[Wayland-bugs] [Bug 745076] Various DPI and OpenGL related fixes in the Wayland backend

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=745076

--- Comment #10 from Jonas Ådahl <jadahl at gmail.com> ---
Is that how OpenGL windows should work? I noticed that the gtk3-demo OpenGL
sample renders differently given the window scale.

To reproduce, apply the xdg-shell v5 patches to weston, add the following lines
to ~/.config/weston.ini:

[output]
name=X1
scale=1

[output]
name=X2
scale=2

then start the OpenGL sample in gtk3-demo on the X1 output and drag it so that
any part of the GTK+ OpenGL window overlaps with the X2 output. It made me
wonder how HiDPI how was meant to work for OpenGL windows. I couldn't see any
mention of scales in the documentation.

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