This is a Place and Play, no adjustments required. Safe for online play.
Download and extract to the following location :
C:\Program Files (x86)\Steam\steamapps\common\Left 4 Dead 2.
Start and play.
Please Disable in-game Anti Alias, under options, video, advanced or the sweetfx will not work.
ENB USERS WIN10
Rename the dxgi.dll to d3d11.dll
To Uninstall: Simply goto the game folder and remove any file references (D3 or DX files, enb and sweetfx files)
Nvidia Users. Enable DSR in your Nvidia control panel (as shown here), under the global settings. (I checked all the boxes to allow for all the resolutions).
ATI Users: Enable VSR here.
If Game appears extremely dark and saturated.
Make this alteration to Left 4 Dead 2.txt in the sweetFX\Preset folder. Change the #define USE_SMAA_ANTIALIASING to 0.
If you experience micro-stutters or gameplay issues.
Also, open enbseries.ini in the \Left 4 Dead 2 folder and change the line under [GLOBAL] AllowAntialias=1 to AllowAntialias=0.
This is a combination of several different setting files and programs I found I could use with one another (after some adjustments) for Left 4 Dead 2. It adds detail, shading and lighting, while enhancing colors but not altering the base colors of the game. This can be used in combination with any texture packs or add-ons.
To make adjustments to ENB, alter the enbseries.ini configuration settings file, found in the L4D2 folder.
To make adjustments to Sweetfx, go to \SweetFX\Presets and alter the Left 4 Dead 2.txt file.
The default settings file is located in the SweetFX folder, SweetFX_settings.txt, however it is not used for the settings as the
SweetFX_preset.txt file is directing it to the presets folder (alter to match, if you make change to location or name of settings file).
Using the Printscreen, will generate ingame screenshots.
They can be found placed in the Left 4 Dead 2 folder.
Use FastStone Image Viewer, to convert them to jpg or other formats.
Alter ENB and SweetFX settings as you like.
Full ENB Download available here.
Full Sweetfx Download available here.
For further information check here
Trouble Shooting: Mod
Please Disable in-game Anti Alias or effects won't work.
Install the DX9 final release if you haven't done so previously. DX9 Final Release June2010
DX install: Download and run the file, tell it to extract to c:\dx, then after goto c:\dx and run the dxsetup file.
Check to make sure you are using the newest graphics drivers.
Try disabling any turbo or overclocking software.
If you experience issues with the ENB D3D9 try this: CTD, Graphics issues.
Replace the d3d9.dll with one of the alternates provided.
Nvidia users can use this mod (Thanks to khalilsm) to allow the game to run if you have any issues.
Rename the d3d9.dll that came with this mod to d3d9orig.dll and place the d3d9.dll from that mod with it.
Thanks to Christian Jensen (CeeJay.dk) and Crosire for reshade and sweetfx.
Thanks for enb by Boris Vorontsov.
I hope you find these programs and adjustments helpful at making your game more enjoyable.
Thanks also to Mod DB and the Mod DB Community.