Fixed alpha setting on BlitterRenderer

Author: bitnenfer

v3/src/gameobjects/blitter/BlitterWebGLRenderer.js

@@ -1,7 +1,7 @@
 
 var BlitterWebGLRenderer = function (renderer, src, interpolationPercentage)
 {
-    var worldAlpha = src.color.worldAlpha * 255 << 24;
+    var worldAlpha = src.color.worldAlpha;
     var len = src.children.list.length;
 
     //  Skip rendering?
@@ -22,7 +22,7 @@ var BlitterWebGLRenderer = function (renderer, src, interpolationPercentage)
             continue;
         }
 
-        renderer.blitterBatch.add(bob.x, bob.y, frame);
+        renderer.blitterBatch.add(bob.x, bob.y, frame, worldAlpha);
     }
 };
 

v3/src/renderer/webgl/WebGLRenderer.js

@@ -267,7 +267,7 @@ WebGLRenderer.prototype = {
             var child = state.sys.children.list[c];
             child.renderWebGL(this, child, interpolationPercentage);
             var batch = this.batch;
-            if (batch.isFull())
+            if (batch && batch.isFull())
                 batch.flush();
         }
         var batch = this.batch;