Trying to figure out how to fix the lack of
mipmaps on ViewportTextures in
no signal in Godot 4.2.2.
Unfortunately, it appears that Godot does not
generate mipmaps at all:
Mipmaps aren't generated for ViewportTexture, so I think this is expected.
There's an open issue for the fact that the
"generate mipmaps" setting is ignored for
ViewportTextures in Godot 3 (godotengine/godot#23417)
and there is no such setting in Godot 4.
Naively attempting to use
Image's
generate_mipmaps function is much
too slow as it makes the game's framerate very
choppy.