GetBufferDataExample

Examples/GetBufferDataExample.cs

@@ -0,0 +1,143 @@
+using MoonWorks;
+using MoonWorks.Graphics;
+using MoonWorks.Input;
+using MoonWorks.Math.Float;
+using System.Runtime.InteropServices;
+
+namespace MoonWorksGraphicsTests;
+
+class GetBufferDataExample : Example
+{
+    public override void Init(Window window, GraphicsDevice graphicsDevice, Inputs inputs)
+    {
+		Window = window;
+		GraphicsDevice = graphicsDevice;
+
+		Window.SetTitle("GetBufferData");
+
+		var vertices = new System.Span<PositionVertex>(
+	[
+		new PositionVertex(new Vector3(0, 0, 0)),
+			new PositionVertex(new Vector3(0, 0, 1)),
+			new PositionVertex(new Vector3(0, 1, 0)),
+			new PositionVertex(new Vector3(0, 1, 1)),
+			new PositionVertex(new Vector3(1, 0, 0)),
+			new PositionVertex(new Vector3(1, 0, 1)),
+			new PositionVertex(new Vector3(1, 1, 0)),
+			new PositionVertex(new Vector3(1, 1, 1)),
+		]);
+
+		var otherVerts = new System.Span<PositionVertex>(
+		[
+			new PositionVertex(new Vector3(1, 2, 3)),
+			new PositionVertex(new Vector3(4, 5, 6)),
+			new PositionVertex(new Vector3(7, 8, 9))
+		]);
+
+		int vertexSize = Marshal.SizeOf<PositionVertex>();
+
+		var resourceUploader = new ResourceUploader(GraphicsDevice);
+		var vertexBuffer = resourceUploader.CreateBuffer(vertices, BufferUsageFlags.Vertex);
+		resourceUploader.Upload();
+		resourceUploader.Dispose();
+
+		var transferBuffer = new TransferBuffer(
+			GraphicsDevice,
+			TransferUsage.Buffer,
+			TransferBufferMapFlags.Read | TransferBufferMapFlags.Write,
+			vertexBuffer.Size
+		);
+
+		// Read back and print out the vertex values
+		var cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+		var copyPass = cmdbuf.BeginCopyPass();
+		copyPass.DownloadFromBuffer(
+			vertexBuffer,
+			transferBuffer,
+			new BufferCopy(0, 0, vertexBuffer.Size)
+		);
+		cmdbuf.EndCopyPass(copyPass);
+		GraphicsDevice.Submit(cmdbuf);
+
+		PositionVertex[] readbackVertices = new PositionVertex[vertices.Length];
+		transferBuffer.GetData<PositionVertex>(readbackVertices);
+		for (int i = 0; i < readbackVertices.Length; i += 1)
+		{
+			Logger.LogInfo(readbackVertices[i].ToString());
+		}
+
+		// Change the first three vertices and upload
+		transferBuffer.SetData(otherVerts, false);
+
+		cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+		copyPass = cmdbuf.BeginCopyPass();
+		copyPass.UploadToBuffer(transferBuffer, vertexBuffer, false);
+		copyPass.DownloadFromBuffer(vertexBuffer, transferBuffer, new BufferCopy(0, 0, vertexBuffer.Size));
+		cmdbuf.EndCopyPass(copyPass);
+		var fence = GraphicsDevice.SubmitAndAcquireFence(cmdbuf);
+		GraphicsDevice.WaitForFence(fence);
+		GraphicsDevice.ReleaseFence(fence);
+
+		// Read the updated buffer
+		transferBuffer.GetData<PositionVertex>(readbackVertices);
+		Logger.LogInfo("=== Change first three vertices ===");
+		for (int i = 0; i < readbackVertices.Length; i += 1)
+		{
+			Logger.LogInfo(readbackVertices[i].ToString());
+		}
+
+		// Change the last two vertices and upload
+		cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+		var lastTwoSpan = otherVerts.Slice(1, 2);
+		transferBuffer.SetData(lastTwoSpan, false);
+		copyPass = cmdbuf.BeginCopyPass();
+		copyPass.UploadToBuffer<PositionVertex>(
+			transferBuffer,
+			vertexBuffer,
+			0,
+			(uint)(vertices.Length - 2),
+			2,
+			false
+		);
+		copyPass.DownloadFromBuffer(vertexBuffer, transferBuffer, new BufferCopy(0, 0, vertexBuffer.Size));
+		cmdbuf.EndCopyPass(copyPass);
+		fence = GraphicsDevice.SubmitAndAcquireFence(cmdbuf);
+		GraphicsDevice.WaitForFence(fence);
+		GraphicsDevice.ReleaseFence(fence);
+
+		// Read the updated buffer
+		transferBuffer.GetData<PositionVertex>(readbackVertices);
+		Logger.LogInfo("=== Change last two vertices ===");
+		for (int i = 0; i < readbackVertices.Length; i += 1)
+		{
+			Logger.LogInfo(readbackVertices[i].ToString());
+		}
+
+		vertexBuffer.Dispose();
+		transferBuffer.Dispose();
+	}
+
+	public override void Update(System.TimeSpan delta) { }
+
+	public override void Draw(double alpha)
+	{
+		CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
+		Texture swapchainTexture = cmdbuf.AcquireSwapchainTexture(Window);
+		if (swapchainTexture != null)
+		{
+			var renderPass = cmdbuf.BeginRenderPass(
+				new ColorAttachmentInfo(
+					swapchainTexture,
+					false,
+					Color.Black
+				)
+			);
+			cmdbuf.EndRenderPass(renderPass);
+		}
+		GraphicsDevice.Submit(cmdbuf);
+	}
+
+    public override void Destroy()
+    {
+    }
+}

