icetGLSetReadBuffer3
Usage
#include <IceTGL.h>
| void icetGLSetReadBuffer( | GLenum | mode ); |
Overview
Set the OpenGL buffer from which to read images to composite. After the draw callback (specified by icetGLDrawCallback) returns, IceT grabs the rendered image from the OpenGL buffer specified by mode. This buffer is also used to write back fully composited images if the ICET_GL_DISPLAY option is on.
mode is an OpenGL value that specifies the buffer. It is passed to glReadBuffer and glDrawBuffer. Accepted values are GL_FRONT, GL_BACK, GL_LEFT, GL_RIGHT, GL_FRONT_LEFT, GL_FRONT_RIGHT, GL_BACK_LEFT, GL_BACK_RIGHT, and any of the GL_AUXi identifiers.
The current read buffer used is stored in the ICET_GL_READ_BUFFER state variable. The default value is GL_BACK.
Errors
|
icetGLInitialize has not been called for this IceT context. |
|---|---|
|
mode is not a known OpenGL buffer identifier. |
Warnings
None.
Releases
7 releases since Debian 7 (Wheezy); the text changed 2 times.