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SDL_SetGamma(3) 	       SDL API Reference	       SDL_SetGamma(3)

NAME
       SDL_SetGamma - Sets the color gamma function for the display

SYNOPSIS
       #include "SDL.h"

       int SDL_SetGamma(float redgamma, float greengamma, float bluegamma);

DESCRIPTION
       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).

       This  function  adjusts the gamma based on the "gamma function" parame-
       ter, you can directly specify lookup tables for gamma  adjustment  with
       SDL_SetGammaRamp.

       Not all display hardware is able to change gamma.

RETURN VALUE
       Returns -1 on error (or if gamma adjustment is not supported).

SEE ALSO
       SDL_GetGammaRamp SDL_SetGammaRamp

SDL			    Tue 11 Sep 2001, 23:01	       SDL_SetGamma(3)