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" parameter, 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