mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-18 18:31:43 +00:00
691 lines
16 KiB
C++
691 lines
16 KiB
C++
/*
|
|
** v_pfx.cpp
|
|
** Pixel format conversion routines
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 1998-2006 Randy Heit
|
|
** 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 "doomtype.h"
|
|
#include "i_system.h"
|
|
#include "v_palette.h"
|
|
#include "v_pfx.h"
|
|
|
|
extern "C"
|
|
{
|
|
PfxUnion GPfxPal;
|
|
PfxState GPfx;
|
|
}
|
|
|
|
static bool AnalyzeMask (DWORD mask, BYTE *shift);
|
|
|
|
static void Palette16Generic (const PalEntry *pal);
|
|
static void Palette16R5G5B5 (const PalEntry *pal);
|
|
static void Palette16R5G6B5 (const PalEntry *pal);
|
|
static void Palette32Generic (const PalEntry *pal);
|
|
static void Palette32RGB (const PalEntry *pal);
|
|
static void Palette32BGR (const PalEntry *pal);
|
|
|
|
static void Scale8 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
|
|
static void Convert8 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
|
|
static void Convert16 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
|
|
static void Convert24 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
|
|
static void Convert32 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
|
|
|
|
void PfxState::SetFormat (int bits, uint32 redMask, uint32 greenMask, uint32 blueMask)
|
|
{
|
|
switch (bits)
|
|
{
|
|
case -8:
|
|
Convert = Scale8;
|
|
SetPalette = NULL;
|
|
break;
|
|
|
|
case 8:
|
|
Convert = Convert8;
|
|
SetPalette = NULL;
|
|
break;
|
|
|
|
case 16:
|
|
if (redMask == 0x7c00 && greenMask == 0x03e0 && blueMask == 0x001f)
|
|
{
|
|
SetPalette = Palette16R5G5B5;
|
|
}
|
|
else if (redMask == 0xf800 && greenMask == 0x07e0 && blueMask == 0x001f)
|
|
{
|
|
SetPalette = Palette16R5G6B5;
|
|
}
|
|
else
|
|
{
|
|
SetPalette = Palette16Generic;
|
|
}
|
|
Convert = Convert16;
|
|
Masks.Bits16.Red = (WORD)redMask;
|
|
Masks.Bits16.Green = (WORD)greenMask;
|
|
Masks.Bits16.Blue = (WORD)blueMask;
|
|
break;
|
|
|
|
case 24:
|
|
if (redMask == 0xff0000 && greenMask == 0x00ff00 && blueMask == 0x0000ff)
|
|
{
|
|
SetPalette = Palette32RGB;
|
|
Convert = Convert24;
|
|
}
|
|
else if (redMask == 0x0000ff && greenMask == 0x00ff00 && blueMask == 0xff0000)
|
|
{
|
|
SetPalette = Palette32BGR;
|
|
Convert = Convert24;
|
|
}
|
|
else
|
|
{
|
|
I_FatalError ("24-bit displays are only supported if they are RGB or BGR");
|
|
};
|
|
break;
|
|
|
|
case 32:
|
|
if (redMask == 0xff0000 && greenMask == 0x00ff00 && blueMask == 0x0000ff)
|
|
{
|
|
SetPalette = Palette32RGB;
|
|
}
|
|
else if (redMask == 0x0000ff && greenMask == 0x00ff00 && blueMask == 0xff0000)
|
|
{
|
|
SetPalette = Palette32BGR;
|
|
}
|
|
else
|
|
{
|
|
SetPalette = Palette32Generic;
|
|
}
|
|
Convert = Convert32;
|
|
Masks.Bits32.Red = redMask;
|
|
Masks.Bits32.Green = greenMask;
|
|
Masks.Bits32.Blue = blueMask;
|
|
break;
|
|
|
|
default:
|
|
I_FatalError ("Can't draw to %d-bit displays", bits);
|
|
}
|
|
if (bits != 8 && bits != -8)
|
|
{
|
|
RedLeft = AnalyzeMask (redMask, &RedShift);
