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[feature] Anisotropic reflections #57

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Derpius opened this issue Sep 3, 2022 · 2 comments
Closed

[feature] Anisotropic reflections #57

Derpius opened this issue Sep 3, 2022 · 2 comments
Labels
binary module Issues relating to the binary module BSDF Issues relating to the VisTrace BSDF enhancement New feature or request
Milestone
v0.12.0

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@Derpius
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Derpius commented Sep 3, 2022

Describe the solution you'd like
Replace yocto-gl's isotropic distribution and geometry terms with anisotropic versions.

Additional context
https://jcgt.org/published/0007/04/01/paper.pdf
@Derpius Derpius added enhancement New feature or request binary module Issues relating to the binary module labels Sep 3, 2022
@Derpius Derpius added this to the v1.0.0 milestone Sep 3, 2022
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Derpius commented Sep 4, 2022

Converting roughness and anisotropy parameters to x and y roughness
image

@Derpius Derpius modified the milestones: v1.0.0, v0.12.0 Sep 9, 2022
@Derpius Derpius added the BSDF Issues relating to the VisTrace BSDF label Sep 15, 2022
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Derpius commented Sep 15, 2022

After further research it seems there are already established formulas for implementing a mapping from anisotropy+roughness to x and y roughness that are more artist friendly

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Labels
binary module Issues relating to the binary module BSDF Issues relating to the VisTrace BSDF enhancement New feature or request
Projects
VisTrace
Status: Done
Milestone
v0.12.0
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@Derpius