[mutter] [MutterShapedTexture] Use cogl multitexture API

[Tomas Frydrych <tomasf src gnome org>]

commit fb3d352d3ae7bbfba50d7264a85775dbfec2ef61
Author: Tomas Frydrych <tf linux intel com>
Date:   Thu Feb 11 15:21:30 2010 +0000

    [MutterShapedTexture] Use cogl multitexture API
    
    The older code relied on Clutter providing default texture coords for any
    layers for which texture coords were not specified, which does not work as
    of Clutter 1.1.6 (due to commit 8b950bdc87fae2626af8a96916b7f51fdea40a17).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=609657

 src/compositor/mutter-shaped-texture.c |   32 +++++++++++++++++++++-----------
 1 files changed, 21 insertions(+), 11 deletions(-)
---
diff --git a/src/compositor/mutter-shaped-texture.c b/src/compositor/mutter-shaped-texture.c
index 8a04804..a335cf1 100755
--- a/src/compositor/mutter-shaped-texture.c
+++ b/src/compositor/mutter-shaped-texture.c
@@ -427,24 +427,34 @@ mutter_shaped_texture_paint (ClutterActor *actor)
 	}
       else
 	{
-	  float coords[MAX_RECTS * 8];
+	  float coords[8];
+          float x1, y1, x2, y2;
+
 	  for (i = 0; i < n_rects; i++)
 	    {
 	      GdkRectangle *rect = &rects[i];
 
-	      coords[i * 8 + 0] = rect->x;
-	      coords[i * 8 + 1] = rect->y;
-	      coords[i * 8 + 2] = rect->x + rect->width;
-	      coords[i * 8 + 3] = rect->y + rect->height;
-	      coords[i * 8 + 4] = rect->x / (alloc.x2 - alloc.x1);
-	      coords[i * 8 + 5] = rect->y / (alloc.y2 - alloc.y1);
-	      coords[i * 8 + 6] = (rect->x + rect->width) / (alloc.x2 - alloc.x1);
-	      coords[i * 8 + 7] = (rect->y + rect->height) / (alloc.y2 - alloc.y1);
-	    }
+	      x1 = rect->x;
+	      y1 = rect->y;
+	      x2 = rect->x + rect->width;
+	      y2 = rect->y + rect->height;
+
+              coords[0] = rect->x / (alloc.x2 - alloc.x1);
+	      coords[1] = rect->y / (alloc.y2 - alloc.y1);
+	      coords[2] = (rect->x + rect->width) / (alloc.x2 - alloc.x1);
+	      coords[3] = (rect->y + rect->height) / (alloc.y2 - alloc.y1);
+
+              coords[4] = coords[0];
+              coords[5] = coords[1];
+              coords[6] = coords[2];
+              coords[7] = coords[3];
+
+              cogl_rectangle_with_multitexture_coords (x1, y1, x2, y2,
+                                                       &coords[0], 8);
+            }
 
 	  g_free (rects);
 
-	  cogl_rectangles_with_texture_coords (coords, n_rects);
 	  return;
 	}
     }