wayland: refactor surface scaling

Another day, another wayland refactor. Way back when, dcc3c2e added
support for the hidpi-window-scale option (something you probably should
never set to no but whatever) to wayland. Well technically, it never had
any runtime toggling support (don't remember if detecting when vo_opts
changed was possible or not then; maybe not). Anyways in the process of
fixing that, I went ahead and refactored how this is all handled. The
key difference is that when hidpi-window-scale is disabled, wl->scaling
is directly set to 1 instead of forcibly setting
wl->current_output->scale to 1. Note that scaling operations don't
always require a geometry reset/resize so set_surface_scaling needs to
be separate from set_geometry. The logic here is kind of complicated but
it (should) be correct.

1 files changed, 1 insertions, 0 deletions

diff --git a/video/out/wayland_common.h b/video/out/wayland_common.h
index 9d8c514d47..b77bab462b 100644
--- a/video/out/wayland_common.h
+++ b/video/out/wayland_common.h
@@ -59,6 +59,7 @@ struct vo_wayland_state {
     bool focused;
     bool frame_wait;
     bool hidden;
+    bool scale_change;
     bool state_change;
     bool toplevel_configured;
     int display_fd;