Arc a770 path tracing does not display in Unreal Engine

[Syinx]

I am using the A770 in the process, and during rendering in Unreal Engine, path tracing does not display anything. Is this because the graphics card is not supported? I really need help.I have chosen the latest driver, and the settings are also correct.

[DhannielM_Intel]

Hi Syinx,

Thank you for posting in the community.

To further investigate this situation for this issue, I would like to ask some question to pinpoint the appropriate resolution fit to your issue. Could you help me answer the following questions below:

1. When you say it does not displaying anything, can you share more about the things you want to display?
2. Can you share the graphics driver you're currently using?
3. Also, besides Unreal Engine, has this issue occurred with any other applications? If yes, could you please specify which ones?
4. Have you tried clean installation of graphics driver?

I am looking forward hearing from you.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[Syinx]

Hi Dhanniel M,


Thank u for responding to my question.


Arc a770 support path trace in ue5 , I need light to render in real time，i can use lumen,but path trace don't display.


I updated many driver versions of graphics that didn't work, and my Settings in Unreal Engine about path trace were all right,


I queried the Unreal documentation and it showed that the problem was that there was no authorization from ARC.

In this picture them it show path trace but non.

Best regards,

Syinx.

[DhannielM_Intel]

Hi Syinx,

I wanted to check if you had the chance to review the questions I posted. Please let me know at your earliest convenience so that we can determine the best course of action to resolve this matter. 

Best regards,

Dhanniel M.

Intel Customer Support Technician

[DhannielM_Intel]

Hi Syinx,

Thank you for letting me know about this, just to confirm you have enabled the ray tracing on your project, set the Default RHI to Directx 12, and enable the path tracing on Hardware Ray Tracing in the project setting? If not, could you please try doing it and once you have done it restart the Unreal Engine. Please see below images for your reference:

If the issue still persist, can you try opening a new project after you did the following steps above, and enable the ray tracing on project default then check if the path tracing will be visible on the new project. Please see the attach image for your reference:

Let me know what will be the outcome of this troubleshooting, I am looking forward hearing from you.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[Syinx]

Hi Dhanniel M,


Thank u for responding to my question.

I am set the Default RHI to Directx 12, and enable the path tracing on Hardware Ray Tracing in the project setting.

I set all set is right. Maybe ARC  In the game, path tracing is supported, but it cannot be used in Unreal Engine 5 for rendering.

This is the result of my processing,I am preparing to replace my graphics card with an NVIDIA card for my rendering work.

Thank you for your help.

Best regards,

Syinx.

[DhannielM_Intel]

Hi Syinx,

As the issue still persist, let me raise this to our Engineers to see what other options we can explore to resolve this issue. Also, while at it could you try creating a new project dummy to act as an experiment and enable the ray tracing on project default as I mentioned before. To test if the path tracing will be visible on the new project.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[Syinx]

Hi Dhanniel M,


Thank you for patiently responding to the problem I encountered.

I reopened many projects and started path tracing.

I have tried different versions of Unreal Engine, including 4.7, 5.3, and 5.4, but path tracking does not display on the Arc A770 graphics card.

Best regards,

Hi Syinx.

[DhannielM_Intel]

Hi Syinx,

Thank you for your prompt response. I would like to clarify a few details. Are you currently developing a project using Unreal Engine 5, such as a game or an application? If so, I can move this thread to the appropriate forum to ensure you receive the most relevant support for your situation.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[Syinx]

Hi Dhanniel M,

Thank you for answering my questions so positively, it makes me feel especially happy.

I am currently using my free time to develop some indie games, just to follow my dream of creating games. I'm also doing some rendering work, and Lumen's effects are sufficient. Path tracing offers more detail. Thank you again for your support.

Best regards,

Hi Syinx.

[DhannielM_Intel]

Hi Syinx,

No worries about that, I would like to inform you that since this situation is related to the game and rendering work that you currently doing. This to ensure you receive the most specialized assistance, we have a dedicated forum that addresses these specific concerns. Therefore, I will be moving this discussion to our Developing Games on Intel Graphics Forum. This will allow our knowledgeable community and experts to provide you with timely and accurate solutions.

Best regards,

Dhanniel M.

Intel Customer Support Technician

[karen_intel]

Hello @Syinx and thank you for reaching out Intel Indie Game Developer Support!

I'm already downloading both versions 5.1 and 5.4 in a couple systems at the lab with A770 and with Intel Core Ultra + Arc Graphics

I'll debug to see what's going on with the path tracing option. 
Question, could you share your SSU? So I can see your system specs + it is necessary if we need to report this behavior internally.

Also, have you identified if the option was available before? Or if it is not available anymore with the latest drivers? 
If you have a project you can share, just to make sure we're seeing the same options, that would be fantastic

Thanks a lot

Karen