off-axis projection for stereo

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Liu Xiaoyan (liuxy++at++ihpc.nus.edu.sg)
Wed, 24 Feb 1999 17:22:26 +0800

Hi, all,

I just learned that calling glTranslate or
glRotate onto GL_PROJECTION matrix will
mess up opengl rendering. However, for proper
stereo effect, 2 channels doing off-axis
projection are required.

Just wonder what does the following paragraph from
pfChannel manpage mean exactly:

>Both translation and rotational offsets are
encoded in the graphics
>library's ModelView matrix. This ensures
that fogging is consistent
>across multiple, adjacent pfChannels.

Does the "offsets" include both transformations
from channel->setView and channel->setViewOffset?
I guess it should include both.

Thanks for help.

Liu

--
***********************************************************************


Liu Xiaoyan                     Institute of High
Performance Computing
Research Engineer                      National
University of Singapore
Data Visualisation Group
http://www.ihpc.nus.edu.sg  Tel:(65)7709267
***********************************************************************

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