Blender Git Loki

Cleanup: Remove unused code

Cleanup: quiet warnings for GCC

Fix bad range checks

Merge branch 'blender2.8' into greasepencil-object

UI: Disable Onion filter at Layer level

If main switch is disabled, thios column must be disabled too.

Solve some minor issues in onion panel

Fix problem with onion override

There were some conflicts in the override with main options.

Merge branch 'blender2.8' into greasepencil-object

UI: Change label text

Add override options for onion skinning

This commit add options to modify at layer level the default onion skinning parameters defined at object level.

Move onion skin settings to GP datablock

Now that we have GP object, it's better to move onion skining settings at object level and keeep only a flag to enable disable at layer level.

Fix error in onion skinning

The shgroup id was not updated in the loop.

Fix opacity problem with fast drawing.

The pass was doing double blending.

Thanks to Clement Foucault for his help solving this issue.

Fix Blur problem wit opacity.

There was a double blending that reduced opacity

Fix functions renamed by merged commit 6d359e

Merge branch 'blender2.8' into greasepencil-object

Add option to disable fast drawing

This option has been added to compare viewport speed while drawing, but maybe can be good to keep it.

Fix missing line of previous commit

Rework in Fast Drawing to avoid lags

Try to avoid any lag for very short and fast strokes

Merge branch 'blender2.8' into greasepencil-object