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)
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