Pinta.Core.AsyncEffectRenderer.StartRender C# (CSharp) Method

		void StartRender ()
		{
			is_rendering = true;			
			cancel_render_flag = false;			
			restart_render_flag = false;
			is_updated = false;
			
			render_id++;
			render_exceptions.Clear ();
			
			current_tile = -1;
			
			total_tiles = CalculateTotalTiles ();
			
			Debug.WriteLine ("AsyncEffectRenderer.Start () Render " + render_id + " starting.");			
			
			// Copy the current render id.
			int renderId = render_id;
			
			// Start slave render threads.
			int threadCount = settings.ThreadCount;
			var slaves = new Thread[threadCount - 1];
			for (int threadId = 1; threadId < threadCount; threadId++)
				slaves[threadId - 1] = StartSlaveThread (renderId, threadId);			
			
			// Start the master render thread.
			var master = new Thread (() => {
				
				// Do part of the rendering on the master thread.
				Render (renderId, 0);
				
				// Wait for slave threads to complete.
				foreach (var slave in slaves)
					slave.Join ();
				
				// Change back to the UI thread to notify of completion.
				Gtk.Application.Invoke ((o,e) => HandleRenderCompletion ());
			});
			
			master.Priority = settings.ThreadPriority;
			master.Start ();
			
			// Start timer used to periodically fire update events on the UI thread.
			timer_tick_id = GLib.Timeout.Add((uint) settings.UpdateMillis, HandleTimerTick);			
		}