wayland: display scaled window at correct resolution

Though it's scaled by the compositor in a ugly way, real hidpi support
should come

source/wayland/display.c

@@ -215,6 +215,8 @@ wayland_surface_protocol_enter(void *data, struct wl_surface *wl_surface, struct
         return;
     if ( ( output->scale < 1 ) || ( output->scale > 3 ) )
         return;
+    // FIXME: hidpi
+    // wl_surface_set_buffer_scale( wl_surface, output->scale );
 
     ++wayland->scales[output->scale - 1];
     if ( wayland->scale < output->scale )
@@ -294,8 +296,8 @@ display_surface_commit(cairo_surface_t *surface)
 
     wl_surface_damage(wayland->surface, 0, 0, pool->width, pool->height);
     wl_surface_attach(wayland->surface, buffer->buffer, 0, 0);
-    if ( wl_surface_get_version(wayland->surface) >= WL_SURFACE_SET_BUFFER_SCALE_SINCE_VERSION )
-        wl_surface_set_buffer_scale(wayland->surface, wayland->scale);
+    // FIXME: hidpi
+    // wl_surface_set_buffer_scale(wayland->surface, wayland->scale);
     buffer->released = FALSE;
 
     wl_surface_commit( wayland->surface );