On Nov 5, 2016, at 5:15 PM, Richard Charles <rcharles...@gmail.com> wrote:
> 
>> On Nov 5, 2016, at 5:50 PM, Carl Hoefs <newsli...@autonomy.caltech.edu> 
>> wrote:
>> 
>> I have an iOS app in which the user touches the screen, and I need to read 
>> the color of screen at the touched point. How can this be done in iOS 9.3?
> 
> OpenGL ES glReadPixels?

Thanks, that's the hint I was looking for! Got it working!
-Carl


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