Hello 
Coming back to my wire physics project I noticed that the lines between points won’t render :
After a quick investigation, it appears it comes from GreasedLine.setPoints method.
Here is a minimalist PG to reproduce :
(Comment line 28 and the GreasedLine is back)
@roland, a recent commit must have changed something in the last days/weeks
I’m seeing a growing square in the second link. And lines between balls on the first link. (Babylon Version 7.36.0 using WebGL2).
It looks correct to me. Am I missing something?
Are you ? 
Then it might me hardware or OS related. On first link I have no gray lines, on second link I have blank render without any square…
EDIT : With WebGPU it works, but slow as hell . With WebGL2, no GreasedLine after setPoints call …
WebGPU works for me and is slow for me also.
And yes, WebGL2 and WebGL both work for me, display lines, and are faster. I think GreasedLine support with WebGPU is in progress.
Looks like it might be related to parallel shader compilation https://playground.babylonjs.com/#H1LRZ3#669
What is happening is that the shader is deleted/created everyframe cause setIndices will end up recreating subMeshes which are the one holding the shader.
I will work on it with @Evgeni_Popov tomorrow and probably @Deltakosh on Monday.
Sorry for the inconvenience.
On it!
