mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-07 21:41:42 +00:00
536 lines
15 KiB
C++
536 lines
15 KiB
C++
/*
|
||
** bitmap.cpp
|
||
**
|
||
**---------------------------------------------------------------------------
|
||
** Copyright 2008 Christoph Oelckers
|
||
** All rights reserved.
|
||
**
|
||
** Redistribution and use in source and binary forms, with or without
|
||
** modification, are permitted provided that the following conditions
|
||
** are met:
|
||
**
|
||
** 1. Redistributions of source code must retain the above copyright
|
||
** notice, this list of conditions and the following disclaimer.
|
||
** 2. Redistributions in binary form must reproduce the above copyright
|
||
** notice, this list of conditions and the following disclaimer in the
|
||
** documentation and/or other materials provided with the distribution.
|
||
** 3. The name of the author may not be used to endorse or promote products
|
||
** derived from this software without specific prior written permission.
|
||
**
|
||
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
**---------------------------------------------------------------------------
|
||
**
|
||
**
|
||
*/
|
||
|
||
#include "bitmap.h"
|
||
#include "templates.h"
|
||
#include "r_translate.h"
|
||
|
||
|
||
//===========================================================================
|
||
//
|
||
// multi-format pixel copy with colormap application
|
||
// requires the previously defined conversion classes to work
|
||
//
|
||
//===========================================================================
|
||
template<class TSrc, class TDest, class TBlend>
|
||
void iCopyColors(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *inf)
|
||
{
|
||
int i;
|
||
int fac;
|
||
BYTE r,g,b;
|
||
int gray;
|
||
int a;
|
||
|
||
switch(inf? inf->blend : BLEND_NONE)
|
||
{
|
||
case BLEND_NONE:
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
TBlend::OpC(pout[TDest::RED], TSrc::R(pin), a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], TSrc::G(pin), a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], TSrc::B(pin), a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_INVERSEMAP:
|
||
// Doom's inverted invulnerability map
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
gray = clamp<int>(255 - TSrc::Gray(pin),0,255);
|
||
|
||
TBlend::OpC(pout[TDest::RED], gray, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], gray, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], gray, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_GOLDMAP:
|
||
// Heretic's golden invulnerability map
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
gray = TSrc::Gray(pin);
|
||
r=clamp<int>(gray+(gray>>1),0,255);
|
||
g=clamp<int>(gray-(gray>>2),0,255);
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], g, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], 0, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_REDMAP:
|
||
// Skulltag's red Doomsphere map
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
gray = TSrc::Gray(pin);
|
||
r=clamp<int>(gray+(gray>>1),0,255);
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], 0, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], 0, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_GREENMAP:
|
||
// Skulltags's Guardsphere map
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
gray = TSrc::Gray(pin);
|
||
r=clamp<int>(gray+(gray>>1),0,255);
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], r, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], gray, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_ICEMAP:
|
||
// Create the ice translation table, based on Hexen's.
|
||
// Since this is done in True Color the purplish tint is fully preserved - even in Doom!
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
int gray = TSrc::Gray(pin)>>4;
|
||
|
||
TBlend::OpC(pout[TDest::RED], IcePalette[gray][0], a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], IcePalette[gray][1], a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], IcePalette[gray][2], a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
if (inf->blend >= BLEND_DESATURATE1 && inf->blend<=BLEND_DESATURATE31)
|
||
{
|
||
// Desaturated light settings.
