CAUSTICS I

Creating a caustic lighting effect using Houdini's Mantra PBR rendering engine.

NOTE: WHILE MUCH OF THIS SERIES REMAINS VALID, THE CAUSTIC LIGHT IN HOUDINI 11 HAS CHANGED WORKFLOWS. SEE THE LIGHTING IN H11 SERIES.

This first part starts with a refresher on refraction.

We look at setting up normals correctly, then at the glass shader in Houdini, faux caustics and shadows, and using an environment light in PBR to generate 'background' reflections.

NOTE : THIS WORKFLOW HAS CHANGED IN HOUDINI 11