Xcode FPS Debug Gauge always show 0 FPS

Question

I have a game in Xcode 6.1.1 using OpenGL ES 3.0, targeting iPad Air. When I capture OpenGL ES frame, the FPS number and shader program time always show 0.

I have enabled "GPU Frame Capture" option in project scheme. Frame rendering is called by CADisplayLink in a non-main thread.

How can I get the correct FPS nubmer and program time?

Answer 1

Next to the Run Button click on your project and then > Edit Scheme ... > Run Configuration > Options > GPU Frame Capture > choose OpenGL ES.