Thomas Mangold

Tom Mangold

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Recent Forum Posts

Retroreflection in Karma May 9, 2025, 9:32 a.m.

I guess I would just have faked it in Mtlx by increasing the specular amount to insanity. But we all know 1 is the max amount, also increasing the color value way above 1 doesn't help either.

Anybody succeeded in replicating something like a cateye reflector, or the reflective material on a warning vest?

Any tips are highly appreciated.


Cheers
Tom

Extract Solaris Camera Position to SOP Geometry March 14, 2025, 5:06 a.m.

You can access the usd_attrib(utes) and usd_localtransform(s) from a wrangle node in sops. Just make sure that there's a file node inbetween this query and the export to lops. Otherwise there's a problem (infinite loop).

No need for a lop camera import if this is possible.

Mtlx AO backface issue Nov. 28, 2024, 4:48 a.m.

This seems to me like a bug. Backfaces appear black and not shaded correctly.

As if the normal for the ao calculation is pointing in the normal of the prim, but the shading is transfered to it's back. As if doubled sided calculations are broken.

Can anybody confirm this?

Using a mesh edit node with double sided checked didn't change anything.


Cheers
Tom