Hi i m iphone fresher game developer. The thing i need is how the Opengles works in iphone like where to start Opengles simple applications like drawing lines and moving it e.t.c. The Xcode generates the default animation code for Opengles that i think a complex thing for me to start develop from that. So, i need a complete description of how does the context is given to opengles sdk so that it handles drawing. I know a few things about Quartz2d that it get the context using some methods like "UIGraphicsGetCurrentContext" and we can draw things using those context. But didn't get opengles. Can anyone guide me!!!!