Material issue with Path tracing

I’m doing some testing with the new PT in 2.10 and I just wanted to flag an issue I’m having where it seems to be smoothing textured surfaces. See attached two screengrabs of the timber texture on the table. The results are very different, it’s almost like it’s denoised the texture for real time, and then also for render. When I turn on PT, the viewport smooths out the texture, which I thought was just for speed of real time. I have tested a couple of different settings with the display setting for PT, but this smoothing of the texture happens on all.

Any suggestions or recommendations? It seems like the textures is changing or maybe the PT version is actually more accurate? I’ve attached some screen grabs from the real-time view in D5 to show how that looks before rendering.



D5 Render Version: 2.10
Graphics Card: RTX 3080
Driver Version:
Issue Description:
Screenshots/Videos Description:
Steps to Reproduce (optional):

Hi @henry1

I apologize for the inconvenience. Which wood texture was used for the table’s surface? Let me know. Thank you.

Hello,

It is one of my own, downloaded from Materials of the World, 8k quality.

Hi @henry1

Thanks for the confirmation. In the recent 2.10 Update, we have addressed a reflection denoiser issue which was prevalent in the previous 2.9 Version. May I know if all of these PBR Maps are complete with this material? If it is, I suggest modifying the Roughness Parameter to make the texture more prominent if you find the current result ‘too smooth’

Thank you.

Hi there,
I am now away until 27.02.25 on holidays but on my return I will test things out. I have loaded in all the maps, normal, roughness, albedo (which are the ones provided with the MOTW textures). As I say in the non PT the texture seem to work just fine. Maybe you can download and test a texture from them. I have just added a black base to make it look like a stained timber.

Hi @henry1

We are currently identifying if what you have experienced is “under expectation” or a bug, when you return can you send us a the Material that you have used? Nevertheless, we are aware of these changes that are caused by Path Tracing and are working to optimize this in subsequent releases. Thank you!

I seem to have the same roughness map problem as you on your wood.

Keep me updated as I think it looks like a bug, but I’m yer to test it on more materials, maybe run some test, as seems I’m not the only user, hopefully a simple fix

Hi @henry1 @julienfischel

We will be optimizing the effects of Path Tracing, especially on Wood Texture,s in the next release. Thank you for your patience.

Hi @henry1

We’re gathering feedback on the new Path Tracing in D5 Render 2.10, especially regarding the Custom GI Parameters. To help us optimize Path Tracing, please share the Custom GI settings you’re using in your current scene. Your input is very valuable.
image

Additionally, do you mind sharing this particular file with us for further testing? Please send it to support@d5techs.com and have it title “Clov - Forum PT Testing

Hello, I’m back from my holiday, I’m just working my way through a bunch of things but on my list is to get this sorted for you. I can’t share the texture as that infringes on the licence but I will try to replicate with a free texture of something like that.

Hi @henry1

Thanks for getting back to us. Would it be possible to collect your D5 Render File for us to test and use on Path-Tracing’s further optimization in the future?

We are currently feedback on the new Path Tracing in D5 Render 2.10, To help us optimize Path Tracing, please share the:

Your input is very valuable. Thank you.

From my tests I have no errors in reflections with PT or RT (D5 2.10). I also mentioned this in the post you reported.

RT

PT

This scene has its own wood material. Later I will make a test with the woods from the D5 library.

PT + D5 Asset ( Yellow Maple Wood).
I just raised the base color to 0.0.0 to see the reflections.

Hi @paperless

Indeed, I saw your replies and tips regarding this particular issue. Thank you~

Hi @Clov I sent over my working file last week for you to check over. Do let me know if you have any further thoughts on this and if it’s a normal issue or not.

Hi @henry1

We appreciate you sending your files. After reviewing them, we’ve found that the result is under expectation, primarily due to the Path Tracing implementation. We are currently gathering feedback on the new Path Tracing in D5 Render 2.10 to ensure we can enhance its performance in subsequent updates. :bowing_man:

Heya, ok that’s good to know, so it’s an expected result. Glad to have helped and let me know if you need anything else. Hopefully the next update is able to fix these small aspects.

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