Improved and simplified window texture presentation

Ryujinx/Ui/GLScreen.cs

@@ -294,7 +294,7 @@ namespace Ryujinx.Ui
 
         private new void RenderFrame()
         {
-            _renderer.Window.Present();
+            _device.PresentFrame(SwapBuffers);
 
             _device.Statistics.RecordSystemFrameTime();
 
@@ -312,8 +312,6 @@ namespace Ryujinx.Ui
 
             _titleEvent = true;
 
-            SwapBuffers();
-
             _device.System.SignalVsync();
 
             _device.VsyncEvent.Set();