Open GL ES 2.0 co-ordinate systems
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by Chris
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Published on 2010-06-16T21:15:57Z
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2010/06/17
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opengl-es
Hi, I want to use Open GL ES 2.0 for a new game, but I have two questions.
Q: The first is how do I set up perspective views in Open GL ES 2.0 - do I need to include Open GL ES 1.0 and use glOrtho, or is there a new way?
Q: I want to use the 4th quadrant of a Cartesian co-ordinate system for my game and not use -0.5 to +0.5 for values on screen, how once the first question is answered can I achieve this?
Other resources: http://iphonedevelopment.blogspot.com/2009/04/opengl-es-from-ground-up-part-3.html
Thanks
Chris
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