sonya
f3819a5450
c structures are now exposed to swift using a bridging header. it is possible to access bootinfo using the structure (as oppossed to doing bytesfifts blind) tested on aarch64 apple. please test on other systems
21 lines
565 B
Swift
21 lines
565 B
Swift
@_cdecl("kmain")
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public func kernelMain(_ bootInfo: UnsafeMutablePointer<Bootinfo>) {
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let fb = bootInfo.pointee.framebuffer
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let pixels = fb.base!
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let width = Int(fb.width)
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let height = Int(fb.height)
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let total = width * height
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let stripe = total / 5
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var i = 0
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while i < total {
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let s = i / stripe
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let color: UInt32
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if s == 0 || s >= 4 { color = 0x5BCEFA }
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else if s == 2 { color = 0xFFFFFF }
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else { color = 0xF5A7B8 }
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pixels[i] = color
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i &+= 1
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}
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}
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