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Material bindings are not honored on scenegraph instances inside of point instances #1449

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asluk opened this issue Feb 11, 2021 · 1 comment
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Material bindings are not honored on scenegraph instances inside of point instances #1449

asluk opened this issue Feb 11, 2021 · 1 comment

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@asluk
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asluk commented Feb 11, 2021

Description of Issue

Materials bound to point instancer prototypes are not honored by scenegraph instances within those protoypes.

Steps to Reproduce

grass_scatter0.zip

  1. Unzip the attached archive.
  2. Open grass_scatter0/layout/grass_scatter_layout.usda in usdview
  3. The spheres all draw with no materials.
  4. Select /grass_plain/tree_instancer/Prototypes/tree_1/tree_1_geo/tree_1_leaves/obj_0 in the Browser
  5. in the interpreter, usdviewApi.prim.SetInstanceable(False)
  6. The spheres will turn blue, now honoring the bound UsdPreviewSurface

System Information (OS, Hardware)

Windows

Package Versions

current dev branch

Build Flags

python build_scripts\build_usd.py _install
@jilliene
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Filed as internal issue #USD-6570

marktucker added a commit to sideeffects/USD that referenced this issue Sep 19, 2021
@marktucker
Fix display of materials on instanceable prototype on point instancers.
d8d76de 
The fix for PixarAnimationStudios#1449 looks like it broke material bindings in the case where
a point instancer prototype was marked as instanceable, but the material
was bound inside the prototype (on an instance proxy). The bound material
was being expressed with the instance proxy path instead of the prototype
path, which is how the material is actually identified in hydra. So now
the fix for PixarAnimationStudios#1449 is only applied to the instanceable prim, not the
contained instance proxy prims.

Fixes PixarAnimationStudios#1626
marktucker added a commit to sideeffects/USD that referenced this issue Sep 19, 2021
@marktucker
Fix display of materials on instanceable prototype on point instancers.
58dbd47 
The fix for PixarAnimationStudios#1449 looks like it broke material bindings in the case where
a point instancer prototype was marked as instanceable, but the material
was bound inside the prototype (on an instance proxy). The bound material
was being expressed with the instance proxy path instead of the prototype
path, which is how the material is actually identified in hydra. So now
the fix for PixarAnimationStudios#1449 is only applied to the instanceable prim, not the
contained instance proxy prims.

Fixes PixarAnimationStudios#1626
@marktucker marktucker mentioned this issue Sep 19, 2021
Closed
kohakukun added a commit to autodesk-forks/USD that referenced this issue Nov 28, 2024
@kohakukun
[hdx] Add additional function for MSAA update (PixarAnimationStudios#…
ee4c436 
…1449)
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@asluk @jilliene