Use Graphene for indicator rendering.

appIconIndicators.js

@@ -1,8 +1,8 @@
-const Cogl = imports.gi.Cogl;
 const Cairo = imports.cairo;
 const Clutter = imports.gi.Clutter;
 const GdkPixbuf = imports.gi.GdkPixbuf
 const Gio = imports.gi.Gio;
+const Graphene = imports.gi.Graphene;
 const Gtk = imports.gi.Gtk;
 const Main = imports.ui.main;
 const Pango = imports.gi.Pango;
@@ -279,13 +279,15 @@ var RunningIndicatorDots = class DashToDock_RunningIndicatorDots extends Running
         //set center of rotatoins to the center
         this._area.set_pivot_point(0.5, 0.5);
         // prepare transformation matrix
-        let m = new Cogl.Matrix();
+        let m = new Graphene.Matrix();
         m.init_identity();
+        let v = new Graphene.Vec3();
+        v.init(0, 0, 1);
 
         switch (this._side) {
         case St.Side.TOP:
-            m.xx = -1;
-            m.rotate(180, 0, 0, 1);
+            m.xx = -1; 
+            m.rotate(180, v);
             break
 
         case St.Side.BOTTOM:
@@ -294,11 +296,11 @@ var RunningIndicatorDots = class DashToDock_RunningIndicatorDots extends Running
 
         case St.Side.LEFT:
             m.yy = -1;
-            m.rotate(90, 0, 0, 1);
+            m.rotate(90, v);
             break;
 
         case St.Side.RIGHT:
-            m.rotate(-90, 0, 0, 1);
+            m.rotate(-90, v);
             break
         }