Saeed Hadadan

[❔ other question] Memory leakage when doing masked assignment

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## Summary **Strange memory leakage in case of masked assignment!** ## System configuration I am using a version of broken branch! ## Description I have defined a method called `sample2`...

[✨ feature] Implement `eval_roughness()` for most BSDFs

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## Description Introduce method `eval_roughness()` similar to eval_diffuse_reflectance() ... Fixes #454 ## Testing Tested on a two-sided BSDF, the test is named `test04_eval_roughness` in `test_twosided.py` ## Checklist - [x] My...