|
||
fac=inf->blend-BLEND_DESATURATE1+1;
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
gray = TSrc::Gray(pin);
|
||
r = (TSrc::R(pin)*(31-fac) + gray*fac)/31;
|
||
g = (TSrc::G(pin)*(31-fac) + gray*fac)/31;
|
||
b = (TSrc::B(pin)*(31-fac) + gray*fac)/31;
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], g, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], b, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case BLEND_MODULATE:
|
||
for(i=0;i<count;i++)
|
||
{
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
r = (TSrc::R(pin)*inf->blendcolor[0])>>FRACBITS;
|
||
g = (TSrc::G(pin)*inf->blendcolor[1])>>FRACBITS;
|
||
b = (TSrc::B(pin)*inf->blendcolor[2])>>FRACBITS;
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], g, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], b, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
case BLEND_OVERLAY:
|
||
for(i=0;i<count;i++)
|
||
{
|
||
// color blend
|
||
a = TSrc::A(pin);
|
||
if (TBlend::ProcessAlpha0() || a)
|
||
{
|
||
r = (TSrc::R(pin)*inf->blendcolor[3] + inf->blendcolor[0]) >> FRACBITS;
|
||
g = (TSrc::G(pin)*inf->blendcolor[3] + inf->blendcolor[1]) >> FRACBITS;
|
||
b = (TSrc::B(pin)*inf->blendcolor[3] + inf->blendcolor[2]) >> FRACBITS;
|
||
|
||
TBlend::OpC(pout[TDest::RED], r, a, inf);
|
||
TBlend::OpC(pout[TDest::GREEN], g, a, inf);
|
||
TBlend::OpC(pout[TDest::BLUE], b, a, inf);
|
||
TBlend::OpA(pout[TDest::ALPHA], a, inf);
|
||
}
|
||
pout+=4;
|
||
pin+=step;
|
||
}
|
||
break;
|
||
|
||
}
|
||
}
|
||
|
||
typedef void (*CopyFunc)(BYTE *pout, const BYTE *pin, int count, int step, FCopyInfo *inf);
|
||
|
||
static const CopyFunc copyfuncs[][9]={
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bCopy>,
|
||
iCopyColors<cRGBA, cBGRA, bCopy>,
|
||
iCopyColors<cIA, cBGRA, bCopy>,
|
||
iCopyColors<cCMYK, cBGRA, bCopy>,
|
||
iCopyColors<cBGR, cBGRA, bCopy>,
|
||
iCopyColors<cBGRA, cBGRA, bCopy>,
|
||
iCopyColors<cI16, cBGRA, bCopy>,
|
||
iCopyColors<cRGB555, cBGRA, bCopy>,
|
||
iCopyColors<cPalEntry, cBGRA, bCopy>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bBlend>,
|
||
iCopyColors<cRGBA, cBGRA, bBlend>,
|
||
iCopyColors<cIA, cBGRA, bBlend>,
|
||
iCopyColors<cCMYK, cBGRA, bBlend>,
|
||
iCopyColors<cBGR, cBGRA, bBlend>,
|
||
iCopyColors<cBGRA, cBGRA, bBlend>,
|
||
iCopyColors<cI16, cBGRA, bBlend>,
|
||
iCopyColors<cRGB555, cBGRA, bBlend>,
|
||
iCopyColors<cPalEntry, cBGRA, bBlend>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bAdd>,
|
||
iCopyColors<cRGBA, cBGRA, bAdd>,
|
||
iCopyColors<cIA, cBGRA, bAdd>,
|
||
iCopyColors<cCMYK, cBGRA, bAdd>,
|
||
iCopyColors<cBGR, cBGRA, bAdd>,
|
||
iCopyColors<cBGRA, cBGRA, bAdd>,
|
||
iCopyColors<cI16, cBGRA, bAdd>,
|
||
iCopyColors<cRGB555, cBGRA, bAdd>,
|
||
iCopyColors<cPalEntry, cBGRA, bAdd>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bSubtract>,
|
||
iCopyColors<cRGBA, cBGRA, bSubtract>,
|
||
iCopyColors<cIA, cBGRA, bSubtract>,
|
||
iCopyColors<cCMYK, cBGRA, bSubtract>,
|
||
iCopyColors<cBGR, cBGRA, bSubtract>,
|
||
iCopyColors<cBGRA, cBGRA, bSubtract>,
|
||
iCopyColors<cI16, cBGRA, bSubtract>,
|
||
iCopyColors<cRGB555, cBGRA, bSubtract>,
|
||
iCopyColors<cPalEntry, cBGRA, bSubtract>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cRGBA, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cIA, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cCMYK, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cBGR, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cBGRA, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cI16, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cRGB555, cBGRA, bReverseSubtract>,
|
||
iCopyColors<cPalEntry, cBGRA, bReverseSubtract>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bModulate>,
|
||
iCopyColors<cRGBA, cBGRA, bModulate>,
|
||
iCopyColors<cIA, cBGRA, bModulate>,
|
||
iCopyColors<cCMYK, cBGRA, bModulate>,
|
||
iCopyColors<cBGR, cBGRA, bModulate>,
|
||
iCopyColors<cBGRA, cBGRA, bModulate>,
|
||
iCopyColors<cI16, cBGRA, bModulate>,
|
||
iCopyColors<cRGB555, cBGRA, bModulate>,
|
||
iCopyColors<cPalEntry, cBGRA, bModulate>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cRGBA, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cIA, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cCMYK, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cBGR, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cBGRA, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cI16, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cRGB555, cBGRA, bCopyAlpha>,
