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8 Commits

Author SHA1 Message Date
Brecht Van Lommel
e84b377eae Refactor: Simplify subd patch code 
* Remove unused linear patch normals
* Renaming for consistency and clarity
* Shuffle order of function definitions

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:20 +01:00
Brecht Van Lommel
42846caca1 Cycles: Adaptive subdivision support for modifier options 
* Use creases
* Boundary interpolation
* UV interpolation

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:17 +01:00
Brecht Van Lommel
62201eb372 Cycles: Adaptive subdivision smooth UV interpolation 
Using OpenSubdiv FVar interpolation.

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:10 +01:00
Brecht Van Lommel
07b60c189b Cycles: Perform attribute subdivision on the host side 
* Add SubdAttributeInterpolation class for linear attribute interpolation.
* Dicing computes ptex UV and face ID for interpolation.
* Simplify mesh storage of subd primitive counts
* Remove kernel code for subd attribute interpolation
* Remove patch table packing and upload

The old optimization adds a fair amount of complexity to the kernel, affecting
performance even when not using the feature. It's also not that useful as it
does not work for UVs that needs special interpolation. With this simpler code
it should be easier to make it feature complete.

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:07 +01:00
Brecht Van Lommel
afd139f07e Refactor: Split OsdMesh off from OsdData 
Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:05 +01:00
Brecht Van Lommel
7685b9016a Cycles: Use fixed instead of adaptive subdivision max isolation level 
Same as what Blender does by default.

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:03 +01:00
Brecht Van Lommel
e9a20b8ce8 Refactor: Better handling of OpenSubdiv namespace 
Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:58:01 +01:00
Brecht Van Lommel
189efd8eeb Refactor: Move more subdivision code into subd/ 
No logic or functional changes.

Pull Request: https://projects.blender.org/blender/blender/pulls/135681
 2025-03-11 20:57:59 +01:00