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1 | .TH "SDL_GetRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
2 | .SH "NAME" |
3 | SDL_GetRGBA \- Get RGBA values from a pixel in the specified pixel format\&. |
4 | .SH "SYNOPSIS" |
5 | .PP |
6 | \fB#include "SDL\&.h" |
7 | .sp |
8 | \fBvoid \fBSDL_GetRGBA\fP\fR(\fBUint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a\fR); |
9 | .SH "DESCRIPTION" |
10 | .PP |
11 | Get RGBA component values from a pixel stored in the specified pixel format\&. |
12 | .PP |
13 | 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])\&. |
14 | .PP |
15 | If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque)\&. |
16 | .SH "SEE ALSO" |
17 | .PP |
18 | \fISDL_GetRGB\fR, \fISDL_MapRGB\fR, \fISDL_MapRGBA\fR, \fISDL_PixelFormat\fR |
19 | .\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |