Model clipping rework foundation

[mzschwartz5]

Description

This PR is the model-and-3d-tile version of this earlier PR for globe/terrain rendering. A Model now calls the new requestRectangleData API of its ClippingPolygonCollection to create textures for vector-based polygon clipping.

The next PR wires up these textures as shader uniforms and makes the shader changes to use them / swap out SDF-based clipping for vector-based clipping.

Issue number and link

TODO: needs issue

Testing plan

There are no behavioral changes here -- only more data added to the Model class. Regression testing on your favorite model sandcastle (and/or 3D tiles) is sufficient.

Author checklist

• I have submitted a Contributor License Agreement
• I have added my name to CONTRIBUTORS.md
• I have updated CHANGES.md with a short summary of my change
• I have added or updated unit tests to ensure consistent code coverage
• I have updated the inline documentation, and included code examples where relevant
• I have performed a self-review of my code

AI acknowledgment

• I used AI to generate content in this PR
• If yes, I have reviewed the AI-generated content before submitting

If yes, I used the following Tools(s) and/or Service(s):

If yes, I used the following Model(s):

PR Dependency Tree

• PR Clipping polygon buffer migration #13623
  • PR Vector Textures for Polygon Clipping #13635
    • PR Clipping texture plumbing #13636
      • PR Shader rework for terrain polygon clipping #13637
        • PR Remove SDF polygon clipping from Globe #13638
          • PR Model clipping rework foundation #13641 👈
            • PR Model polygon clipping shader impl #13647
              • PR Remove polygon clipping sdf path #13654
                • PR Clipping Polygon Holes #13660
                  • PR ClippingPolygon immutable positions (performance) #13665

This tree was auto-generated by Charcoal

[github-actions]

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