focal (3) SDL_MapRGBA.3.gz

Provided by: libsdl1.2-dev_1.2.15+dfsg2-5_amd64 bug

NAME
       SDL_MapRGBA - Map a RGBA color value to a pixel format.


SYNOPSIS
       #include "SDL.h"

       Uint32 SDL_MapRGBA(SDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b, Uint8 a);


DESCRIPTION
       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).


RETURN VALUE
       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).


SEE ALSO
       SDL_GetRGB, SDL_GetRGBA, SDL_MapRGB, SDL_PixelFormat