#include "ddraw_private.h" #include "debugtools.h" 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; } } Convert ModeEmulations[7] = { { { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 24, 24, 0xFF0000, 0x0000FF00, 0x00FF }, { pixel_convert_32_to_24, NULL } }, { { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 8, 8, 0x00, 0x00, 0x00 }, { pixel_convert_32_to_8, palette_convert_24_to_8 } }, { { 32, 24, 0x00FF0000, 0x0000FF00, 0x000000FF }, { 16, 16, 0xF800, 0x07E0, 0x001F }, { pixel_convert_32_to_16, NULL } }, { { 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 } }, };