Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_SetGammaRamp.3 @ 4184:ed5913896653 SDL-1.2
Disable Sound Manager support on Mac OS X.
It's an OS 9 API that was exposed via Carbon, but is gone in the 10.6 SDK.
OS X uses CoreAudio. We only had it in here for debugging purposes anyhow,
as SDL would never use it unless forced to with an environment variable.
It remains in SDL for OS 9, of course.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Sat, 12 Sep 2009 12:50:25 +0000 (2009-09-12) |
parents | 4e3b250c950e |
children | 1238da4a7112 |
rev | line source |
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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1 .TH "SDL_SetGammaRamp" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" |
0 | 2 .SH "NAME" |
4107
4e3b250c950e
Erik Heckers fixed bug #493
Sam Lantinga <slouken@libsdl.org>
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3 SDL_SetGammaRamp \- Sets the color gamma lookup tables for the display |
0 | 4 .SH "SYNOPSIS" |
5 .PP | |
6 \fB#include "SDL\&.h" | |
7 .sp | |
8 \fBint \fBSDL_SetGammaRamp\fP\fR(\fBUint16 *redtable, Uint16 *greentable, Uint16 *bluetable\fR); | |
9 .SH "DESCRIPTION" | |
10 .PP | |
11 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\&. | |
12 .PP | |
13 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\&. | |
14 .PP | |
15 Not all display hardware is able to change gamma\&. | |
16 .SH "RETURN VALUE" | |
17 .PP | |
18 Returns -1 on error (or if gamma adjustment is not supported)\&. | |
19 .SH "SEE ALSO" | |
20 .PP | |
21 \fISDL_SetGamma\fR \fISDL_GetGammaRamp\fR | |
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Sam Lantinga <slouken@libsdl.org>
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22 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01 |