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The format detection code works better with 555 and 565 pixel formats

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This commit is contained in:
Sam Lantinga
2011-02-04 16:55:50 -08:00
parent 509c2203d4
commit 16b53812a8
2 changed files with 22 additions and 26 deletions
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32
src/video/SDL_pixels.c
View File

@@ -256,12 +256,12 @@ SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
}
break;
case 15:
switch (Rmask) {
case 0x001F:
return SDL_PIXELFORMAT_BGR555;
case 0x7C00:
if (Rmask == 0x7C00 && Bmask == 0x001F) {
return SDL_PIXELFORMAT_RGB555;
}
if (Rmask == 0x001F && Bmask == 0x7C00) {
return SDL_PIXELFORMAT_BGR555;
}
break;
case 16:
switch (Rmask) {
@@ -273,18 +273,24 @@ SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
return SDL_PIXELFORMAT_BGRA4444;
case 0x000F:
return SDL_PIXELFORMAT_ABGR4444;
case 0x001F:
if (Gmask == 0x07E0) {
return SDL_PIXELFORMAT_BGR565;
}
return SDL_PIXELFORMAT_ABGR1555;
case 0x7C00:
return SDL_PIXELFORMAT_ARGB1555;
case 0xF800:
if (Gmask == 0x07E0) {
if (Bmask == 0x001F) {
return SDL_PIXELFORMAT_RGB565;
}
return SDL_PIXELFORMAT_RGBA5551;
break;
case 0x7C00:
if (Bmask == 0x001F) {
return SDL_PIXELFORMAT_RGB555;
}
break;
case 0x001F:
if (Bmask == 0xF800) {
return SDL_PIXELFORMAT_BGR565;
}
if (Bmask == 0x7C00) {
return SDL_PIXELFORMAT_BGR555;
}
break;
}
break;
case 24:

16
src/video/windows/SDL_windowsframebuffer.c
View File

@@ -60,22 +60,12 @@ int WIN_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, voi
*format = SDL_PIXELFORMAT_UNKNOWN;
if (info->bmiHeader.biCompression == BI_BITFIELDS) {
int bpp;
Uint32 *masks;
bpp = info->bmiHeader.biPlanes * info->bmiHeader.biBitCount;
masks = (Uint32*)((Uint8*)info + info->bmiHeader.biSize);
if (masks[0] == 0x00FF0000 && masks[2] == 0x000000FF) {
*format = SDL_PIXELFORMAT_RGB888;
} else if (masks[0] == 0x000000FF && masks[2] == 0x00FF0000) {
*format = SDL_PIXELFORMAT_BGR888;
} else if (masks[0] == 0xF800 && masks[2] == 0x001F) {
*format = SDL_PIXELFORMAT_RGB565;
} else if (masks[0] == 0x001F && masks[2] == 0xF800) {
*format = SDL_PIXELFORMAT_BGR565;
} else if (masks[0] == 0x7C00 && masks[2] == 0x001F) {
*format = SDL_PIXELFORMAT_RGB555;
} else if (masks[0] == 0x001F && masks[2] == 0x7C00) {
*format = SDL_PIXELFORMAT_BGR555;
}
*format = SDL_MasksToPixelFormatEnum(bpp, masks[0], masks[1], masks[2], 0);
}
if (*format == SDL_PIXELFORMAT_UNKNOWN)
#endif