Blender Git Loki

Enable fake_user for image texture used in filling

First steps to create new radial gradient filling

Add new parameters for shift.

This modification is not compilable, need a change in Gawain.

Add chessboard support

Make fill visible if style is not solid

New shift properties to move filling pattern

Cleanup fragment shader code

Add new functions to filling shader as angle and factor

New parameters to control gradient or solid fill

Add defines to more clear shader code

View mix color only if gradient mode

Make new functions static

Fill shader working with basic gradient support.

The shaders now are for testing only to verify workflow, no real calculation.

Cleanup spaces and comments

Cleanup comments

Cleanup unused variables

Rename animation palette conversion function

Add new functions to calculate texture coordinates

Cleanup: Fix merge error

Add better poll method

Change poll method to check if there is a gpd datablock