Comments (2)
portsmouth
commented on September 28, 2024
We discussed and decided that it would make sense to leave this out for the moment (i.e. leave it up the implementation), as it requires more discussion. It could be possible to add it in later versions.
I do think it would be a good idea to add it at some point, as it's the most sensible/practical way to deal with correctly rendering adjacent dielectrics, which is a very common situation (e.g. vessels of liquid).
It would be convenient to be able author and render such assets consistently across renderers, i.e. we would be defining a standard for nested dielectrics, which I believe would be valuable.
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portsmouth
commented on September 28, 2024
Closing as won't do (for the near term, at least).
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Related Issues (20)
- Merge specular_weight and specular_ior_level HOT 1
- Anisotropic roughness in MaterialX implemetation differs from the specification HOT 1
- Parameters related to volume shading have not been used in MaterialX implementation HOT 1
- Anisotropy direction parametrization HOT 26
- Update transmission in default example material
- Oren-Nayar roughness parametrization is not sufficiently clear HOT 5
- Proposal: Fuzz/sheen can darken as well as lighten HOT 3
- Visual discontinuity at `transmission_depth` of zero HOT 8
- Minor errors in Glossy-Diffuse section
- subsurface weight has incorrect uifolder HOT 1
- Add formula for the average albedo of the F82-tint model HOT 2
- Proposal/Request: Decouple coat roughness from transmission/refraction HOT 4
- Default value of transmission_dispersion_abbe_number is not between uisoftmin and uisoftmax HOT 2
- Layer inconsistencies between the whitepaper and the reference implementation HOT 3
- Proposal: dual specular roughness sliders with mix HOT 3
- Proposal: Remove uifolder prefix from uiname strings HOT 2
- Coat and Fuzz parameter order inconsistent between specification and reference implementation HOT 2
- Specular weight > 1 can cause energy gain in metals, and NaNs in dielectrics HOT 4
- Suggest Hoffman approximations for Fresnel factor of metal under coat/film
- Give an explicit suggested formula for fuzz base-roughening
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