view docs/man3/SDL_SetGamma.3 @ 1274:4726fa79ede1

Date: Mon, 23 Feb 2004 23:29:20 -0500 From: "Brian Kropf" Subject: [SDL] Windx5 I was wondering if I could suggest a change for (at least) the mingw/msys build. Every time I do the ./configure, make on a fresh download it crashes when it tries to find directx.h for the audio portion of the build In file included from SDL_dx5audio.c:37: SDL_dx5audio.h:31:21: directx.h: No such file or directory In file included from SDL_dx5audio.c:37: I usually copy the directx.h from the video/windx5 into the audio/windx5 and things go smoothly after that; just thought I'd suggest it for making future builds go smoothly. ;)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 27 Jan 2006 05:36:47 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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.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