58 lines
2.1 KiB
Swift
Executable File
58 lines
2.1 KiB
Swift
Executable File
|
|
import MetalKit
|
|
|
|
public class MetalView: MTKView, NSWindowDelegate {
|
|
|
|
var queue: MTLCommandQueue! = nil
|
|
var cps: MTLComputePipelineState! = nil
|
|
var timer: Float = 0
|
|
var timerBuffer: MTLBuffer!
|
|
|
|
required public init(coder: NSCoder) {
|
|
super.init(coder: coder)
|
|
}
|
|
|
|
override public init(frame frameRect: CGRect, device: MTLDevice?) {
|
|
super.init(frame: frameRect, device: device)
|
|
registerShaders()
|
|
}
|
|
|
|
override public func draw(_ dirtyRect: NSRect) {
|
|
if let drawable = currentDrawable {
|
|
let commandBuffer = queue.makeCommandBuffer()
|
|
let commandEncoder = commandBuffer.makeComputeCommandEncoder()
|
|
commandEncoder.setComputePipelineState(cps)
|
|
commandEncoder.setTexture(drawable.texture, at: 0)
|
|
commandEncoder.setBuffer(timerBuffer, offset: 0, at: 0)
|
|
update()
|
|
let threadGroupCount = MTLSizeMake(8, 8, 1)
|
|
let threadGroups = MTLSizeMake(drawable.texture.width / threadGroupCount.width, drawable.texture.height / threadGroupCount.height, 1)
|
|
commandEncoder.dispatchThreadgroups(threadGroups, threadsPerThreadgroup: threadGroupCount)
|
|
commandEncoder.endEncoding()
|
|
commandBuffer.present(drawable)
|
|
commandBuffer.commit()
|
|
}
|
|
|
|
}
|
|
|
|
func update() {
|
|
timer += 0.01
|
|
let bufferPointer = timerBuffer.contents()
|
|
memcpy(bufferPointer, &timer, MemoryLayout<Float>.size)
|
|
}
|
|
|
|
func registerShaders() {
|
|
queue = device!.makeCommandQueue()
|
|
let path = Bundle.main.path(forResource: "Shaders", ofType: "metal")
|
|
do {
|
|
let input = try String(contentsOfFile: path!, encoding: String.Encoding.utf8)
|
|
let library = try device!.makeLibrary(source: input, options: nil)
|
|
let kernel = library.makeFunction(name: "compute")!
|
|
cps = try device!.makeComputePipelineState(function: kernel)
|
|
} catch let e {
|
|
Swift.print("\(e)")
|
|
}
|
|
timerBuffer = device!.makeBuffer(length: MemoryLayout<Float>.size, options: [])
|
|
}
|
|
}
|