Avoid performance issues when displaying many poses in asset view template #92922
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Reference: blender/blender#92922
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If the list of poses is relatively big, the asset view slows down animation playback performance considerably. This is caused by the scaling, possibly also the drawing of all the preview images. Even preview images that are out of view bounds will be scaled and drawn.
Plan of Attack
Plan is to do 3 improvements. Each of them is enough to mitigate the issue significantly, some make the performance impact disappear almost entirely in tested production files. All 3 combined should bring a nice general boost and give us some headspace to avoid icon/preview drawing from becoming a bottleneck in the future again.
2b394e1108)aa0ecd1791)Cache the GPU textures of visible preview images.Added subscriber: @JulianEisel
Added subscriber: @GeorgiaPacific
Added subscriber: @EAW
This issue was referenced by
aa0ecd1791Changed status from 'Needs Triage' to: 'Resolved'
This shouldn't be an issue anymore with the listed changes. I did also work on GPU texture caching, but keeping them cached without filling memory is difficult. Was trying to free textures that are not drawn currently, which is quite difficult since we only redraw some regions usually, not all. Doing this properly is complicated and IMO not worth it. We should be in a pretty good state for now.