|
|
GreenLeft = AnalyzeMask (greenMask, &GreenShift);
|
|
BlueLeft = AnalyzeMask (blueMask, &BlueShift);
|
|
}
|
|
}
|
|
|
|
static bool AnalyzeMask (DWORD mask, BYTE *shiftout)
|
|
{
|
|
BYTE shift = 0;
|
|
|
|
if (mask >= 0xff)
|
|
{
|
|
while (mask > 0xff)
|
|
{
|
|
shift++;
|
|
mask >>= 1;
|
|
}
|
|
*shiftout = shift;
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
while (mask < 0xff)
|
|
{
|
|
shift++;
|
|
mask <<= 1;
|
|
}
|
|
*shiftout = shift;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Palette converters ------------------------------------------------------
|
|
|
|
static void Palette16Generic (const PalEntry *pal)
|
|
{
|
|
WORD *p16;
|
|
int i;
|
|
|
|
for (p16 = GPfxPal.Pal16, i = 256; i != 0; i--, pal++, p16++)
|
|
{
|
|
WORD rpart, gpart, bpart;
|
|
|
|
if (GPfx.RedLeft) rpart = pal->r << GPfx.RedShift;
|
|
else rpart = pal->r >> GPfx.RedShift;
|
|
|
|
if (GPfx.GreenLeft) gpart = pal->g << GPfx.GreenShift;
|
|
else gpart = pal->g >> GPfx.GreenShift;
|
|
|
|
if (GPfx.BlueLeft) bpart = pal->b << GPfx.BlueShift;
|
|
else bpart = pal->b >> GPfx.BlueShift;
|
|
|
|
*p16 = (rpart & GPfx.Masks.Bits16.Red) |
|
|
(gpart & GPfx.Masks.Bits16.Green) |
|
|
(bpart & GPfx.Masks.Bits16.Blue);
|
|
}
|
|
}
|
|
|
|
static void Palette16R5G5B5 (const PalEntry *pal)
|
|
{
|
|
WORD *p16;
|
|
int i;
|
|
|
|
for (p16 = GPfxPal.Pal16, i = 256; i != 0; i--, pal++, p16++)
|
|
{
|
|
*p16 = ((pal->r << 7) & 0x7c00) |
|
|
((pal->g << 2) & 0x03e0) |
|
|
((pal->b >> 3) & 0x001f);
|
|
}
|
|
}
|
|
|
|
static void Palette16R5G6B5 (const PalEntry *pal)
|
|
{
|
|
WORD *p16;
|
|
int i;
|
|
|
|
for (p16 = GPfxPal.Pal16, i = 256; i != 0; i--, pal++, p16++)
|
|
{
|
|
*p16 = ((pal->r << 8) & 0xf800) |
|
|
((pal->g << 3) & 0x07e0) |
|
|
((pal->b >> 3) & 0x001f);
|
|
}
|
|
}
|
|
|
|
static void Palette32Generic (const PalEntry *pal)
|
|
{
|
|
DWORD *p32;
|
|
int i;
|
|
|
|
for (p32 = GPfxPal.Pal32, i = 256; i != 0; i--, pal++, p32++)
|
|
{
|
|
DWORD rpart, gpart, bpart;
|
|
|
|
if (GPfx.RedLeft) rpart = pal->r << GPfx.RedShift;
|
|
else rpart = pal->r >> GPfx.RedShift;
|
|
|
|
if (GPfx.GreenLeft) gpart = pal->g << GPfx.GreenShift;
|
|
else gpart = pal->g >> GPfx.GreenShift;
|
|
|
|
if (GPfx.BlueLeft) bpart = pal->b << GPfx.BlueShift;
|
|
else bpart = pal->b >> GPfx.BlueShift;
|
|
|
|
*p32 = (rpart & GPfx.Masks.Bits32.Red) |
|
|
(gpart & GPfx.Masks.Bits32.Green) |
|
|
(bpart & GPfx.Masks.Bits32.Blue);
|
|
}
|
|
}
|
|
|
|
static void Palette32RGB (const PalEntry *pal)
|
|
{
|
|
memcpy (GPfxPal.Pal32, pal, 256*4);
|
|
}
|
|
|
|
static void Palette32BGR (const PalEntry *pal)
|
|
{
|
|
DWORD *p32;
|
|
int i;
|
|
|
|
for (p32 = GPfxPal.Pal32, i = 256; i != 0; i--, pal++, p32++)
|
|
{
|
|
*p32 = (pal->r) | (pal->g << 8) | (pal->b << 16);
|
|
}
|
|
}
|
|
|
|
// Bitmap converters -------------------------------------------------------
|
|
|
|
static void Scale8 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac)
|
|
{
|
|
if ((destwidth | destheight) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int x, y, savedx;
