Enabling DLAA in ACC

With DLSSTweaks tweaking tool it's possible to enable DLAA in ACC.
DLAA is Nvidia new AI-based anti-aliasing mode and it works on native resolution to improve image quality.

Those wanting to see how DLAA compares to DLSS and TAA can check the video below.

To enable DLAA in ACC you'll need the following:

1. DLSSTweaks 0.123.8 : https://github.com/emoose/DLSSTweaks/releases
2. DLSS DLL 3.1.1 : https://www.techpowerup.com/download/nvidia-dlss-dll/
3. paste both DLSSTweaks files - dlsstweaks.ini and dxgi.dll - in \Steam\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64
4. edit dlsstweaks.ini:
   1. ForceDLAA = true
      
   2. OverrideAppId = true
      
   3. DLAA = F
      1. ACC uses preset C by default, so you can also try to apply that instead and compare it to preset F
5. enable DLSS in ACC video options (if you're not already using it)

I've tested in single player and DLAA is ON
However, if you want to confirm it's active by yourself, just follow the instructions inside dlsstweaks.ini
I still didn't test it in multiplayer yet (trying it later, nonetheless), so better to be advised that it can be seen as a cheat in multiplayer due to how it works.

EDIT: forgot to mention that it may work with DLSS 2 as well, but overriding presets is exclusive of DLSS 3

EDIT2: (tested) there are no cheat issues in multiplayer

 

Interesting. I skipped the change of the OverrideAppId and the DLAA profile, just setting:

Code:

ForceDLAA = true

It works

The beta version even has the option to set custom resolution parameters, so the forced DLAA is no longer necessary.
You can just modify the DLSS quality levels and shift them by one, or define your own. Quality is now DLAA, Balanced the previous Quality mode, ..

Code:

[DLSS]
ForceDLAA = false

[DLSSQualityLevels]
; ForceDLAA must be disabled above for these to take effect!
Enable = true
UltraPerformance = 0.33333334 ; Ultra Performance
Performance = 0.58            ; Balanced
Balanced = 0.66666667         ; Quality
Quality = 1.00                ; DLAA

Custom resolution scaling works as well

 

There is a huge performance difference for my setup comparing DLAA with the previous workaround using the DLSS+DSR/DLDSR in combination.

DLSS Quality + DLDSR/DSR
fps: 77


DLAA
fps: 104


Custom DLSS (0.92)
fps: 110


TAA
fps: 113
3840*2160

DLSS Quality
fps: 144

 

With DLSS+DSR/DLDSR seems you're upscaling the rendering process to 5760x3240 (x2.25) while in DLAA you're rendering at 3840x2160, so the performance difference is expected.

 

The quality difference shows as well, DLAA is not much better if not worse than TAA. DLDSR 2.25x + DLSS Quality is just different level of clarity and details.

 

In my system I notice a small improvement in antialiasing in DLAA compared to TAA.
For instance, lines seem less jagged and fences are bit more detailed as well, less roughness.

When compared to DLSS there’s much less ghosting when using DLAA, noticeable when cars are further ahead on track, although I don’t know if it’s due to DLAA or DLSS 3 instead.

I’m currently using DLAA, changing from TAA, and until now I didn’t noticed any artefacts, but I only tried during day racing, yet to test it at night and/or with rain.
Also I still didn’t checked the frame rate impact it may or may not have and although there isn’t any perceivable performance loss, I’m willing to accept some may exist, visible when measured with a frame counter.

 

Try dlss 2.5.1, it has the least amount of ghosting, 3.1.1 is smeary in comparison.
DLDSR 2.25x + DLSS Quality, and I do not use any sharpening at all, picture perfect.
If your system can't stomach 2.25x try 1.78x, still better than all other options with TAA or DLAA.

 

Great suggestion, much appreciated .

Running with DLDSR 2.25x @5760x2400, DLS quality and DLSS 2.5.1 image is stupendous and I'm getting from 5% to 10% better performance over DLAA/TAA without DLSDSR @ 3840x1600.

Also checked DLAA (DLSS 3.1.1) vs TAA frame rate and it's indeed identical in my system; differences are negligible +/- 2 FPS in favour of either DLAA in some parts or in favour of TAA in others.

 

If you start seeing weird things with ACC running at DLDSR resolution, set desktop resolution to match DLDSR.
https://www.racedepartment.com/threads/dldsr-better-aa-with-samsung-g9.253083/

 

Found interesting discussion in reference of DLAA vs DLDSR + DLSS

 

DLDSR is only wise to use when your GPU isn't running at 100% right? Only when your GPU is at 80% load so it has some headroom?
I'm running triple 27" 1440p monitors with my graphics set to mix of High and Epic and my RTX 4080 is at 100% load. Do DLDSR isn't wise to use for me I presume.

