Mercurial > sdl-ios-xcode
view docs/man3/SDL_SetGammaRamp.3 @ 2105:12bcd4fd2606
Date: Wed, 23 May 2007 00:39:47 +0300
From: "Eyal Lotem"
To: "SDL Mailing List" <sdl@lists.libsdl.org>
Subject: [SDL] Bug in GL_SWAP_CONTROL extension name.
The checked extension name is incorrect.
The attached patch fixes it to the correct name.
I don't think that under any setup, this extension name was ever
correct, which is why its not OR'd against the old check.
This fixes the "tear effect" (vsync problems) I had here with nVidia
GLX drivers.
Eyal
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 22 May 2007 22:13:56 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
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.TH "SDL_SetGammaRamp" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_SetGammaRamp\- Sets the color gamma lookup tables for the display .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_SetGammaRamp\fP\fR(\fBUint16 *redtable, Uint16 *greentable, Uint16 *bluetable\fR); .SH "DESCRIPTION" .PP Sets the gamma lookup tables for the display for each color component\&. Each table is an array of 256 Uint16 values, representing a mapping between the input and output for that channel\&. The input is the index into the array, and the output is the 16-bit gamma value at that index, scaled to the output color precision\&. You may pass NULL to any of the channels to leave them unchanged\&. .PP This function adjusts the gamma based on lookup tables, you can also have the gamma calculated based on a "gamma function" parameter with \fISDL_SetGamma\fR\&. .PP Not all display hardware is able to change gamma\&. .SH "RETURN VALUE" .PP Returns -1 on error (or if gamma adjustment is not supported)\&. .SH "SEE ALSO" .PP \fISDL_SetGamma\fR \fISDL_GetGammaRamp\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01