Masks are not updated when edited when using the GPU compositor. That's
because the GPU compositor caches static resources and invalidates them
according to the recalculate flags that the depsgraph flushes to IDs.
The issue is that the flags are not flushed to the evaluated IDs of the
compositor depsgraph, but rather to some other evaluated versions of the
IDs.
To fix this, we make the compositor depsgraph persistent and store it in
the scene runtime. This allows us to reliably track changes to resources
used by the compositor and also reduces the overhead of depsgraph
creation in the compositor job.
Patch originally provided by Sergey.
Fixes#121188.
Pull Request: https://projects.blender.org/blender/blender/pulls/123085
95eb3e13bf