1SDL_SetGamma(3)                SDL API Reference               SDL_SetGamma(3)
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NAME

6       SDL_SetGamma- Sets the color gamma function for the display
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SYNOPSIS

9       #include "SDL.h"
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11       int SDL_SetGamma(float redgamma, float greengamma, float bluegamma);
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DESCRIPTION

14       Sets  the  "gamma  function"  for  the display of each color component.
15       Gamma controls the  brightness/contrast  of  colors  displayed  on  the
16       screen. A gamma value of 1.0 is identity (i.e., no adjustment is made).
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18       This  function  adjusts the gamma based on the "gamma function" parame‐
19       ter, you can directly specify lookup tables for gamma  adjustment  with
20       SDL_SetGammaRamp.
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22       Not all display hardware is able to change gamma.
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RETURN VALUE

25       Returns -1 on error (or if gamma adjustment is not supported).
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SEE ALSO

28       SDL_GetGammaRamp SDL_SetGammaRamp
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32SDL                         Tue 11 Sep 2001, 23:01             SDL_SetGamma(3)
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