Caustics Render Element

Caustics is an effect that is produced when light rays are reflected or refracted by the materials within a scene, which can produce light patterns on objects in the scene. The Caustics Render Element displays these effects, which are generated with Caustics photon mapping, which is enabled from the Caustics rollout under the Common Tab in the VRayRenderer node. This render element is useful for enhancing or toning down caustic effects in the composite.