From 084190b5aed27e167574e0bfa8619d304f64bb39 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Thu, 14 Dec 2023 20:06:19 +0000
Subject: Uodates

---
 metal_test.xcodeproj/project.pbxproj |  4 +++
 metal_test/ContentView.swift         | 20 +----------
 metal_view.swift                     | 65 ++++++++++++++++++++++++++++++++----
 3 files changed, 63 insertions(+), 26 deletions(-)

diff --git a/metal_test.xcodeproj/project.pbxproj b/metal_test.xcodeproj/project.pbxproj
index 42b5659..625e4f5 100644
--- a/metal_test.xcodeproj/project.pbxproj
+++ b/metal_test.xcodeproj/project.pbxproj
@@ -13,6 +13,7 @@
 		3D63BC912B11E80D007AE59F /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3D63BC902B11E80D007AE59F /* ContentView.swift */; };
 		3D63BC932B11E80E007AE59F /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 3D63BC922B11E80E007AE59F /* Assets.xcassets */; };
 		3D63BC962B11E80E007AE59F /* Preview Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 3D63BC952B11E80E007AE59F /* Preview Assets.xcassets */; };
+		3D9ED6942B1BC48100BE74DB /* metal_view.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3D9ED6932B1BC48100BE74DB /* metal_view.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -24,6 +25,7 @@
 		3D63BC922B11E80E007AE59F /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		3D63BC952B11E80E007AE59F /* Preview Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = "Preview Assets.xcassets"; sourceTree = "<group>"; };
 		3D63BC972B11E80E007AE59F /* metal_test.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = metal_test.entitlements; sourceTree = "<group>"; };
+		3D9ED6932B1BC48100BE74DB /* metal_view.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = metal_view.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -40,6 +42,7 @@
 		3D63BC822B11E80D007AE59F = {
 			isa = PBXGroup;
 			children = (
+				3D9ED6932B1BC48100BE74DB /* metal_view.swift */,
 				3D63BC8D2B11E80D007AE59F /* metal_test */,
 				3D63BC8C2B11E80D007AE59F /* Products */,
 			);
@@ -149,6 +152,7 @@
 				3D4E32F82B12959E00968289 /* MapView.swift in Sources */,
 				3D63BC8F2B11E80D007AE59F /* metal_testApp.swift in Sources */,
 				3D4E32F62B1290C900968289 /* CircleImage.swift in Sources */,
+				3D9ED6942B1BC48100BE74DB /* metal_view.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/metal_test/ContentView.swift b/metal_test/ContentView.swift
index 481242f..1aa8e64 100644
--- a/metal_test/ContentView.swift
+++ b/metal_test/ContentView.swift
@@ -10,25 +10,7 @@ import Metal
 
 struct ContentView: View {
     var body: some View {
-        VStack {
-            MapView()
-                .frame(height:300)
-            CircleImage()
-                .offset(y:-130)
-                .padding(.bottom,-130)
-            VStack {
-                Text("Turtle Rock")
-                    .font(.title)
-                HStack {
-                    Text("Joshua Tree National Park")
-                        .font(.subheadline)
-                    Spacer()
-                    Text("California")
-                        .font(.subheadline)
-                }
-            }
-        }
-        .padding()
+        MetalView()
     }
 }
 
diff --git a/metal_view.swift b/metal_view.swift
index 7cc8d34..31c2ea8 100644
--- a/metal_view.swift
+++ b/metal_view.swift
@@ -1,8 +1,59 @@
-//
-//  metal_view.swift
-//  metal_test
-//
-//  Created by Ian C on 02/12/2023.
-//
+import SwiftUI
+import MetalKit
 
-import Foundation
+struct MetalView: NSViewRepresentable {
+    func makeCoordinator() -> Coordinator {
+        Coordinator(self)
+    }
+    func makeNSView(context: NSViewRepresentableContext<MetalView>) -> MTKView {
+        let mtkView = MTKView()
+        mtkView.delegate = context.coordinator
+        mtkView.preferredFramesPerSecond = 60
+        mtkView.enableSetNeedsDisplay = true
+        if let metalDevice = MTLCreateSystemDefaultDevice() {
+            mtkView.device = metalDevice
+        }
+        mtkView.framebufferOnly = false
+        mtkView.clearColor = MTLClearColor(red: 0, green: 0, blue: 0, alpha: 0)
+        mtkView.drawableSize = mtkView.frame.size
+        mtkView.enableSetNeedsDisplay = true
+        mtkView.isPaused = false
+        return mtkView
+    }
+    
+    func updateNSView(_ nsView: MTKView, context: NSViewRepresentableContext<MetalView>) {
+    }
+    
+    class Coordinator : NSObject, MTKViewDelegate {
+        var parent: MetalView
+        var metalDevice: MTLDevice!
+        var metalCommandQueue: MTLCommandQueue!
+        
+        init(_ parent: MetalView) {
+            self.parent = parent
+            if let metalDevice = MTLCreateSystemDefaultDevice() {
+                self.metalDevice = metalDevice
+            }
+            self.metalCommandQueue = metalDevice.makeCommandQueue()!
+            super.init()
+        }
+        
+        func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
+        }
+        
+        func draw(in view: MTKView) {
+            guard let drawable = view.currentDrawable else {
+                return
+            }
+            let commandBuffer = metalCommandQueue.makeCommandBuffer()
+            let rpd = view.currentRenderPassDescriptor
+            rpd?.colorAttachments[0].clearColor = MTLClearColorMake(0, 0, 0, 1)
+            rpd?.colorAttachments[0].loadAction = .clear
+            rpd?.colorAttachments[0].storeAction = .store
+            let re = commandBuffer?.makeRenderCommandEncoder(descriptor: rpd!)
+            re?.endEncoding()
+            commandBuffer?.present(drawable)
+            commandBuffer?.commit()
+        }
+    }
+}
-- 
cgit v1.2.3