We've had what... 2 and a half years of Metal talk?
A7, A8 & now the A9.
Yet it appears to be slower than OpenGL, and render blending differently in Scene Kit.
Which I thought might be to do with the implementation and beta-ness (alpha-ness?) of SceneKit.
Today, I see the last 3 graphs on this site, demonstrating OpenGL on an iPhone 6S is faster than Metal.
So speed might not be Metal's strength, after all.
What else is it good/better at than OpenGL?
Why, at this point in time, should someone invest their energies into Scene Kit, Metal & Sprite Kit?
When will Apple engage in actively commumicating its progress (and lack thereof) with its game and rendering engines and technologies?