SDL_MapRGBA - Map a RGBA color value to a pixel format.
#include "SDL.h"
Uint32 SDL_MapRGBA(
SDL_PixelFormat *fmt, Uint8 r, Uint8
g, Uint8 b, Uint8 a);
Maps the RGBA color value to the specified pixel format and returns the pixel
value as a 32-bit int.
If the format has a palette (8-bit) the index of the closest matching color in
the palette will be returned.
If the specified pixel format has no alpha component the alpha value will be
ignored (as it will be in formats with a palette).
A pixel value best approximating the given RGBA color value for a given pixel
format. If the pixel format bpp (color depth) is less than 32-bpp then the
unused upper bits of the return value can safely be ignored (e.g., with a
16-bpp format the return value can be assigned to a
Uint16, and
similarly a
Uint8 for an 8-bpp format).
SDL_GetRGB,
SDL_GetRGBA,
SDL_MapRGB,
SDL_PixelFormat