Blender Git Loki

Cleanup: clarify code comments, use same logic for future GPU device

Cycles X: some refinements for the make new Random Walk mode

* Make scattering radius more similar to the old one, for easier comparison
between modes and converting existing files.
* Change default subsurface mode to Random Walk in startup file.
* Fix incorrect clamping in OSL closure.

Fix crash cancelling render in middle of scene update

Particularly likely with preview renders. Detect cancel state after
scene update rather than using incomplete scene for render.

Remove GArray, futher improvement

Merge branch 'master' into asset-greasepencil

FFMPEG: Fix building with older versions that need FFMPEG_USE_DURATION_WORKAROUND

VSE: Flush audio encode after finishing video export

We didn't flush audio after encoding finished which lead to audio
packets being lost.

In addition to this the audio timestamps were wrong because we
incremented the current audio time before using it.

Reviewed By: Richard Antalik

Differential Revision: https://developer.blender.org/D11916

EEVEE: LightGrid: Fix divide by zero leading to wrong world lighting

This integer divide by zero was evaluated to 0 on all platform but apple,
where it yields 1. The world lighting would then sample the 1 sample of the
first grid instead of its own sample.

commit prior to small cleanup

Cleanup.

Cleanup, rename some members, comments.

Cleanup, unused function.

Use loose geometry lengths from MeshRenderData.

Merge branch 'master' into temp-runtime-node-def

Cleanup, comments.

Cleanup: reuse existing loose geometry facility.

Curve Pen: Make cyclic only if more than 2 points

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

LineArt: Fix mesh freeing for obi->original_me

LineArt: Stroke Offset fixes