Mercurial > sdl-ios-xcode
view docs/man3/SDL_SetGammaRamp.3 @ 4107:4e3b250c950e SDL-1.2
Erik Heckers fixed bug #493
Searching the installed man pages for SDL functions fails, e.g.
man -k SDL_ |grep Video
After investigating this I found that "makewhatis", the tool that generates
the "whatis" database, reads the SDL_* man pages, but doesn't produce
entries in the "whatis" database for the SDL_* man pages.
After some more debugging I found the reason is a missing space.
After editing SDL_Init.3(.gz) and replacing
SDL_Init\- Initializes SDL
with
SDL_Init \- Initializes SDL
everything works fine.
After running "makewhatis" I can successfully do a
man -k SDL_
and SDL_Init is listed in the output.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 29 Dec 2007 02:34:53 +0000 |
| parents | e5bc29de3f0a |
| children | 1238da4a7112 |
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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