Blender Git Loki

Cycles: Rename Denoiser to DenoiserPipeline

The goal is to have clarity on entity names.

The proposed/desired convention:

- Device: low-level "glue" logic, which takes care of running
functions on a particular device. Algorithm implementation
does not belong to device.

- Denoiser: breaks down specific denoising algorithm into a
function calls which happens on a device. It does not belong
to the device because denoising can happen regardless of where
noisy image came from: could be file, could be single render
buffer, could be multiple render buffers rendered by multiple
devices.

- DenoiserPipeline: takes care of performing all steps needed to
denoise a sequence of frames.

In an ideal world DenoiserPipeline will implement a frame accessor
of some sort, and use Denoiser to perform actual denoising on a
configured device/denoising algorithm.

This change only modifies the class name, making room for implementing
an actual denoising algorithms as dedicated entities. Further cleanup
in naming and structure is needed. It will be revisited once the
cross-frame denoising will be worked on as an official core
functionality.