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- sync-to-vblank
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- how does clients move their surfaces? set a full tri-mesh every
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time? probably just go back to x and y position, let the compositor
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do the fancy stuff. How does the server apply transformations to a
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surface behind the clients back? (wobbly, minimize, zoom) Maybe
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wobble is client side?
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- switch scanout when top surface is full screen
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- what about cursors then? maybe use hw cursors if the cursor
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satisfies hw limitations (64x64, only one cursor), switch to
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composited cursors if not.
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- multihead, screen geometry and crtc layout protocol, hotplug
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- input device discovery, hotplug
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- Advertise axes as part of the discovery, use something like
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"org.wayland.input.x" to identify the axes.
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- keyboard state, layout events at connect time and when it
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changes
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- relative events
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- input handling - keyboard focus, multiple input devices,
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multiple pointers, multi touch.
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- wayland-system-compositor
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- device kit/libudev/console kit integration to discover seats,
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that is, groups of input devices and outputs that provide a
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means for one user to interact with the system. That is,
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typically a mouse, keyboard and a screen. The input devices
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will just be evdev devices, the outputs will be a drm device
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filename and the specific outputs accessible throught that drm
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device.
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- send drm device in connection info, probably just udev path.
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- cairo-drm; wayland needs cairo-drm one way or another:
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- chris wilson (ickle) is doing cairo-drm for i915 now, basically
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the pixman-drm idean, but inside cairo instead.
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- pixman-drm; move the ddx driver batchbuffer logic into libdrm
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and write native, direct rendering acceleration code in
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pixman-drm. is a clean approach in that we avoid the mess of
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the global GL context leaking through to applications, and we
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can bootstrap this project by pulling in the EXA hooks from the
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DDX drivers.
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- use open gl behind the scenes a la glitz.
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- should be possible to provide a realistic api and then stub out
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the implementation with pwrite and pread so gtk+ port can proceed.
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- XKB like client side library for translating keyboard events to
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more useful keycodes and modifiers etc. Will probably be shared
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between toolkits as a low-level library.
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- port gtk+
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- eek, so much X legacy stuff there...
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- draw window decorations in gtkwindow.c
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- start from alexl's client-side-windows branch
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- Details about pointer grabs. wayland doesn't have active grabs,
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menus will behave subtly different. Under X, clicking a menu
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open grabs the pointer and clicking outside the window pops down
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the menu and swallows the click. without active grabs we can't
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swallow the click. I'm sure there much more...
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- Port Qt? There's already talk about this on the list.
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- X on Wayland
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- move most of the code from xf86-video-intel into a Xorg wayland
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module.
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- don't ask KMS for available output and modes, use the info from
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the wayland server. then stop mooching off of drmmode.c.
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- map multiple wayland input devices to MPX in Xorg.
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- rootless; avoid allocating and setting the front buffer, draw
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window decorations in the X server (!), how to map input?
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- gnome-shell as a wayland session compositor
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- runs as a client of the wayland session compositor, uses
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clutter+egl on wayland
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- talks to an Xorg server as the compositing and window manager
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for that server and renders the output to a wayland surface.
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the Xorg server should be modified to take input from the system
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compositor through gnome-shell, but not allocate a front buffer.
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- make gnome-shell itself a nested wayland server and allow native
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wayland clients to connect and can native wayland windows with
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the windows from the X server.
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- qemu as a wayland client; session surface as X case
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- qemu has too simple acceleration, so a Wayland backend like the
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SDL/VNC ones it has now is trivial.
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- paravirt: forward wayland screen info as mmio, expose gem ioctls as mmio
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- mapping vmem is tricky, should try to only use ioctl (pwrite+pread)
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- not useful for Windows without a windows paravirt driver.
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- two approaches: 1) do a toplevel qemu window, or 2) expose a
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wayland server in the guest that forwards to the host wayland
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server, ie a "remote" compositor, but with the gem buffers
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|
shared. could do a wl_connection directly on mmio memory, with
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head and tail pointers. use an alloc_head register to indicate
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desired data to write, if it overwrites tail, block guest. just
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a socket would be easier.
