Blit Biffer

Example/Example/Example/ContentView.swift

@@ -90,8 +90,6 @@ struct ContentView: View {
                 MPSUnary{ [self] in MPSImageGaussianBlur(device: $0, sigma: blurRadius)}
                     .source(targetTexture)
                     .toDrawable()
-//                Blit()
-//                    .source(targetTexture)
 
                 //let _ = print("compile")
             }

Sources/MetalBuilder/MetalBuilderRenderer.swift

@@ -56,9 +56,9 @@ public final class MetalBuilderRenderer{
                 addTextures(newTexs: [mpsUnaryComponent.inTexture, mpsUnaryComponent.outTexture])
                 passes.append(MPSUnaryPass(mpsUnaryComponent))
             }
-            if let blitComponent = component as? Blit{
-                addTextures(newTexs: [blitComponent.inTexture, blitComponent.outTexture])
-                passes.append(BlitPass(blitComponent))
+            if let blitTextureComponent = component as? BlitTexture{
+                addTextures(newTexs: [blitTextureComponent.inTexture, blitTextureComponent.outTexture])
+                passes.append(BlitTexturePass(blitTextureComponent))
             }
         }
         //setup passes

Sources/MetalBuilder/MetalPasses/BlitBufferPass.swift

@@ -0,0 +1,43 @@
+import MetalKit
+import SwiftUI
+
+// BlitBuffer pass
+class BlitBufferPass: MetalPass{
+    let component: BlitBuffer
+
+    init(_ component: BlitBuffer){
+        self.component = component
+    }
+    func setup(device: MTLDevice, library: MTLLibrary){
+    }
+    func encode(_ commandBuffer: MTLCommandBuffer,_ drawable: CAMetalDrawable?) {
+
+        guard let inBuffer = component.inBuffer
+        else{
+            print("BlitBuffer: no inBuffer!")
+            return
+        }
+        guard let outBuffer = component.outBuffer
+        else{
+            print("BlitBuffer: no outBuffer!")
+            return
+        }
+        let elementSize = inBuffer.elementSize!
+        let count: Int
+        if let c = component.count{
+            count = c
+        }else{
+            count = inBuffer.count
+        }
+
+        let size = count*elementSize
+        let inOffset = component.sourceOffset*size
+        let outOffset = component.destinationOffset*size
+
+        let blitBufferEncoder = commandBuffer.makeBlitCommandEncoder()
+        blitBufferEncoder?.copy(from: inBuffer.buffer!, sourceOffset: inOffset,
+                                to: outBuffer.buffer!, destinationOffset: outOffset,
+                                size: size)
+        blitBufferEncoder?.endEncoding()
+    }
+}

Sources/MetalBuilder/MetalPasses/BlitPass.swift → Sources/MetalBuilder/MetalPasses/BlitTexturePass.swift

@@ -1,17 +1,16 @@
 import MetalKit
 import SwiftUI
 
-// Blit pass
-class BlitPass: MetalPass{
-    let component: Blit
+// BlitTexture pass
+class BlitTexturePass: MetalPass{
+    let component: BlitTexture
 
-    init(_ component: Blit){
+    init(_ component: BlitTexture){
         self.component = component
     }
     func setup(device: MTLDevice, library: MTLLibrary){
     }
     func encode(_ commandBuffer: MTLCommandBuffer,_ drawable: CAMetalDrawable?) {
-        let blitEncoder = commandBuffer.makeBlitCommandEncoder()
         if let inTexture = component.inTexture?.texture{
             var size: MTLSize
             if let s = component.size?.wrappedValue{
@@ -30,11 +29,12 @@ class BlitPass: MetalPass{
                 }
                 outTexture = t
             }
-            blitEncoder?.copy(from: inTexture,
+            let blitTextureEncoder = commandBuffer.makeBlitCommandEncoder()
+            blitTextureEncoder?.copy(from: inTexture,
                               sourceSlice: 0, sourceLevel: 0, sourceOrigin: MTLOriginMake(0, 0, 0), sourceSize: size,
 
                               to: outTexture, destinationSlice: 0, destinationLevel: 0, destinationOrigin: MTLOriginMake(0, 0, 0))
-            blitEncoder?.endEncoding()
+            blitTextureEncoder?.endEncoding()
         }
     }
 }

Sources/MetalBuilder/PropertyWrappers/MetalBuffer.swift

@@ -19,16 +19,23 @@ enum MetalBuilderBufferError: Error {
 case bufferNotCreated
 }
 
-public final class MTLBufferContainer<T>{
-    public var buffer: MTLBuffer?
-    public var pointer: UnsafeMutablePointer<T>?
+public class BufferContainer{
+    var buffer: MTLBuffer?
     public let count: Int
+    public var elementSize: Int?
 
     init(count: Int) {
         self.count = count
     }
+}
+
+public final class MTLBufferContainer<T>: BufferContainer{
+    //public var buffer: MTLBuffer?
+    public var pointer: UnsafeMutablePointer<T>?
+
     func create(device: MTLDevice) throws{
-        let length = MemoryLayout<T>.stride*count
+        elementSize = MemoryLayout<T>.stride
+        let length = elementSize!*count
         buffer = device.makeBuffer(length: length)
         if let buffer = buffer{
             pointer = buffer.contents().bindMemory(to: T.self, capacity: length)

Sources/MetalBuilder/ResultBuilderComponents/BlitBuffer.swift

@@ -0,0 +1,37 @@
+
+import MetalKit
+import SwiftUI
+
+/// BlitBuffer Component
+///
+/// initializes a blit pass
+public struct BlitBuffer: MetalBuilderComponent{
+    var inBuffer: BufferContainer?
+    var outBuffer: BufferContainer?
+
+    var sourceOffset: Int = 0
+    var destinationOffset: Int = 0
+    var count: Int?
+
+    public init(){
+    }
+}
+
+// chaining dunctions
+public extension BlitBuffer{
+    func source<T>(_ container: MTLBufferContainer<T>)->BlitBuffer{
+        var b = self
+        b.inBuffer = container
+        return b
+    }
+    func destination<T>(_ container: MTLBufferContainer<T>)->BlitBuffer{
+        var b = self
+        b.outBuffer = container
+        return b
+    }
+    func count(count: Int)->BlitBuffer{
+        var b = self
+        b.count = count
+        return b
+    }
+}

Sources/MetalBuilder/ResultBuilderComponents/Blit.swift → Sources/MetalBuilder/ResultBuilderComponents/BlitTexture.swift

@@ -2,32 +2,32 @@
 import MetalKit
 import SwiftUI
 
-/// Blit Component
+/// BlitTexture Component
 ///
 /// initializes a blit pass
 /// if no destination is set tries to copy to drawable
-public struct Blit: MetalBuilderComponent{
-    var outTexture: MTLTextureContainer?
+public struct BlitTexture: MetalBuilderComponent{
     var inTexture: MTLTextureContainer?
+    var outTexture: MTLTextureContainer?
 
     var size: Binding<MTLSize>?
     public init(){
     }
 }
 
 // chaining dunctions
-public extension Blit{
-    func source(_ container: MTLTextureContainer)->Blit{
+public extension BlitTexture{
+    func source(_ container: MTLTextureContainer)->BlitTexture{
         var b = self
         b.inTexture = container
         return b
     }
-    func destination(_ container: MTLTextureContainer)->Blit{
+    func destination(_ container: MTLTextureContainer)->BlitTexture{
         var b = self
         b.outTexture = container
         return b
     }
-    func size(size: Binding<MTLSize>)->Blit{
+    func size(size: Binding<MTLSize>)->BlitTexture{
         var b = self
         b.size = size
         return b