“Hello. I am using Unreal 5.4.4 + Cesium ion + Google Photorealistic 3D Tiles. The building display is amazing, but I am troubled by thin diagonal lines appearing on the buildings during rendering. Is it possible to prevent these thin lines from being drawn? (They are particularly noticeable in the area enclosed by the red frame in the attached image.)”
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Hi @mm002, welcome to the community!
Are you perhaps using an Intel MacBook Pro? I’ve seen similar artifacts on such a device:
Dear Kevin,
Thank you for your response. Indeed, it appears to be the same issue as issue #1498 that you mentioned. I am using a Windows 11 note PC (Intel Iris Xe). I will check if the same issue occurs with other GPUs as well. I appreciate your advice.
Unfortunately I don’t have any advice. As near as I can tell, it’s a bug in the GPU driver and/or Unreal Engine itself. I can’t completely exclude the possibility that it’s triggered by something we’re doing, but I don’t know what that might be. I’m curious what you find when you try the other GPU that you mentioned. For what it’s worth, my main development machine is Windows 11 with an Intel Arc A750 GPU, and the problem definitely doesn’t occur there, so the problem doesn’t extend to Intel GPUs in general, at least.
By the way, it’s always worthwhile in these situations to make sure you’re running the very latest version of the driver for your GPU, if you haven’t already.
Thank you for your reply. I have confirmed that the same issue occurs even with the latest driver installed on ‘Intel Iris Xe.’ However, there has been some progress: I have confirmed that the issue does not occur on laptops equipped with ‘Intel HD 520, UHD630, or AMD Radeon R7.’ I will continue checking to see if the problem occurs with more recent GPUs on desktop PC.
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