Author: Tom Kerrigan
Date: 01:06:00 06/27/03
Go up one level in this thread
On June 27, 2003 at 02:25:54, Aaron Gordon wrote: >On June 27, 2003 at 01:58:45, Peter Stayne wrote: > >>On June 27, 2003 at 01:42:20, Aaron Gordon wrote: >> >>>On June 27, 2003 at 01:27:19, Peter Stayne wrote: >>> >>>>>In my tests my Athlon XP 2.5GHz beats a P4-3.38GHz, it's close but it does. >>>> >>>I think Carmack is partial to Intel, because he hasn't in all of the Quake3 >>>patches done a quick fix in his code, making SSE work in Quake3. Quake3 treats >>>the Athlon like a K6 and tries to use the non-existant/broken 3DNow! code. Also, >>>he wouldn't allow AMD to make an official patch out of my DLLs. Why? One can >>>only wonder... >> >>The last part of your remark here certainly was a business decision. Those DLL's >>were made by a 3rd party. First off, id would have to negotiate ownership rights >>for the programmer's code. Secondly, even if he were to give them to id for >>free, the moment you include them in an official patch, you're bound to support >>it. This requires that id test them thoroughly, analyze them for issues that >>would need to be addressed. Also, we can't know if it was a 'quick fix' or not, >>perhaps it remained broken because it wasn't a quick fix. Thing is, with Q3, >>most cpu's of the day pulled >60fps with a good GPU, whereas there were quite a >>few GPU's that weren't pulling their weight, which is why I think he focused >>more on GPU performance. He has remained faithfully honest and reliable in the >>nVidia vs ATI wars. >> > >The source code wasn't modified in any way, only compiled with profiling with >the Intel C compiler. So all of the original code remained as such, and wasn't >changed. Even so Carmack still did not allow it. > >I'm pretty sure getting the SSE support enabled on the Athlon XP/MP is no big >deal, it's there for the P3 and P4 (P4 gets detected as a P3, which has SSE, and >that gets enabled). However ID could just change the cpu id detection (very >simple) to detect an Athlon, and then use the pre-existing (and working) SSE >code. Just because Carmack doesn't do something to help AMD doesn't mean he's partial to Intel. -Tom
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