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Index › Programming Questions & Help › OpenGL and 3D Libraries › Buffer picking in OpenGL
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Buffer picking in OpenGL (Read 720 times)
jeffg
Buffer picking in OpenGL
Mar 27th, 2009, 10:04am  
Does anyone have an example of buffer picking in OpenGL with Processing?  My P3D buffer draws are way slower than my real draws.  It takes a several seconds for my buffer to report on what I clicked.  Rendering 500,000 objects, which runs at a nice 60fps in OpenGL.  I think P3D is choking inside the buffer or something.  Picking runs fine with 10,000 for example.
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jeffg
Re: Buffer picking in OpenGL
Reply #1 - Mar 28th, 2009, 4:25am  
For the moment, I've gotten around this "issue" by limiting the number of picking objects I draw to those easily visible to the the camera.  Described in this thread.  http://processing.org/discourse/yabb2/num_1237216635.html#5  But a example of how to pick in pure OpenGL would be nice. Smiley
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