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)