Subset of the OpenGL 3D graphics API designed for embedded devices such as mobile phones.

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7
votes
4answers
2k views

iPhone 3d Model format: .h file, .obj, or some other?

I'm beginning to write an iPhone game using OpenGL-ES and I've come across a problem with deciding what format my 3D models should be in. I've read (link escapes me at the moment) that some ...
2
votes
1answer
1k views

Post processing texture sizes

I'm trying to write some code to do post processing in OpenGL ES2 on the iPhone. All is fine an dandy, except I am having trouble working out how to scale the texture rendered in the rendering step, ...
3
votes
1answer
755 views

iPhone/OpenGL-ES partially texture mapping an object

I only have a basic understanding of OpenGL, so I'm probably showing my ignorance here. I'm looking for a great iPhone/OpenGL-ES example of applying a texture (preferably from a texture atlas, but ...
6
votes
3answers
714 views

Is Frustum Culling by itself enough for Consoles and Mobiles?

Software occlusion culling is often expensive, especially for smaller and older devices. Is frustum culling alone adequate on systems that can optimally display 10k triangles at most? If not, are ...
4
votes
5answers
3k views

How can I improve the “smoothness” of a 2D side-scrolling iPhone game?

I'm working on a relatively simple 2D side-scrolling iPhone game. The controls are tilt-based. I use OpenGL ES 1.1 for the graphics. The game state is updated at a rate of 30 Hz... And the drawing ...
5
votes
1answer
1k views

How do you activate multisampling in OpenGL ES on the iPhone?

I'm experimenting w/ improving the "resolution" of an OpenGL ES based app. Apple mentions here (developer.apple.com) that OpenGL ES in iOS 4 supports multisampling... and this can improve the ...
1
vote
1answer
922 views

How can I take advantage of the iPhone 4's higher resolution screen?

I've recently tested an OpenGL ES based 2D game on the iPhone 4. I've done almost all of the development and testing so far on my 3G device. The game works fine (except for a few multitasking things)...
7
votes
4answers
5k views

Updating OpenGL ES 1.1 based iPhone game to use Open GL ES 2.0

I'm fairly new to anything OpenGL in general. I've made an OpenGL ES 1.1 based 2D iPhone game by working from sample code. I'm under the impression that OpenGL ES 2.0 is substantially different from ...
27
votes
3answers
20k views

What is the difference between OpenGL ES and OpenGL?

Android uses OpenGL ES, what is the difference between it and OpenGL?