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Classics Revisited
Posted on 2010-10-12 20:39:14 |
I've been busy these past months with getting my emulator back in shape. I also wanted to test the performance of my new JIT compilation engine, so I decided to try two games that, in my opinion, have an interesting load on the CPU while using basic PS2 hardware.
 
Well, these choices were pretty obvious. Quake was one of the first games that I tried to support in the emulator... I also saw that there was a Doom port for the PS2, so I decided to try it out. While it didn't take too much work to make these run, I'm kinda disappointed by the performance of both games: Quake runs as fast as with the old compiler engine and Doom doesn't work very fast either. So, what I'm realizing now is that it's another case of premature optimization. I thought the generated code would be a lot faster and that it would make most games run at interesting speeds, but it's really not the case. But, on the other side, the new JIT compiler framework is a lot cleaner and generates cleaner code too. For example, I wasn't able to target the x64 processor properly beforehand, while this time, I'm able do it without any problem. That's what I'm going to work on next. I don't think there's going to be a big difference between x86 and x64, but it's worth trying. I also thought of other solutions that could make a big speed difference, but I'm still not sure if I'm going to implement them yet. |