Re: [Algorithms] portal engines in outdoor environments

[Bernd K. <bk...@lo...>]

Brian Paul writes:
 > The actual value of this extension is questionable.  The problem
 > is you have to do a read-back from the hardware to get the
 > occlusion test result and the hit from doing that can be substantial.
 
Someone here said that the idea is to count on frame coherence
and use results from previous frames as an indicator. But yeah,
just on gut level I would not be suprised to see any kind of
readback interfere with the performance of pipelined architectures.


                                                b.