Shader Execution Reordering #395
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This PR adds
dr.reorder_threads(): an explicit way for users to trigger the SER functionality of their GPU without it being tied to a ray-intersection.Related: mitsuba-renderer/drjit-core#145
The function takes a
keyargument that acts as the sorting key for the reordering as well as avalueargument. The latter solely serves a a way for us to tie the operation into the JIT graph.Because the shuffling happens under the hood, there really isn't a way to test this properly other than a smoke test. I've added some basic ones in a new `test_reorder.py file.