Voxel Rendering Update

Here's the current progress with simple diffuse lighting. Viewing on the higher resolutions will reveal that I've still got some edge cases to go, quite literally. I think I've got some divide by zero's hiding in the block stepping code, which is why you can see the edges of the voxel blocks. While the video is recorded at 30fps, while I was capturing the video it was running at never less than 40fps, most of the time holding the constant 60fps my old LCD permits. At 1920x1200, 8 bits per colour channel. This is on a GTX680, and I'm feeling rather chuffed that not only this runs smoothly, but that it runs smoothly while recording HD video too :-)