SDL_SetGamma.3
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:1k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- .TH "SDL_SetGamma" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
- .SH "NAME"
- SDL_SetGamma- Sets the color gamma function for the display
- .SH "SYNOPSIS"
- .PP
- fB#include "SDL&.h"
- .sp
- fBint fBSDL_SetGammafPfR(fBfloat redgamma, float greengamma, float bluegammafR);
- .SH "DESCRIPTION"
- .PP
- Sets the "gamma function" for the display of each color component&. Gamma controls the brightness/contrast of colors displayed on the screen&. A gamma value of 1&.0 is identity (i&.e&., no adjustment is made)&.
- .PP
- This function adjusts the gamma based on the "gamma function" parameter, you can directly specify lookup tables for gamma adjustment with fISDL_SetGammaRampfR&.
- .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_GetGammaRampfR fISDL_SetGammaRampfR
- ..." created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01