On Monday 27 Feb 2012 15:26:15 Robert Osfield wrote: > HI Magnus, > > If you make a Transform node as STATIC then you've told the scene > graph that it will never change so will be fair game for the > Optimizer. You have two choices if you don't want to have the > Optimizer optimize it away: > > 1) Don't call the Optimizer with the FLATTEN_STATIC_TRANSFORM enabled. > 2) Make your Transforms which will be changing as DYNAMIC. > > Robert. >
Hi Robert, Thanks for your rapid answer. I understand perfectly well the way the optimizer works and how to get the desired behaviour in its current implementation. DYNAMIC DOFTransform is the way to go (FLATTEN_STATIC_TRANSFORMS wouldn't work, as these DOFTransform nodes are part of bigger scenes, that do benefit from transformation flattening). I was just trying to see if there was a good reason to ever set the data variance to STATIC on a DOFTransform. But maybe this question is more to the authors of osgmaxexporter. Why does osgmaxexporter unconditionally set the data variance to STATIC? What are the use cases where one would model a STATIC DOFTransform? Magnus
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