Blender Git Loki

Viewport Compositor: Port Difference Key node

This patch ports the Difference Key node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Color Key node

This patch ports the Color Key node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Color Spill node

This patch ports the Color Spill node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Chroma Key node

This patch ports the Chroma Key node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Fix T94442: Trim curve node can crash with duplicate point

The calculation to find the factor between two evaluated points assumed
that the points were not at the same location. This assumption is some-
what reasonable, since we might expect `lower_bound` to skip those
point anyway. However, the report found a case where the first two
evaluated points were coincident, and there is no strong reason not
to make this safe, so add a check for 0 length before the division.

GPencil: Avoid crashes calling from python

This is part of T94439

Viewport Compositor: Port RGB node

This patch ports the RGB node to the viewport compositor.

Viewport Compositor: Port Value node

This patch ports the Value node to the viewport compositor.

Viewport Compositor: Port Split Viewer node

This patch ports the Split Viewer node to the viewport compositor.

Viewport Compositor: Port Box Mask node

This patch ports the Box Mask node to the viewport compositor.

Viewport Compositor: Port Ellipse Mask node

This patch ports the Ellipse Mask node to the viewport compositor.

Viewport Compositor: Port Channel Key node

This patch ports the Channel Key node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Vector Curves node

This patch ports the Vector Curves node to the viewport compositor. A
variant of the existing vector_curves was added to work without mixing
and the inputs were reduced to vec3 because vec4 are superfluous.

Viewport Compositor: Complete Alpha Over node

This patch adds the missing premultiplication handling for the Alpha
Over node. The shader is a straightforward port of the compositor code.

Viewport Compositor: Port Convert Alpha node

This patch ports the Convert Alpha node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Color Ramp node

This patch ports the Color Ramp node to the viewport compositor. The
shading color ramp shader was moved into a common directory to be used
by both materials and the compositor.

Viewport Compositor: Port Separate/Combine nodes

This patch ports the Separate/Combine nodes to the viewport compositor.
The shader is a straightforward port of the compositor code.

Viewport Compositor: Port Math node

This patch ports the Math node to the viewport compositor. The shading
math shader was moved into a common directory to be used by both
materials and the compositor.

Viewport Compositor: Port RGB To BW node

This patch ports the RGB To BW node to the viewport compositor. The
shader is a straightforward port of the compositor code.

Viewport Compositor: Port Set Alpha node

This patch ports the Set Alpha node to the viewport compositor. The
shader is a straightforward port of the compositor code.