I had a job for this issue, but after hours of debugging I think there might be a bug?
I have a scene with emissive, opacity and a glowLayer.
For this post though, I have one body piece which contains transparency and a head piece which contains no transparency.
The issue is the glow layer appearing through the opaque part of the mesh as soon as I add transparency.
Maybe related, if I apply the same texture/material on a mesh with no transparency, the glowLayer appears stronger (still appears through the mesh though).
The glow layer appearing through the head:
In red, the transparent area, and in blue, arrows showing the difference in glowLayer intensity.
In the repro above, you can see two issues:
- You can see the glowLayer appearing through the mesh of the head; (The head has no transparency)
- You can see the glowLayer is not as bright and not as strong on the body as soon as a part of the mesh is transparent.
While investigating the second issue, I noted the glowLayer in the body piece almost looked “behind” the mesh
Things I’ve tried:
renderingGroupId = 0on Glowlayer and
1on the meshes
@labris suggested I use a different texture for the transparent meshes but that’s not an option given we’ll be having hundreds on these meshes and we’re assuming their names are unknown.
I have a feeling this is a bug, but I could also just be dumb. Any thoughts?