Playing with some OpenGL shaders and SpriteKit. There's a ton of possibilities here for really cool graphics that just aren't possible any other way. Super excited to dive into this more.
I also wrote a little app, shown in the shot, for writing these shaders right on my iPhone or iPad with a live preview. Awesome way to iterate. Instead of playing a game when I have some downtime with my phone, now I write shaders :)
The syntax highlighting was much easier to get working that I thought it would be with the text storage APIs introduced in iOS 7.
Will be sharing more as this new hobby progresses.
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