Mercurial > sdl-ios-xcode
view docs/man3/SDL_GetRGBA.3 @ 2701:91b0e95f443a
Date: Wed, 7 May 2008 21:48:10 +0200
From: Christian Walther
Subject: SDL 1.3 Xcode projects
Here are my promised updates to the Xcode projects. They work as far
as I'm using them, but I have not tested them thoroughly, and there
may still be some cruft left. In particular, I haven't checked whether
the frameworks still work on older versions of Mac OS X (are we still
targeting 10.2?), and whether Altivec/SSE optimizations are properly
done. Of note: I incremented the framework version to B to enable SDL
1.2 and 1.3 to coexist in a single framework.
Let me know if you see any problems.
Greetings
Christian
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 08 May 2008 05:06:24 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_GetRGBA" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_GetRGBA \- Get RGBA values from a pixel in the specified pixel format\&. .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBvoid \fBSDL_GetRGBA\fP\fR(\fBUint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a\fR); .SH "DESCRIPTION" .PP Get RGBA component values from a pixel stored in the specified pixel format\&. .PP 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])\&. .PP If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque)\&. .SH "SEE ALSO" .PP \fISDL_GetRGB\fR, \fISDL_MapRGB\fR, \fISDL_MapRGBA\fR, \fISDL_PixelFormat\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01