Fix #3386

Author: emackey

Source/Scene/Scene.js

@@ -1982,14 +1982,14 @@ define([
 
         us.update(frameState);
 
+        scratchRectangle.x = drawingBufferPosition.x - ((rectangleWidth - 1.0) * 0.5);
+        scratchRectangle.y = (this.drawingBufferHeight - drawingBufferPosition.y) - ((rectangleHeight - 1.0) * 0.5);
+
         var passState = this._pickFramebuffer.begin(scratchRectangle);
         updatePrimitives(this);
         createPotentiallyVisibleSet(this);
         updateAndClearFramebuffers(this, passState, scratchColorZero, true);
 
-        scratchRectangle.x = drawingBufferPosition.x - ((rectangleWidth - 1.0) * 0.5);
-        scratchRectangle.y = (this.drawingBufferHeight - drawingBufferPosition.y) - ((rectangleHeight - 1.0) * 0.5);
-
         executeCommands(this, passState);
         resolveFramebuffers(this, passState);
 
@@ -2233,7 +2233,7 @@ define([
      *
      * @example
      * scene = scene && scene.destroy();
-     * 
+     *
      * @see Scene#isDestroyed
      */
     Scene.prototype.destroy = function() {