Introducing MetalGL

Press Release

This older press release refers to MetalGL, which has a new name: MoltenGL. You can find more information about MoltenGL on our main web page.

Toronto, Jun 1, 2015: The Brenwill Workshop Ltd. announces the availability of MetalGL, which seamlessly brings the performance of Metal to OpenGL games and applications on iOS devices.

MetalGL is an implementation of the OpenGL ES 2.0 API that runs on Apple's Metal graphics framework on compatible iOS devices. With MetalGLOpenGL developers get many of the performance benefits of Metal, without having to abandon the proven and familiar OpenGL ES 2.0 API, or rewrite rendering logic and shaders for a different platform.

MetalGL unleashes the power of Metal's low-latency rendering to let OpenGL games and applications perform up to 3x the number of draw calls, all without changing the way the game or app use OpenGL.

It's all automatic. Developers can continue to use a single OpenGL API to build games and applications that run unchanged across multiple devices, platforms, and operating systems, including those that support MetalMetalGL automatically detects whether the iOS device supports Metal, and will use it where available. This automatic portability even extends to shaders, as MetalGL will convert GLSL shaders to their Metal Shading Language equivalents, either automatically and transparently at run time, or at development time using MetalGL's shader conversion tools.

"With MetalGL, developers have the opportunity to triple the performance of their OpenGL ES 2.0 games and apps on iOS devices without having to rewrite a single line of their game logic, OpenGL framework calls, or shaders", said Bill Hollings, President of The Brenwill Workshop Ltd., the creators of MetalGL.

More information about MetalGL can be found at

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About The Brenwill Workshop Ltd.

The Brenwill Workshop Ltd., a privately owned company located outside Toronto, Canada, is the developer of MetalGL, and Cocos3D, an open-source 3D game framework for the iOS platform.