iOS game developers face choice between Apple's Metal and deprecated OpenGL ES

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Apple's Metal, introduced in 2014, is a low-level graphics API designed specifically for iOS devices. OpenGL ES, the older cross-platform API, still functions but was deprecated starting with iOS 12 and receives no new features. Metal offers performance gains primarily by reducing CPU overhead through pre-validated states and multithreaded encoding. Apple recommends new iOS game projects adopt Metal from the start, while existing OpenGL ES games have time to plan a migration.

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