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Any reason for writing 3-1 instead of 2? What happens if cascadeIndex is greater than 2? If you ever find out why it behaves like that, I'm curious :D

It's just something I forgot to replace when I wrote an example, even if I replace 3-1 by 2 it does the same. If cascadeIndex is > 2, the color is pink but it never happened.

Since your engine uses Vulkan I assume your shader gets compiled to Spir-V?

The whole code basically just takes the world position and multiplies it with the view matrix to get the view position, calculates the cascade index, and, if the cascade index is 0, it's red, if it's 1, it's green and if it's 2, it's blue. The unroll version is the correct one.

Just tested on Linux... it works normally. So it's definitely something related to NVIDIA Windows drivers...

Someone on the Vulkan Discord suggested to reverse the loop... And it worked!