I'm running Quake III on an eMac under MorphOS, but when I turn all the details on, it slows down horribly.
Why would this be? I thought this game was old and could run without any issues on hardware that came out around the eMac era...
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System requirements:
3D graphics accelerator with full OpenGL support, Pentium II 233 MHz or AMD 350 MHz K6-2 processor or Athlon processor, 64 MB RAM, 8 MB video card, 500 MB of free hard drive space, 100% DirectX 3.0 or higher compatible sound card, CD-ROM drive (600 kB/s sustained transfer rate)
I'm pretty sure I more than have that covered right?
For comparison purposes, on a PC Athlon XP 2500 with a 128MB Radeon 9200 Quake 3 running Windows XP gives 27-28FPS at 1280x1024 with everything turned on high, and a Dual G4 PowerMac running OS X with the same graphics card gives 23-24 fps.
So the lesser 32MB Radeon 9200 in the eMac is obviously going to do worse.
The eMac was never a gaming computer, even when Quake III first came out. It's nothing to do with MorphOS (in fact MorphOS is significantly faster than OS X).