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Fix #113325: Zero-sized curve leads to OptiX error #115044

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Patrick Mours merged 1 commits from pmoursnv/blender:fix_113325 into main 2023-11-17 17:21:08 +01:00
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Patrick Mours commented 2023-11-17 14:49:08 +01:00
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Empty hair geometry in Cycles may still report having one curve, even when there are no actual segments in that curve. This caused an attempt to build an acceleration structure with zero primitives, which due to other setup OptiX rejected with an error.
Fix that by checking the number of segments rather than the number of curves in the hair geometry, since the former will always be zero for empty geometry.

Empty hair geometry in Cycles may still report having one curve, even when there are no actual segments in that curve. This caused an attempt to build an acceleration structure with zero primitives, which due to other setup OptiX rejected with an error. Fix that by checking the number of segments rather than the number of curves in the hair geometry, since the former will always be zero for empty geometry.
Patrick Mours added 1 commit 2023-11-17 14:49:23 +01:00
970a5829f0 Fix #113325: Zero-sized curve leads to OptiX error 
Empty hair geometry in Cycles may still report having one curve, even when
there are no actual segments in that curve. This caused an attempt to build
an acceleration structure with zero primitives, which due to other setup
OptiX rejected with an error. Fix that by checking the number of segments
rather than the number of curves in the hair geometry, since the former will
always be zero for empty geometry.
Patrick Mours requested review from Brecht Van Lommel 2023-11-17 14:49:43 +01:00
Brecht Van Lommel approved these changes 2023-11-17 15:04:34 +01:00
Brecht Van Lommel commented 2023-11-17 15:35:19 +01:00
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We'll want to backport this to 3.3, 3.6 and 4.0. The relevant issues to list the commit can be found on the milestones page.

We'll want to backport this to 3.3, 3.6 and 4.0. The relevant issues to list the commit can be found on the milestones page.
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Patrick Mours merged commit 697114c4b6 into main 2023-11-17 17:21:08 +01:00
Patrick Mours deleted branch fix_113325 2023-11-17 17:21:10 +01:00
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