feature request: support for OptiX Denoiser

[natevm]

When using the high level OWL api, it's currently unclear how to implement the OptiX denoiser, as users do not have direct access to the optix context required for optixDenoiserCreate.

I could see adding support for the denoiser in one of two ways. Either 1, we could add some function which returns the current optix context handle to the end user. Or 2, we could implement the optix denoiser within OWL and define some abstraction API somehow.

[diwot]

Hello, is there support by OWL for the optix denoiser by now? I just came accross a release page of optix 7.7 and it looks like the denoiser can even do upscaling now which sounds very promising. I would appreciate if setting up the denoiser becomes as easy and intuitive as the rest of OWL is.