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536 lines
15 KiB
C++
536 lines
15 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_translate.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(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *inf)
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{
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int i;
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int fac;
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BYTE 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);
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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_INVERSEMAP:
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// Doom's inverted invulnerability map
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for(i=0;i<count;i++)
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{
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a = TSrc::A(pin);
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if (TBlend::ProcessAlpha0() || a)
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{
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gray = clamp<int>(255 - TSrc::Gray(pin),0,255);
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TBlend::OpC(pout[TDest::RED], gray, a, inf);
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TBlend::OpC(pout[TDest::GREEN], gray, a, inf);
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TBlend::OpC(pout[TDest::BLUE], gray, 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_GOLDMAP:
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// Heretic's golden invulnerability map
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for(i=0;i<count;i++)
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{
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a = TSrc::A(pin);
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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=clamp<int>(gray+(gray>>1),0,255);
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g=clamp<int>(gray-(gray>>2),0,255);
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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], 0, 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_REDMAP:
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// Skulltag's red Doomsphere map
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for(i=0;i<count;i++)
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{
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a = TSrc::A(pin);
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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=clamp<int>(gray+(gray>>1),0,255);
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TBlend::OpC(pout[TDest::RED], r, a, inf);
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TBlend::OpC(pout[TDest::GREEN], 0, a, inf);
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TBlend::OpC(pout[TDest::BLUE], 0, 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_GREENMAP:
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// Skulltags's Guardsphere map
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for(i=0;i<count;i++)
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{
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a = TSrc::A(pin);
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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=clamp<int>(gray+(gray>>1),0,255);
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TBlend::OpC(pout[TDest::RED], r, a, inf);
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TBlend::OpC(pout[TDest::GREEN], r, a, inf);
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TBlend::OpC(pout[TDest::BLUE], gray, 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);
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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_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);
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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);
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if (TBlend::ProcessAlpha0() || a)
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{
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r = (TSrc::R(pin)*inf->blendcolor[0])>>FRACBITS;
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g = (TSrc::G(pin)*inf->blendcolor[1])>>FRACBITS;
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b = (TSrc::B(pin)*inf->blendcolor[2])>>FRACBITS;
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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);
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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]) >> FRACBITS;
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g = (TSrc::G(pin)*inf->blendcolor[3] + inf->blendcolor[1]) >> FRACBITS;
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b = (TSrc::B(pin)*inf->blendcolor[3] + inf->blendcolor[2]) >> FRACBITS;
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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)(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *inf);
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static const CopyFunc copyfuncs[][9]={
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{
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iCopyColors<cRGB, 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<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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iCopyColors<cRGB, cBGRA, bBlend>,
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iCopyColors<cRGBA, cBGRA, bBlend>,
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iCopyColors<cIA, cBGRA, bBlend>,
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iCopyColors<cCMYK, cBGRA, bBlend>,
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iCopyColors<cBGR, cBGRA, bBlend>,
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iCopyColors<cBGRA, cBGRA, bBlend>,
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iCopyColors<cI16, cBGRA, bBlend>,
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iCopyColors<cRGB555, cBGRA, bBlend>,
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iCopyColors<cPalEntry, cBGRA, bBlend>
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},
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{
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iCopyColors<cRGB, cBGRA, bAdd>,
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iCopyColors<cRGBA, cBGRA, bAdd>,
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iCopyColors<cIA, cBGRA, bAdd>,
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iCopyColors<cCMYK, cBGRA, bAdd>,
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iCopyColors<cBGR, cBGRA, bAdd>,
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iCopyColors<cBGRA, cBGRA, bAdd>,
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iCopyColors<cI16, cBGRA, bAdd>,
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iCopyColors<cRGB555, cBGRA, bAdd>,
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iCopyColors<cPalEntry, cBGRA, bAdd>
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},
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{
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iCopyColors<cRGB, cBGRA, bSubtract>,
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iCopyColors<cRGBA, cBGRA, bSubtract>,
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iCopyColors<cIA, cBGRA, bSubtract>,
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iCopyColors<cCMYK, cBGRA, bSubtract>,
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iCopyColors<cBGR, cBGRA, bSubtract>,
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iCopyColors<cBGRA, cBGRA, bSubtract>,
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iCopyColors<cI16, cBGRA, bSubtract>,
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iCopyColors<cRGB555, cBGRA, bSubtract>,
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iCopyColors<cPalEntry, cBGRA, bSubtract>
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},
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{
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iCopyColors<cRGB, cBGRA, bReverseSubtract>,
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iCopyColors<cRGBA, cBGRA, bReverseSubtract>,
