Or even these amazing lighting and shadow effects (via Fabien Sanglard): “OMG!” you may think, “well why would I ever want to use OpenGL ES 2.0 then, if it’s just extra work?!” Although it does add some extra work, with OpenGL ES 2.0 you make some really cool effects that wouldn’t be possible in OpenGL ES 1.0, such as this toon shader (via Imagination Technologies): OpenGL ES 2.0 uses a programmable pipeline, which is a fancy way of saying all those built-in functions go away, and you have to write everything yourself.OpenGL ES 1.0 uses a fixed pipeline, which is a fancy way of saying you use built-in functions to set lights, vertexes, colors, cameras, and more.If you are new to OpenGL ES programming, here is the difference between OpenGL ES 1.0 and OpenGL ES 2.0: This tutorial does not assume you have read them first, but if you have you might want to skip over the sections you already know.īefore we get started, I wanted to mention that this tutorial will be focusing on OpenGL ES 2.0 (not OpenGL ES 1.0). Note that this tutorial slightly overlaps some of the other OpenGL ES 2.0 tutorials on this site. It should be a good introduction to GLKit, whether you’ve already used OpenGL in the past, or if you’re a complete beginner! In the process, you’ll learn the basics of using each of these new APIs. We will build a simple app from scratch that draws a simple cube to the screen and makes it rotate around. The goal of this tutorial is to get you quickly up-to-speed with the basics of using OpenGL with GLKit, from the ground up, assuming you have no experience whatsoever. Rather than having to write a complicated method dealing with tons of different image formats, loading a texture is now a single method call! This class makes it much easier to load images as textures to be used in OpenGL. Now with GLMath, most of the common math routines are there for you! Prior to iOS 5, pretty much every game needed their own math library with common vector and matrix manipulation routines. They’re also a handy way to get some basic lighting and texturing working. These classes implement common shading behaviors used in OpenGL ES 1.0, to make transitioning to OpenGL ES 2.0 easier. These classes abstract out much of the boilerplate code it used to take to set up a basic OpenGL ES project. The new set of APIs is collectively known as GLKit. IOS 5 comes with a new set of APIs that makes developing with OpenGL much easier than it used to be. Note from Ray: This is the fourth iOS 5 tutorial in the iOS 5 Feast! This tutorial is a free preview chapter from our new book iOS 5 By Tutorials.

Update 10/24/12: If you’d like a new version of this tutorial fully updated for iOS 6 and Xcode 4.5, check out iOS 5 by Tutorials Second Edition!

Opengl only use es 2.0 calls