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| author | Jesse Hall <jessehall@google.com> | 2012-07-09 11:27:07 -0700 |
|---|---|---|
| committer | Jesse Hall <jessehall@google.com> | 2012-07-22 00:35:08 -0700 |
| commit | 9682c8870b8ff5e4ac2e4c70b759f791c6f38c1f (patch) | |
| tree | ded6ee18c4e1f33df235e53615a6d65e2d64f4ef /distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3 | |
| parent | 74b55003f76dbca96e4a26d98fe464081ca5341f (diff) | |
| download | external_qemu-9682c8870b8ff5e4ac2e4c70b759f791c6f38c1f.zip external_qemu-9682c8870b8ff5e4ac2e4c70b759f791c6f38c1f.tar.gz external_qemu-9682c8870b8ff5e4ac2e4c70b759f791c6f38c1f.tar.bz2 | |
Import SDL release-1.2.15
Change-Id: I505c4aea24325cad475f217db5589814b4c75dbf
Diffstat (limited to 'distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3')
| -rw-r--r-- | distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3 b/distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3 new file mode 100644 index 0000000..52bf9f5 --- /dev/null +++ b/distrib/sdl-1.2.15/docs/man3/SDL_SetGammaRamp.3 @@ -0,0 +1,22 @@ +.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 |