Hi Alan,
You should keep "Sample Displacement before rendering "option on. This
option will give correct bounding boxes to MR for the displaced
geometries. So the BSP will be better
and render time too.
If your render time is slower with this option on, maybe it is your max
displacement value that is too high. Try to set the max displacement
value just a little bit bigger than your maximum displacement in your
scene.
1/2
Guillaume Laforge | La Maison
Alan Fregtman a écrit :
Hello everybody,
Apparently there is no mention of this option ("Sample displacement
before rendering" under the Optimization tab in Renderer Options) in
the XSI manuals, so I don't know for sure what exactly it's for or why
it's ON by default.
Oh great all-knowing mailing list, I kindly summon thou powers!!
......What is this option for? Is there a downfall to disabling it?
It appears to cut down rendertime (when using displacement) by about
half when it's off, while seemingly not affecting the quality at all
whatsoever, but maybe I haven't tested it enough.
I was about to add a note about this on my "faster displacement by
optimizing" tutorial I posted on xsibase a few days ago, but wanted to
confirm if there was any downside to it.
http://www.xsibase.com/forum/index.php?board=6;action=display;threadid=34543
Cheers,
-- Alan
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