PIX is a program for debugging the graphical side of DirectX applications on the desktop. Since it works with desktop executables, it cannot be used to directly debug the graphics of non-desktop platforms such as iOS or Android. Despite this limitation PIX can be used on synced FlatRedBall projects to identify performance and memory problems common to all platforms.
PIX can be found in the start menu. To debug an existing FlatRedBall app:
Select File->New Experiment
Use the "..." button to select the "Program path"
Click the "Start Experiment" button
Your program will begin running. PIX will add some information to your project to notify you that it is running:
PIX can be found in the DirectX SDK: http://www.microsoft.com/en-us/download/details.aspx?id=6812 A walkthrough of PIX can be found here: http://blogs.msdn.com/b/manders/archive/2006/12/15/a-painless-introduction-to-pix-for-windows.aspx