struct weston_surface is now the only surface type we have (in core, shell.c
has shell_surface, of course). A lot of code gets simpler and we never
have to try to guess whether an API takes a wl_surface or a weston_surface.
Instead of directly setting the dirty flag on weston_surface geometry,
use a function for that.
This allows us to hook into geometry dirtying in a following patch.
Also add comments to weston_surface fields, whose modification causes
transform state to become outdated.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
The function weston_surface_animation_frame() would schedule a repaint
on all outputs, as weston_surface_schedule_repaint() didn't exist when
it was implemented.
The spring code stops when the current value is withing 0.0002 of the
target. In that case, round the value to 0.0 or 1.0 to enable the use
of fast paths, such as disabling blending in the GL renderer when an
opaque region is set.
Add parameters to weston_fade_run() for setting the initial and target
values for the fade, as well as a parameter to set the spring constant
used for the animation.
Also add the weston_fade_update() function, that allows the animation
to be changed while it is still running.
This will be used to move the fade animation from core Weston into the
shell. These changes are needed to be able to fade out as well as in,
and to be able to reverse the fade in case of user input.
