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7e169eb76f
Until now each subclass of FTexture had to implement the entire span generation itself, presumably so that a few classes can use simpler structures. This does not work if a texture can have more than one pixel buffer as is needed for alpha textures. Even though it means that some classes will allocate more data now, it's the only way to do it properly. In addition this removes a significant amount of mostly redundant code from the texture classes. - added alpha texture processing to all converted classes As of now this is not active and not tested. Note that as part of the conversion even those textures that were working as alphatextures will not look correct until the higher level code gets adjusted.
479 lines
13 KiB
C++
479 lines
13 KiB
C++
/*
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** bitmap.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2008 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 "bitmap.h"
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#include "templates.h"
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#include "r_data/r_translate.h"
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#include "v_palette.h"
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#include "r_data/colormaps.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, FCopyInfo *inf,
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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 fac;
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uint8_t r,g,b;
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int gray;
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int a;
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switch(inf? inf->blend : BLEND_NONE)
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{
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case BLEND_NONE:
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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, inf);
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TBlend::OpC(pout[TDest::GREEN], TSrc::G(pin), a, inf);
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TBlend::OpC(pout[TDest::BLUE], TSrc::B(pin), a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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}
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pout+=4;
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pin+=step;
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}
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break;
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case BLEND_ICEMAP:
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// Create the ice translation table, based on Hexen's.
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// Since this is done in True Color the purplish tint is fully preserved - even in Doom!
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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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int gray = TSrc::Gray(pin)>>4;
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TBlend::OpC(pout[TDest::RED], IcePalette[gray][0], a, inf);
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TBlend::OpC(pout[TDest::GREEN], IcePalette[gray][1], a, inf);
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TBlend::OpC(pout[TDest::BLUE], IcePalette[gray][2], a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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}
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pout+=4;
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pin+=step;
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}
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break;
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default:
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if (inf->blend >= BLEND_SPECIALCOLORMAP1)
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{
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FSpecialColormap *cm = &SpecialColormaps[inf->blend - BLEND_SPECIALCOLORMAP1];
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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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gray = clamp<int>(TSrc::Gray(pin),0,255);
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PalEntry pe = cm->GrayscaleToColor[gray];
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TBlend::OpC(pout[TDest::RED], pe.r , a, inf);
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TBlend::OpC(pout[TDest::GREEN], pe.g, a, inf);
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TBlend::OpC(pout[TDest::BLUE], pe.b, a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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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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else if (inf->blend >= BLEND_DESATURATE1 && inf->blend<=BLEND_DESATURATE31)
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{
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// Desaturated light settings.
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fac=inf->blend-BLEND_DESATURATE1+1;
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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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gray = TSrc::Gray(pin);
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r = (TSrc::R(pin)*(31-fac) + gray*fac)/31;
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g = (TSrc::G(pin)*(31-fac) + gray*fac)/31;
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b = (TSrc::B(pin)*(31-fac) + gray*fac)/31;
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TBlend::OpC(pout[TDest::RED], r, a, inf);
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TBlend::OpC(pout[TDest::GREEN], g, a, inf);
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TBlend::OpC(pout[TDest::BLUE], b, a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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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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break;
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case BLEND_MODULATE:
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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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r = (TSrc::R(pin)*inf->blendcolor[0])>>BLENDBITS;
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g = (TSrc::G(pin)*inf->blendcolor[1])>>BLENDBITS;
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b = (TSrc::B(pin)*inf->blendcolor[2])>>BLENDBITS;
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TBlend::OpC(pout[TDest::RED], r, a, inf);
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TBlend::OpC(pout[TDest::GREEN], g, a, inf);
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TBlend::OpC(pout[TDest::BLUE], b, a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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}
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pout+=4;
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pin+=step;
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}
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break;
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case BLEND_OVERLAY:
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for(i=0;i<count;i++)
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{
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// color blend
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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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r = (TSrc::R(pin)*inf->blendcolor[3] + inf->blendcolor[0]) >> BLENDBITS;
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g = (TSrc::G(pin)*inf->blendcolor[3] + inf->blendcolor[1]) >> BLENDBITS;
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b = (TSrc::B(pin)*inf->blendcolor[3] + inf->blendcolor[2]) >> BLENDBITS;
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TBlend::OpC(pout[TDest::RED], r, a, inf);
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TBlend::OpC(pout[TDest::GREEN], g, a, inf);
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TBlend::OpC(pout[TDest::BLUE], b, a, inf);
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TBlend::OpA(pout[TDest::ALPHA], a, inf);
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}
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pout+=4;
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pin+=step;
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}
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break;
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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, FCopyInfo *inf, uint8_t r, uint8_t g, uint8_t b);