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- moblin as a wayland compositor
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- clutter as a wayland compositors
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- argh, mutter
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- make libwayland-client less ghetto
|
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|
- sparse based idl compiler
|
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|
- crack?
|
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|
- xml based description instead?
|
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|
- actually make batch/commit batch up commands
|
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|
|
- protocol for setting the cursor image
|
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|
|
- should we have a mechanism to attach surface to cursor for
|
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|
|
guaranteed non-laggy drag?
|
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|
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|
|
- drawing cursors, moving them, cursor themes, attaching surfaces
|
|
|
|
to cursors. How do you change cursors when you mouse over a
|
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|
|
text field if you don't have subwindows? This is what we do: a
|
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|
|
client can set a cursor for a surface and wayland will set that
|
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|
|
on enter and revert to default on leave
|
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|
|
|
|
|
|
- server should be able to discard surfaces, and send a re-render
|
|
|
|
event to clients to get them to render and provide the surface
|
|
|
|
again. for wayland system compositor vt switcing, for example, to
|
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|
|
be able to throw away the surfaces in the session we're switching
|
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|
|
away from. for minimized windows that we don't want live thumb
|
|
|
|
nails for. etc.
|
|
|
|
|
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|
|
- auth; We need to generate a random socket name and advertise that
|
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|
|
on dbus along with a connection cookie. Something like a method
|
|
|
|
that returns the socket name and a connection cookie. The
|
|
|
|
connection cookie is just another random string that the client
|
|
|
|
must pass to the wayland server to become authenticated. The
|
|
|
|
Wayland server generates the cookie on demand when the dbus method
|
|
|
|
is called and expires it after 5s or so.
|
|
|
|
|
|
|
|
- or just pass the fd over dbus
|
|
|
|
|
|
|
|
- drm bo access control, authentication, flink_to
|
|
|
|
|
|
|
|
- enter/leave events from the input devices
|
|
|
|
|
|
|
|
- gain, lose keyboard focus events; this event carries information
|
|
|
|
about which keys are currently held down as a surface gains focus
|
|
|
|
so the client can deduce modifier state.
|
|
|
|
|
|
|
|
- Range protocol may not be sufficient... if a server cycles through
|
|
|
|
2^32 object IDs we don't have a way to handle wrapping. And since
|
|
|
|
we hand out a range of 256 IDs to each new clients, we're just
|
|
|
|
talking about 2^24 clients. That's 31 years with a new client
|
|
|
|
every minute... Maybe just use bigger ranges, then it's feasible
|
|
|
|
to track and garbage collect them when a client dies.
|
|
|
|
|
|
|
|
- multi gpu, needs queue and seqno to wait on in requests
|
|
|
|
|
|
|
|
- opaque region, window rect
|
|
|
|
|
|
|
|
- save and restore state on crash, clients reconnect, re-render
|
|
|
|
buffers
|
|
|
|
|
|
|
|
- how do apps share the glyph cache? what is the glyph cache, how
|
|
|
|
does it work? pixbuf cache?
|
|
|
|
|
|
|
|
- synaptics, 3-button emulation, scim
|
|
|
|
|
|
|
|
- what to do when protocol out buffer fills up? Just block on write
|
|
|
|
would work I guess. Clients are supposed to throttle using the
|
|
|
|
bread crumb events, so we shouldn't get into this situation.
|
|
|
|
|
|
|
|
- when a surface is the size of the screen and on top, we can set the
|
|
|
|
scanout buffer to that surface directly. Like compiz unredirect
|
|
|
|
top-level window feature. Except it won't have any protocol state
|
|
|
|
side-effects and the client that owns the surface won't know. We
|
|
|
|
lose control of updates. Should work well for X server root window
|
|
|
|
under wayland.
|