Hi

I am using a principal shader. Drop it on my geo. Right click and say Allow Edit. Suddenly the node goes red stripy with an error Unknown parameter: ‘reflect’.

I have two lights - spot light and an area light.

Any ideas whats wrong?

I'm running Indie 15.5.

Regards

Lee

Works for me on my Windows system using Houdini 15.5.673.

What hardware are you using? Does it meet the minimum requirements to run Houdini?

Through further investigation, I found that one of the boxes in the Principal Shader was wired into the wrong port.

The Principalshader1 ‘F’ port was plugged into the ‘Layer’ port of computelighting1. I removed this and put it as an input to the ‘F’ port and it all then worked.

Why would the system wire these incorrectly?

I'm using a HP Z840, with Intel E5-2620 v3 @ 2.4GHz, 64 GB RAM and NVIDIA GeForce GTX980 Ti card.