Blender Git Loki

Cleanup code

Remove unused ARegion parameter

This parameter was added for new shaders, but finally is not used.

Remove scale factor for thickness

With the new draw manager, calculate the scale in the drawing is not a solution because the batch drawing need to include the scale calculation in the shader.

TODO: Add scale calculation to shader itself.

Move initialization code to new versioning file

Merge branch 'blender2.8' into gpencil_2.8

Cleanup: Remove variables for cyclic and use pointers

Cleanup: Reduce variable declaration

Cleanup: Make code more compact

Cleanup: Remove extra space lines

Merge branch 'blender2.8' into gpencil_2.8

Add support for cyclic stroke

Cleanup: Rename screen var and change culling factor

Add stroke culling to avoid weird lines

Change stroke scale

Merge branch 'blender2.8' into gpencil_2.8

Merge branch 'blender2.8' into gpencil_2.8

Add offset parameters

Replace windows size by parameters

Use RegionView3D matrix instead of general Opengl matrix

Shader almost working