I have an animated 3D iPhone game that I first wrote using OpenGL ES 1.1 in late 2009.
After many updates to the rest of the game, the OpenGL ES 1.1 code still runs fine under iOS 6, but I'm wondering about benefits to 2.0 that I'm missing out on, and whether it is worth converting to. I don't care about backwards compatibility with devices unable to support 1.1.
I've read this post and this post on the sister site, but some information there is no longer applicable, and I would like a perspective specifically from a gaming programmer's point of view about whether it's worth updating, rather than which I should use if I were doing it from scratch.
Thanks for your help.
[Edited to answer comments below]
This is the project. I don't need shaders, textures, or anything ES 1.1 doesn't do in some fasion (at least for a while), but would be tempted to upgrade if for example 2.0 just does it much better, or is much faster, or does something that's just so useful and/or awesome that it would be criminal not to take advantage of it, or 1.1 has some awful bug on a device that I haven't had a chance to test on.