Manual Pages for UNIX Operating System command usage for man SDL_SetGamma

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 com-
     ponent.  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  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            Last change: Tue 11 Sep 2001, 23:01              1