Bentley LumenRT for NVIDIA Omniverse Help

Caustics

SettingDescription
Caustics Enable simulation of caustics generated by light emitted from area light primitives for which the 'Enable Caustics' flag is set. Note only Sphere, Rect and Disk lights support this
Photon Count Multiplier Factor that will be multiplied by 1024 to compute the total number of photons to generate from each light.
Photon Max Bounces Maximum number of bounces to compute for each light/photon path
Filter Iterations Number of iterations for the denoiser applied to the results of the caustics tracing pass