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Where can I find a good tutorial about drawing Quake 3 BSP files in OpenGL?

Graphics and GPU Programming Programming

Started by yaboiryan July 09, 2020 05:00 AM

5 comments, last by JoeJ 3 years, 11 months ago

yaboiryan

Author

July 09, 2020 05:00 AM

Hello,

I was working on my own game engine and I was wondering where I could find some information on drawing Quake 3 BSP files.

My biggest problem is that while I already have the file itself implemented, but I dont exactly know what part of the file I should be using with glDrawElements();

Thank you in advance!

21st Century Moose

13,459

July 10, 2020 02:47 PM

You could do worse than look over the Quake III source code: https://github.com/id-Software/Quake-III-Arena

Also an overview here: https://fabiensanglard.net/quake3/renderer.php

Direct3D has need of instancing, but we do not. We have plenty of glVertexAttrib calls.

yaboiryan

Author

July 25, 2020 07:12 AM

@undefined Ah thank you! I will definitely look in to that!

Promit

13,404

July 25, 2020 06:03 PM

@undefined This one might also be useful - it's old as heck but the essentials are all there.

http://www.paulsprojects.net/opengl/q3bsp/q3bsp.html

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JoeJ

4,270

July 26, 2020 12:23 PM

Promit said:
@undefined This one might also be useful - it's old as heck but the essentials are all there.
http://www.paulsprojects.net/opengl/q3bsp/q3bsp.html

I think this has some bug, so it can only import very few levels correctly. (I had used this for a long time)