-Pietro-
You can enable ambient occlusion from the high quality lighting button
HerveMasterHipoly
the problem is that for Houdini scenes that were been created with default Y up orientation, I have trouble getting them to suit the Z up orientation. How to solve the problem?
On a per object basis, if you mainly do modeling work then export at least, You can do your main work in Houdini's default Y orientation, then use a Matchaxis node downstream before exporting, for example. For Y to Z it would look like this:
Thanks guys, you really help me