How to boost your Doom3 performance by 40% on ATI hardware

Dont worry Humus it wont happen again but can you reply to my private message"Is this how you do it?" just delete the other one I sent you just please reply to the one above

 

I finally know how to uncheck application
preference. I went to the desktop right clicked the I clicked settings
the it showed the 9800pro properties I went under 3D then I went to
Direct3D then I clicked custom and I unchecked application preference.
Now here are my questions since application preference is now unchecked
what level do you guys recommend is set my AA & AF to? Also do I do the same
process for both Direct3D & openGL? and his this what guys meant when you
said control panel? And should I enable Tru-Form for Direct3D & openGL
For the AA &AF do I put quality or perormance?

 

Only worry about OpenGL and I would do 8x or 16x AF with Humus's tweak. The other settings are your call.

 

newbie...

Hey guys I happened to stumble on this rather awesome website through an article posted in www.xbitlabs.com that an ATI employee had found a tweak giving quiet the boost in Doom 3 gaming. I just timedemoed Doom3 at 1024 x 768 at High setting and I got, by looking at your scores, what sems to be a rather lowly 30 fps average. I timedemoed then at same res but Ultra settings and I got around 28.1 fps average. I have a Dell iXPS with 3.4 ghz proc, 1 gb ddr 400 mem, 256 mb mobility 9800 and I believe the Catalyst 4.8 drivers. I have not tried Humus's mod yet. But before I try that I was curious to see if you guys think considering the graphx card I have right now whether my scores should be higher or not. Thanks a lot.

 

Suryad, AFAIK the mobility 9800 is on par with a real 9700 pro or non-pro. First mobile GFX with 8 shader pipelines. So the score you have looks alright.

You get exactly what I am used to at high settings, without the Humus' tweak and no AA/AF CP forced. I think your score is, as it is should be. Do some tweaks yourself to find the balance for your system(if you already haven't done so), and then download the tweak to see if you get any boost out of it.

If my assumption is correct that our specs are almost the same, effectively, then you could do a little better or worse than my +43 fps avarage at High setting, 1024x768, CP 16xAF Quality, HQ/HQ).

I only moved beyond the low 30fps(and that was without any AF), after I downed the tweak. That man is a genious

 

Suryad, i don't know if you know that the score you have on a portable is astounding. Noone was expecting that you could get so high scores with the latest game six months ago

 

Actually, Suryad could do better than me, as it is a 256mb card! I missed that in his specs. Most impressive portable, though it must be heavy(relatively) and no doubt consume alot of power. If this trend continues, a 12 or 16 pipe mobility card, could be out in a year or two

Suryad, begin tweaking such things as cache and such(use all that RAM on your system), and you should get even more performance, out of that sick little thing you have there.

This tweak guide is highly recommended, and it'll compliment Humus' tweak very well, IMO:

http://www.tweakguides.com/Doom3_1.html

 

Thanks for all the prompt replies. I definitely tweaked a lot more on my machine but those are mostly OS tweaks regarding memory and cache usage. The machine runs incredibly fast stock but after those tweaks I am blown away in the gernal performance of the machine. The fact that I am booting in less than 20 seconds including post is a testament to the machines capabilities and I will keep on tweaking to extract the max out of it. I will try to install Humus's, who I think is a genius to have caught that. patch and see how things go tomorrow. I am only using Doom 3 as a benchmark to see how the machine performs. Frankly I am not that interested in playing the game because it just does not suit my style of games. Too futuristic and scary methink haha. Anyway I will let you guys know what happened once I get all the tweaks and stuff worked out in detail hopefully tomorrow after I finish my work on campus. Once again thanks for the lively discussions that take place in this forum and especially this thread. My knowledge has increasd even though I do not understand more than 60 percent of the conversations regarding the texture pathways and all that technical stuff haha. LAter

 

Further performance increase

I have found that changing r_renderer from "best" to "arb" gives a dramatic performance increase on ALL cards. Usually improving framerate by around 15fps

 

Re: Further performance increase

How about the impact on image quality?

