DragonFly On-Line Manual Pages

Search: Section:  

SDL_GetRGBA(3)		       SDL API Reference		SDL_GetRGBA(3)


NAME

       SDL_GetRGBA  - Get RGBA values from a pixel in the specified pixel for-
       mat.


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 com-
       ponent (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)

Search: Section: