Reflection/Refraction overrides use the Dome Light hdri texture. Background uses the Dome Light hdri texture. See the following screenshots - the scene consists of a shadow catcher plane, a Dome Light, and 3 spheres (front 2 polished chrome, 3rd one is glass):ġ. You would still need Reflection/Refraction overrides (again, copy the hdri texture from the Dome Light) to properly render the scene objects, otherwise they will be affected by the wrapper plane. Also, in most cases you would want to match the overrides and background intensity values (as well as Dome Light's).Īlso, depending on the scene, consider using the post-production VFB Exposure tool instead of increasing the background intensity value to minimize the negative effect background intensity can have on anti-aliasing (which I mentioned in the previous post). If you wish to increase the Dome light illumination, simply increase the light intensity. You don't actually get a double light source by using same texture for GI and Dome Light. If it is a hemisphere, the Dome block GI from half the Environment (in which case you would need to set up a GI override with a copied hdri texture from the Dome Light to compensate for the other half).

As already mentioned Dome light blocks GI illumination if it is a sphere. Then, make sure the Dome Light (set to Sphere preferably) is invisible (so the Environment Background is displayed instead). Well, if there is a wrapper (shadow catcher) floor, first you need to make sure the Wrapper Material > Matte > Matte for Secondaries option is set to ' All secondary rays'.

How to set render dpi in vray for rhino