John Perrigo

Yes this is all working but only with this specific release on github

https://github.com/sideeffects/HoudiniLiveLink/releases/download/v1.1/HoudiniLiveLinkv1.2-UE4.27.zip [github.com]

mrboni
The second issue is visible in the textured road images above and appears to be significant texture filtering artefacts, not connected to the resolution of the source textures (btw I checked and the images are 2048px anyway ) This issue is still present when using lights other than dome. (Also just tried using 'Simplified Shading' and its still there)

So I was just testing this myself and using a tiled texture I seeing the same problem with XPU and not with CPU. However, if you use a USD Preview Surface material instead of a MaterialX Standard Surface the issue looks a little more improved (in my test) but definitely not as good as the CPU result.

mrboni
I know the 'XPU is darker' issue is already logged, but I'm trying to figure out why Karma CPU vs XPU renders look so different in other ways.

An easy example - load Crag into solaris, light with a dome light / distant light and look at the results. The XPU render is really glossy. Looks like either / both roughness and normals are behaving very differently.

Or is this just an issue with
my config?

Looks like the Crag test geometry is using a principled shader

XPU only supports materialX and USD Preview Surface