Blender Git Loki

Cycles: Only use new light sample threshold for new files

This is a late follow-up commit to the light sample threshold changes which
caused difference in rendering all existing .blend files which is not something
we are happy about: it is fine to use new optimized defaults for new files, but
existing ones should always be rendering in the same way as they used to be.

Sorry for the inconveniece, but such thing should have been done to begin with.
If this setting was modified it will not be reset to zero.

Now all render tests should be passing again.

P.S. Also really annoying to bump subversion for such reasons, but currently we
don't have better way to achieve what we want.

Fix T49937: Blender is crashing because of Lamp Data Node

Lamp Data node requires shadow sample array which is only enabled when
Shadows are enabled in the shading settings.

This commit prevents crash but might not give expected render results
in such a configuration.

Gawain: less error checking in release builds

Gawain does very strict runtime checking to help us catch coding errors. Final release should disable most of these checks, so I'm disabling now for all non-debug builds.

When writing Blender code that uses Gawain, always make debug builds and test there! "make lite debug" is my favorite.

OpenGL: mesh edit mode uses edge overlays

Legacy GL uses GL_LINES, modern GL uses the good stuff.

Edit mode still has a long way to go...

OpenGL: support for edge overlays

Has some obvious opportunities for improvement. This is my second attempt. First attempt used MLoopTri and sort of worked...

BMesh: remove redundant edge-split loop initialize

Would always set both first1 and first2.

Forgot this in last commit. (Brick GLSL).

Fix Brick Texture GLSL, broken after Mortar Smooth addition.

BMesh: remove redundant array size

Correct unhelpful comment & some comment edits.

Rename 'disk_is_flagged' -> 'bm_vert_is_manifold_flagged',
since the check is quite specific.

BMesh: minor improvement to edge-split assignment

OpenGL: fade other objects during edit mode

Right now this only affects other objects in wireframe. The idea is to do something similar for other draw modes, and keep focus on the edit object.

As seen at #bcon16

OpenGL: simple mesh edit mode for new viewport

Very very simple. Needs a lot of work to reach "legacy viewport" capabilities.

OpenGL: enable fancy wireframes

Most of this was already in place, just enabling & adding comments.

One fix was needed to make batch uniforms stick between multiple draws.

Added comments to selection outline; no functional changes there.

OpenGL: simple batch of all mesh triangles

Can be used for drawing basic surfaces, hit testing, depth pre-pass, ...

Merge branch 'master' into blender2.8

Conflicts:
intern/cycles/blender/addon/properties.py

Fix compilation error when CUDA toolkit is not installed

After CUDA dynload changes having CUDA toolkit became required
in order to compile Cycles. This only happened due to wrong
default value to the option.

Buildbot: Update copy of buildbot master configuration

Cycles: Remove device settings from performance tab

This was included in the commit by accident, it doesn't belong there.

Depsgraph: Disable timing profile

fix building depsgraph after recent changes