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https://github.com/ZDoom/raze-gles.git
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142 lines
4.9 KiB
C++
142 lines
4.9 KiB
C++
/*
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** bitmap.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2008-2019 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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**
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*/
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#include <assert.h>
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#include "bitmap.h"
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//===========================================================================
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//
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// multi-format pixel copy with colormap application
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// requires the previously defined conversion classes to work
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//
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//===========================================================================
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template<class TSrc, class TDest, class TBlend>
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void iCopyColors(uint8_t *pout, const uint8_t *pin, int count, int step,
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uint8_t tr, uint8_t tg, uint8_t tb)
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{
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int i;
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int a;
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for(i=0;i<count;i++)
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{
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a = TSrc::A(pin, tr, tg, tb);
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if (TBlend::ProcessAlpha0() || a)
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{
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TBlend::OpC(pout[TDest::RED], TSrc::R(pin), a);
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TBlend::OpC(pout[TDest::GREEN], TSrc::G(pin), a);
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TBlend::OpC(pout[TDest::BLUE], TSrc::B(pin), a);
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TBlend::OpA(pout[TDest::ALPHA], a);
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}
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pout+=4;
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pin+=step;
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}
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}
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typedef void (*CopyFunc)(uint8_t *pout, const uint8_t *pin, int count, int step, uint8_t r, uint8_t g, uint8_t b);
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static const CopyFunc copyfuncs[]=
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{
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iCopyColors<cRGB, cBGRA, bCopy>,
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iCopyColors<cRGBT, cBGRA, bCopy>,
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iCopyColors<cRGBA, cBGRA, bCopy>,
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iCopyColors<cIA, cBGRA, bCopy>,
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iCopyColors<cCMYK, cBGRA, bCopy>,
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iCopyColors<cYCbCr, cBGRA, bCopy>,
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iCopyColors<cBGR, cBGRA, bCopy>,
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iCopyColors<cBGRA, cBGRA, bCopy>,
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iCopyColors<cI16, cBGRA, bCopy>,
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iCopyColors<cRGB555, cBGRA, bCopy>,
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iCopyColors<cPalEntry, cBGRA, bCopy>
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};
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//===========================================================================
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//
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// True Color texture copy function
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//
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//===========================================================================
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void FBitmap::CopyPixelDataRGB(int originx, int originy, const uint8_t *patch, int srcwidth,
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int srcheight, int step_x, int step_y, int rotate, int ct,
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int r, int g, int b)
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{
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uint8_t *buffer = data + 4 * originx + Pitch * originy;
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for (int y=0;y<srcheight;y++)
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{
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copyfuncs[ct](&buffer[y*Pitch], &patch[y*step_y], srcwidth, step_x, r, g, b);
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}
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}
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template<class TDest, class TBlend>
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void iCopyPaletted(uint8_t *buffer, const uint8_t * patch, int srcwidth, int srcheight, int Pitch,
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int step_x, int step_y, int rotate, PalEntry * palette)
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{
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int x,y,pos;
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for (y=0;y<srcheight;y++)
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{
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pos = y*Pitch;
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for (x=0;x<srcwidth;x++,pos+=4)
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{
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int v=(unsigned char)patch[y*step_y+x*step_x];
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int a = palette[v].a;
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if (TBlend::ProcessAlpha0() || a)
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{
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TBlend::OpC(buffer[pos + TDest::RED], palette[v].r, a);
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TBlend::OpC(buffer[pos + TDest::GREEN], palette[v].g, a);
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TBlend::OpC(buffer[pos + TDest::BLUE], palette[v].b, a);
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TBlend::OpA(buffer[pos + TDest::ALPHA], a);
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}
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}
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}
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}
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typedef void (*CopyPalettedFunc)(uint8_t *buffer, const uint8_t * patch, int srcwidth, int srcheight, int Pitch,
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int step_x, int step_y, int rotate, PalEntry * palette);
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//===========================================================================
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//
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// Paletted to True Color texture copy function
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//
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//===========================================================================
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void FBitmap::CopyPixelData(int originx, int originy, const uint8_t * patch, int srcwidth, int srcheight,
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int step_x, int step_y, int rotate, PalEntry * palette)
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{
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uint8_t *buffer = data + 4*originx + Pitch*originy;
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iCopyPaletted<cBGRA, bCopy>(buffer, patch, srcwidth, srcheight, Pitch,
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step_x, step_y, rotate, palette);
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}
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