[metacity] surface-xrender: avoid XFixesFetchRegionAndBounds in paint

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 774c5f6ad25b039d1d97fae241782825c2352e1c
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Feb 23 17:42:54 2020 +0200

    surface-xrender: avoid XFixesFetchRegionAndBounds in paint

 src/compositor/meta-surface-xrender.c | 31 -------------------------------
 1 file changed, 31 deletions(-)
---
diff --git a/src/compositor/meta-surface-xrender.c b/src/compositor/meta-surface-xrender.c
index 247659e4..97cbf515 100644
--- a/src/compositor/meta-surface-xrender.c
+++ b/src/compositor/meta-surface-xrender.c
@@ -108,25 +108,6 @@ is_argb (MetaSurfaceXRender *self)
   return FALSE;
 }
 
-static gboolean
-is_region_empty (Display       *xdisplay,
-                 XserverRegion  region)
-{
-  int n_rects;
-  XRectangle bounds;
-  XRectangle *rects;
-
-  rects = XFixesFetchRegionAndBounds (xdisplay, region, &n_rects, &bounds);
-
-  if (rects != NULL)
-    XFree (rects);
-
-  if (n_rects == 0 || bounds.width == 0 || bounds.height == 0)
-    return TRUE;
-
-  return FALSE;
-}
-
 static void
 paint_opaque_parts (MetaSurfaceXRender *self,
                     XserverRegion       paint_region,
@@ -187,12 +168,6 @@ paint_opaque_parts (MetaSurfaceXRender *self,
   XFixesTranslateRegion (self->xdisplay, clip_region, x, y);
   XFixesIntersectRegion (self->xdisplay, clip_region, clip_region, paint_region);
 
-  if (is_region_empty (self->xdisplay, clip_region))
-    {
-      XFixesDestroyRegion (self->xdisplay, clip_region);
-      return;
-    }
-
   XFixesSetPictureClipRegion (self->xdisplay, paint_buffer, 0, 0, clip_region);
 
   XRenderComposite (self->xdisplay, PictOpSrc,
@@ -217,9 +192,6 @@ paint_argb_parts (MetaSurfaceXRender *self,
   XserverRegion shape_region;
   XserverRegion clip_region;
 
-  if (is_region_empty (self->xdisplay, self->border_clip))
-    return;
-
   surface = META_SURFACE (self);
 
   x = meta_surface_get_x (surface);
@@ -237,9 +209,6 @@ paint_argb_parts (MetaSurfaceXRender *self,
   XFixesIntersectRegion (self->xdisplay, border_clip, border_clip, clip_region);
   XFixesDestroyRegion (self->xdisplay, clip_region);
 
-  if (is_region_empty (self->xdisplay, border_clip))
-    return;
-
   XFixesSetPictureClipRegion (self->xdisplay, paint_buffer, 0, 0, border_clip);
 
   XRenderComposite (self->xdisplay, PictOpOver,