blob: eba9dfbb23c4236ce39ff76ff7a3f5b3e83f2a41 [file] [log] [blame]
.TH "SDL_GetRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
SDL_GetRGBA \- Get RGBA values from a pixel in the specified pixel format\&.
\fB#include "SDL\&.h"
\fBvoid \fBSDL_GetRGBA\fP\fR(\fBUint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a\fR);
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)\&.
\fISDL_GetRGB\fR, \fISDL_MapRGB\fR, \fISDL_MapRGBA\fR, \fISDL_PixelFormat\fR
.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01