|
|
BYTE *dest = (BYTE *)destin;
|
|
|
|
if (xstep == FRACUNIT && ystep == FRACUNIT)
|
|
{
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
memcpy(dest, src, destwidth);
|
|
dest += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else if (xstep == FRACUNIT/2 && ystep == FRACUNIT/2)
|
|
{
|
|
BYTE *dest2 = dest + destpitch;
|
|
destpitch = destpitch * 2 - destwidth;
|
|
srcpitch -= destwidth / 2;
|
|
for (y = destheight / 2; y != 0; --y)
|
|
{
|
|
for (x = destwidth / 2; x != 0; --x)
|
|
{
|
|
BYTE foo = src[0];
|
|
dest[0] = foo;
|
|
dest[1] = foo;
|
|
dest2[0] = foo;
|
|
dest2[1] = foo;
|
|
dest += 2;
|
|
dest2 += 2;
|
|
src += 1;
|
|
}
|
|
dest += destpitch;
|
|
dest2 += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else if (xstep == FRACUNIT/4 && ystep == FRACUNIT/4)
|
|
{
|
|
int gap = destpitch * 4 - destwidth;
|
|
srcpitch -= destwidth / 4;
|
|
for (y = destheight / 4; y != 0; --y)
|
|
{
|
|
for (BYTE *end = dest + destpitch; dest != end; dest += 4)
|
|
{
|
|
BYTE foo = src[0];
|
|
dest[0] = foo;
|
|
dest[1] = foo;
|
|
dest[2] = foo;
|
|
dest[3] = foo;
|
|
dest[0 + destpitch] = foo;
|
|
dest[1 + destpitch] = foo;
|
|
dest[2 + destpitch] = foo;
|
|
dest[3 + destpitch] = foo;
|
|
dest[0 + destpitch*2] = foo;
|
|
dest[1 + destpitch*2] = foo;
|
|
dest[2 + destpitch*2] = foo;
|
|
dest[3 + destpitch*2] = foo;
|
|
dest[0 + destpitch*3] = foo;
|
|
dest[1 + destpitch*3] = foo;
|
|
dest[2 + destpitch*3] = foo;
|
|
dest[3 + destpitch*3] = foo;
|
|
src += 1;
|
|
}
|
|
dest += gap;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
destpitch -= destwidth;
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
fixed_t xf = xfrac;
|
|
x = destwidth;
|
|
while (((size_t)dest & 3) && x != 0)
|
|
{
|
|
*dest++ = src[xf >> FRACBITS];
|
|
xf += xstep;
|
|
x--;
|
|
}
|
|
for (savedx = x, x >>= 2; x != 0; x--)
|
|
{
|
|
DWORD work;
|
|
|
|
#ifdef __BIG_ENDIAN__
|
|
work = src[xf >> FRACBITS] << 24; xf += xstep;
|
|
work |= src[xf >> FRACBITS] << 16; xf += xstep;
|
|
work |= src[xf >> FRACBITS] << 8; xf += xstep;
|
|
work |= src[xf >> FRACBITS]; xf += xstep;
|
|
#else
|
|
work = src[xf >> FRACBITS]; xf += xstep;
|
|
work |= src[xf >> FRACBITS] << 8; xf += xstep;
|
|
work |= src[xf >> FRACBITS] << 16; xf += xstep;
|
|
work |= src[xf >> FRACBITS] << 24; xf += xstep;
|
|
#endif
|
|
*(DWORD *)dest = work;
|
|
dest += 4;
|
|
}
|
|
for (savedx &= 3; savedx != 0; savedx--, xf += xstep)
|
|
{
|
|
*dest++ = src[xf >> FRACBITS];
|
|
}
|
|
yfrac += ystep;
|
|
while (yfrac >= FRACUNIT)
|
|
{
|
|
yfrac -= FRACUNIT;
|
|
src += srcpitch;
|
|
}
|
|
dest += destpitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Convert8 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac)
|
|
{
|
|
if ((destwidth | destheight) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int x, y, savedx;
|
|
BYTE *dest = (BYTE *)destin;
|
|
|
|
destpitch -= destwidth;
|
|
if (xstep == FRACUNIT && ystep == FRACUNIT)
|
|
{
|
|
srcpitch -= destwidth;
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
x = destwidth;
|
|
