Hardware-accelerated 2D collision detection in OpenGLJul 11, 2007 |
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I wrote a better document about the algorithm. Includes source code.
The idea
Did you know you can do pixel accurate collision detection using the OpenGL stencil buffer and occlusion queries? I got this idea while working on a 2D/3D game engine (think of a side-scroller but with 3D objects).
A proof that this actually works [...]
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