Resize of nested server surfaces never reaches mir::graphics::NestedOutput - nested server always renders with original size

[Andreas Pokorny]

Run mir_demo_server_shell and another one nested. Launch mir_demo_client_fingerpaint inside the nested one. Resize the window. This will resize only the nested server surface, since the hosting demo shell processes the gesture. Note that the finger paint surface stays aligned to the bottom left corner of the surface. On Nexus 10 this is position is (0,1600). This is wrong since our window frame is setup to have (0,0) in the top left corner and (0,window height) in the bottom left corner.

After some digging: The resize of the surface is never notified to NestedOutput nor the GLRenderer. Hence the view port uses the initiail size like 0,0-2560,1600 on N10.

[Daniel van Vugt (vanvugt)]

Yeah I would expect we never implemented the logic for nested server surface resize --> nested server output resize/reconfig.

Is that expected to happen much, if at all?

[Gerry Boland (gerboland)]

I want this

[Alan Griffiths (alan-griffiths)]

This only happens because an unsuitable window manager is selected for the host server. Try "--display-server system-compositor"

[Alan Griffiths (alan-griffiths)]

s/"--display-server system-compositor"/"--window-manager system-compositor"/

[Daniel van Vugt (vanvugt)]

Is that a fix attached or just "related"?

[Alan Griffiths (alan-griffiths)]

When I get back from vacation I'll check that the problem is fixed by the linked branch (with the above consideration that a suitable window manager must be selected).

[Alan Griffiths (alan-griffiths)]

Yes, fixed.

$ sudo mir_demo_server --arw-file --file /tmp/mir_socket --vt 2 --window-manager system-compositor --display-config sidebyside&
$ mir_demo_server --host-socket /tmp/mir_socket --display-config sidebyside --launch-client mir_demo_client_eglplasma