Timeline: draw cache in overlay so that it stays in sync with actually cached data #105986
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Reference: blender/blender#105986
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Delete Branch "JacquesLucke/blender:redraw-cache-in-timeline"
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Currently, when the animation is playing and the set of cached frames change the timeline is out-of-date which can be confusing.
Not sure if this can have a significant performance impact on larger files, I kind of doubt it, but don't know.. Anyone has a good idea of how to redraw the cached frames only when necessary?
When drawn as an overlay each refresh would redraw the timeline. I quickly looked at the current state of the cache drawing and think it is fine for smaller scenarios. I can imagine that we might want to consider using a shader at some point as currently the data is iterated, extracted and drawn each time.
We should first let this become an performance bottleneck as
imm
calls are buffered.Sequencer also does it in the overlay (See
sequencer_draw.c#draw_cache_view
for its implementation).IMO proposed solution is fine for now.
I've done a quick test with a keyframe-heavy file, and I don't see any significant performance drop.
Keyframes aren't drawn as overlay and should not impact what is changed here.