Fix #114828: Don't rebuild outliner tree when frame scrubbing #114845
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Julian Eisel
Nathan Vegdahl
Sybren A. Stüvel
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Reference: blender/blender#114845
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Delete Branch "ChrisLend/blender:fix_outliner_tree_rebuilt"
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Before this PR, whenever the frame changed during scrubbing, the whole outliner tree would be rebuilt.
This rebuilding did not happen when playing back.
This was a major bottleneck, especially on scenes with many objects.
As far as I can tell there is no need to do that, since there is no function that changes the scene structure when the frame is changed.
The only way to do that is to add a python handler for
post_frame_change, but that also fires when playing back.The performance gains can be quite significant. I've made a scene with 32.000 cubes and the
wm_draw_updatefunction goes from~60ms
to
~30ms
Is there a test build for this?
@sanek122005 good idea, will take a while though
@blender-bot package
edit: seems like the buildbot is offline atm. Will try again in a few hours
Failed to start build, can't connect to buildbot.
I also don’t expect issues, so this LGTM. Even if there appears one, we can probably make the tagging a bit smarter (don’t rebuild on every frame change).
@blender-bot package
Package build started. Download here when ready.
@blender-bot package windows
the windows build failed to compile on a file unrelated to this PR. Merged main to try again
Package build started. Download here when ready.
@blender-bot package windows
trying again, buildbot didn't start a windows build
Package build started. Download here when ready.
Looks good to me. I agree a rebuild shouldn't be needed here. And as you said even if a frame change does trigger something (e.g. via a handler) that would then require a rebuild, that itself should produce another signal that does trigger a rebuild.
LGTM!