Render Mask - Selected

[leehumphries]

Still having issues with this. On a simple test scene i get no issues. On a really large scene every time i try to render selected it always keeps rendering what i want but also the Forest scatter grass as the buckets grind to a halt.

Only thing i have selected is what i want

[leehumphries]

Still the same issue - render just the glass. It all works fine ignores everything / trees / building as soon as it gets to the FP grass it wants to render it. Not scene specific

[matanov]

Can you check what's the opacity mode of the grass material? Try with the other modes to see if the problem will go away.

[leehumphries]

OK this could be the issue. The item is from Megascans - its scanned grass and its on stochastic as default

[leehumphries]

Changed the opacity to Clip and it now works as it should. Appreciated the advice.

Is Clip slower than Stochastic if i was to be rendering the grass ?

[matanov]

"Clip" should be the fastest one, but there might be accuracy issues with specific opacity maps. Depends on your scene and assets.

[leehumphries]

ok thanks - is there a reason for Stochastic to not work with Render Mask - selected then ? Something that can be added / fixed ? Otherwise i have to change the assets opacity

[matanov]

It's a known issue and it's not very trivial to fix.