If you haven’t played 2007’s most immersive and atmospheric shooter, or you’re back for replay, this mod is for you. This is the world of S.T.A.L.K.E.R. like you’ve never seen before, with updated graphics and added functionality that don’t change the original story or gameplay. The game hasn’t been changed beyond recognition, but rather enhanced while preserving the core elements that made it the unique experience it is.

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Technical FAQ (Mods : STALKER Complete 2009 (2012) : Forum : Technical FAQ : Technical FAQ) Locked
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Dec 7 2009 Anchor

Technical FAQ contains answers for many common questions, available in PDF format starting from page 11:

- All files with the “.ltx” extension need to be opened in Notepad or a similar program to make the edits described below.
- The gamedata folder is located in the directory you installed the game to, usually it is found at:
“C:\Program Files\THQ\ S.T.A.L.K.E.R. - Shadow of Chernobyl\”

Q: Great mod but how can I add headbob? I like it in these kind of games.

A: To adjust head bobbing:

open this file:

and copy settings from any of examples below:

default head bobbing (original game):
run_amplitude = 0.0075
walk_amplitude = 0.005
limp_amplitude = 0.011
1/2 of default head bobbing:
run_amplitude = 0.00375; 0.0075
walk_amplitude = 0.0025; 0.005
limp_amplitude = 0.0055; 0.011
1/4 of default head bobbing (this is how mod is set up):
run_amplitude = 0.00187; 0.0075
walk_amplitude = 0.0012; 0.005
limp_amplitude = 0.0027; 0.011
no head bobbing:
run_amplitude = 0.0; 0.0075
walk_amplitude = 0.0; 0.005
limp_amplitude = 0.0; 0.011

Edited by: PaulDolgov

Dec 26 2009 Anchor

Thank you very much!

Jan 6 2010 Anchor

Q: I have a 9600 Mobile chip and it does the same thing. I can run the 2009C mod with everything set to max except dynamic lighting, which causes my computer to shit itself. AA is not forced in the control panel.

A: The minimum requirement to run custom shaders on Full Dynamic Lighting is 8800GT.

But there's a great way to optimize performance without losing too much of visual appeal, this should give it a performance boost on laptops and less capable machines. Open this file with notepad:


and put 2 forward slashes in front of the graphics features like this:

//#define IMPROVED_MBLUR // Enable/Disable Motion Blur
//#define DEPTH_OF_FIELD // Enable/Disable Depth Of Field
//#define PARALLAX_OCCLUSION // Enable/Disable Parallax Occlusion Mapping
//#define SSAO // Enable/Disable Screen Space Ambient Occlusion

By default the 'gamedata' folder is located at:

C:\Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl


C:\Program Files\Steam\steamapps\common\stalker shadow of chernobyl

This worked great. I haven't played too much yet, but it seems I get a nice steady ~35 FPS with maximum selected on the graphics drop down at 1080p. Thanks.

Edited by: PaulDolgov

Jan 11 2010 This post has been deleted.
Jan 17 2010 This post has been deleted.
Apr 19 2010 Anchor

Q: Is it supposed to include motion blur? Cause I don't see it in the game.

A: There are 2 ways to increase motion blur in this mod:

Method 1 (mod's default):

Open this file in notepad:


navigate to this line:

#define MBLUR_SAMPLES int(15) // Quality(Intensity)

You can see the intensity is set to 15, you can increase that number until satisfied, 20 will create noticeable effect. With this method the more FPS you have the less noticeable the effect becomes, so you might increase the intensity 25, 30 etc.

Method 2:
another way is to use game's build in motion blur effect (less hit on performance), to use that you would have to turn off the method 1 motion blur, like this:


#define IMPROVED_MBLUR // Enable/Disable Motion Blur

put two slashes in front to turn it off, like that:

//#define IMPROVED_MBLUR // Enable/Disable Motion Blur

now right-click on your launch icon, select Properties, and in the target box one blank space after the last character add -mblur so that it looks something like this:

"C:\Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl\bin\XR_3DA.exe" -mblur

or select Properties --> Set Launch options if you are on Steam and add -mblur

after it's done, open user.ltx and find r2_mblur, pick a number between 0.000 and 1.000, 1.000 is the max.

Both methods provide different visual results, pick the one you like.

Edited by: PaulDolgov

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