(0), m_YEnd(_height)
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{ }
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CompressionJob(
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ECompressionFormat _fmt,
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const uint8 *_inBuf,
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unsigned char *_outBuf,
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const uint32 _width,
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const uint32 _height,
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const uint32 _xOffset,
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const uint32 _yOffset)
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: m_Format(_fmt)
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, m_InBuf(_inBuf)
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, m_OutBuf(_outBuf)
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, m_Width(_width)
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, m_Height(_height)
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, m_XStart(_xOffset), m_XEnd(_width)
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, m_YStart(_yOffset), m_YEnd(_height)
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{ }
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CompressionJob(
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ECompressionFormat _fmt,
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const uint8 *_inBuf,
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unsigned char *_outBuf,
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const uint32 _width,
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const uint32 _height,
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const uint32 _xOffset,
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const uint32 _yOffset,
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const uint32 _xEndpoint,
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const uint32 _yEndpoint)
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: m_Format(_fmt)
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, m_InBuf(_inBuf)
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, m_OutBuf(_outBuf)
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, m_Width(_width)
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, m_Height(_height)
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, m_XStart(_xOffset), m_XEnd(_xEndpoint)
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, m_YStart(_yOffset), m_YEnd(_yEndpoint)
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{ }
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// Returns the x and y coordinates of the pixels that corresponds to the block
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// index for the given format.
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void BlockIdxToCoords(uint32 blockIdx, uint32 (&out)[2]) const {
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uint32 blockDim[2];
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GetBlockDimensions(Format(), blockDim);
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const uint32 kNumBlocksX = Width() / blockDim[0];
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const uint32 blockX = blockIdx % kNumBlocksX;
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const uint32 blockY = blockIdx / kNumBlocksX;
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out[0] = blockX * blockDim[0];
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out[1] = blockY * blockDim[1];
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}
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// Returns the x and y coordinates of the pixels that corresponds to the block
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// index for the given format.
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uint32 CoordsToBlockIdx(uint32 x, uint32 y) const {
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uint32 blockDim[2];
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GetBlockDimensions(Format(), blockDim);
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const uint32 kNumBlocksX = Width() / blockDim[0];
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const uint32 blockX = x / blockDim[0];
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const uint32 blockY = y / blockDim[1];
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return blockY * kNumBlocksX + blockX;
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}
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};
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// This struct mirrors that for a compression job, but is used to decompress a BPTC stream. Here, inBuf
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// is a buffer of BPTC data, and outBuf is the destination where we will copy the decompressed R8G8B8A8 data
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class DecompressionJob {
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private:
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const ECompressionFormat m_Format;
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const uint8 *m_InBuf;
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uint8 *m_OutBuf;
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const uint32 m_Width;
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const uint32 m_Height;
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public:
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const uint8 *InBuf() const { return m_InBuf; }
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uint8 *OutBuf() const { return m_OutBuf; }
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uint32 Width() const { return m_Width; }
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uint32 Height() const { return m_Height; }
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ECompressionFormat Format() const { return m_Format; }
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DecompressionJob(
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ECompressionFormat _fmt,
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const uint8 *_inBuf, uint8 *_outBuf,
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uint32 _width, uint32 _height)
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: m_Format(_fmt)
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, m_InBuf(_inBuf)
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, m_OutBuf(_outBuf)
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, m_Width(_width)
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, m_Height(_height)
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{ }
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};
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// A structure for maintaining a list of textures to compress.
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class CompressionJobList {
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public:
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// Initialize the list by specifying the total number of jobs that it will contain.
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// This constructor allocates the necessary memory to hold the array.
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CompressionJobList(const uint32 nJobs);
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~CompressionJobList();
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// Overrides to deal with memory management.
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CompressionJobList(const CompressionJobList &);
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CompressionJobList &operator =(const CompressionJobList &);
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// Add a job to the list. This function returns false on failure.
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bool AddJob(const CompressionJob &);
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// Get the maximum number of jobs that this list can hold.
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uint32 GetTotalNumJobs() const { return m_TotalNumJobs; }
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// Get the current number of jobs in the list.
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uint32 GetNumJobs() const { return m_NumJobs; }
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// Returns the specified job.
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const CompressionJob *GetJob(uint32 idx) const;
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uint32 *GetFinishedFlag(uint32 idx) const;
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private:
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CompressionJob *m_Jobs;
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uint32 m_NumJobs;
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const uint32 m_TotalNumJobs;
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struct FinishedFlag{
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ALIGN(32) uint32 m_flag;
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} *m_FinishedFlags;
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public:
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ALIGN(32) uint32 m_CurrentJobIndex;
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ALIGN(32) uint32 m_CurrentBlockIndex;
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};
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} // namespace FasTC
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#endif // __COMPRESSION_JOBS_H__
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