Vojtech Proschl

Hello. I am looking for a way to display raster images created using HDK plugin. I wasn't able to find a gadget on the .ui script documentation page which could be able to do it.

Is there any way to do it? Btw. being able to write to MPlay would suffice for me, but that seems to be impossible to do according to what I've found on the internet so far.

Hello. As a school project, I am creating a path tracer as a Houdini plugin. I want to use Houdini API as much as possible to save time. However, I was unable to find some basic things in the documentation.

I would like to use API for the following problems.

1) Ray vs. Scene intersection
Ray -> Intersection position, intersected object id.

2) Principled Shader Evaluation
I want to get values (base color, roughness, etc.) corresponding to principled shader inputs at specific 3D coordinates.

I assume the following two are possible using principled shader API.
3) BRDF evaluation
I.e., the amount of reflected light coming from some direction to some other direction

4) BRDF sampling
Generation of rays according to the BRDF behavior

I will be grateful to anyone pointing me in the right direction to solving those problems.