2012-10-18

Interesting blog

I found an interesting blog over at http://benryves.com. It belongs to a guy that seems to share my passion for low end systems. He's working on a 2.5D engine for the TI-83 and has a bunch of different hardware and software projects.


2012-10-10

GBA 3D Rendering

I've finally put all the pieces together, and it turned out pretty good imo. The video shows a rotating torus with a rotating directional light. I'd love to do point lights, but the inverse square root needed for normalization is extremely expensive in terms of CPU time needed.

2012-10-05

Fixed point division

Found an interesting article about fast fixed point division and multiplication on ARM processors over at Henry Thomas consulting. Originally I claimed that it didn't work for the GBA, but that was a lie. Some minor tweaks and now it runs like a charm. Fixed point division used to be a major bottleneck in my attempt at 3D rendering on the GBA, and now it's not a problem at all.