Blender Git Loki

GPUImmediate: GL backend isolation

This is part of the Vulkan backend task T68990.

This is mostly a cleanup, however, there is a small change:
We don't use a special Vertex Array binding function for Immediate
anymore and just reuse the one for batches.
This might create a bit more state changes but this could be fixed
easily if it causes perf regression.

# Conflicts:
# source/blender/gpu/intern/gpu_context.cc

Cleanup: GPU_immediate: Change assert to BLI_assert

Fix T79973: Re-ordering face maps messes up the names of other face maps

Use a remap function instead a swap.

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D8739

GLContext: Fix framebuffer deletion to GPUContext

This has more meaning as it's the base class who holds the pointer.

# Conflicts:
# source/blender/gpu/opengl/gl_context.cc

Cleanup: reduce variable scope and use LISTBASE_FOREACH

LineArt: DNA/RNA cleanup.

LineArt: Names clean up.

Merge remote-tracking branch 'origin/master' into lanpr-under-gp

LineArt: added ratio() after interp() functions in math lib.

Merge remote-tracking branch 'origin/master' into lanpr-under-gp

Merge remote-tracking branch 'origin/master' into lanpr-under-gp

# Conflicts:
# build_files/cmake/config/blender_full.cmake
# build_files/cmake/config/blender_lite.cmake
# build_files/cmake/config/blender_release.cmake

LineArt: Better desctiption for enable linked objects

Cleanup 'make vertex parent' operator code.

More localized variables, avoid ugly 'offset by one' index usage in
favor of explicit `INDEX_UNSET` define, etc.

No behavior change expected from this commit.

Fix T80135: Duplicate doesn't preserve active spline

Checks to preserve the active spline on duplication
required an active vertex too.

Now having no active vertex doesn't prevent duplicate
from keeping the spline active.

Reviewed by: @mano-wii

Ref D8729

Cleanup: use doxy sections in interface_panels.c

Cleanup: spelling

LineArt: Slope throw away threshold in lineart_LineIntersectTest2d()

LineArt: More fluent viewport manipulation (canceling sequence optimization)

LineArt: Better manuverability with quick cancel.

LineArt: Feature line compatible clipping.