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# Objective - First step towards #15558 ## Solution - Rename `get_vertex_buffer_data` to `create_packed_vertex_buffer_data` to make it clear that it is not "free" and actually allocates - Compute length analytically for preallocation instead of creating the buffer to get its length and immediately discard it - Use existing vertex attribute size calculation method to reduce code duplication - Fix a bug where mesh index data was being replaced by unnecessarily newly created mesh vertex data in some cases - Overall reduces mesh copies by two. We still have plenty to go, but these were the easy ones. ## Testing - I ran 3d_scene, lighting, and many_cubes, they look fine. - Benchmarks would be nice, but this is very obviously a win in perf and correctness. --- ## Migration Guide - `Mesh::create_packed_vertex_buffer_data` has been renamed `Mesh::create_packed_vertex_buffer_data` to reflect the fact that it copies data and allocates. ## Showcase - look mom, less copies |
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