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#3265101 - 04/09/11 12:47 PM Performance improvement mods (Low clouds/smoke/grass/shadow, no mipmaps, etc) ****
Kegetys Offline
Junior Member

Registered: 06/26/04
Posts: 71
Loc: Finland
I made a few mods that hopefully improve the game performance a bit. To use them, you'll need to install my sfsMod first, which I also just updated to work with IL2COD v1.00.13954 and up. Get it from: http://www.kegetys.net/misc (Read the readme!)

The mods themselves are:

- Low clouds/smoke/grass/shadows mods: These mods simplify the clouds, smoke, grass and shadows rendering for some FPS improvements. Download from: http://junk.kegetys.net/lowcgsmod.zip


- A low resolution textures mod. This mod will reduce the sizes of some of the DDS files in the game which have some quite crazy sizes*. It doesn't have a huge effect, but it can help a bit for the stuttering if running on a video card without much video memory. Download from: http://junk.kegetys.net/xzy/lowtex.7z (With sfsMod installed, use -mod=lowtex to use it. Use 7zip to extact.) In latest IL2COD version you can also use the new video options setting for similar effect.


- noSSAO mod. This mod will disable the SSAO effect from the game. This effect seems to have a big impact on framerate, with minimal(if any) effect on visual appearance. Especially when playing in higher resolutions disabling it can almost double the framerate, though it doesn't help for the stuttering. Download from: http://junk.kegetys.net/nossao_mod.zip (With sfsMod installed, use -mod=nossao to use it) no longer required for latest IL2COD version


- No mipmaps mod. This mod will disable the use of mipmaps from all materials used by the game. This seems to help alot to the constant stuttering the game has. An unfortunate side effect is that the textures will get an extremely aliased / "shimmering" appearance. But at least for me it makes the game perfectly playable everywhere... This makes me believe there is some very serious bug with the management of textures in the engine, it is constantly shuffling high and low detail mipmaps to the video memory which is causing the stuttering. And when the mipmaps are disabled there is nothing to shuffle. Download from: http://junk.kegetys.net/nomipmaps_mod.zip (With sfsMod installed, use -mod=nomipmaps to use it)


* By default there is, for example, two 4096x4096 textures for the pilot textures, uncompressed ~20MB normal map texture for the buckingham palace, uncompressed ~20MB normal map texture for some small ship, etc... The engine should be smart enough not to load these at full resolution unless they're needed, but reducing the sizes can apparently help a bit anyway. The mod also reduces some other textures, if you want you can delete some of them manually to use the full resolution ones instead (ie. from lowtex\$bob\3do\Plane).

A "quick start" guide for the nossao mod: (Read the sfsmod readme for more detailed instructions + FAQ!)
- Download the sfsMod v1.1 and extract the kegetys.dll into your IL2COD dir
- Edit the Launcher.exe.config file and add kegetys.dll there similar to steam_api.dll
- Download the nossao mod and extract it to your IL2COD dir too
- Create a shortcut to launcher.exe and add -mod=nossao parameter to it

You can also add the parameters (like -mod=nossao) from Steam by right clicking on the game, select properties and "set launch options" from general tab.


Edited by Kegetys (04/19/11 11:06 AM)

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#3265106 - 04/09/11 12:56 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
Sakai73 Offline
Junior Member

Registered: 04/02/11
Posts: 25
Loc: on your six
Can confirm fps rise with this as was beta tester wink On Bomber Interception over channel my fps was 50 without this at beginning and with this 69, so go ahead and try it folks smile
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#3265107 - 04/09/11 12:58 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
rkirk77 Offline
Member

Registered: 12/21/10
Posts: 104
Have you posted this on the Ubisoft Il2 site? It might be helpful for the team to know so they can come up with a fix for the game?

PS, the textures are THAT BIG??

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#3265111 - 04/09/11 01:02 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: rkirk77]
Kankkis Offline
Member

Registered: 05/28/09
Posts: 378
Loc: FInland
Bananaforum too.

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#3265115 - 04/09/11 01:05 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: rkirk77]
Kegetys Offline
Junior Member

Registered: 06/26/04
Posts: 71
Loc: Finland
Originally Posted By: rkirk77
Have you posted this on the Ubisoft Il2 site? It might be helpful for the team to know so they can come up with a fix for the game?


I'd post it on the 1C forum where the devs seem to loiter, but as it seems every thread even hinting for some problems with the game are deleted, I'm not going to bother. smile

Originally Posted By: rkirk77
PS, the textures are THAT BIG??


Yeah (That's just the diffuse map converted from DDS to jpeg, theres also a normal map of the same size). You can see them yourself if you run the sfsmod with -dump parameter and then look at the DDS files extracted to _dump dir.


Edited by Kegetys (04/09/11 01:06 PM)

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#3265124 - 04/09/11 01:14 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
rkirk77 Offline
Member

Registered: 12/21/10
Posts: 104
I am sure it's just their way of saying thank you! lol

PS, i do some 3d modeling.. that file needs to be either compressed or brought down by HALF!

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#3265136 - 04/09/11 01:25 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
MIG77 Offline
Member

Registered: 07/03/09
Posts: 587
Loc: Finland
Tested it and can now confirm this really helps in FPS (I can get over 30fps now over London). Micro stutter are still there tought. But overall very helpfull mod.
_________________________
You can get used to everything, but icicle in the a**. It melts before you get used to it.

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#3265139 - 04/09/11 01:28 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
FearlessFrog Offline
Senior Member

Registered: 01/08/09
Posts: 4714
Thanks for doing this Kegetys - will check it out.

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#3265152 - 04/09/11 01:46 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
hata Offline
Junior Member

Registered: 05/20/04
Posts: 67
Thanks Kegetys, your works have always been amazing. Hopefully it will lead the developer to the right direction on optimization.

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#3265172 - 04/09/11 02:11 PM Re: Performance improvement mod(s) (no SSAO and lower detail textures) [Re: Kegetys]
flyinfoofighter
Unregistered


I prefer my Shift Delete optimization.

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