Blender Git Loki

Avoid error adding layer

GP: Cleanup unused variable

WIP: Support Blend layer

This new option for Layers allow to define the blend mode between layers to create effects and help with the painting of the frames.

Note: If use substract to open holes, you can get the transparent problem we already know and that it's pending to solve using OIT.

Merge branch 'blender2.8' into greasepencil-object

Add GP modifer to extract strokes

Add option to select contour verts

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Fix problem with onion in multiwindow mode

Fix problem with storage index

The storage index was not updated and the object scale and other data were wrong

Use Time Offset modifier to calc VBOs size

The active frame can be different if there is a time offset modifier.

GP: Small cleanup

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/draw/engines/gpencil/gpencil_draw_utils.c

GP: Recalc VBOs size with modifiers

Some modifiers can change the total number of points.

GP: Alloc maximum size

The resize of the VBOs is very heavy for the CPU, so now the maximum size is allocated.

Merge remote-tracking branch 'remotes/origin/blender2.8' into soc-2018-npr

# Conflicts:
# release/scripts/addons
# release/scripts/addons_contrib
# source/blender/makesdna/DNA_lamp_types.h

Change default VBO size for FILL

Merge branch 'blender2.8' into greasepencil-object