Awesome graphics study of GTAV using https://github.com/baldurk/renderdoc.
Other debuggers:
- Nvidia has nSight: https://www.nvidia.com/object/nsight.html
- Unity has FrameDebugger: http://blogs.unity3d.com/2014/07/29/frame-debugger-in-unity-5-0/
- Crytek has one too: http://cryengine.com/renderdoc