 

How can I show this overlay in-game?

 

Get DLSS SDK from nvidia and enable it. https://github.com/NVIDIA/DLSS/releases https://github.com/NVIDIA/DLSS/tree/main/utils

 

Thanks!

 

Doesn't seem to work here? Added the registry key.. but still no overlay in-game

 

Did you you change the nvngx_dlss.dll to the one included in the sdk?

 

Yes. Will try it once again

 

Okay, now I get the overlay. But DLAA isn't active for some reason.



This is my dlsstweaks.ini file

; DLSSTweaks by emoose - https://github.com/emoose/DLSSTweaks
; Wrapper DLL that can force DLAA onto DLSS-supported games, along with tweaking the scaling ratios & presets used by them
;
; DLSSTweaks now offers two ways of loading itself in, to help with systems that had issues with the older method:
;
; - Leaving the DLL filename as "nvngx.dll" will let it wrap the nvngx.dll DLSS module, usually has the best chance of working since it requires less code hooks to be installed.
; However this method does need a registry change to be applied first to stop DLSS from checking the nvngx.dll signature.
; The included "EnableNvidiaSigOverride.reg" file can handle this for you, just double-click -> Run -> Yes to all prompts
; (This only affects Nvidia specific signature checks, not anything to do with Windows)
; In case it wasn't included, reg file can also be found at https://github.com/emoose/DLSSTweaks/blob/master/EnableNvidiaSigOverride.reg
;
; - Alternatively, a legacy method can be used by renaming the DLSSTweaks "nvngx.dll" to one of the following names instead.
; (different games may require certain filenames to load in properly, and some games may have issues with this method altogether, the nvngx.dll method above is recommended)
; - XInput1_3.dll
; - XInput1_4.dll
; - XInput9_1_0.dll
; - dxgi.dll
; - XAPOFX1_5.dll
; - X3DAudio1_7.dll
; - winmm.dll
;
; If you find a DLSS-supported game that doesn't work with either of these methods please let me know!

[DLSS]
; ForceDLAA: forces all DLSS quality modes to act as DLAA instead, making the game render in full-res while DLSS applies itself over it
; To use this just enable any DLSS quality in the game, with this tweak enabled they'll all render at full resolution instead
; The game might change mip biasing depending on the quality level however, so feel free to experiment with them!
;
; Note that if DLSSQualityLevels:Enabled = true then ForceDLAA won't be applied, and ratios will be used from that section instead
; You can check if DLAA is active by using the OverrideDlssHud tweak below, the overlay text should mention both render resolution & upscaled resolution, if they match then DLAA is active
; If the game has problems running with full-res DLAA it could be worth changing the ResolutionOffset setting in Compatibility section below
; DLSS Preset F is recommended for use with DLAA, you can set that in the DLSSPresets section below
ForceDLAA = false

; OverrideAutoExposure: allows forcing DLSS auto-exposure to be enabled/disabled/left at default
; Certain DLSS2 titles may have an "AutoExposure" option in-game, which might fail to activate with DLSS3.1
; In that case you can force it to enable here
; Some early titles released before AutoExposure might also benefit from having it forced (reducing ghosting issues in certain titles)
; More info about auto-exposure at https://github.com/emoose/DLSSTweaks/issues/53#issuecomment-1479820194
; Set to 0 to leave it at default, 1 to force enable, or -1 to force disable
OverrideAutoExposure = 0

; OverrideDlssHud: allows force enabling/disabling the DLSS debug display HUD overlay
; The HUD will display on bottom left of screen in-game when enabled, some titles may draw effects on top of it though
; For those it's recommended to try disabling any post-process effects
; Works with both release & dev DLSS DLL types
; Set to 0 to leave it at default, 1 to force enable, or -1 to force disable
; (if overlay doesn't seem to draw try setting this to 2 instead to make it use a slightly different method)
OverrideDlssHud = 1

; DisableDevWatermark: removes watermark shown when using dev DLL
; Can also remove watermark on certain versions of DLSSG/FrameGeneration
; Only useful if you're using a dev version of DLSS, most won't need this
DisableDevWatermark = false

