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 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