AO between meshes disapear after enabling Ray Tracing?
polycounter lvl 2
Any idea on how to get some type of AO between the meshes?
I'm able to get some AO without raytracing (1st picture) but once Ray Tracing is enable it's no more (2nd picture)...
Most of the assets on the render are textured with a trimsheet.
I'm able to get some AO without raytracing (1st picture) but once Ray Tracing is enable it's no more (2nd picture)...
Most of the assets on the render are textured with a trimsheet.
Replies
As far I know, raytracing and raster are two very different renderer, so the result will likely not match. Here is the Toolbag wiki entry: "Lighting"
What AO option do you use when using the raster render (raytracing off), Screen-space or Raytraced? I wonder if with the latter, the result is comparable.
Maybe from years looking at real-time renderings, one is used to a certain aesthetic, even if it's not accurate.
AO is a simple (not physically accurate) rendering technique that will darken any surfaces that are near to other surfaces. AO typically produces something closer to a dirt effect than a realistic lighting effect.
In ray-tracing mode, global illumination is used instead - this accurately simulates how light bounces from one surface to another - sometimes this means crevices get darker, but it also means that light bounces and a bright surface next to a darker one will generally mean the brightness of the dark surface increases rather than darkens. It’s an important physical phenomenon to replicate if you’re interested in realistic lighting. The bounce count setting controls how many times light bounces, higher settings are more accurate but can reduce performance.
As Andrew mentioned, you can render out an AO render pass if you want and composite that in post for a stylized/non-realistic effect - just add it to the render pass list in the render object settings.