When using integer scaling, resizing the window to be smaller than content_scale_size (the original viewport size) will clip the contents.

[Jordyfel]

Godot version

master

System information

Windows

Issue description

Follow-up to #81012 (review).

This causes contents of the viewport to be clipped out of the window, which is not desirable, and also causes a problem with the implemented Window.move_to_center() when used with embedded windows.

Steps to reproduce

Create a 2D scene, set the window stretch mode to canvas_items and stretch scale mode to integer in the project settings, and resize the window to be smaller than the original viewport size. Result demonstrated in linked comment.

Minimal reproduction project

In linked comment.

[Jordyfel]

In my opinion, the reasonable solution is to force the window minimum size to be equal to content_scale_size while using integer scaling, since integer scaling is supposed to be used with small content sizes anyway.

[dalexeev]

Perhaps we could note in the docs that with integer scaling it is recommended to set a minimum window size?

[Riteo]

I'm not really sure on what would be the best approach but definitely a documentation change would help since this causes confusion either way.