when using displacement -
you may see some rendering artifacts.
these can be cause by geometry displacing so that he new geometry is intersecting itself - imaging two seperate primitives facing each other and quite close to each other - if they - or their corresponding micro-polys are pushed out with displacement - the may 'collide' or intersect.
displacement bounds combats this by checking around the poly for potential intersection.
The higher the bound value (bounding area) - the more area is checked - therefore the more expensive it is, so it should be used at a minimum successful value.
to access this param (it used to be there in H8 but where is it in H9 ! ?)
go to the presets (the little cog) in the mantra node
insert example images here:
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