Blender Git Loki

Fix problems after merge

Cleanup: Remove unused shader definition

Merge branch 'blender2.8' into greasepencil-object

Draw buffer if stroke shaders are not loaded yet

This fix the problem for the first stroke in the frame

Cleanup: Replace duplicate lines by helper function

WIP: Add current stroke buffer to drawing manager

Pending to solve the error for first stroke before frame is created

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Fix some errors in onion skins

Separate in different passes

Prepare shaders for animation onion skin data

Reorganize strokes drawing code

Save parent matrix in bGPDlayer

It's faster a more efficient to save this drawing matrix by layer instead to allocate memory on the fly.

Merge branch 'blender2.8' into greasepencil-object

Remove duplicate function

Initially, the function to calculate the matrix was different, but now both are equal, so new function can be deleted.

Merge branch 'blender2.8' into greasepencil-object

When remove layer parent reset stroke position

With new design when a layer parent is removed, the stroke revert to original position without parenting.

WIP: Add layer parenting

There are some memory leaks

Add TODO for xray functionality