initial work to split into dart_filament and flutter_filament

2024-04-30 12:07:26 +08:00
parent b81f34cd29
commit 8f9e309c34
1624 changed files with 165260 additions and 6619 deletions
--- a/flutter_filament/macos/Classes/DartFilamentTexture.swift
+++ b/flutter_filament/macos/Classes/DartFilamentTexture.swift
@@ -0,0 +1,101 @@
+import Foundation
+import Foundation
+import GLKit
+
+@objc public class DartFilamentTexture : NSObject {
+
+    var pixelBuffer: CVPixelBuffer?
+    
+    var pixelBufferAttrs = [
+        kCVPixelBufferPixelFormatTypeKey: NSNumber(value: kCVPixelFormatType_32ABGR ),
+    //    kCVPixelBufferOpenGLCompatibilityKey: kCFBooleanTrue!,
+        kCVPixelBufferIOSurfacePropertiesKey: [:] as CFDictionary
+    ] as CFDictionary
+
+    @objc public var cvMetalTextureCache:CVMetalTextureCache?
+    @objc public var cvMetalTexture:CVMetalTexture?
+    @objc public var metalTexture:MTLTexture?
+    @objc public var metalDevice:MTLDevice?
+    @objc public var metalTextureAddress:Int = -1
+
+    @objc override public init() {
+        print("VAnilla init")
+    }
+
+    @objc public init(width:Int64, height:Int64) { 
+        self.metalDevice = MTLCreateSystemDefaultDevice()!
+
+        // create pixel buffer
+        if(CVPixelBufferCreate(kCFAllocatorDefault, Int(width), Int(height),
+                               kCVPixelFormatType_32BGRA, pixelBufferAttrs, &pixelBuffer) != kCVReturnSuccess) {
+            print("Error allocating pixel buffer")
+            metalTextureAddress = -1;
+            return
+        }
+           
+        var cvret = CVMetalTextureCacheCreate(
+            kCFAllocatorDefault,
+            nil,
+            metalDevice!,
+            nil,
+            &cvMetalTextureCache);
+        if(cvret != 0) { 
+            metalTextureAddress = -1
+            return
+        }
+        cvret = CVMetalTextureCacheCreateTextureFromImage(
+                        kCFAllocatorDefault,
+                        cvMetalTextureCache!,
+                        pixelBuffer!, nil,
+                        MTLPixelFormat.bgra8Unorm,
+                        Int(width), Int(height),
+                        0,
+                        &cvMetalTexture)
+        if(cvret != 0) { 
+            metalTextureAddress = -1
+            return
+        }
+        metalTexture = CVMetalTextureGetTexture(cvMetalTexture!)
+        let metalTexturePtr = Unmanaged.passUnretained(metalTexture!).toOpaque()
+        metalTextureAddress = Int(bitPattern:metalTexturePtr)
+        
+        print("Created metal texture @ \(metalTextureAddress)")
+        
+        CVPixelBufferLockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
+               let bufferWidth = Int(CVPixelBufferGetWidth(pixelBuffer!))
+               let bufferHeight = Int(CVPixelBufferGetHeight(pixelBuffer!))
+               let bytesPerRow = CVPixelBufferGetBytesPerRow(pixelBuffer!)
+
+               guard let baseAddress = CVPixelBufferGetBaseAddress(pixelBuffer!) else {
+                       return
+               }
+
+               for row in 0..<bufferHeight {
+                   var pixel = baseAddress + row * bytesPerRow
+                   for col in 0..<bufferWidth {
+                       let blue = pixel
+                       blue.storeBytes(of: 255, as: UInt8.self)
+
+                       let red = pixel + 1
+                       red.storeBytes(of: 0, as: UInt8.self)
+
+                       let green = pixel + 2
+                       green.storeBytes(of: 0, as: UInt8.self)
+                    
+                       let alpha = pixel + 3
+                       alpha.storeBytes(of: 255, as: UInt8.self)
+                       
+                       pixel += 4;
+                   }
+               }
+
+               CVPixelBufferUnlockBaseAddress(pixelBuffer!, CVPixelBufferLockFlags(rawValue: 0))
+
+    }
+
+    @objc public func destroyTexture()  {
+        metalTexture = nil
+    }
+
+
+}