Picking | GameDev.net

Original Post

Mar 1, 2003 at 10:54 AM

So far, all the information I''ve read about picking says 64 items is the limit. However, I am working on an editor that renders our height maps. I need to be able to grab any of the vertices (at least 16641) so regular OpenGL picking isn''t going to work. Any ideas? "C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg."
- Bjarne Stroustrup
Realm Games Company

Brother Bob

Mod

218

Brother Bob

Mar 1, 2003 at 11:11 AM

A GLuint, which is used to identify the objects being picked, must be at least 32 bits long, which means you can pick at least 4.2 billion different items. That should be enough for most cases. 64 sounds more like the minimum depth of the name stack.

yummy_potatoes

Author

yummy_potatoes

Mar 1, 2003 at 11:13 AM

Ok, thank you. I''ll go back to that wonderful tutorial I found and see if I can implement it.

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