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view docs/man3/SDL_SetGamma.3 @ 4217:4c4113c2162c SDL-1.2

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Fixed bug #706 Ken Bull 2009-02-25 13:22:02 PST Adds Doxygen support for all headers (except config and boilerplate headers) in the include folder for SDL-1.2 revision 4446. While in general SDL is quite thoroughly commented, none of these comments are correctly formatted for Doxygen and are generally inconsistent in their formatting.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 21 Sep 2009 09:38:10 +0000
parents 4e3b250c950e
children 1238da4a7112
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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