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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