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Fredy
03-26-2001, 10:54 AM
1/ what is a BSP-tree and why/how should i use it.
2/ witch algorithm can i use for sorting wisible / hidden objects.
3/ need a little theory about 3D engines what all can do a game engine.
4/ and a little theory about multitexturing

HFAFiend
03-26-2001, 11:26 AM
1) used to determine (quickly) what polygons are visible (used in levels with many hidden faces, like a quake level)

2) just use a z buffer, but backface culling and the BSP-tree are often used to speed up processes

3) Too broad of a question...read this http://www.opengl.org/developers/documentation/OpenGL12.html ...you'll figure out what you can do (also 'OpenGL Progamming Guide' is a good book to get)

4) not much theory...you use one function to tell the card which of the textures you're supplying information about.... http://www.opengl.org/developers/documentation/OpenGL12.html has an apendix on multitexturing

[This message has been edited by HFAFiend (edited 03-26-2001).]