Blender Git Loki

Cleanup - Split out the GP stroke sculpting loop-over-strokes logic into a separate function

Cleanup + Optimisations for GP Sculpt Multiframe

* Only initialise the falloff curve's internal data once per run,
instead of once per layer. We can probably even make this only happen
once for each run of the operator, as it shouldn't be possible to change
the curve in the meantime (requiring the data to be recalculated)

* Save off the multiframe falloff option into a variable instead of
doing the full check each time.

* Only calculate "diff_mat" once for each layer, instead of once for
each GP frame for multiedit. (Note: We weren't taking the frame numbers
into account anyway, so it doesn't matter to pull this out. However,
technically, if the layer was parented, we'd actually need to have been
recalculating the parents transforms for each of the multiedit frames
to get the real intended effects)

Minor Optimisation for GP Grab brush

Write directly to the point instead of writing to a temporary value first

WIP: Replace GL types by generic types

WIP: Initial test for offscreen render

Initial test to make a proof of concept of the render in textures.

Fix segment fault when delete object

The active object got null and this produced a segment fault.

Use round caps while drawing

Reduce size of round cap

Merge branch 'blender2.8' into greasepencil-object

New rounded end caps

Now the stroke ends are rounded to get more artistic look.

Merge branch 'blender2.8' into greasepencil-object

Fix multiframe error when lock layer

There was a segment fault if the some layer was locked and enable multiframe edit / sculpt or weight paint.

The shading group must be created because is used in multiedit lines.

WIP: Experimental Offscreen buffer for fill

Simple implementation of stroke drawing to texture

Fix merge errors

There was a problem with struct byte alignment.

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/blenloader/intern/versioning_280.c
source/blender/draw/intern/draw_cache_impl.h
source/blender/makesdna/DNA_scene_types.h

Delete with Border select in paint mode

This commit is similar to Lasso, but for border select.

New Eraser with Lasso select

When you are in paint mode, if press Ctrl+Alt and select with lasso tool, the points are removed.

This is a request of the Hero team after been working in cleanup process. The Lasso delete allows to remove very fast areas of the drawing.

Cleanup: Function to avoid code duplication

Add Erase stroke with Ctrl key

If press Ctrl over a stroke while using the eraser, the stroke is fully deleted, not point by point

Enable Hard Eraser with SHIFT

While you are drawing, if press Shift key, the eraser delete points with one contact only and does not depends of pressure.

This is very useful for fast remove.