Blender Git Loki

Gawain: move AttribBinding funcs to private interface

Other parts of Gawain uses these internally, but they're not part of the public API.

Part of T51219

Gawain: fix compiler warnings

vertex_format.c implements both public and private functions, so needs to include the private header.

Follow-up to 7c57ca5109793c54f34adfd396c41b1be163d61f

Gawain: fix compilation on MSVC 2013

attrib_binding.c uses NULL, so include stddef.
Also swapped stdlib for stddef in vertex_format.c, since it only needs NULL.

Not sure why MSVC 2017 and clang/Mac work without this...

Thanks to @youle for reporting!

Merge branch 'blender2.8' into greasepencil-object

OpenGL: minor cleanup & TODO

Just clearing out some old git stashes.

No point getting old GL light model to work on old Intel GPUs (both are obsolete for 2.8)

Gawain: look up builtin uniforms by enum, not by name

This speeds up color and transformation matrix lookups at draw time (used by almost all shaders).

Gawain: use ShaderInterface to manage vertex attribs

This eliminates tons of glGetAttribLocation calls from the drawing loop. Vast majority of code can keep making the same function calls. They're just faster now!

Move HMD operators to wm_hmd.c

Replace wm_device.c with wm_hmd.c, rename functions appropriately

Merge branch 'master' into HMD_viewport

Gawain: remove 2D matrix uniforms from ShaderInterface

- remove 2D-specific variants of BuiltinUniform enum
- rename remaining builtins to exclude "_3D" since they can be used by 2D or 3D shaders

Follow up to D2626

Gawain: fix header comments

Missed this when splitting VertexBuffer from Batch -- they used to live in the same file.

Gawain: move some VertexFormat funcs to private interface

Other parts of Gawain uses these internally, but they're not part of the public API.

Part of T51219

Gawain: rename AttribBinding clear for consistency

AttribBinding is only used internally by Gawain.

Part of T51219

Fix closing HMD window not exiting HMD session correctly

Fix virtual cursor not being removed correctly when stopping hmd session

Fix missing manipulator update after undo

Steps to recreate the error were:
* Enter edit mode
* Change Vertex positions
* Undo -> Manipulator position isn't updated

Merge branch 'master' into soc-2016-multiview

replace Set(Get)ClipNum() with MaxClip()+1

Fix some errors in onion skins