Blender Git Loki

UI: use DPI scale for transform cursors

Fix error in recent gizmo tweak workaround

Cleanup: use 'context' to make panels show in their section

All panels were calling poll to draw in their section causing a lot of
repeated boiler plate poll functions.

Also rename 'PreferencePanel' to 'CenterAlignMixIn'
since this is it's purpose.

Cleanup: add sections to preferences UI script

Makes navigating between sections easier, order some classes
which were in the wrong section.

GPencil: Refactor: Add Swirl FX

The angle is no longer mulitplied by 8. We need to change the UI and patch
old files to preserve an appropriate slider feeling.

The Swirl FX (like others) is now affected by distance of the source object.

Transparent option has not been reimplemented as you can use masking for
that.

GPencil: Refactor: Add Wave FX

Use the same shader as flip fx because we only transform the uvs and
sample once.

GPencil: Refactor: Add Flip FX

Cleanup: GPencil: CamelCase for uniform and fix a wrong comparison

GPencil: Refactor: Add Rim FX

Nothing has changed functionality wise.

GPencil: Refactor: Put blend mode shader code into gpencil_common_lib.glsl

This is because the rim fx needs the same code.

GPencil: Refactor: Add Colorize FX

The behavior has been changed quite a bit to work with separated
transparency layer.

- The custom mode now just blend between the original image and the
same image with the color changed and luma kept as is.
- Grayscale & Sepia mode now blend with the original image using the factor.
- The duo tone do not do a sharp separation of colors. It just color the
original in 2 different color using a hard separation threshold.

Fix panel for USD experimental showing for all sections

GPencil: Set default VFX Shadow color to Gray

Animation: Clarified tooltip for Viewport Render Animation

The tooltip was static, so it was the same for viewport-rendering the
current frame and for the entire animation. It is now different for
those two.

The structure of `screen_opengl_render_description()` is such that it
allows for adding a new description for a soon-to-come feature (T72229).

Gizmo: add the ability to postpone refreshing while tweaking

This resolves a logical problem using tweak as a fallback tool.
See: T66304#828742

The select action would immediately show the gizmo underneath it,
then the tweak would be handled by the gizmo instead of moving the item
under the cursor.

Currently this works by hiding the gizmo until the tweak event ends.
While it's simpler to check if the gizmo received a mouse-down event,
it causes flickering before each drag event which feels like a glitch.

This is optional for each gizmo type because there are cases where this
can be useful to activate the gizmo immediately (mesh rip for example).

Merge branch 'greasepencil-object' into greasepencil-refactor

Merge branch 'master' into greasepencil-object

GPencil: Remove arbitrary limit to only one VFX

GPencil: Change default values for Blur VFX

fix missing include