Haven't seen this posted here yet, so if you aren't aware of it, the folks over at Destiny 3d have done a public release of their source tree:
http://www.indiegaming.com/site/archives/22
Check out http://www.destiny3d.com for more news & the source code download. No binaries are included, source code only, but it includes their complete DirectX8 & 9 renderers, and a wide range of tools & other libraries that were written for the project.
Destiny 3d public release
take what you can get ;}
The whole reason this release was made is because the developers simply did not have enough time to work on the project - so they felt it was better to release what they had and hopefully have someone pick up the project & continue developing things, than just have it die and disappear.