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#define COPY_FUNCS(op) \
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{ \
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iCopyColors<cRGB, cBGRA, op>, \
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iCopyColors<cRGBT, cBGRA, op>, \
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iCopyColors<cRGBA, cBGRA, op>, \
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iCopyColors<cIA, cBGRA, op>, \
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iCopyColors<cCMYK, cBGRA, op>, \
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iCopyColors<cYCbCr, cBGRA, op>, \
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iCopyColors<cBGR, cBGRA, op>, \
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iCopyColors<cBGRA, cBGRA, op>, \
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iCopyColors<cI16, cBGRA, op>, \
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iCopyColors<cRGB555, cBGRA, op>, \
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iCopyColors<cPalEntry, cBGRA, op> \
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}
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static const CopyFunc copyfuncs[][11]={
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COPY_FUNCS(bCopy),
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COPY_FUNCS(bBlend),
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COPY_FUNCS(bAdd),
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COPY_FUNCS(bSubtract),
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COPY_FUNCS(bReverseSubtract),
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COPY_FUNCS(bModulate),
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COPY_FUNCS(bCopyAlpha),
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COPY_FUNCS(bCopyNewAlpha),
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COPY_FUNCS(bOverlay),
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COPY_FUNCS(bOverwrite)
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};
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#undef COPY_FUNCS
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//===========================================================================
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//
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// Clips the copy area for CopyPixelData functions
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//
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//===========================================================================
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bool ClipCopyPixelRect(const FClipRect *cr, int &originx, int &originy,
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const uint8_t *&patch, int &srcwidth, int &srcheight,
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int &pstep_x, int &pstep_y, int rotate)
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{
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int pixxoffset;
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int pixyoffset;
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int step_x;
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int step_y;
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assert(cr != NULL);
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// First adjust the settings for the intended rotation
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switch (rotate)
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{
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default:
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case 0: // normal
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pixxoffset = 0;
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pixyoffset = 0;
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step_x = pstep_x;
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step_y = pstep_y;
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break;
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case 1: // rotate 90<39> right
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pixxoffset = 0;
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pixyoffset = srcheight - 1;
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step_x = -pstep_y;
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step_y = pstep_x;
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break;
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case 2: // rotate 180<38>
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pixxoffset = srcwidth - 1;
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pixyoffset = srcheight - 1;
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step_x = -pstep_x;
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step_y = -pstep_y;
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break;
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case 3: // rotate 90<39> left
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pixxoffset = srcwidth - 1;
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pixyoffset = 0;
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step_x = pstep_y;
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step_y = -pstep_x;
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break;
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case 4: // flip horizontally
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pixxoffset = srcwidth - 1;
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pixyoffset = 0;
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step_x = -pstep_x;
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step_y = pstep_y;
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break;
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case 5: // flip horizontally and rotate 90<39> right
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pixxoffset = srcwidth - 1;
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pixyoffset = srcheight - 1;
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step_x = -pstep_y;
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step_y = -pstep_x;
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break;
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case 6: // flip vertically
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pixxoffset = 0;
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pixyoffset = srcheight - 1;
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step_x = pstep_x;
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step_y = -pstep_y;
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break;
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case 7: // flip horizontally and rotate 90<39> left
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pixxoffset = 0;
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pixyoffset = 0;
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step_x = pstep_y;
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step_y = pstep_x;
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break;
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}
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if (rotate&1)
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{
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int v = srcwidth;
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srcwidth = srcheight;
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srcheight = v;
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}
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patch += pixxoffset * pstep_x + pixyoffset * pstep_y;
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pstep_x = step_x;
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pstep_y = step_y;
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// clip source rectangle to destination
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if (originx < cr->x)
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{
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int skip = cr->x - originx;
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srcwidth -= skip;
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patch +=skip * step_x;
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originx = cr->x;
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if (srcwidth<=0) return false;
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}
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if (originx + srcwidth > cr->x + cr->width)
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{
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srcwidth = cr->x + cr->width - originx;
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if (srcwidth<=0) return false;
