Daniel Rivas Perpen

Hi,
I am trying to recreate the fromNDC VEX function in OpenCL. I successfully did this with the toNDC function following Mario's tutorial [www.sidefx.com]

However, I cannot seem to get fromNDC to work. Basically I invert the multiplication of the 2 matrices (cam and perspective projection) and then multiply it by the vector4 of the NDC coordinates, assuming 0 to 1 normalization.

Attached a project file with 2 wranglers, one with the fromNDC VEX function working properly and the other with my non working attempt.

Thanks!

Oh man, thanks a lot!

Hi,
I am trying to render the “inside” of a geometry in Unity. It all looks good in the HDA in Houdini (left) but then in Unity the normals seem inside out. Any idea where is the issue?

Thanks!