Get Metal performance with OpenGL ES, and triple your draw calls, without changing a single line of your OpenGL ES game code or shaders. MoltenGL is an implementation of the OpenGL ES API that runs on Apple's Metal graphics framework. With MoltenGL, you get many of the performance benefits of the Metal framework, while maintaining compliance with the proven OpenGL ES API.
On the left, a section of OpenGL GLSL shader code. On the right, the same shader code, automatically converted at run-time to Metal MSL shader code.