Fix for #2813 (scene.drillPick breaks scene.pickPosition)

Apps/Sandcastle/gallery/Picking.html

@@ -36,6 +36,7 @@
 var handler;
 
 Sandcastle.addDefaultToolbarButton('Show Cartographic Position on Mouse Over', function() {
+    scene.camera.viewRectangle(Cesium.Camera.DEFAULT_VIEW_RECTANGLE, scene.mapProjection.ellipsoid);
     var ellipsoid = scene.globe.ellipsoid;
     var entity = viewer.entities.add({
         label : {
@@ -68,6 +69,7 @@
             image : '../images/Cesium_Logo_overlay.png'
         }
     });
+    viewer.zoomTo(entity);
 
     // If the mouse is over the billboard, change its scale and color
     handler = new Cesium.ScreenSpaceEventHandler(scene.canvas);
@@ -126,6 +128,8 @@
         }
     });
     makeProperty(green, Cesium.Color.GREEN.withAlpha(0.5));
+
+    viewer.zoomTo(red);
 
     // Move the primitive that the mouse is over to the top.
     handler = new Cesium.ScreenSpaceEventHandler(scene.canvas);

Source/Scene/Scene.js

@@ -1987,6 +1987,16 @@ define([
             attributes.show = ShowGeometryInstanceAttribute.toValue(true, attributes.show);
         }
 
+        this._commandList.length = 0;
+        updatePrimitives(this);
+        createPotentiallyVisibleSet(this);
+
+        var passState = this._passState;
+        passState.framebuffer = undefined;
+        passState.blendingEnabled = undefined;
+        passState.scissorTest = undefined;
+        executeCommands(this, passState, defaultValue(this.backgroundColor, Color.BLACK));
+
         return result;
     };