Note: Enabling validation increases CPU usage, so only enable it for debugging. Validation errors break code execution in the XCode editor, and appear in device logs.

Select Run > Options > Metal API Validation and choose Enabled.

Open the generated Xcode project in Xcode and select Edit Scheme. Xcode offers Metal API validation, which you can use to trace obscure issues. Metal is enabled by default on iOS, tvOS and macOS Standalone Players. Or, if you are using MacOS, open Terminal and use the -force-metal command line argument. More info See in Glossary, then select the Player category, and enable Metal Editor Support. In the Editor, go to menu: Edit > Project Settings A broad collection of settings which allow you to configure how Physics, Audio, Networking, Graphics, Input and many other areas of your project behave. To make the Unity Editor and Standalone Player use Metal as the default graphics API, do one of the following: Metal does not support geometry shaders A program that runs on the GPU. Minimum shader compilation target is 3.5. MacOS has Metal support for Intel HD and Iris Graphics from the HD 4000 series or newer, AMD GCN-based GPUs, and Nvidia Kepler-based GPUs or newer. IOS and tvOS have Metal support for Apple A7 or newer SoC-s.

Supports memory-less render targets (on iOS/tvOS).

Better GPU control on multi-GPU systems.

Lower CPU overhead of graphics API calls.

See the advantages and disadvantages of using Metal below. Metal has a larger feature set on Apple platforms than OpenGL ES. More info See in Glossary, tvOS and macOS (Standalone and Editor). Unity supports Metal on iOS Apple’s mobile operating system. There'll be plenty of reasons to install El Capitan on older Macs even if you don't get the benefit of Metal support: Features like Split View, an improved Spotlight, improved Safari, Mail and Notes, easier to use Mission Control and much more.Metal is the standard graphics API for Apple devices. It's worth noting that Apple has not posted system requirements for El Capitan on its web site yet, though right now the developer beta runs on all Macs that were compatible with OS X Yosemite when it came out last year - that includes Macs that were manufactured in 2008. Intel's integrated graphics hardware is used extensively throughout the Mac product line, while discrete Nvidia and AMD graphics processors are used on some systems like some 15-inch MacBook Pros, higher-end iMacs and the Mac Pro. That includes graphics hardware made by Intel, Nvidia and AMD.

iMac Retina 5K, 27-inch (late 2013 and later).

MacBook Pro 15-inch Retina (Mid 2012 and later).

MacBook Pro 13-inch Retina (Late 2012 and later).

MacBook Air 13-inch (Mid 2012 and later).

MacBook Air 11-inch (Mid 2012 and later).

Gpu metal support