Difference between V-Ray RT GPU render (OpenCL) and V-Ray Adv CPU render

[dsensden]

Hello! Help me to understand.

1) Why the same settings (lighting and materials), obtained different results?

2) How to improve the picture quality of the V-Ray RT, when I`m using the GPU Render OpenCL?

[ScottDeW]

Keep in mind that V-Ray RT and V-Ray Adv are two completely separate, and different, rendering engines. Hence why they do not look the same when they render. I wouldn't try to switch between the two much. You'll either want to use V-RayRT or V-Ray Adv. Some people do like to use RT to do some initial set-up of lights, but that's about as far as I would take it.

 

As for the picture quality for V-RayRT, you need to let the image render for a longer amount of time. Think of it as the rendering develops much like a polaroid picture. The longer it goes, the less noise (better quality) you'll get.