Blender Git Loki

Remove "memory limit" cache method

This was not implemented, and is not straightforward to implement
anyway.

Fix indexing in prefetch cache

Remove debug print, quiet warning

Remove hack to read normals properly

It was due to a modification in triangle winding...

Merge branch 'master' into cycles_procedural_api

USD Import: remove usd_util files.

Moved the two create_reader() implementations from usd_util.(h|cc)
to static functions in UsdStageReader and removed the usd_util
files from the project.

LineArt: Guard modifiers from depsgraph when baking.

LineArt: Bake canceling now operative.

LineArt: Bounding area duplicated code removal.

LineArt: Naming and comments clean up.

Merge branch 'master' into sculpt-dev

USD Import: stage reader validation and cleanup.

Added USDStageReader validation and guard against null
stage in the USDStageReader destructor.

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

format

Fix issue with normals

Use full "Fill Type" text

Add working cone node based on cylinder code

USD Import: remove UsdPrimReader stage member.

The UsdPrimReader class doesn't need a stage pointer as a
member because the stage can implicitly be accessed
through the prim itself, as long as the prim is valid.
I removed the UsdPrimReader::stage_ member and updated the
relevant constructors and function calls. Also, updated
the various readers to construct schemas directly from
the contained prim, e.g., pxr::UsdLuxRectLight rect_light(prim_)

Merge branch 'master' into tmp-vulkan

Attempt 2 to silence warning.