sdl_getrgba(3) opensolaris man page | unix.com

SDL_GetRGBA(3)							 SDL API Reference						    SDL_GetRGBA(3)

NAME
       SDL_GetRGBA - Get RGBA values from a pixel in the specified pixel format.

SYNOPSIS
       #include "SDL.h"

       void SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);

DESCRIPTION
       Get RGBA component values from a pixel stored in the specified pixel format.

       This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB compo-
       nent (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).

       If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque).

SEE ALSO
       SDL_GetRGB, SDL_MapRGB, SDL_MapRGBA, SDL_PixelFormat

SDL
							      Tue 11 Sep 2001, 23:01						    SDL_GetRGBA(3)