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iCopyColors<cIA, cBGRA, bReverseSubtract>,
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iCopyColors<cCMYK, cBGRA, bReverseSubtract>,
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iCopyColors<cBGR, cBGRA, bReverseSubtract>,
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iCopyColors<cBGRA, cBGRA, bReverseSubtract>,
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iCopyColors<cI16, cBGRA, bReverseSubtract>,
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iCopyColors<cRGB555, cBGRA, bReverseSubtract>,
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iCopyColors<cPalEntry, cBGRA, bReverseSubtract>
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},
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{
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iCopyColors<cRGB, cBGRA, bModulate>,
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iCopyColors<cRGBA, cBGRA, bModulate>,
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iCopyColors<cIA, cBGRA, bModulate>,
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iCopyColors<cCMYK, cBGRA, bModulate>,
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iCopyColors<cBGR, cBGRA, bModulate>,
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iCopyColors<cBGRA, cBGRA, bModulate>,
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iCopyColors<cI16, cBGRA, bModulate>,
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iCopyColors<cRGB555, cBGRA, bModulate>,
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iCopyColors<cPalEntry, cBGRA, bModulate>
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},
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{
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iCopyColors<cRGB, cBGRA, bCopyAlpha>,
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iCopyColors<cRGBA, cBGRA, bCopyAlpha>,
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iCopyColors<cIA, cBGRA, bCopyAlpha>,
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iCopyColors<cCMYK, cBGRA, bCopyAlpha>,
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iCopyColors<cBGR, cBGRA, bCopyAlpha>,
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iCopyColors<cBGRA, cBGRA, bCopyAlpha>,
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iCopyColors<cI16, cBGRA, bCopyAlpha>,
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iCopyColors<cRGB555, cBGRA, bCopyAlpha>,
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iCopyColors<cPalEntry, cBGRA, bCopyAlpha>
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},
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{
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iCopyColors<cRGB, cBGRA, bOverwrite>,
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iCopyColors<cRGBA, cBGRA, bOverwrite>,
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iCopyColors<cIA, cBGRA, bOverwrite>,
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iCopyColors<cCMYK, cBGRA, bOverwrite>,
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iCopyColors<cBGR, cBGRA, bOverwrite>,
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iCopyColors<cBGRA, cBGRA, bOverwrite>,
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iCopyColors<cI16, cBGRA, bOverwrite>,
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iCopyColors<cRGB555, cBGRA, bOverwrite>,
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iCopyColors<cPalEntry, cBGRA, bOverwrite>
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},
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};
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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(int texwidth, int texheight, int &originx, int &originy,
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const BYTE *&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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// 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<0)
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{
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srcwidth+=originx;
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patch-=originx*step_x;
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originx=0;
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if (srcwidth<=0) return false;
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}
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if (originx+srcwidth>texwidth)
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{
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srcwidth=texwidth-originx;
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if (srcwidth<=0) return false;
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}
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if (originy<0)
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{
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srcheight+=originy;
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patch-=originy*step_y;
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originy=0;
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if (srcheight<=0) return false;
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}
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if (originy+srcheight>texheight)
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{
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srcheight=texheight-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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// 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 BYTE *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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{
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if (ClipCopyPixelRect(Width, Height, originx, originy, patch, srcwidth, srcheight, step_x, step_y, rotate))
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{
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BYTE *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);
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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(BYTE *buffer, const BYTE * patch, int srcwidth, int srcheight, int Pitch,
|
||
int step_x, int step_y, int rotate, PalEntry * palette, FCopyInfo *inf)
|
||
{
|
||
int x,y,pos;
|
||
|
||
for (y=0;y<srcheight;y++)
|
||
{
|
||
pos = y*Pitch;
|
||
for (x=0;x<srcwidth;x++,pos+=4)
|
||
{
|
||
int v=(unsigned char)patch[y*step_y+x*step_x];
|
||
int a = palette[v].a;
|
||
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
TBlend::OpC(buffer[pos + TDest::RED], palette[v].r, a, inf);
|
||
TBlend::OpC(buffer[pos + TDest::GREEN], palette[v].g, a, inf);
|
||
TBlend::OpC(buffer[pos + TDest::BLUE], palette[v].b, a, inf);
|
||
TBlend::OpA(buffer[pos + TDest::ALPHA], a, inf);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
typedef void (*CopyPalettedFunc)(BYTE *buffer, const BYTE * patch, int srcwidth, int srcheight, int Pitch,
|
||
int step_x, int step_y, int rotate, PalEntry * palette, FCopyInfo *inf);
|
||
|
||
|
||
static const CopyPalettedFunc copypalettedfuncs[]=
|
||
{
|
||
iCopyPaletted<cBGRA, bCopy>,
|
||
iCopyPaletted<cBGRA, bBlend>,
|
||
iCopyPaletted<cBGRA, bAdd>,
|
||
iCopyPaletted<cBGRA, bSubtract>,
|
||
iCopyPaletted<cBGRA, bReverseSubtract>,
|
||
iCopyPaletted<cBGRA, bModulate>,
|
||
iCopyPaletted<cBGRA, bCopyAlpha>,
|
||
iCopyPaletted<cBGRA, bOverwrite>
|
||
};
|
||
|
||
//===========================================================================
|
||
//
|
||
// Paletted to True Color texture copy function
|
||
//
|
||
//===========================================================================
|
||
void FBitmap::CopyPixelData(int originx, int originy, const BYTE * patch, int srcwidth, int srcheight,
|
||
int step_x, int step_y, int rotate, PalEntry * palette, FCopyInfo *inf)
|
||
{
|
||
if (ClipCopyPixelRect(Width, Height, originx, originy, patch, srcwidth, srcheight, step_x, step_y, rotate))
|
||
{
|
||
BYTE *buffer = data + 4*originx + Pitch*originy;
|
||
PalEntry penew[256];
|
||
|
||
if (inf && inf->blend)
|
||
{
|
||
iCopyColors<cPalEntry, cBGRA, bCopy>((BYTE*)penew, (const BYTE*)palette, 256, 4, inf);
|
||
palette = penew;
|
||
}
|
||
|
||
copypalettedfuncs[inf==NULL? OP_COPY : inf->op](buffer, patch, srcwidth, srcheight, Pitch,
|
||
step_x, step_y, rotate, palette, inf);
|
||
}
|
||
}
|
||
|