In both, you set up buffers with data to pass to the GPU and specify vertex and fragment shaders. Understanding Conceptual Differencesįrom a development perspective, OpenGL and Metal are similar. The effects are amazing - you may remember them from the Zen Garden example in the WWDC 2014 keynote. The result is Metal, which can provide up to 10✕ the number of draw calls for your app compared to OpenGL ES. The goal was to have low overhead and high performance while supporting the latest and greatest features. So, it took a clean-room approach and designed a graphics API specifically for Apple hardware. The cross-platform support of OpenGL ES is nice, but Apple realized it was missing the signature integration of the operating system, hardware, and software that all good Apple products have. That means, with a few small modifications, you can run C++ OpenGL ES code on other platforms, such as Android. OpenGL ES is designed to be a cross-platform framework. To complete this tutorial, you’ll need an A7 device or newer. They require a device with an Apple A7 chip or later. Note: Metal apps don’t run on the iOS simulator.

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