It says that when we use poisson sample,we will close VSM.Does it use VSM by default?If not,how can we use VSM.It seems that VSM cannot be turned on here.
Also, do we have Moment Shadow Mapping?
It says that when we use poisson sample,we will close VSM.Does it use VSM by default?If not,how can we use VSM.It seems that VSM cannot be turned on here.
cc @sebavan
This is a doc issue, we do not support VSM since a long time now 
and the default mode is actually hard shadow. I would recommend PCF as a nice tradeoff.
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