I just downloaded the WIP. Looks really nice so far, but there is a big performance hit with point clouds with Direct3D. OpenGL still works good. EDIT: I have an rtx 4070 with latest nVidia drivers.

Hi Dan - [image] Dan_Iliescu: […] there is a big performance hit with point clouds with Direct3D. I put 20-some points in a new scene and turned those into a point cloud. I’m switching between Direct3D and OpenGL but am not noticing any difference. Is what you are describing file-specific …

[image] Wim Dekeyser: 20-some points I would not expect performance issues with so few points. Make it 20-million points instead?

It looks like the OpenGL mode uses decimation depending on zoom level and point cloud size. Direct3D does not do that (yet). I have an RTX 4070 as well, and the difference is quite noticable (use _TurnTable to see it) for point clouds that are 10M+ points.

Hello Wim, thank you for the speedy reply. My post was too vague, so I want to explain the process I use almost on a daily basis. 1. I receive scanned data of entire buildings captured with terrestrial laser scanners (TrimbleX9, Leica RTC360, etc.) 2. I process these clouds with CloudCompare, sub…

[image] Dan_Iliescu: Point cloud example: Transfer - Dropbox Thanks, Dan! → RH-90644 Display: Direct3D: Point Cloud Performance Issue -wim

OpenGL vs DirectX performance with point clouds

Serengeti (Rhino WIP)

dan (Dan) December 23, 2025, 10:24pm 7

RH-90644 is fixed in the latest Rhino WIP. Please give it a try.

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OpenGL vs DirectX performance with point clouds

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