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Diffstat (limited to 'distrib/sdl-1.2.15/docs/man3/SDL_SetGamma.3')
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diff --git a/distrib/sdl-1.2.15/docs/man3/SDL_SetGamma.3 b/distrib/sdl-1.2.15/docs/man3/SDL_SetGamma.3 new file mode 100644 index 0000000..4897272 --- /dev/null +++ b/distrib/sdl-1.2.15/docs/man3/SDL_SetGamma.3 @@ -0,0 +1,22 @@ +.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 |