Unusual render flaw

V-Ray for SketchUp V-Ray for SketchUp :: General
1

I’m experiencing some odd flaws in the render phase.
on matirialed texture popping up something that looks like a bobble
notice the columns in the image below

2

Re: Unusual render flaw

Thats probably something due to very bright pixels. In Color Mapping, check Clamp Output and SubPixel Mapping. That should help out

3

Re: Unusual render flaw

Clamp Output, SubPixel Mapping
i’m not familiar with those concepts :'(, could you please explain (1. where ???, 2. how ???)

4

Re: Unusual render flaw

Its in the Color Mapping rollout in the V-Ray Options.

Clamp Output limits all of the colors so that none of them are brighter than white. This can help sometimes when working with bright aspects within a scene (the sun being the typical reason).

SubPixel Mapping basically calculates whether a given pixel is brighter than white as it takes the samples. This means that it won’t oversample a pixel when its already too bright and will also make the end result smoother.

5

Re: Unusual render flaw

Thank you Dalomar