Blender Git Loki

Cleanup: GPU: Remove unused shaders

Cleanup: DRW: Remove old unused code

Cleanup: Remove older draw engine from draw module

Cleanup: Make empty image use quad batch instead of specific batch

Overlay Engine: Edit Mode: Change Normal overlays

This gets rid of the geometry shader for normal display.
(note: happens to be twice as fast)
This also remove the unecessary shader variations.

Another goal was to get the do_zbufclip behavior back.
We occlude the base vertex which can occasion some flickers bu

GPU: Batch: Add second instance buffer

This is needed in one corner case. In an attempt to get rid of geometry
shader, we need to use instancing using pos and lnor vbos for edit mesh
normals overlay.

This is a bit hacky and quickly made. This should be do more thoroughly.

Addressed final comments

Merge branch 'master' into soc-2019-bevel-profiles

Merge branch 'master' into fluid-mantaflow

Mantaflow: Cleanup with clang-format

make VirtualNodeTree specific to one bNodeTree

new try_lookup method for StringMap

new vnode to multifunction mapping

change the node mapping a bit

Merge branch 'master' into greasepencil-object

GPencil: Add support to sort palette by SVH

Update rest of submodules to correct commit for Blender 2.81 release

Update to correct locale submodule for 2.81 release

New splash screen for master branch!

This way we can tell master from previous releases apart.

Splash by Gleb Alexandrov, Aidy Burrows and the Blender community

Merge branch 'master' into fluid-mantaflow