Blender Git Loki

Compositor: Add OIDN prefiltering option to Denoise node

It's equivalent to the OpenImageDenoise prefiltering option in Cycles.
See D12043.

Prefilter modes:
- None: No prefiltering, use when guiding passes are noise-free.
- Fast: Denoise image and guiding passes together. Improves quality when
guiding passes are noisy using least amount of extra processing time.
- Accurate: Prefilter noisy guiding passes before denoising image.
Improves quality when guiding passes are noisy using extra
processing time.

Reviewed By: #compositing, jbakker, sergey

Differential Revision: https://developer.blender.org/D12342

Compositor: Fix Alpha Over node ignoring emissive colors

It was an issue on Full Frame mode only.

Compositor: Fix crash exporting buffers on debug

ImBuf allocates 4 channels, use copying to support buffers
with 1 and 3 channels.

Merge branch 'master' into asset-greasepencil

LineArt: Add offset option in object_add.

Sculpt: more brush engine stuff; do not test.

Pushing this commit early due to computer
weirdness

Sculpt: flushed out brush channel RNA and made basic UI

Only show icon to add catalogs for active catalog tree item

Fix crash reading files with an active catalog set

Merge branch 'master' into soc-2020-io-performance

Fix mistake with last commit - it didn't compile.

Sculpt: Added some icons and commit icon_geom.blend into the branch

Help with icons would be appreciated. The
scene project icon kind of came out looking
like a band-aid.

Disable threading for sculpt project brush

Fix compile error

Sculpt: Flesh out RNA wrapping of BrushChannels

Merge remote-tracking branch 'origin/temp_bmesh_multires' into sculpt-dev

Merge branch 'master' into temp_bmesh_multires

Merge branch 'master' into sculpt-dev

Commit current working copy; having
weird file system issues

Fix T91489: Cycles X crash when running with MESA_NO_ERROR