Kage's `min` and `max` should take arbitrary number of arguments to align with Go 1.21

[hajimehoshi]

Operating System

• [ ] Windows
• [ ] macOS
• [ ] Linux
• [ ] FreeBSD
• [ ] OpenBSD
• [ ] Android
• [ ] iOS
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• [ ] Web Browsers

What feature would you like to be added?

Go 1.21 introduces min and max: https://tip.golang.org/ref/spec#Min_and_max

On the other hand, Kage already has min and max for scalar and vector values: https://ebitengine.org/en/documents/shader.html#Built-in_functions_(mathematics)

The point is

• min and max should take one or more arguments, not only two.
• (This is nice to have but) min and max should behave in the same way as Go's in terms of float numbers (NaN and -Inf).
• min and max should return a constant-time value whenever possible. This means that this can be used as a length of an array for example.

Why is this needed?

n/a

[qchencd]

some typo Go 1.21 introduces min and max, not 1.12

[hajimehoshi]

Updated, thanks!

[hajimehoshi]

In GLSL, this is technically allowed:

min(vec2(0), 1.0)