Thomas Mangold

Tom Mangold

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Recent Forum Posts

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

Rendervisibility -reflect NOT excluding coat reflections Nov. 23, 2024, 10:58 a.m.

primvars::karma::object::rendervisibility -> -reflect not excluding the coat reflections. Is there a special flag like -coat (which doesn't work)?

Consider this kind of a bug.

Is there a list with additional flags except from the ones which pop up by using the presets?


Cheers
Tom

No lights but the scene is not black Nov. 22, 2024, 12:11 p.m.

This is unfortunately not feature, but something which just costs time. Especially since 20.5 it can only be disabled in the USD Render ROP.

No way to check the emission on it's own in the viewport. One needs to create a point light and place it infinity so that it won't light anything.

It's utterly strange to force a front light onto the user. If all lights are disabled, it's for a reason. If a headlight is needed, easy to create one.

At least bring it back into the Karma render settings, so that the scene can be viewed without the headlight. Or introduce it as a global preference setting.