Johan Borgström


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Recent Forum Posts

Camera ray to tangent space Sept. 13, 2022, 8:32 a.m.

Hi, I am trying to transform the camera ray to tangent space.
I am using a kma_rayimport node (Vector3, ray:direction)and a mtlxtransformvector to transform the vector. I could not find any documentation on which names to use in the fromspace, tospace parameters (I have tried space:world, space:tangent and other combinations but just guessing here)

Can anyone shed some light here

Best Regards,

Interior mapping on HDA July 5, 2022, 2:37 p.m.

Hi dpernuit,

Thanks for the info, refine Houdini proxy meshes works perfect.
Out of curiosity, do you know why it is needed to set the tangentu and tangentv vertex attr to {0,0,0} to get the interior mapping to work?

Interior mapping on HDA July 5, 2022, 10:05 a.m.

Thanks Melt!

Following your advice made it work after I bake the HDA. Baking it makes both the baked result and the HDA work with the interior mapping.

Before it is baked (or if a parameter of the HDA is changed) it only shows the "x-axis". I have attached a gif showing the HDAin unreal. Does anyone know why it behaves like this?


/ Johan