Description

Fixes # (issue)

Testing

My code follows the style guidelines of this project
My changes generate no new warnings
My code also compiles for cuda_* and llvm_* variants. If you can't test this, please leave below
I have commented my code
I have made corresponding changes to the documentation
I have added tests that prove my fix is effective or that my feature works
I cleaned the commit history and removed any "Merge" commits
I give permission that the Mitsuba 3 project may redistribute my contributions under the terms of its license