Random rectangles 'missing' when rendering with optix + motion blur #108300
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Reference: blender/blender#108300
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System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 532.03
Blender Version
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash:
1be25cfff18bWorked: (newest version of Blender that worked as expected)
Edit: I downloaded 3.5.1 and It still occurs there
Short description of error
When I render a scene that uses motion blur with optix, there are randomly rectangles/sections where it skips straight to the background. Its random and only exists in some frames, and does not appear when using cuda. The object it appears on (or near) has motion blur disabled.
Exact steps for others to reproduce the error
Its very random and I'm not sure how to reproduce it in a simpler scene. I've had it happen in several different complex scenes and its always been an issue when ever theres an object that has motion blur disabled
Optix with Motion Blur
Optix without Motion Blur
Cuda with Motion Blur
Hi @Diana-G , could you give us a simplified file? likely with only that sword with animation, if you can still reproduce? Thanks!
Heres a 'simplified' version of the scene. While reimporting I noticed that the object
Sphere.002was causing the issues to reappear. Its an animated sphere which has a scale of 0 when it is not meant to be visible. Frame 1 has the issue visibleCan confirm. This seems to be due to
Sphere.002object which has particle system(s)