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glReadPixels and GL_DEPTH_COMPONENT



Hi everybody,
 
Does anybody here know anything wrong with reading depth values through calling glReadPixels on Geforce cards? I have users from both PowerPC and Intel Mac reported that my OpenGL rendering turns screen into piles of garbage bits. Even though I have not been able to duplicate this problem on my 2x2.66 GHz Dual-Core Intel Xeon with Geforce 7300 GT, I suspect something wrong with me using glReadPixels(..GL_DEPTH_COMPONENT).
 
Any idea? Really appreciate it.
 
 
Shirley Carter
Nemetschek N.A. Inc.
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