Mercurial > sdl-ios-xcode
view docs/man3/SDL_SetGamma.3 @ 1165:4fa705cdecb9
Date: Tue, 1 Nov 2005 02:51:09 +0000
From: Mike Frysinger <vapier@gentoo.org>
To: sdl@libsdl.org
Subject: Re: [SDL] libsdl needs some tweaks for DirectFB 0.9.23
On Fri, Oct 28, 2005 at 01:23:57AM +0000, Mike Frysinger wrote:
> the new release of DirectFB breaks the libsdl DirectRB video module
>
> specifically, this change:
> http://www.directfb.org/index.php/viewcvs.cgi/DirectFB/include/directfb.h.diff?r1=1.266&r2=1.267
>
> but (unless i missed something), it should be trivial to fix (just annoying)
> ... ive done so in Gentoo (also attached):
> http://viewcvs.gentoo.org/media-libs/libsdl/files/libsdl-1.2.9-DirectFB-updates.patch
hmm, i did miss something ... need to include directfb_version.h before trying
to test version defines :)
updated patch attached as well as previous URL
-mike
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 01 Nov 2005 04:18:08 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
line wrap: on
line source
.TH "SDL_SetGamma" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_SetGamma\- Sets the color gamma function for the display .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_SetGamma\fP\fR(\fBfloat redgamma, float greengamma, float bluegamma\fR); .SH "DESCRIPTION" .PP Sets the "gamma function" for the display of each color component\&. Gamma controls the brightness/contrast of colors displayed on the screen\&. A gamma value of 1\&.0 is identity (i\&.e\&., no adjustment is made)\&. .PP This function adjusts the gamma based on the "gamma function" parameter, you can directly specify lookup tables for gamma adjustment with \fISDL_SetGammaRamp\fR\&. .PP Not all display hardware is able to change gamma\&. .SH "RETURN VALUE" .PP Returns -1 on error (or if gamma adjustment is not supported)\&. .SH "SEE ALSO" .PP \fISDL_GetGammaRamp\fR \fISDL_SetGammaRamp\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01