 

Re: Further performance increase

Dunno about that. I've tested "arb" on my X800 Pro and it's definitely slower than "best" for me ("best" on an X800 Pro is "arb2"). It also looks a lot worse. It may help on old cards though.

 

Re: Further performance increase

Moth whats your videocard & your system specs?

Can somebody test this to actually confirm that is a effective
im running on a Radeon9800pro 128MB anyway someone just test this to make sure it acutally works 8)

 

i think that the hack is really awesome but it reduces the quality of the lightinng is this bug known?its somehow uses less bits per pixel on lightning or something like that !!!did anyone show this quality loss?

 

Utrion you did the tweak and you lost lighting quality?How much FPS did you gain by doing this and did you set it to "arb" or "arb2"?

What is your videocard & system specs?

 

i meant the HUMUS tweak the latest
i didnt change the path
here are my specs
CPU :2400+ FSB 333 2x512MB (7-3-3-2.5)
BOARD :MSI-K7N2L BIOS 4.0-3.13nf2
GFX :Sapphire 9700pro CAT X.X(TOP SECRET BETA)
HDD0 :IBM Deathstar 40GB HDD1 :Maxtor 160GB EIDE
DVD-RW :NEC ND-2510A DL
DVD ioneer 120
MONITOR:EIZO F35 15"
O/S :Windows XP SP1+1.5winupdate

 

This problem has already been solved and the solution will improve your FPS. Go under your 9700pro properties then go to 3D then openGL uncheck "application preference" for both AA & AF and set it to 8X or 16X.
This will improve the lighting and your FPS. If you havent already enabled VSYNC enable it and if VSYNC is enabled turn on Triple-Buffering. That will remove any tearing and improve image quality. You were having lighting problems because your AA & AF whas set to "application preference" when its set like that the game uses AA & AF on textures that need it so if you uncheck "application preference" and set the AA & AF to 8 or 16X all the textures will use the AA & AF. Because when Humus changed the shadering code he made it more ATI friendly by adding some AA & AF to the code thats why when you force AA & AF by the control panel you get better performance. Its also much more convenient for now and the future because not all game support "application preference"(IN-GAME) AA & AF...

 

no the problem is a quality loss the lightning is using less precision that other thing;( it cannot be improved through this way just tested

 

Did you enable AA & AF by the control panel it may not be the solution to your problem but it will gain you some FPS

If you notice anything weird with some floors thats because of BUMP_MAPING its normal just ingnore that because lots of people were complaing about that. But your lighting situation is caused by the TWEAK the new shadering code(TWEAK) is a bit darker then the original state of the game..But most of the time you dont notice a thing. Anyway like I was saying before uncheck "application preference" and set the AA & AF to 8 or 16X you will see a minor increase in most cases or major in some I strongly recommend doing this 8) but as for your lighting im not sure but I think it might me the the new shadering code(TWEAK) :?

 

Milkman, you can't set AA to x8 with ATI cards(unless you use TAA, but that requires V-Sync and a very good fps avarage to benefit from it, with basic 4xAA on). Besides, just 2xAA is going to make an substanciable impact on performance. Learn the difference(s) between AA and AF, as they are quite different. I agree, he should force 16xAF Quality for IQ, but he shouldn't touch AA. Anyways, changing AA and AF isn't going to help him with the light problem, as those settings only affects texture/mips and IQ, but not anything that relates to lights, AFAIK.

Utrion, you're probably right it is a precision problem. Try using the ARB2 path instead, as it should give you 32bit(24bit on ATI) for whatever can justify the use of that precision.

 

Actuall Tekki I was reffering to the Humus Tweak I clearly stated that I dont have the corrct answer for the Lighting problem. I suggested that he brought up the AA & AF by the control panel to gain a performance increase in for the Humus tweak