Kay Poprawe

dlee

coccosoids
Can you post a visual example of this?

Of course, here's a screencap of the parameter window showing the LPE set up and its output. Note that karma does not support 'negate' operation in LPE, so you'd negate it in comp should you need it.

Image Not Found

Thanks again for the informations about the LPE Expression Stuff. I'm now a bit more less stupid. It works like it should, but I now have the issue, that the renderpass with that mask of my Character with fur is not solid black. Ofcourse because the Karma Fur Shader or these kind of shaders in general behave like refracting materials.

Sorry, I can't share a picture. But maybe you or someone else have an idea how to solve this kind of problem.

THX,
Kay

dlee

coccosoids
Can you post a visual example of this?

Of course, here's a screencap of the parameter window showing the LPE set up and its output. Note that karma does not support 'negate' operation in LPE, so you'd negate it in comp should you need it.

Image Not Found

Thanks! That will helps a lot.

cheers,
Kay

dlee
Hi. As of Houdini 20.0 karma supports 'B' (background) event in LPE so you can describe any light path to uses as custom alpha (which then you would invert in comp).
For example, if you want to consider any background hits with 0 or more transmissions, use 'CT*B'.

Or I'm new to Rendering in Houdini. But I will figure out what exactly you mean. At the moment I'm more frustrated that it looks like a lot of stuff is still buggy in Houdini 20, at least in the version I'm using at the moment, because in Houdini 19 the things I'm testing worked well.

We will install the latest version of H20 next Week. Maybe problems are solved more. And stable enough that I could enjoy it a bit more with Karma and Solaris in H20.

Cheers and have a nice weekend.
Kay