Update todo

TODO

@@ -1,12 +1,16 @@
- - sync-to-vblank
-
  - how does clients move their surfaces? set a full tri-mesh every
    time? probably just go back to x and y position, let the compositor
    do the fancy stuff.  How does the server apply transformations to a
    surface behind the clients back? (wobbly, minimize, zoom) Maybe
    wobble is client side?
 
- - switch scanout when top surface is full screen
+
+ - 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.
 
     - what about cursors then?  maybe use hw cursors if the cursor
       satisfies hw limitations (64x64, only one cursor), switch to
@@ -168,12 +172,6 @@
 
  - 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
@@ -196,10 +194,3 @@
  - 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.