|
||
iCopyColors<cPalEntry, cBGRA, bCopyAlpha>
|
||
},
|
||
{
|
||
iCopyColors<cRGB, cBGRA, bOverwrite>,
|
||
iCopyColors<cRGBA, cBGRA, bOverwrite>,
|
||
iCopyColors<cIA, cBGRA, bOverwrite>,
|
||
iCopyColors<cCMYK, cBGRA, bOverwrite>,
|
||
iCopyColors<cBGR, cBGRA, bOverwrite>,
|
||
iCopyColors<cBGRA, cBGRA, bOverwrite>,
|
||
iCopyColors<cI16, cBGRA, bOverwrite>,
|
||
iCopyColors<cRGB555, cBGRA, bOverwrite>,
|
||
iCopyColors<cPalEntry, cBGRA, bOverwrite>
|
||
},
|
||
};
|
||
|
||
//===========================================================================
|
||
//
|
||
// Clips the copy area for CopyPixelData functions
|
||
//
|
||
//===========================================================================
|
||
bool ClipCopyPixelRect(int texwidth, int texheight, int &originx, int &originy,
|
||
const BYTE *&patch, int &srcwidth, int &srcheight,
|
||
int &pstep_x, int &pstep_y, int rotate)
|
||
{
|
||
int pixxoffset;
|
||
int pixyoffset;
|
||
|
||
int step_x;
|
||
int step_y;
|
||
|
||
// First adjust the settings for the intended rotation
|
||
switch (rotate)
|
||
{
|
||
default:
|
||
case 0: // normal
|
||
pixxoffset = 0;
|
||
pixyoffset = 0;
|
||
step_x = pstep_x;
|
||
step_y = pstep_y;
|
||
break;
|
||
|
||
case 1: // rotate 90<39> right
|
||
pixxoffset = 0;
|
||
pixyoffset = srcheight - 1;
|
||
step_x = -pstep_y;
|
||
step_y = pstep_x;
|
||
break;
|
||
|
||
case 2: // rotate 180<38>
|
||
pixxoffset = srcwidth - 1;
|
||
pixyoffset = srcheight - 1;
|
||
step_x = -pstep_x;
|
||
step_y = -pstep_y;
|
||
break;
|
||
|
||
case 3: // rotate 90<39> left
|
||
pixxoffset = srcwidth - 1;
|
||
pixyoffset = 0;
|
||
step_x = pstep_y;
|
||
step_y = -pstep_x;
|
||
break;
|
||
|
||
case 4: // flip horizontally
|
||
pixxoffset = srcwidth - 1;
|
||
pixyoffset = 0;
|
||
step_x = -pstep_x;
|
||
step_y = pstep_y;
|
||
break;
|
||
|
||
case 5: // flip horizontally and rotate 90<39> right
|
||
pixxoffset = srcwidth - 1;
|
||
pixyoffset = srcheight - 1;
|
||
step_x = -pstep_y;
|
||
step_y = -pstep_x;
|
||
break;
|
||
|
||
case 6: // flip vertically
|
||
pixxoffset = 0;
|
||
pixyoffset = srcheight - 1;
|
||
step_x = pstep_x;
|
||
step_y = -pstep_y;
|
||
break;
|
||
|
||
case 7: // flip horizontally and rotate 90<39> left
|
||
pixxoffset = 0;
|
||
pixyoffset = 0;
|
||
step_x = pstep_y;
|
||
step_y = pstep_x;
|
||
break;
|
||
}
|
||
if (rotate&1)
|
||
{
|
||
int v = srcwidth;
|
||
srcwidth = srcheight;
|
||
srcheight = v;
|
||
}
|
||
|
||
patch += pixxoffset * pstep_x + pixyoffset * pstep_y;
|
||
pstep_x = step_x;
|
||
pstep_y = step_y;
|
||
|
||
// clip source rectangle to destination
|
||
if (originx<0)
|
||
{
|
||
srcwidth+=originx;
|
||
patch-=originx*step_x;
|
||
originx=0;
|
||
if (srcwidth<=0) return false;
|
||
}
|
||
if (originx+srcwidth>texwidth)
|
||
{
|
||
srcwidth=texwidth-originx;
|
||
if (srcwidth<=0) return false;
|
||
}
|
||
|
||
if (originy<0)
|
||
{
|
||
srcheight+=originy;
|
||
patch-=originy*step_y;
|
||
originy=0;
|
||
if (srcheight<=0) return false;
|
||
}
|
||
if (originy+srcheight>texheight)
|
||
{
|
||
srcheight=texheight-originy;
|
||
if (srcheight<=0) return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
//===========================================================================
|
||
//
|
||
// True Color texture copy function
|
||
//
|
||
//===========================================================================
|
||
void FBitmap::CopyPixelDataRGB(int originx, int originy, const BYTE *patch, int srcwidth,
|
||
int srcheight, int step_x, int step_y, int rotate, int ct, FCopyInfo *inf)
|
||
{
|
||
if (ClipCopyPixelRect(Width, Height, originx, originy, patch, srcwidth, srcheight, step_x, step_y, rotate))
|
||
{
|
||
BYTE *buffer = data + 4 * originx + Pitch * originy;
|
||
int op = inf==NULL? OP_COPY : inf->op;
|
||
for (int y=0;y<srcheight;y++)
|
||
{
|
||
copyfuncs[op][ct](&buffer[y*Pitch], &patch[y*step_y], srcwidth, step_x, inf);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
template<class TDest, class TBlend>
|
||
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);
|
||
}
|
||
}
|
||
|