Abstract: A GPU includes one or more post-processing controllers, and a 3D graphics pipeline including a post-processing shader stage following a pixel shader stage. The one or more post-processing controllers may synchronize an execution of one or more post-processing stages including the post-processing shader stage. The 3D pipeline may include one or more pixel shaders, one or more tile buffers, and a direct communication link between the post-processing shader stage and the one or more tile buffers. The one or more post-processing controllers may synchronize communication between the one or more post-processing shaders and the one or more tile buffers.