"Invisible" objects like skull caps show up in fog/atmosphere.
Charles DeDaugge
Posts: 1
I'm not sure if I'm using the right terminology, but I'm having an issue with transparent or invisible surfaces taking on a dark tint in renders when using volumetric atmosphere. Specifically skull caps, and most recently the transparent plane for MMX Smoke Trails. I haven't seen this problem mentioned elsewhere, so I'm hoping its user error. Any insight would be much appreciated!
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I have seen the same issue once before so I went back to the old scene in hopes of finding out why it happened in that scene, and not any future scenes for me since. Sadly, I have not been able to reproduce the same issue in the old scene, despite nothing having changed, except the version of DS that I am using. Both sets of promos for MMX Smoke Trails 1 & 2 make use of a volumetric atmosphere and did not produce any sort of issue for me.
A sample image would help.
Here are a couple of examples. They're cropped from larger images, but hopefully you can see what I'm talking about.
Hey Charles,
Yes this is a thing that happens with atmospheric scattering and skull caps.
There is a few things to try.
1. Try setting the opacity of the skullcap to 0 making it invisible. Some hairs that is fine with, but it may make your character look like thye need Rogaine.
2. If the hair piece has an adjust all try scaling it down 1 or 2% if not seee 3.
3. Adjust the scap size down 1 or 2%. Don't set just the root of the hair that is at the waist. Drill down on the hair piece until you get to the head node.
4. Make sure the skull cap is using and iray or iray uber shader.
5. Copy and paste your characters head shader settings to the cap, test render. If it's gone away then just reapply the cap maps where needed.
There is something else I did once to fix it when those didn't work but can't remember off the top of my head and would have dig up the old duf file. So let me know if those help if not I'll dig that up.