[region] Use the caller supplied array for extracting boxes.

Allow the user to pass in a pre-allocated array and use it if the number
of boxes permits. This eliminates the frequent allocations during clipping
by toolkits.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cairo-xlib-surface-private.h b/src/cairo-xlib-surface-private.h
index 87be9e6a9..fe37e5fbd 100644
--- a/src/cairo-xlib-surface-private.h
+++ b/src/cairo-xlib-surface-private.h
@@ -86,7 +86,7 @@ struct _cairo_xlib_surface {
     unsigned int clip_dirty;
     cairo_bool_t have_clip_rects;
     cairo_bool_t gc_has_clip_rects;
-    XRectangle embedded_clip_rects[4];
+    XRectangle embedded_clip_rects[8];
     XRectangle *clip_rects;
     int num_clip_rects;