[clutter] culling: Use vertex_count not '4' to determine partial culls

[Robert Bragg <rbragg src gnome org>]

commit 588d97c2c7f8108e84fd2a32fdae071a4629d283
Author: Robert Bragg <robert linux intel com>
Date:   Thu Jun 2 12:10:59 2011 +0100

    culling: Use vertex_count not '4' to determine partial culls
    
    We were mistakenly using the constant 4 to determine the number of
    vertices that need to be culled for a paint-volume to be considered
    fully culled too. This is only ok for 2d volumes and was resulting in
    some 3d volumes being considered culled whenever 4 out of 8 vertices
    were culled. This fix is simply to reference the vertex_count variable
    instead of assuming 4.

 clutter/clutter-paint-volume.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/clutter/clutter-paint-volume.c b/clutter/clutter-paint-volume.c
index 43e4562..5eea61b 100644
--- a/clutter/clutter-paint-volume.c
+++ b/clutter/clutter-paint-volume.c
@@ -963,7 +963,7 @@ _clutter_paint_volume_cull (ClutterPaintVolume *pv,
             out++;
         }
 
-      if (out == 4)
+      if (out == vertex_count)
         return CLUTTER_CULL_RESULT_OUT;
       else if (out != 0)
         partial = TRUE;