Software BSP Renderer

sfx1999 · **Software BSP Renderer -** 14-07-2004

I am thinking of makeing a Quake 3 BSP render (software) and I am confused. I was wondering if anyone could explain how to do the following (vaguely):

polygon rasterization (converting polygons into lines)
mip-mapping (not generating mip-maps, but knowing which one to use)

I know it's a lot of work, but I have time.

Another problem I may have is after I clip models. I plan to use a coverage buffer. The problem is that I do not know how I would sort them. How would I know if one was behind the other?

Thanks for your time.

BTW, this is supposed to be a learning experience.

botman · **Re: Software BSP Renderer -** 14-07-2004

The Quake 1 source code should have a software renderer that you can look at (oh, and probably the Quake 2 source code, but I haven't looked at it).

botman

@$3.1415rin · **Re: Software BSP Renderer -** 14-07-2004

for 3d stuff http://nehe.gamedev.net is some nice sort of source for various kinds of opengl stuff. I guess you'll find something about mipmapping there as well, at least somewhere in the tuts

sfx1999 · **Re: Software BSP Renderer -** 14-07-2004

OpenGL mipmapping is automatic. You just tell it to build the mipmaps and it uses them.

Well I'm off to browse source code.

@$3.1415rin · **Re: Software BSP Renderer -** 14-07-2004

yes, I know, but I thought you dunno what mipmapping is exactly, therefore I mentioned that site. so when you know what it is, where's the problem then ?

sfx1999 · **Re: Software BSP Renderer -** 14-07-2004

The problem is knowing which mipmap to use.

@$3.1415rin · **Re: Software BSP Renderer -** 14-07-2004

why not just try ? maybe you can before calculate when it's no longer of use using big textures by just doing just some trigonometry

Whistler · **Re: Software BSP Renderer -** 15-07-2004

there are also some "cloned" Quake3 engines, may be useful for you:
http://hkitchen.quakesrc.org
http://www.planetquake.com/qbism

Maleficus · **Re: Software BSP Renderer -** 16-07-2004

Quake2 engine would be the best bet.

sfx1999 · **Re: Software BSP Renderer -** 16-07-2004

Quote:

Originally Posted by Whistler

there are also some "cloned" Quake3 engines, may be useful for you:
http://hkitchen.quakesrc.org
http://www.planetquake.com/qbism

I already know that they are engines like that. But you forgot:

Cake
Disesel

They are basically map viewers. Then there is a project not yet released called Tenebrae 2.0. It looks awesome.