I’m using a Forest Pack object to scatter some vegetation, then unchecking ‘Visible to Camera’ just to get the shadows. The problem is that it produces some strange alpha issues (like the attached image), presumably where there are collisions in the Forest Pack object. The fix in the above post was to turn off Embree but I can’t see that as an option in the latest version of VRay.
Is there a way round this? The render slows right down on those particular bits.
With opacity mapped foliage, you may have to raise it even further, depending on how dense it is (as the rays will have to cross more opacity mapped planes the denser the vegetation is.).
You would get some massive performance increase, at the expense of more memory usage, if you made those leaves opaque polygon meshes.
Opacity and raytracing were never good friends.
It’s a very interesting ‘about-face’ (unintentional though witty pun) in rendering.
Unfortunately a great deal of the available assets still rely on opacity.
Life’s challenges are ever-changing
