The source code for DXGL is currently available via SVN. Please use TortoiseSVN to check out the following SVN repository, which is currently read-only except to the author:

https://www.dxgl.info/svn/dxgl

To browse the source code, you may use a web-based interface at http://www.dxgl.info/wiki/Special:Code/DXGL A GitHub mirror at is available at https://github.com/WilliamFeely/dxgl/ however using it for build purposes will currently cause build problems.