sungmg/mutter-performance-source
1
0
Fork 0
Code Activity

clutter: Avoid rounding compensation when invalidating 2D actors

Browse source 
This allows the redraw clip to be more constrained, so MetaCullable doesn't
end up rendering portions of window shadows, frame and background when a
window invalidates (part of) its contents.

https://bugzilla.gnome.org/show_bug.cgi?id=782344
This commit is contained in:
Carlos Garnacho 2017-05-05 14:15:30 +02:00
parent 9f3d321bf2
commit a7df459416
1 changed files with 15 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
clutter/clutter/clutter-paint-volume.c
View file

@ -1164,6 +1164,21 @@ _clutter_paint_volume_get_stage_paint_box (ClutterPaintVolume *pv,
_clutter_paint_volume_get_bounding_box (&projected_pv, box);
if (pv->is_2d && pv->actor &&
clutter_actor_get_z_position (pv->actor) == 0)
{
/* If the volume/actor are perfectly 2D, take the bounding box as
* good. We won't need to add any extra room for sub-pixel positioning
* in this case.
*/
clutter_paint_volume_free (&projected_pv);
box->x1 = CLUTTER_NEARBYINT (box->x1);
box->y1 = CLUTTER_NEARBYINT (box->y1);
box->x2 = CLUTTER_NEARBYINT (box->x2);
box->y2 = CLUTTER_NEARBYINT (box->y2);
return;
}
/* The aim here is that for a given rectangle defined with floating point
* coordinates we want to determine a stable quantized size in pixels
* that doesn't vary due to the original box's sub-pixel position.