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This commit makes skinned meshes batchable on platforms other than WebGL 2. On supported platforms, it replaces the two uniform buffers used for joint matrices with a pair of storage buffers containing all matrices for all skinned meshes packed together. The indices into the buffer are stored in the mesh uniform and mesh input uniform. The GPU mesh preprocessing step copies the indices in if that step is enabled. On the `many_foxes` demo, I observed a frame time decrease from 15.470ms to 11.935ms. This is the result of reducing the `submit_graph_commands` time from an average of 5.45ms to 0.489ms, an 11x speedup in that portion of rendering.  This is what the profile looks like for `many_foxes` after these changes.  --------- Co-authored-by: François Mockers <mockersf@gmail.com> |
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Bevy PBR
