Blender Git Loki

run emitters in parallel

new multi map implementation that can deal with non trivial types

initial working version with ParticleSet

Cleanup: Fix compiler warnings

Merge branch 'greasepencil-object' into greasepencil-refactor

Merge branch 'master' into greasepencil-object

GPencil: Fix missing Scale Thickness menu option

This was removed by error in merge.

Undoexp: do not tag re-used IDs with LIB_TAG_NEW.

Merge branch 'master' into undo-experiments

Merge branch 'greasepencil-object' into greasepencil-refactor

Merge branch 'master' into greasepencil-object

GPencil: Refactor: Add back gradient fill mode

For more consistent behavior, the radial gradient is drawn inside the 0..1
uv space as if it was a texture.

GPencil: Refactor: Fix crash caused by material preview icons

Cleanup: GPencil: Fix Compiler warning about unused function

GPencil: Refactor: Fix onion overlay toggle

This make the assumption that the onion skins are always needed when.
This as a performance impact that will be fixed later.

GPencil: Refactor: Fix onion skining next frame drawing on top of active

GPencil: Refactor: Implement Onion skinning back

This new implementation changes a few things:
- The alpha is not dependent on the number of frames you choose to draw.
- The loop option affects more than one frame.
- The next frames are drawn on top of the active frame (TODO)

Cleanup: GPencil: Rename struct member

GPencil: Refactor: Fix dot UV rotation at the end of strokes

GPencil: Refactor: Remove image size from uv computation

Now UVs for line strokes is computed using only the pixel factor.
We can reintroduce the image size behavior easilly if needed but in a much
cleaner way.