Blender Git Loki

GPencil: Pass Glow color as vec4

GPencil: More changes to Blend modes in Glow

GPencil: Patch old Glow effect setting size and opacity

GPencil: UI - Put Threshold before Glow color

GPencil: Change Glow Radius to Size X/Y

Merge branch 'soc-2019-openxr' into vr_scene_inspection

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

GPencil: Cleanup code

GPencil: Disable Glow Under if Regular mode is selected

Remove own GPUViewport and GPUContext binding

Draw-manager handles these as needed now, so we can remove this.

initial automatic rebuild when the node tree changes

add userdata to bNodeType

GPencil: More changes to Glow Blend modes

Still some issues

Don't create framebuffer for VR view, re-use GPUViewport one

GPencil: Set destination layer active after merge layers

If the destination layer is not set as active, the next operation will create a layer because no active layer.

initial list sockets

extract function to create simple socket type

add userdata to bNodeSocketType

Merge branch 'functions' into simulation-tree

add missing include