Does anyone know why the null node in a MaterialX subnet or in Karma Material Builder stops the stream at the place it is connected? I thought it's supposed to do nothing and pass anything from its input to its output. It tried both in Karma CPU and XPU. I am attaching screenshots with a simple example. Thanks.

Not supporting Null VOP fully is a bug (117527 & 145190). IIRC the main obstacle is that null allows renaming ports (variables) in the generated source, so would probably need to be translated into a bunch of Mtlx Dot shaders. Or just keep it simple and flow thru without ability to rename anything.

rafal
Not supporting Null VOP fully is a bug (117527 & 145190). IIRC the main obstacle is that null allows renaming ports (variables) in the generated source, so would probably need to be translated into a bunch of Mtlx Dot shaders. Or just keep it simple and flow thru without ability to rename anything.

Thank you for the response!