Enable Zeltner sheen #217
Enable Zeltner sheen #217
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This changelist enables Zeltner sheen in the reference implementation of OpenPBR, leveraging the new functionality in MaterialX 1.39. Additionally, the open_pbr_velvet.mtlx example has been updated to account for the visual differences between Conty-Kulla and Zeltner sheen.
| <input name="fuzz_roughness" type="float" value="0.2" /> | ||
| <input name="fuzz_roughness" type="float" value="0.5" /> |
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Is this empirical, or is there a closed form to fit Conty-Kulla on Zeltner one ?
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I'm not aware of a closed-form solution, but we can definitely put together a good approximation and include it in a future shader translation graph from standard_surface to open_pbr_surface.
For now, I'm just estimating the visual equivalent of the original settings with Zeltner sheen, in order to roughly maintain the look of the example material in the new model.
This will match the very first release of MaterialX 1.39, which is technically still in development, with a release planned for the end of this month. |
jstone-lucasfilm
merged commit 5bb9a13
into
AcademySoftwareFoundation:dev_1.1
This changelist enables Zeltner sheen in the reference implementation of OpenPBR, leveraging the new functionality in MaterialX 1.39.
Additionally, the open_pbr_velvet.mtlx example has been updated to account for the visual differences between Conty-Kulla and Zeltner sheen.