; WatchIniUpdates: watches the dlsstweaks.ini file for updates & tries applying changes during runtime
; Should allow you to change presets or quality ratios / DLAA during gameplay, by simply editing the dlsstweaks.ini while it's running
; Depends on the game whether updates will actually apply or not, some titles may work immediately, while others may need to have DLSS mode changed in the in-game settings first
; Unfortunately many titles can't have ForceDLAA/DLSSQualityLevels changed at runtime with this, but DLSSPresets should hopefully update fine
WatchIniUpdates = false

[DLLPathOverrides]
; DLLPathOverrides: allows overriding the path that a DLL will be loaded from based on the filename of it
; This can be useful if you're prevented somehow from changing any of the game files, preventing you from changing DLSS DLLs easily
; (eg. RGL launcher which always overwrites DLSS with an older version)
; Can also be useful if you use a global injector setup & want every game to use a single DLSS DLL
;
; Format of this section is the following:
; (note that ";" indicates the line is a comment, remove it for DLSSTweaks to use that line)
;[DLL name] = [path to load from]
; For example:
;nvngx_dlss = nvngx_dlss_new.dll
;
; Full paths can also be specified too, including spaces (no need to use double-quotes around it):
;nvngx_dlss = C:\Program Files (x86)\Steam\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64\nvngx_dlss.dll
;
; Other DLLs such as DLSS FrameGen (nvngx_dlssg) can also be overridden using this too (it's only recommended to use this on DLSS related files however):
;nvngx_dlssg = C:\Users\Username\Desktop\DLSS Releases\DLSS FrameGen\3.1.10\nvngx_dlssg.dll

[DLSSQualityLevels]
; DLSSQualityLevels: allows overriding the ratios that DLSS uses for each quality level
; Note that enabling this section will disable the ForceDLAA setting above
Enable = true

; Ratios/multipliers applied to each axis of screen resolution
; Set to 1.0 to force this quality level to use full resolution (ie. DLAA)
; Values are limited to range 0.0 - 1.0
UltraPerformance = 0.33333334 ; Ultra Performance
Performance = 0.58 ; Balanced
Balanced = 0.66666667 ; Quality
Quality = 1.00 ; DLAA

; UltraQuality: some games may allow this to be chosen if uncommented (remove the ";" at the start) and set to non-zero value
; Very few titles actually allow using this though, but a small few may show an option for it once enabled, giving you an extra DLSS level to choose from
;UltraQuality = 0.77

[DLSSPresets]
; OverrideAppId: for some games DLSS might enforce certain DLSS3.1 presets, even when game requests them to be changed
; Preventing any of the DLSSPresets tweaks below from being applied
; To get around that you can enable OverrideAppId to make DLSS think that this is a generic title instead
; Titles that are known to require this for DLSSPresets to work:
; - Dying Light 2
; - Shadow of the Tomb Raider
; - Death Stranding
; - Cyberpunk 2077
OverrideAppId = false

; DLSS preset overrides for each quality level: set to Default to leave the preset set to whatever game/DLSS decided for it
; Or set to A / B / C / D / F to try forcing that preset instead.
; Presets were added in DLSS 3.1, these are essentially the different kinds of DLSS 2.x DLL versions, all merged into 3.1 as these presets
; (so eg. instead of picking the best quality DLSS DLL for your game, you'd just find the right preset for it instead)
; For descriptions of each preset see https://www.reddit.com/r/nvidia/com...blishes_dlss_super_resolution_sdk_31/j81f9te/
DLAA = Default
Quality = Default
Balanced = Default
Performance = Default
UltraPerformance = Default

[Compatibility]
; ResolutionOffset: offsets both resolution axes by this value when DLAA is being applied
; Some games might not function well with full-resolution DLAA for whatever reason
; Subtracting a tiny amount from the resolution first may help with them though
; This offset is only applied to DLAA modes (either from ForceDLAA, DLSSQualityLevels 1.00, or the game setting DLAA itself)
; Titles known to require this for DLAA to work:
; - RE Engine titles (set to -1)
; - Crysis 3 Remastered (set to -1)
ResolutionOffset = 0

• I've placed the dlsstweaks.ini and nvngx_dlss.dll file in the folder: C:\Program Files (x86)\Steam\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64
• I also ran the EnableNvidiaSigOverride.reg file
• In-game I have set it to DLSS Quality

What am I doing wrong here?

 

Just use DLDSR with DLSS to compensate for higher res overhead, DLAA is not worth the trouble IMO.

 

I’m running 27” 1440p triples. So DLDSR is quite a big impact. Even with a 4080.
And the downside of DLDSR is that it’s systemwide. So every game makes use of that. And that’s not always beneficial.