Blender Git Loki

Correct freeing builtin shader from recent commit

Fix T60704: Transparency threshold only half visible

DRW: pass clipping to geom shader via 'gl_in'

Removes need to pass the worldspace location.

Cleanup: remove '_sh' suffix

Shaders are now stored in their own struct, no need for special names.

Also free as an array.

DRW: Support edit-mesh clipping

Cleanup: rename GPU function to set buffer length

Cleanup: rename terms count/num to len

Cleanup: replace 'ct' w/ 'len'

DRW: set 4 clipping planes for box-clip

3D View: add back clipping border operator

3D View: add back initial clipping support

Use clipping for workbench solid mode drawing.

Other modes & shading support still needs to be added.

Cleanup: trailing space

Cleanup: shadow warning, style

Merge branch 'master' into greasepencil-object

Fix T60678: GP, smoothing a stroke's weights multiple times will lead to unweightable points

Fix T60677: GP vertex groups get messed up, when deleting a group

Fix T60671: GP weight paint crash when smoothing weights

GP: Fix mirror modifier with parent object

Still problems when local rotation.

Some cleanup done.

Cleanup: remove all BLI_utiledefines' ugly vectorial macros.

Not only were those often making doublons with already existing
BLI_math's stuff, but they were also used to hide implicit type
conversions...

As usual this adds some more exotic inlined vector functions (one of
the rare cases where I really miss C++ and its templates... ;) ).

Fix bevel modifier spread value bug.

Was using same field as value, by mistake.