Blender Git Loki

GPencil: Cleanup - Rename BKE function

DRW: Color Management: Rework code to accept new color transform needed

Overlay: Add other background types (checker and gradient)

Merge branch 'greasepencil-object' into greasepencil-refactor

Merge branch 'master' into greasepencil-object

Conflicts:
source/blender/makesdna/DNA_brush_types.h

Overlay: Cleanup Image background implementation

The background images are now rendered normally on a cleared
canvas. They then get masked by the render when the background
is drawn with a special blend mode.

Draw-layers: Get it all to work!

Create the framebuffers for caching viewport rendering results, and
"composite" all layers together once each is drawn. Compositing is a bit
of a big word for this, since we basically just draw all layers on top
of each other with alpha blending.
After talking with Jeroen, we decided to keep things simple for now, we
can add more features (like per-layer color-management) and do small
improvements later.

GPencil: Cleanup some loops

DRW: Color Management: Do some rearangement of the draw code

This puts the color management functions inside one file.

We group all post transform drawing into DRW_draw_callbacks_post_scene.

Overlay: Fix background covering the outline

Merge branch 'undo-experiments' into undo-experiments-idnames

Merge branch 'master' into undo-experiments

Merge branch 'master' into temp-gizmo-decoupled-redraws

Merge branch 'master' into wm-drag-drop-rewrite

Merge branch 'soc-2019-openxr' into vr_scene_inspection

Merge branch 'temp-openxr-blenderside' into soc-2019-openxr

Fix linking after recent build system changes in master

Merge branch 'temp-openxr-ghostxr' into temp-openxr-blenderside

Merge branch 'temp-openxr-directx' into temp-openxr-ghostxr

Merge branch 'temp-openxr-buildstuff' into temp-openxr-directx