while (((size_t)dest & 3) && x != 0)
|
|
{
|
|
*dest++ = GPfxPal.Pal8[*src++];
|
|
x--;
|
|
}
|
|
for (savedx = x, x >>= 2; x != 0; x--)
|
|
{
|
|
*(DWORD *)dest =
|
|
#ifdef __BIG_ENDIAN__
|
|
(GPfxPal.Pal8[src[0]] << 24) |
|
|
(GPfxPal.Pal8[src[1]] << 16) |
|
|
(GPfxPal.Pal8[src[2]] << 8) |
|
|
(GPfxPal.Pal8[src[3]]);
|
|
#else
|
|
(GPfxPal.Pal8[src[0]]) |
|
|
(GPfxPal.Pal8[src[1]] << 8) |
|
|
(GPfxPal.Pal8[src[2]] << 16) |
|
|
(GPfxPal.Pal8[src[3]] << 24);
|
|
#endif
|
|
dest += 4;
|
|
src += 4;
|
|
}
|
|
for (savedx &= 3; savedx != 0; savedx--)
|
|
{
|
|
*dest++ = GPfxPal.Pal8[*src++];
|
|
}
|
|
dest += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
fixed_t xf = xfrac;
|
|
x = destwidth;
|
|
while (((size_t)dest & 3) && x != 0)
|
|
{
|
|
*dest++ = GPfxPal.Pal8[src[xf >> FRACBITS]];
|
|
xf += xstep;
|
|
x--;
|
|
}
|
|
for (savedx = x, x >>= 2; x != 0; x--)
|
|
{
|
|
DWORD work;
|
|
|
|
#ifdef __BIG_ENDIAN__
|
|
work = GPfxPal.Pal8[src[xf >> FRACBITS]] << 24; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]] << 16; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]] << 8; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]]; xf += xstep;
|
|
#else
|
|
work = GPfxPal.Pal8[src[xf >> FRACBITS]]; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]] << 8; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]] << 16; xf += xstep;
|
|
work |= GPfxPal.Pal8[src[xf >> FRACBITS]] << 24; xf += xstep;
|
|
#endif
|
|
*(DWORD *)dest = work;
|
|
dest += 4;
|
|
}
|
|
for (savedx &= 3; savedx != 0; savedx--, xf += xstep)
|
|
{
|
|
*dest++ = GPfxPal.Pal8[src[xf >> FRACBITS]];
|
|
}
|
|
yfrac += ystep;
|
|
while (yfrac >= FRACUNIT)
|
|
{
|
|
yfrac -= FRACUNIT;
|
|
src += srcpitch;
|
|
}
|
|
dest += destpitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Convert16 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac)
|
|
{
|
|
if ((destwidth | destheight) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int x, y, savedx;
|
|
WORD *dest = (WORD *)destin;
|
|
|
|
destpitch = (destpitch >> 1) - destwidth;
|
|
if (xstep == FRACUNIT && ystep == FRACUNIT)
|
|
{
|
|
srcpitch -= destwidth;
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
x = destwidth;
|
|
if ((size_t)dest & 1)
|
|
{
|
|
x--;
|
|
*dest++ = GPfxPal.Pal16[*src++];
|
|
}
|
|
for (savedx = x, x >>= 1; x != 0; x--)
|
|
{
|
|
*(DWORD *)dest =
|
|
#ifdef __BIG_ENDIAN__
|
|
(GPfxPal.Pal16[src[0]] << 16) |
|
|
(GPfxPal.Pal16[src[1]]);
|
|
#else
|
|
(GPfxPal.Pal16[src[0]]) |
|
|
(GPfxPal.Pal16[src[1]] << 16);
|
|
#endif
|
|
dest += 2;
|
|
src += 2;
|
|
}
|
|
if (savedx & 1)
|
|
{
|
|
*dest++ = GPfxPal.Pal16[*src++];
|
|
}
|
|
dest += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
fixed_t xf = xfrac;
|
|
x = destwidth;
|
|
if ((size_t)dest & 1)
|
|
{
|
|
*dest++ = GPfxPal.Pal16[src[xf >> FRACBITS]];
|
|
xf += xstep;
|
|
x--;
|
|
}
|
|
for (savedx = x, x >>= 1; x != 0; x--)
|
|
{
|
|
DWORD work;
|
|
|
|
#ifdef __BIG_ENDIAN__
|
|
work = GPfxPal.Pal16[src[xf >> FRACBITS]] << 16; xf += xstep;
|
|
work |= GPfxPal.Pal16[src[xf >> FRACBITS]]; xf += xstep;
