Negative LOD Bias and DLSS

Should Texture Filtering - Negative LOD Bias in NVIDIA Control Panel should be set to Allow for games in which DLSS is used, for best image quality/graphics?

Related: https://www.reddit.com/r/nvidia/comments/11ptmvp/can_someone_please_help_set_the_record_straight/

I've always set my NVIDIA Control Panel settings to TweakGuides recommended values, but it's apparently no longer entirely relevant.

 

I always used Clamp during the last 8 years (since I switched back from AMD to nVidia) with forced 16x AF and High Quality settings. I just "unclamped" it now. Thanks for info. I shall see if it does anything visible (I doubt I will notice anything, especially without comparing screenshots, but...).

 

clamp doesn't do anything to any dx games since fermi.

 

Negative mipmap bias works for DX12 even, like in CP2077 and Dead Space Remake

DF talks about applying mipmap bias with DLSS in their Dead Space Remake PC video

 

Yeah try the method mention at 10:35 in DF video

 

Clamp does nothing at all.
Nvidia themselves has said so.

Clamp/Allow was implemented for D3D titles that defaulted to setting a negative lod and had Tri/Bilinear only filtering, though there were a few really well known games that did so even with built in AF in the late stages of D3D9.

Clamp would round anything lower than 0 back to 0 when application AF or Driver AF was in use preventing extreme mip crawling on adjacent/diagonal surfaces..

auto-lod implementation replaces the clamp/allow system and is fine-tunable by the user with Profile Inspector via the MIP Bias DX and OpenGL controls, with opengl also being applicable to Vulkan in some unique cases,

this was actually originally a driver bug that was provoked by forcing TrAA to Super, turned into an actual feature when reported to NV.

https://forum.studio-397.com/index....ge-adjust-it-nvidia-setting-not-broken.42957/

 

I will clarify my post, because I was intending to be replying to janos who was using the clamp setting.

 

It does indeed, unless something changed it may still work on opengl, but i cannot confirm that with Doom or opengl based emulation since they have moved to using Shaders for the AF masks.

It definitely doesn't play a part in in DX titles anymore though.

as indicated in the studio-397 url, on DX the lod clamp setting isn't required for any usage of the mip bias settings for DX, no matter if you were using a driver that still required the sparse grid hack, or the guzz patch.

 

^ Good gosh almighty, now I've got a headache. That 2nd screenshot looks like dog crap.

Now what setting did you change to have such an effect and where is it located?

 

Well, as expected, it shows exactly that the clamp option does nothing. It is one of the best examples of ancient cruft in Nvidia's settings panel that should have been resolved a decade (or two...) ago. Or, better, the option should have been revived to work with modern APIs.

 

If it worked, a setting of -3 or +3 would both look like 0.
That it sets itself to clamp when changing some other texture filtering settings really does nothing but cause confusion. Really baffling why nobody who is in charge of the control panel cares about such things.

 

@WhiteLightning Agreed and dark theme as optional

Congratz on 30K messages!