search

CesiumGS / cesium-unreal

Bringing the 3D geospatial ecosystem to Unreal Engine
https://cesium.com/platform/cesium-for-unreal/
Apache License 2.0
945 stars 296 forks source link

Rendering artifacts and broken clipping on 13-inch 2019 MacBook Pro #1498

Open kring opened 3 months ago

kring commented 3 months ago

UE 5.2 / Cesium for Unreal doesn't work very well on this machine. I'm inclined to blame the terrible GPU (an "Intel Iris Plus Graphics 655 1536 MB"), but I don't know for sure.

Tilesets with raster overlays have visible triangle edges for no apparent reason:

Screenshot 2024-08-15 at 3 50 30 PM

Also, polygon clipping doesn't work reliably. The box you can see at the top of the screenshot should be excluding Cesium OSM Buildings inside it. Instead, some buildings (presumably the large ones from low-detail tiles) are completely visible, and for the rest the triangle edges are visible again:

Screenshot 2024-08-15 at 3 45 37 PM
kring commented 3 months ago

It also doesn't like something about the custom material in the 10_CesiumOSMWindows_Metadata level:

Screenshot 2024-08-15 at 3 54 46 PM
kring commented 3 months ago

It's not just tilesets with raster overlays that show triangle edges. Here's Google Photorealistic 3D Tiles:

Screenshot 2024-08-15 at 3 58 34 PM
kring commented 2 months ago

The same (or very similar) problem was noted on the community forum on a Windows 11 machine. Also with an Intel integrated GPU. https://community.cesium.com/t/google-photorealistic-3d-tiles-prevent-these-thin-lines/35035