Thansk again to everyone,
RobSteady wrote:Can you give some tips for rendering interiors?
- Using lights vs emitter materials
- good and "fast" glass material for windows
- settings for direct light (or are they default?)
- things to avoid
Well interiors are really hard to render, especially if it's a closed environment, so no miracle, try to make as much light as possible entering. I usually try to open non visible walls but more and more I'm using emitter planes behind or instead of the glass windows.
For glass windows, specular material with fake shadows on a box mesh works fine but I suspect it generates some caustics with pathtracing or pmc, so a single plane with glossy material (reflection 1.0, opacity ~0.15 and a falloff texture) with normals pointing inside is a good solution.
For direct light I tend to use the diffuse mode, with a diffuse depth = 6, spec and glossy depth around 10 depending on the scene and the defaults for the others parms.
Things to avoid are glossy materials if not required, strong bumps, emitters behind specular materials, too closed environments, glossy with high roughness if not necessary.