Manual Pages for UNIX Operating System command usage for man SDL_GetRGBA

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  speci-
     fied pixel format.

     This function uses the entire 8-bit [0..255] range when con-
     verting  color  components from pixel formats with less than
     8-bits per RGB component (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            Last change: Tue 11 Sep 2001, 23:01              1