what is the clamp in shader.py in gpu branch

[luoww1992]

what is the func:clamp in shader.py ?
how to import it?
i can't find it

[yoonsikp]

Unfortunately the GPU branch is quite buggy. It's actually an issue with pygpu. I've tried updating it a few months ago to the latest version, but I still ran into crashes. This is the issue I created:

pygfx/wgpu-py#129

I think pyshader is responsible for replacing the clamp with its own implementation. You can find the function definition here:

https://github.com/pygfx/pyshader/blob/master/pyshader/stdlib.py