Removed renderer flush command because everything is enqueued into blocks which will be processed on the correct order.

Author: osinoleg

cocos2d/CCEffectNode.m

@@ -186,10 +186,10 @@ -(void)draw:(CCRenderer *)renderer transform:(const GLKMatrix4 *)transform
 
             [effect renderPassBegin:renderPass defaultBlock:nil];
             [self begin];
+            
             [effect renderPassUpdate:renderPass defaultBlock:nil];
 
             [self end];
-            [_renderer flush];
             [effect renderPassEnd:renderPass defaultBlock:nil];
 
             ++globalPassIndex;