Pro OpenGL ES for iOS

300 CHAPTER 9: Performance ’n’ Stuff^

You start Instruments by using the Profile menu item or the build/run selection on the

editor window, as shown in Figure 9-6. If you don’t see the micrometer icon, just click

and hold on whatever the button is showing at that time.

Figure 9-6. The Instruments launch button from Xcode

Instruments will now display the palette of various tools available for iOS. Select the one

for OpenGL ES Analysis, as shown in Figure 9-7; then stand back and be amazed.

Figure 9-7. Launching the OpenGL ES analysis tool

When the tool has launched, you’ll be presented with the screen in Figure 9-8.