(feat): Add Seam Painting to Canvas (1.x, 2.x & SDXL w/ Refiner)

[blessedcoolant]

What type of PR is this? (check all applicable)

• Feature

Have you discussed this change with the InvokeAI team?

• Yes

Description

PR to add Seam Painting back to the Canvas.

TODO Later

While the graph works as intended, it has become extremely large and complex. I don't know if there's a simpler way to do this. Maybe there is but there's soo many connections and visualizing the graph in my head is extremely difficult. We might need to create some kind of tooling for this. Coz it's going going to get crazier.

But well works for now.

[psychedelicious]

Gonna be honest, I tested this but do not have it in me to actually review the graph logic. YOLO

[blessedcoolant]

Gonna be honest, I tested this but do not have it in me to actually review the graph logic. YOLO

I'm pretty confident this is probably the least number of nodes that are to be used in order to achieve this but the number of intermediate images that get saved when you scale before processing really adds up coz you scale up and then scale down again.

But that's another problem entirely. I've done more testing and it seems like Seam Painting is doing what it should.

Now in order to get outpainting to work great, I think we have to implement the full LaMa infilling or some other more robust infilling method.

But right now this should have parity with what we had before.

Merging it.