SDL_SetGamma(3) SDL API Reference SDL_SetGamma(3)NAME
SDL_SetGamma- Sets the color gamma function for the dis-
play
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 col-
ors displayed on the screen. A gamma value of 1.0 is iden-
tity (i.e., no adjustment is made).
This function adjusts the gamma based on the "gamma func-
tion" 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 sup-
ported).
SEE ALSO
SDL_GetGammaRamp SDL_SetGammaRamp
SDL Tue 11 Sep 2001, 23:01 SDL_SetGamma(3)
