rsx: Pipeline barriers fixed up

- Ensure barriers are invoked even if no draw occurs!
-- Ensures that deferred commands are executed eventually

rpcs3/Emu/RSX/GL/GLGSRender.cpp

@@ -188,6 +188,7 @@ void GLGSRender::end()
 	if (skip_frame || !framebuffer_status_valid ||
 		(conditional_render_enabled && conditional_render_test_failed))
 	{
+		execute_nop_draw();
 		rsx::thread::end();
 		return;
 	}
@@ -386,6 +387,7 @@ void GLGSRender::end()
 	{
 		// Program is not ready, skip drawing this
 		std::this_thread::yield();
+		execute_nop_draw();
 		rsx::thread::end();
 		return;
 	}
@@ -482,6 +484,14 @@ void GLGSRender::end()
 			m_vertex_layout = analyse_inputs_interleaved();
 			if (!m_vertex_layout.validate())
 			{
+				// Execute remainining pipeline barriers with NOP draw
+				do
+				{
+					rsx::method_registers.current_draw_clause.execute_pipeline_dependencies();
+				}
+				while (rsx::method_registers.current_draw_clause.next());
+
+				rsx::method_registers.current_draw_clause.end();
 				break;
 			}
 		}
@@ -623,8 +633,6 @@ void GLGSRender::end()
 		}
 	} while (rsx::method_registers.current_draw_clause.next());
 
-	rsx::method_registers.current_draw_clause.post_execute_cleanup();
-
 	m_rtts.on_write();
 
 	m_attrib_ring_buffer->notify();

rpcs3/Emu/RSX/RSXThread.cpp

@@ -469,6 +469,8 @@ namespace rsx
 		in_begin_end = false;
 		m_draw_calls++;
 
+		method_registers.current_draw_clause.post_execute_cleanup();
+
 		m_graphics_state |= rsx::pipeline_state::framebuffer_reads_dirty;
 		ROP_sync_timestamp = get_system_time();
 
@@ -492,6 +494,16 @@ namespace rsx
 		}
 	}
 
+	void thread::execute_nop_draw()
+	{
+		method_registers.current_draw_clause.begin();
+		do
+		{
+			method_registers.current_draw_clause.execute_pipeline_dependencies();
+		}
+		while (method_registers.current_draw_clause.next());
+	}
+
 	void thread::operator()()
 	{
 		try

rpcs3/Emu/RSX/RSXThread.h

@@ -544,6 +544,7 @@ namespace rsx
 	public:
 		virtual void begin();
 		virtual void end();
+		virtual void execute_nop_draw();
 
 		virtual void on_init_rsx() = 0;
 		virtual void on_init_thread() = 0;

rpcs3/Emu/RSX/VK/VKGSRender.cpp

@@ -1179,6 +1179,13 @@ void VKGSRender::emit_geometry(u32 sub_index)
 	if (!m_vertex_layout.validate())
 	{
 		// No vertex inputs enabled
+		// Execute remainining pipeline barriers with NOP draw
+		do
+		{
+			draw_call.execute_pipeline_dependencies();
+		}
+		while (draw_call.next());
+
 		draw_call.end();
 		return;
 	}
@@ -1316,6 +1323,7 @@ void VKGSRender::end()
 	if (skip_frame || !framebuffer_status_valid || renderer_unavailable ||
 		(conditional_render_enabled && conditional_render_test_failed))
 	{
+		execute_nop_draw();
 		rsx::thread::end();
 		return;
 	}
@@ -1556,6 +1564,7 @@ void VKGSRender::end()
 	{
 		// Program is not ready, skip drawing this
 		std::this_thread::yield();
+		execute_nop_draw();
 		rsx::thread::end();
 		return;
 	}
@@ -1682,8 +1691,6 @@ void VKGSRender::end()
 	}
 	while (rsx::method_registers.current_draw_clause.next());
 
-	rsx::method_registers.current_draw_clause.post_execute_cleanup();
-
 	close_render_pass();
 	vk::leave_uninterruptible();