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USD and Alembic export name collision #124263

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opened 2024-07-05 23:41:58 +02:00 by Michael Kowalski · 0 comments
Michael Kowalski commented 2024-07-05 23:41:58 +02:00
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This issue appears in both the USD and Alembic exporters.

The logic for generating valid names for USD and Alembic export does not take into account collisions with existing names in the hierarchy. This can lead to incorrect results if such name collisions cause more than one Blender object or its data to be written to the same path.

To reproduce, load the attached usd_export_name_clash.blend and export to USDA. Note that the USDA contains only one cube instead of two, because the original object/data names "Cube.001" and "Cube 001" are both converted to "Cube_001" by the exporter. A similar error can be observed when converting to Alembic.

image

This issue appears in both the USD and Alembic exporters. The logic for generating valid names for USD and Alembic export does not take into account collisions with existing names in the hierarchy. This can lead to incorrect results if such name collisions cause more than one Blender object or its data to be written to the same path. To reproduce, load the attached `usd_export_name_clash.blend` and export to USDA. Note that the USDA contains only one cube instead of two, because the original object/data names "Cube.001" and "Cube 001" are both converted to "Cube_001" by the exporter. A similar error can be observed when converting to Alembic. ![image](/attachments/8114c442-568f-42fd-a630-16a2d20042e9)
image.png
5.5 KiB
usd_export_name_clash.blend
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Michael Kowalski added this to the USD project 2024-07-05 23:42:00 +02:00
Jesse Yurkovich added
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 labels 2024-07-06 20:17:25 +02:00
Bart van der Braak added
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 labels 2024-08-14 12:57:45 +02:00
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Reference: blender/blender#124263
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