I have a problem where strange shadows are appearing behind the glass, in the shadow box. I’ve already checked the glass mesh and it’s not coplanar with the shadow box, I’ve tried adding thickness, removing thickness, deleting the back face, remodeling it in several different ways in 3dsmax. I’ve already smoothed the mesh, etc., but I can’t solve it. Changing the glass material also doesn’t solve the problem, any material I put there remains the same. When I delete the glass mesh, the shadow disappears.
I apologise for the inconvenience this issue has caused. Would it be possible for you to send us the D5 and 3ds Max files? We may need to assess this issue in order to pinpoint the cause and perhaps find out if this is a bug. You may send it to support@d5techs.com and have it titled “Clov-Forum Weird Shadows from Glass”
Thanks for resending your files, I have downloaded it and there were no errors compared to last time. I will be testing it and will update you regarding this issue.
I just tested your file and the unwanted shadows are also visible on my end whenever I click on the “Clips” that you have mentioned. These shadows are not visible in my preview window and “Scenes”, is it also the same on your end? Nevertheless, I have reported this issue further to my team and will be working on how we can fix this immediately. Thank you.
This shadows appears when the sun is facing directly the glass, like on those clips . it happens on static scenes and video as well. Ive tried to change materials, remodeled it with and without thickness, modeled with subdivided mesh but none of those methods solved the problem untill now.
i uploaded the final video if you are interested to see where it happens, and if you guys wanna give some opinions, i will be happy
Thanks for your confirmation. We have also replicated the issue on our end using another device and have submitted it further to our team for an in depth inspection and assessment. I will update you on our progress as soon as possible.
I apologize for the delay, since most of our team had a national holiday. Basing on our test, it seems to be caused by the interlayers behind this glass. The reflection is on the flat surface behind the glass. And there are also spaces between the interlayers that would create shadows. When the sunlight comes through, the glass is transparent and you can see the shadows behind it.
I see that you are still experiencing this particular issue. May I know if this is the same file that you have reported and we have tested before? It seems to have the same composition.
We are genuinely curious as to how you have generated this particular surface that was causing the issue. We want to recreate it using a simple model using the same process. Can you send us a video recording of the process? You may send it to me privately.
Unfortunately, for glass material it does not have an option that excludes the surface from Render Computation (Ray Tracing, Path Tracing ,etc.)
The glass mesh came from a revit file, exported as fbx… ive tried to model it on 3dsmax as a simples box with 1cm width, but with the same bad results. Iv tried to model it as a single face with no width too , but with the same results. Ive got those shadows on my last 7 projects, all of them have the glass facade and shadow box. when i delete the glass, those shadows do not appear on the shadow box, which indicate that the glass is the problem. Ive tried with path tracing on , but with the same results.
Alright, I understand. This is exactly the same issue as before, right? It only appears when light is being directed to the glass surface, and using HDRI will remove it?
We still have your previous file, but I think it’s also best to send this particular file that is experiencing this issue. You may send it to support@d5techs.com and have it titled ‘Clov-Forum Weird Shadows from Glass on Back Mesh’. It’s best to include the 3dsMax File just like before.
We will be testing this issue again, and hopefully, we can pinpoint the reason why this is happening.
We were able to test the first file you sent to us since the unnecessary shadows were very prominent in that specific file compared to the latest file that you have forwarded.
It seems that the Custom Material causes this behind the glass, and changing it to Transparent from Custom Material eliminates the issue. I will be sending you a video recording of it via Direct Message, Please check your inbox.
