Shader not filling in all triangles only on some machines

Hey has anyone seen this before?

I’ve got a custom sky shader that’s doing a lot of heavy ray tracing, but it works well on most machines (even my phone), but my colleague sees this in chrome on macbook pro.

Any ideas?


Haven’t seen that specific failure pattern but, some incompatibilities and driver differences exist.
Also, macbook pro isn’t super specific since they’ve made "macbook pro"s spanning multiple hardware iterations.
Would have to have a link to it running to get a sampling of who sees this issue.

Thanks @manthrax
The type of macbook is 2020 intel i5 with Intel Iris Plus GPU.
here’s a link if it helps: Eclipse Explorer |

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I don’t have MacBook, but the sky is somewhat squarely patched. Is this supposed to be this way?

hah… oh boy. No it’s not. What device are you looking at it with…?

Windows 10 with Intel(R) UHD Graphics 630 – the same pattern is shown in Chrome and Firefox, so it is not browser-dependent.

When I switch to NVIDIA GeForce GTX 1660 Ti the sky is OK, no square patches.

That’s strange. I’m new to shader coding, so if anyone has ideas as to what causes this it would be very helpful!