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}
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if (originy < cr->y)
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{
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int skip = cr->y - originy;
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srcheight -= skip;
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patch += skip*step_y;
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originy = cr->y;
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if (srcheight <= 0) return false;
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}
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if (originy + srcheight > cr->y + cr->height)
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{
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srcheight = cr->y + cr->height - originy;
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if (srcheight <= 0) return false;
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}
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return true;
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}
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//===========================================================================
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//
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//
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//
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//===========================================================================
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bool FClipRect::Intersect(int ix, int iy, int iw, int ih)
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{
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if (ix > x)
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{
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width -= (ix-x);
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x = ix;
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}
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else
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{
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iw -= (x-ix);
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}
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if (iy > y)
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{
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height -= (iy-y);
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y = iy;
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}
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else
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{
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ih -= (y-iy);
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}
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if (iw < width) width = iw;
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if (ih < height) height = ih;
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return width > 0 && height > 0;
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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, FCopyInfo *inf,
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int r, int g, int b)
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{
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if (ClipCopyPixelRect(&ClipRect, originx, originy, patch, srcwidth, srcheight, step_x, step_y, rotate))
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{
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uint8_t *buffer = data + 4 * originx + Pitch * originy;
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int op = inf==NULL? OP_COPY : inf->op;
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for (int y=0;y<srcheight;y++)
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{
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copyfuncs[op][ct](&buffer[y*Pitch], &patch[y*step_y], srcwidth, step_x, inf, r, g, b);
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}
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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, FCopyInfo *inf)
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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, inf);
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TBlend::OpC(buffer[pos + TDest::GREEN], palette[v].g, a, inf);
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TBlend::OpC(buffer[pos + TDest::BLUE], palette[v].b, a, inf);
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TBlend::OpA(buffer[pos + TDest::ALPHA], a, inf);
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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, FCopyInfo *inf);
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static const CopyPalettedFunc copypalettedfuncs[]=
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{
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iCopyPaletted<cBGRA, bCopy>,
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iCopyPaletted<cBGRA, bBlend>,
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iCopyPaletted<cBGRA, bAdd>,
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iCopyPaletted<cBGRA, bSubtract>,
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iCopyPaletted<cBGRA, bReverseSubtract>,
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iCopyPaletted<cBGRA, bModulate>,
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iCopyPaletted<cBGRA, bCopyAlpha>,
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iCopyPaletted<cBGRA, bCopyNewAlpha>,
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iCopyPaletted<cBGRA, bOverlay>,
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iCopyPaletted<cBGRA, bOverwrite>
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};
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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, FCopyInfo *inf)
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{
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if (ClipCopyPixelRect(&ClipRect, originx, originy, patch, srcwidth, srcheight, step_x, step_y, rotate))
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{
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uint8_t *buffer = data + 4*originx + Pitch*originy;
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PalEntry penew[256];
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memset(penew, 0, sizeof(penew));
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if (inf)
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{
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if (inf->blend)
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{
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iCopyColors<cPalEntry, cBGRA, bCopy>((uint8_t*)penew, (const uint8_t*)palette, 256, 4, inf, 0, 0, 0);
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palette = penew;
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}
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else if (inf->palette)
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{
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palette = inf->palette;
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}
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}
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copypalettedfuncs[inf==NULL? OP_COPY : inf->op](buffer, patch, srcwidth, srcheight, Pitch,
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step_x, step_y, rotate, palette, inf);
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}
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}
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//===========================================================================
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//
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// Clear buffer
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//
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//===========================================================================
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void FBitmap::Zero()
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{
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uint8_t *buffer = data;
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for (int y = ClipRect.y; y < ClipRect.height; ++y)
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{
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memset(buffer + ClipRect.x, 0, ClipRect.width*4);
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buffer += Pitch;
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}
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}
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