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have a look at what egui creator (and his team) been doing with rerun [0] Egui seems well suited to render even tens of thousands pointcloud with wgpu backend.

• wumpf 4y ago
  Rerun dev here :). Yes, we're using egui with its wgpu backend! As someone else pointed out it is backend agnostic - it essentially generates triangles & textures in GPU friendly way and passes those down to a backend implementation. All the visualizations like the 3D scenes with point clouds etc. are rendered with our open-source in-house renderer ("re_renderer") which itself is then passing wgpu surfaces/commands to the egui wgpu backend that composites everything together then.