Rendering regression with v26.03-alpha

[ld-kerley]

Reporting on behalf of Maddy Adams.

There appears to be a rendering regression with the Metal version of Storm between v25.08 and the new v26.03-alpha. Maddy also tested with Hydra 1.0 enabling the env-var USDIMAGINGGL_ENGINE_ENABLE_TASK_SCENE_INDEX=0. Assets and images are attached below.

Following images were rendered directly with usdrecord <path-to-usdz-file> <path-to-output-image>

assets.zip

Biplane

v25.08

v26.03-alpha

v26.03-alpha with USDIMAGINGGL_ENGINE_ENABLE_TASK_SCENE_INDEX=0)

mxmetallic

v25.08

v26.03-alpha

v26.03-alpha with USDIMAGINGGL_ENGINE_ENABLE_TASK_SCENE_INDEX=0)

[jesschimein]

Filed as internal issue #USD-11873

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