С какого проекта начать новичку, которой освоил базу C++

import Foundation
import MetalKit
 
class Renderer: NSObject, MTKViewDelegate {
    let device: MTLDevice
    let mtkView: MTKView
    let commandQueue: MTLCommandQueue
    var buffer: MTLBuffer!
    var vertexDescriptor: MTLVertexDescriptor!
    var renderPipeline: MTLRenderPipelineState!
        
    init(view: MTKView, device: MTLDevice) {
        mtkView = view
        self.device = device
        commandQueue = device.makeCommandQueue()!
        super.init()
        loadResources()
        buildPipeline()
    }
    
    func loadResources() {
        let vertices: [Float32] = [-0.5, -0.5, 0.0, 0.5, -0.5, 0.0, 0.0, 0.5, 0.0]
        buffer = device.makeBuffer(bytes: vertices, length: vertices.count * MemoryLayout<Float32>.size, options: [])!
        vertexDescriptor = MTLVertexDescriptor()
        vertexDescriptor.attributes[0].format = .float3
        vertexDescriptor.attributes[0].offset = 0
        vertexDescriptor.attributes[0].bufferIndex = 0
        vertexDescriptor.layouts[0].stride = 3 * MemoryLayout<Float32>.size
    }
    
    func buildPipeline() {
        guard let library = device.makeDefaultLibrary() else {
            fatalError("Could not load default library from main bundle")
        }
        let pipelineDescriptor = MTLRenderPipelineDescriptor()
        pipelineDescriptor.vertexFunction = library.makeFunction(name: "vertex_main")
        pipelineDescriptor.fragmentFunction = library.makeFunction(name: "fragment_main")
        pipelineDescriptor.colorAttachments[0].pixelFormat = mtkView.colorPixelFormat
        pipelineDescriptor.vertexDescriptor = vertexDescriptor
        do {
            renderPipeline = try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
        } catch {
            fatalError("Could not create render pipeline state object: \(error)")
        }
    }
    
    func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
    }
    
    func draw(in view: MTKView) {
        let commandBuffer = commandQueue.makeCommandBuffer()!
        if let renderPassDescriptor = view.currentRenderPassDescriptor,
           let drawable = view.currentDrawable,
           let commandEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor) {
            commandEncoder.setRenderPipelineState(renderPipeline)
            commandEncoder.setVertexBuffer(buffer, offset: 0, index: 0)
            commandEncoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 3)
            
            commandEncoder.endEncoding()
            commandBuffer.present(drawable)
            commandBuffer.commit()
        }
    }
}

import Cocoa
import MetalKit
 
class ViewController: NSViewController {
    @IBOutlet var mtkView: MTKView!
    var renderer: Renderer!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let device = MTLCreateSystemDefaultDevice()!
        mtkView.device = device
        mtkView.colorPixelFormat = .bgra8Unorm
        mtkView.clearColor = MTLClearColorMake(0, 1, 0, 1)
        
        renderer = Renderer(view: mtkView, device: device)
        mtkView.delegate = renderer
    }
}