Testing again, Had some weird issue that after re rendering with no changes at all then rendered correctly. Looks the patch conversion code still has some major issues, Hope this helps diagnose them.
i had a quick try at this and it took a stupid amount of minutes to tesselate the plane and actually start rendering - is this normal?
the scene was nothing too special, a few objects and the AS was only on a single ground plane.
yes even a single scene can be really heavy if the parameters are not set correctly.
I notice that microdisplacement and tessellation do not work in panoramic renders. Is it a known issue or a bug or a feature that will be added in the future?
depends which parameters you mean. i had subdiv set to 4 i think, i’ll check anything else you mention. the vid on Guru just seemed to do the same thing, ie nothing special settings-wise and got much faster results - finished way, way before i’d finished tesselating etc.
regarding using the normal maps with micro-displacement and the mesh becoming all black , maybe it is logical that micro-displacement truly alters the mesh making the normals different so it doesn’t work ???
Is there a way to use both , or to feed the normal map input with the mesh changes of the micro-displacement ???
I filed a bug about it a while ago, but it was relegated to to-dos AFAIR. It sucks, but normal maps probably won’t work with microdisplacement in the foreseeable future.