diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlsetgamma.html --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlsetgamma.html Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,231 @@ +SDL_SetGamma
SDL Library Documentation
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SDL_SetGamma

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

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