DOOM 3 & DX9 [Sep 17, 2003, 7:08 pm ET] – Share – Viewing Comments
With all the discussion lately about how Half-Life 2 will run on ATI hardware
compared with NVIDIA accelerators, BonusWeb.cz
shot off an email to id Software's John Carmack to ask how DOOM 3 and other
games are likely to be impacted by the difference between the two graphics
platforms running DirectX 9. Here's how he responded:
Unfortunately, it will probably be representative of most DX9 games. Doom has a custom back end that uses the lower precisions on the GF-FX, but when you run it with standard fragment programs just like ATI, it is a lot slower. The precision doesn't really matter to Doom, but that won't be a reasonable option in future games designed around DX9 level hardware as a minimum spec.
Sure, you can praise nVidia for trying to raise the bar in doing FP32. But then you have to wonder why they put in FP16. Especially since they write their drivers to operate in FP16 and not FP32.Right, I know what both cards support, that little babbling was just wondering how it would turn out if both cards could run at FP32 or FP24.
Well, at least we know Nvidia takes these criticisms to heart, so this most likely will not be a problem in their next core. Now hopefully that core will be out next spring, which is when I plan on upgrading. I really don't want to have to buy ATI.
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