ksOS/Kernel/Source/kernel.swift

@_cdecl("kmain")
public func kernelMain(_ bootInfo: UnsafeMutablePointer<Bootinfo>) {
    let fb = bootInfo.pointee.framebuffer

    let pixels = fb.base!

    let width  = Int(fb.width)
    let height = Int(fb.height)
    let total  = width * height
    let stripe = total / 5

    var i = 0
    while i < total {
        let s = i / stripe
        let color: UInt32
        if s == 0 || s >= 4 { color = 0x5BCEFA }
        else if s == 2      { color = 0xFFFFFF  }
        else                { color = 0xF5A7B8  }
        pixels[i] = color
        i &+= 1
    }
    kprint("Meow prrr meow nyaaa\n")
}