[Mantaflow] low domain transformation performance #76687
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Reference: blender/blender#76687
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System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: AMD Radeon HD 7560D ATI Technologies Inc. 4.5.13399 Core Profile Context 15.201.1151.1008
Blender Version
Broken: version: 2.83 (sub 15), branch: master, commit date: 2020-05-11 19:18, hash:
8956e9e5f6Worked: (newest version of Blender that worked as expected)
Short description of error
If you move, rotate or scale the domain, then the performance of the blender decreases.
Exact steps for others to reproduce the error
Playable in any scene:
mantaflow_domain_transforms.mp4
Added subscriber: @Pavel_Blend
#77566 was marked as duplicate of this issue
Added subscriber: @sebbas
Added subscriber: @mano-wii
This must be happening because by default the cache type is now Replay. And this cache tries to recalculate the simulation with each change.
@Pavel_Blend, can you test changing the cache to Modular or skipping a few frames ahead (frame 10 for example)?
@sebbas, we could update the simulation only if
G.moving == 0.I'm not sure if this is really a bug.
@mano-wii yes, switching cache mode to modular helped me.
Changed status from 'Needs Triage' to: 'Confirmed'
I will confirm it as a bug for now as heavy operations like these should not be performed while we are editing the objects in a scene.
Added subscribers: @Wyk, @ankitm
This issue was referenced by
952279a366Changed status from 'Confirmed' to: 'Resolved'
@mano-wii Yes, the check for that flag seemed like a good idea to me too!