Optimizations

This enables the per-material Trace Depth parameters below. When disabled, global trace depths from the render settings are used.

This parameter controls the trace depth for reflection rays shot from this material. If the reflection rays of a material are not very defined (meaning they are blurry because of high roughness or have a low reflection weight), then multiple bounces can be a waste of rendering time. This parameter allows the user to reduce the trace depth and speed up rendering on a per-material basis.

This parameter allows you to override the global cut-off setting for reflections.

When the reflections of a material are very dark (because of low "Weight" or "Color" values) they contribute very little to the final image. This parameter defines what is considered "very dark" at which point no more reflection rays will be shot — which will speed up rendering. Scenes containing very strong lights might need this parameter set to very low values such as 0.0001 in order to avoid early termination which can produce a grain-like effect.