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SDL_SetGamma

Section: SDL API Reference (3)
Updated: Tue 11 Sep 2001, 23:01
Index Return to Main Contents
 

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" 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 supported).  

SEE ALSO

SDL_GetGammaRamp SDL_SetGammaRamp


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
SEE ALSO




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