How to get the up to 40% gain on ATI w/o shader replacement

Well, the first sentence would be quite sad, no? I mean, if you force AF through the Control Panel and ALL textures get filtered, I'd expect better quality in any game that, in-application, only filters one or two texture stages.

I think the issue here is the white dots and artefacts you mentioned in the other thread when running DooM3 with AF application controlled. Which does look somewhat like a bug to me, as I wasn't able to see those issues on either NV or Matrox hardware. No artefacts there when using in-game AF.

93,
-Sascha.rb

P.S. The Parhelia runs the game very, very, very slowly for me. Quite sad indeed. -.rb

 

If I remember correctly, the Parhelia has four textures per pixel pipeline. This is pretty absurdly inefficient for DOOM3-style rendering.

 

By the way, there appear to be similar performance differences on nVidia hardware between application AF and control panel AF as well.

 

how about image quality?

 

Yes, same here and all over our forums, too. Seems as if Doom3 only filters diffuse (and perhaps normal map?) anisotropically when set in-game.

No artefacts, though. Image quality looks about the same to me between CP and in-game AF.

93,
-Sascha.rb

 

Does that include smooth mip-map transitions? and thanks for checking

 

Yes. Albeit only if I leave the "Image Quality" slider in the NV control panel on "Quality". Anything below that -> Mipmap banding from Hell(tm).

I do have slight issues with moiree patterns on the grate floor textures, though. No matter what settings I use, either in the CP or in-game. Anybody seen something similar? I couldn't check it on the Parhelia, as I've only had a couple of minutes at it (visited a friend of mine).

93,
-Sascha.rb

 

ruined/

What you seem to be suggesting is that the humus tweak will only work if AF is forced on (to whatever setting) in the CP, but I've always had AF on application preference and I still got an FPS improvement with the humus tweak.

 

hm.... interesting.... could you take a screenshot please? Maybe... in the same area as that screenshot someone took in Humus' thread (comparing the AF in CP versus appPref)?

This could just be worth an argument, but I just would like to see if you don't mind taking the time...

 

Yup, will do so tomorrow--I'm sitting at my Linux box right now, and id still hasn't released the binaries.

93,
-Sascha.rb

 

thank you

 

Do you also see the thing that nggalai sees

 

Ok, that's fair enough. Still, a few fps (or just one) is worth having

 

Yes, but that's normal. It's a general problem with per-pixel lighting, especially with specular and repeative high frequency bumpmaps. It's something I constantly have to fight for my demos. There are some ways to reduce it, but it can be quite a bit more costly. NVidia have a paper on a technique for reducing specular artifacting in per-pixel lighting. I've tried it out with decent results, but it doesn't solve it 100%. I have meant to write a demo using that technique, but I haven't gotten around to do that. Maybe I'll spend some time with it this weekend.

 

Okay, I could be wrong, but isn't ingame AF bilinear and CP AF trilinear?

Also, doesn't the CP apply AF to EVERYTHING, therefore making it look better?

So a 1-2fps increase, and you get trilinear and AF applyed to everything for free? Seems a good trade to me....

Correct me if I'm wrong, i'm noobish....

 

I think this whole "application preference" AF performance increase is FUD


I had it set to AP AF before in the COntrol Panel, and used the Doomconfig file to set the degree of filtering. this was before the mod was released. Putting the original shader mod (the POW one, none of the others seem to work as good) into the Pak000 file gave me INSTANT and very CLEAR increases in framerates.