279 lines
8.9 KiB
C
279 lines
8.9 KiB
C
/*
|
|
* Copyright 2000 Marcus Meissner
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "ddraw_private.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
|
|
|
|
/* *************************************
|
|
16 / 15 bpp to palettized 8 bpp
|
|
************************************* */
|
|
static void pixel_convert_16_to_8(void *src, void *dst, DWORD width, DWORD height, LONG pitch, IDirectDrawPaletteImpl* palette) {
|
|
unsigned char *c_src = (unsigned char *) src;
|
|
unsigned short *c_dst = (unsigned short *) dst;
|
|
int y;
|
|
|
|
if (palette != NULL) {
|
|
const unsigned int * pal = (unsigned int *) palette->screen_palents;
|
|
|
|
for (y = height; y--; ) {
|
|
#if defined(__i386__) && defined(__GNUC__)
|
|
/* gcc generates slightly inefficient code for the the copy/lookup,
|
|
* it generates one excess memory access (to pal) per pixel. Since
|
|
* we know that pal is not modified by the memory write we can
|
|
* put it into a register and reduce the number of memory accesses
|
|
* from 4 to 3 pp. There are two xor eax,eax to avoid pipeline
|
|
* stalls. (This is not guaranteed to be the fastest method.)
|
|
*/
|
|
__asm__ __volatile__(
|
|
"xor %%eax,%%eax\n"
|
|
"1:\n"
|
|
" lodsb\n"
|
|
" movw (%%edx,%%eax,4),%%ax\n"
|
|
" stosw\n"
|
|
" xor %%eax,%%eax\n"
|
|
" loop 1b\n"
|
|
: "=S" (c_src), "=D" (c_dst)
|
|
: "S" (c_src), "D" (c_dst) , "c" (width), "d" (pal)
|
|
: "eax", "cc", "memory"
|
|
);
|
|
c_src+=(pitch-width);
|
|
#else
|
|
unsigned char * srclineend = c_src+width;
|
|
while (c_src < srclineend)
|
|
*c_dst++ = pal[*c_src++];
|
|
c_src+=(pitch-width);
|
|
#endif
|
|
}
|
|
} else {
|
|
FIXME("No palette set...\n");
|
|
memset(dst, 0, width * height * 2);
|
|
}
|
|
}
|
|
static void palette_convert_16_to_8(
|
|
LPPALETTEENTRY palent, void *screen_palette, DWORD start, DWORD count
|
|
) {
|
|
int i;
|
|
unsigned int *pal = (unsigned int *) screen_palette;
|
|
|
|
for (i = 0; i < count; i++)
|
|
pal[start + i] = (((((unsigned short) palent[i].peRed) & 0xF8) << 8) |
|
|
((((unsigned short) palent[i].peBlue) & 0xF8) >> 3) |
|
|
((((unsigned short) palent[i].peGreen) & 0xFC) << 3));
|
|
}
|
|
|
|
static void palette_convert_15_to_8(
|
|
LPPALETTEENTRY palent, void *screen_palette, DWORD start, DWORD count
|
|
) {
|
|
int i;
|
|
unsigned int *pal = (unsigned int *) screen_palette;
|
|
|
|
for (i = 0; i < count; i++)
|
|
pal[start + i] = (((((unsigned short) palent[i].peRed) & 0xF8) << 7) |
|
|
((((unsigned short) palent[i].peBlue) & 0xF8) >> 3) |
|
|
((((unsigned short) palent[i].peGreen) & 0xF8) << 2));
|
|
}
|
|
|
|
/* *************************************
|
|
24 to palettized 8 bpp
|
|
************************************* */
|
|
static void pixel_convert_24_to_8(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned char *c_src = (unsigned char *) src;
|
|
unsigned char *c_dst = (unsigned char *) dst;
|
|
int y;
|
|
|
|
if (palette != NULL) {
|
|
const unsigned int *pal = (unsigned int *) palette->screen_palents;
|
|
|
|
for (y = height; y--; ) {
|
|
unsigned char * srclineend = c_src+width;
|
|
while (c_src < srclineend ) {
|
|
register long pixel = pal[*c_src++];
|
|
*c_dst++ = pixel;
|
|
*c_dst++ = pixel>>8;
|
|
*c_dst++ = pixel>>16;
|
|
}
|
|
c_src+=(pitch-width);
|
|
}
|
|
} else {
|
|
FIXME("No palette set...\n");
|
|
memset(dst, 0, width * height * 3);
|
|
}
|
|
}
|
|
|
|
/* *************************************
|
|
32 bpp to palettized 8 bpp
|
|
************************************* */
|
|
static void pixel_convert_32_to_8(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned char *c_src = (unsigned char *) src;
|
|
unsigned int *c_dst = (unsigned int *) dst;
|
|
int y;
|
|
|
|
if (palette != NULL) {
|
|
const unsigned int *pal = (unsigned int *) palette->screen_palents;
|
|
|
|
for (y = height; y--; ) {
|
|
#if defined(__i386__) && defined(__GNUC__)
|
|
/* See comment in pixel_convert_16_to_8 */
|
|
__asm__ __volatile__(
|
|
"xor %%eax,%%eax\n"
|
|
"1:\n"
|
|
" lodsb\n"
|
|
" movl (%%edx,%%eax,4),%%eax\n"
|
|
" stosl\n"
|
|
" xor %%eax,%%eax\n"
|
|
" loop 1b\n"
|
|
: "=S" (c_src), "=D" (c_dst)
|
|
: "S" (c_src), "D" (c_dst) , "c" (width), "d" (pal)
