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Maniphest T76687

[Mantaflow] low domain transformation performance
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Description

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: rB8956e9e5f6c0
Worked: (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:

Revisions and Commits

rB Blender
rB952279a36678 Fix T76687: [Mantaflow] low domain transformation performance

Related Objects

Event Timeline

Pavel (Pavel_Blend) created this task.May 12 2020, 4:46 PM
Eitan Traurig (EitanSomething) added a project: Nodes & Physics.May 12 2020, 4:54 PM
Eitan Traurig (EitanSomething) added a project: Physics.
Eitan Traurig (EitanSomething) added a subscriber: Sebastián Barschkis (sebbas).May 12 2020, 5:18 PM
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).May 13 2020, 3:09 PM

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 (Pavel_Blend), can you test changing the cache to Modular or skipping a few frames ahead (frame 10 for example)?

@Sebastián Barschkis (sebbas), we could update the simulation only if G.moving == 0.
I'm not sure if this is really a bug.

Pavel (Pavel_Blend) added a comment.May 13 2020, 4:04 PM

@Germano Cavalcante (mano-wii) yes, switching cache mode to modular helped me.

Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Confirmed.May 13 2020, 4:49 PM
Germano Cavalcante (mano-wii) changed the subtype of this task from "Report" to "Bug".

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.

Germano Cavalcante (mano-wii) merged a task: T77566: Mantaflow > Translating / Rotating / Scaling a fluid Domain is laggy.Jun 9 2020, 4:12 PM
Germano Cavalcante (mano-wii) added subscribers: Wykrhm Reddy (wykrhm), Ankit Meel (ankitm).
Arken awarded a token.Jun 23 2020, 9:58 PM
Sebastián Barschkis (sebbas) closed this task as Resolved by committing rB952279a36678: Fix T76687: [Mantaflow] low domain transformation performance.Jul 13 2020, 4:16 PM
Sebastián Barschkis (sebbas) claimed this task.
Sebastián Barschkis (sebbas) added a commit: rB952279a36678: Fix T76687: [Mantaflow] low domain transformation performance.
Sebastián Barschkis (sebbas) added a comment.Jul 13 2020, 4:18 PM

@Germano Cavalcante (mano-wii) Yes, the check for that flag seemed like a good idea to me too!