|
|
#else
|
|
work = GPfxPal.Pal16[src[xf >> FRACBITS]]; xf += xstep;
|
|
work |= GPfxPal.Pal16[src[xf >> FRACBITS]] << 16; xf += xstep;
|
|
#endif
|
|
*(DWORD *)dest = work;
|
|
dest += 2;
|
|
}
|
|
if (savedx & 1)
|
|
{
|
|
*dest++ = GPfxPal.Pal16[src[xf >> FRACBITS]];
|
|
}
|
|
yfrac += ystep;
|
|
while (yfrac >= FRACUNIT)
|
|
{
|
|
yfrac -= FRACUNIT;
|
|
src += srcpitch;
|
|
}
|
|
dest += destpitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Convert24 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac)
|
|
{
|
|
if ((destwidth | destheight) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int x, y;
|
|
BYTE *dest = (BYTE *)destin;
|
|
|
|
destpitch = destpitch - destwidth*3;
|
|
if (xstep == FRACUNIT && ystep == FRACUNIT)
|
|
{
|
|
srcpitch -= destwidth;
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
for (x = destwidth; x != 0; x--)
|
|
{
|
|
BYTE *pe = GPfxPal.Pal24[src[0]];
|
|
dest[0] = pe[0];
|
|
dest[1] = pe[1];
|
|
dest[2] = pe[2];
|
|
dest += 3;
|
|
src++;
|
|
}
|
|
dest += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
fixed_t xf = xfrac;
|
|
for (x = destwidth; x != 0; x--)
|
|
{
|
|
BYTE *pe = GPfxPal.Pal24[src[xf >> FRACBITS]];
|
|
dest[0] = pe[0];
|
|
dest[1] = pe[1];
|
|
dest[2] = pe[2];
|
|
xf += xstep;
|
|
dest += 2;
|
|
}
|
|
yfrac += ystep;
|
|
while (yfrac >= FRACUNIT)
|
|
{
|
|
yfrac -= FRACUNIT;
|
|
src += srcpitch;
|
|
}
|
|
dest += destpitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void Convert32 (BYTE *src, int srcpitch,
|
|
void *destin, int destpitch, int destwidth, int destheight,
|
|
fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac)
|
|
{
|
|
if ((destwidth | destheight) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
int x, y, savedx;
|
|
DWORD *dest = (DWORD *)destin;
|
|
|
|
destpitch = (destpitch >> 2) - destwidth;
|
|
if (xstep == FRACUNIT && ystep == FRACUNIT)
|
|
{
|
|
srcpitch -= destwidth;
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
for (savedx = x = destwidth, x >>= 3; x != 0; x--)
|
|
{
|
|
dest[0] = GPfxPal.Pal32[src[0]];
|
|
dest[1] = GPfxPal.Pal32[src[1]];
|
|
dest[2] = GPfxPal.Pal32[src[2]];
|
|
dest[3] = GPfxPal.Pal32[src[3]];
|
|
dest[4] = GPfxPal.Pal32[src[4]];
|
|
dest[5] = GPfxPal.Pal32[src[5]];
|
|
dest[6] = GPfxPal.Pal32[src[6]];
|
|
dest[7] = GPfxPal.Pal32[src[7]];
|
|
dest += 8;
|
|
src += 8;
|
|
}
|
|
for (x = savedx & 7; x != 0; x--)
|
|
{
|
|
*dest++ = GPfxPal.Pal32[*src++];
|
|
}
|
|
dest += destpitch;
|
|
src += srcpitch;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (y = destheight; y != 0; y--)
|
|
{
|
|
fixed_t xf = xfrac;
|
|
for (savedx = x = destwidth, x >>= 1; x != 0; x--)
|
|
{
|
|
dest[0] = GPfxPal.Pal32[src[xf >> FRACBITS]]; xf += xstep;
|
|
dest[1] = GPfxPal.Pal32[src[xf >> FRACBITS]]; xf += xstep;
|
|
dest += 2;
|
|
}
|
|
if (savedx & 1)
|
|
{
|
|
*dest++ = GPfxPal.Pal32[src[xf >> FRACBITS]];
|
|
}
|
|
yfrac += ystep;
|
|
while (yfrac >= FRACUNIT)
|
|
{
|
|
yfrac -= FRACUNIT;
|
|
src += srcpitch;
|
|
}
|
|
dest += destpitch;
|
|
}
|
|
}
|
|
}
|