a8767d943d
Finding which F-Curve (if any) drives the blend factor or volume of a strip is fairly expensive (it has to search all the curves to find the one matching the name). Speed that up by: - Doing the f-curve lookups in parallel for all the visible strips, - The found curve is stored in StripDrawContext, so this also avoids finding the "volume" curve twice for the same strip (once for waveform, once for fcurve overlay). Viewing Sprite Fright Edit v135 whole timeline on Ryzen 5950X (Win10/VS2022): timeline repaint 18.5ms -> 7.7ms Pull Request: https://projects.blender.org/blender/blender/pulls/128015
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