montiagne 9e694c9d83 WindowServer: Call screen_resolution_changed after window screens clear ...

When the user executes chres to change to a new resolution, the
WindowManager removes for each window its intersections with the
screens (window.screens()) and recalculates its rect. Finally, a
Window::set_rect call sets the window's new rectangle. The set_rect
call also triggers a call to Compositor::invalidate_occlusions which
fills for each window the intersections with the screens again in
window.screens().
In case chres switches to an already present resolution the set_rect
call exits prematurely as it checks if the window's rect really
changed. This means that nobody calls invalidate_occlusions
resulting in a rendering issue for each window.

Moving the call to Compositor::screen_resolution_changed after the
clearing of window.screens() and recalc of the window rect for each
window resolves the rendering issue as screen_resolution_changed
calls invalidate_occlusions.

2022-05-29 00:26:20 +01:00

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