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view docs/man3/SDL_SetGammaRamp.3 @ 361:87624d1308f5
From: Wilbern Cobb <vedge@csoft.org>
Subject: Re: SDL 1.2.4 on FreeBSD (fwd)
X-Mailer: My Mailer 1.5 <slouken@devolution.com>
On Wed, 17 Apr 2002, Sam Lantinga wrote:
> > By the way, README.OpenBSD is outdated; nasm, semaphores and OpenGL
> > work fine; native audio has been the default in ports since post-2.9.
>
> Great, want to update README.OpenBSD?
Actually i think it can be removed, none of what it says applies now;
GNU make is no longer needed as of 3.0 either.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 18 Apr 2002 04:47:49 +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