|
|
: "eax", "cc", "memory"
|
|
);
|
|
c_src+=(pitch-width);
|
|
#else
|
|
unsigned char * srclineend = c_src+width;
|
|
while (c_src < srclineend )
|
|
*c_dst++ = pal[*c_src++];
|
|
c_src+=(pitch-width);
|
|
#endif
|
|
}
|
|
} else {
|
|
FIXME("No palette set...\n");
|
|
memset(dst, 0, width * height * 4);
|
|
}
|
|
}
|
|
|
|
static void palette_convert_24_to_8(
|
|
LPPALETTEENTRY palent, void *screen_palette, DWORD start, DWORD count
|
|
) {
|
|
int i;
|
|
unsigned int *pal = (unsigned int *) screen_palette;
|
|
|
|
for (i = 0; i < count; i++)
|
|
pal[start + i] = ((((unsigned int) palent[i].peRed) << 16) |
|
|
(((unsigned int) palent[i].peGreen) << 8) |
|
|
((unsigned int) palent[i].peBlue));
|
|
}
|
|
|
|
/* *************************************
|
|
16 bpp to 15 bpp
|
|
************************************* */
|
|
static void pixel_convert_15_to_16(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned short *c_src = (unsigned short *) src;
|
|
unsigned short *c_dst = (unsigned short *) dst;
|
|
int y;
|
|
|
|
for (y = height; y--; ) {
|
|
unsigned short * srclineend = c_src+width;
|
|
while (c_src < srclineend ) {
|
|
unsigned short val = *c_src++;
|
|
*c_dst++=((val&0xFFC0)>>1)|(val&0x001f);
|
|
}
|
|
c_src+=((pitch/2)-width);
|
|
}
|
|
}
|
|
|
|
/* *************************************
|
|
32 bpp to 16 bpp
|
|
************************************* */
|
|
static void pixel_convert_32_to_16(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned short *c_src = (unsigned short *) src;
|
|
unsigned int *c_dst = (unsigned int *) dst;
|
|
int y;
|
|
|
|
for (y = height; y--; ) {
|
|
unsigned short * srclineend = c_src+width;
|
|
while (c_src < srclineend ) {
|
|
*c_dst++ = (((*c_src & 0xF800) << 8) |
|
|
((*c_src & 0x07E0) << 5) |
|
|
((*c_src & 0x001F) << 3));
|
|
c_src++;
|
|
}
|
|
c_src+=((pitch/2)-width);
|
|
}
|
|
}
|
|
|
|
/* *************************************
|
|
32 bpp to 24 bpp
|
|
************************************* */
|
|
static void pixel_convert_32_to_24(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned char *c_src = (unsigned char *) src;
|
|
unsigned int *c_dst = (unsigned int *) dst;
|
|
int y;
|
|
|
|
for (y = height; y--; ) {
|
|
unsigned char * srclineend = c_src+width*3;
|
|
while (c_src < srclineend ) {
|
|
/* FIXME: wrong for big endian */
|
|
memcpy(c_dst,c_src,3);
|
|
c_src+=3;
|
|
c_dst++;
|
|
}
|
|
c_src+=pitch-width*3;
|
|
}
|
|
}
|
|
|
|
/* *************************************
|
|
16 bpp to 32 bpp
|
|
************************************* */
|
|
static void pixel_convert_16_to_32(
|
|
void *src, void *dst, DWORD width, DWORD height, LONG pitch,
|
|
IDirectDrawPaletteImpl* palette
|
|
) {
|
|
unsigned int *c_src = (unsigned int *) src;
|
|
unsigned short *c_dst = (unsigned short *) dst;
|
|
int y;
|
|
|
|
for (y = height; y--; ) {
|
|
unsigned int * srclineend = c_src+width;
|
|
while (c_src < srclineend ) {
|
|
*c_dst++ = (((*c_src & 0xF80000) >> 8) |
|
|
((*c_src & 0x00FC00) >> 5) |
|
|
((*c_src & 0x0000F8) >> 3));
|
|
c_src++;
|
|
}
|
|
c_src+=((pitch/4)-width);
|
|
}
|
|
}
|
|
|
|
Convert ModeEmulations[8] = {
|
|
{ { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 24, 24, 0xFF0000, 0x00FF00, 0x0000FF }, { pixel_convert_32_to_24, NULL } },
|
|
{ { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 16, 16, 0xF800, 0x07E0, 0x001F }, { pixel_convert_32_to_16, NULL } },
|
|
{ { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 8, 8, 0x00, 0x00, 0x00 }, { pixel_convert_32_to_8, palette_convert_24_to_8 } },
|
|
{ { 24, 24, 0xFF0000, 0x00FF00, 0x0000FF }, { 8, 8, 0x00, 0x00, 0x00 }, { pixel_convert_24_to_8, palette_convert_24_to_8 } },
|
|
{ { 16, 15, 0x7C00, 0x03E0, 0x001F }, { 16,16, 0xf800, 0x07e0, 0x001f }, { pixel_convert_15_to_16, NULL } },
|
|
{ { 16, 16, 0xF800, 0x07E0, 0x001F }, { 8, 8, 0x00, 0x00, 0x00 }, { pixel_convert_16_to_8, palette_convert_16_to_8 } },
|
|
{ { 16, 15, 0x7C00, 0x03E0, 0x001F }, { 8, 8, 0x00, 0x00, 0x00 }, { pixel_convert_16_to_8, palette_convert_15_to_8 } },
|
|
{ { 16, 16, 0xF800, 0x07E0, 0x001F }, { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { pixel_convert_16_to_32, NULL } }
|
|
};
|