OpenGL is a big, powerful, sprawling mess. Penumbra tries to distill it down to its core elements, and to make it straightforward to develop rich, multi-threaded applications around that core. This is a work in progress, and if you have any ideas on how to better accomplish these goals, let me know.

• Getting Started
• OpenGL
  • Shaders and GPGPU
• Applications
  • Callbacks
• Blog entries

YourKit has given me a free license for their profiler, which has been extremely useful. All they asked in return is that I show this:

YourKit is kindly supporting open source projects with its full-featured Java Profiler.
YourKit, LLC is the creator of innovative and intelligent tools for profiling
Java and .NET applications. Take a look at YourKit’s leading software products:
YourKit Java Profiler and YourKit .NET Profiler.

I think that’s pretty fair.