Examples/GetBufferDataGame.cs

@@ -1,135 +0,0 @@
-using MoonWorks.Graphics;
-using MoonWorks.Math.Float;
-using System.Runtime.InteropServices;
-
-namespace MoonWorks.Test
-{
-	class GetBufferDataGame : Game
-	{
-		public GetBufferDataGame() : base(TestUtils.GetStandardWindowCreateInfo(), TestUtils.GetStandardFrameLimiterSettings(), TestUtils.PreferredBackends, 60, true)
-		{
-			var vertices = new System.Span<PositionVertex>(
-            [
-                new PositionVertex(new Vector3(0, 0, 0)),
-				new PositionVertex(new Vector3(0, 0, 1)),
-				new PositionVertex(new Vector3(0, 1, 0)),
-				new PositionVertex(new Vector3(0, 1, 1)),
-				new PositionVertex(new Vector3(1, 0, 0)),
-				new PositionVertex(new Vector3(1, 0, 1)),
-				new PositionVertex(new Vector3(1, 1, 0)),
-				new PositionVertex(new Vector3(1, 1, 1)),
-			]);
-
-			var otherVerts = new System.Span<PositionVertex>(
-            [
-                new PositionVertex(new Vector3(1, 2, 3)),
-				new PositionVertex(new Vector3(4, 5, 6)),
-				new PositionVertex(new Vector3(7, 8, 9))
-			]);
-
-			int vertexSize = Marshal.SizeOf<PositionVertex>();
-
-			var resourceUploader = new ResourceUploader(GraphicsDevice);
-
-			var vertexBuffer = resourceUploader.CreateBuffer(vertices, BufferUsageFlags.Vertex);
-
-			// Wait for the vertices to finish copying...
-			resourceUploader.UploadAndWait();
-			resourceUploader.Dispose();
-
-			var transferBuffer = new TransferBuffer(GraphicsDevice, TransferUsage.Buffer, vertexBuffer.Size);
-
-			// Read back and print out the vertex values
-			GraphicsDevice.DownloadFromBuffer(
-				vertexBuffer,
-				transferBuffer,
-				TransferOptions.Unsafe
-			);
-
-			PositionVertex[] readbackVertices = new PositionVertex[vertices.Length];
-			transferBuffer.GetData<PositionVertex>(readbackVertices);
-			for (int i = 0; i < readbackVertices.Length; i += 1)
-			{
-				Logger.LogInfo(readbackVertices[i].ToString());
-			}
-
-			// Change the first three vertices and upload
-			transferBuffer.SetData(otherVerts, TransferOptions.Unsafe);
-
-			var cmdbuf = GraphicsDevice.AcquireCommandBuffer();
-			cmdbuf.BeginCopyPass();
-			cmdbuf.UploadToBuffer(transferBuffer, vertexBuffer, WriteOptions.Unsafe);
-			cmdbuf.EndCopyPass();
-			var fence = GraphicsDevice.SubmitAndAcquireFence(cmdbuf);
-			GraphicsDevice.WaitForFences(fence);
-			GraphicsDevice.ReleaseFence(fence);
-
-			// Download the data
-			GraphicsDevice.DownloadFromBuffer(
-				vertexBuffer,
-				transferBuffer,
-				TransferOptions.Unsafe
-			);
-
-			// Read the updated buffer
-			transferBuffer.GetData<PositionVertex>(readbackVertices);
-			Logger.LogInfo("=== Change first three vertices ===");
-			for (int i = 0; i < readbackVertices.Length; i += 1)
-			{
-				Logger.LogInfo(readbackVertices[i].ToString());
-			}
-
-			// Change the last two vertices and upload
-			cmdbuf = GraphicsDevice.AcquireCommandBuffer();
-			var lastTwoSpan = otherVerts.Slice(1, 2);
-			transferBuffer.SetData(lastTwoSpan, TransferOptions.Unsafe);
-			cmdbuf.BeginCopyPass();
-			cmdbuf.UploadToBuffer<PositionVertex>(
-				transferBuffer,
-				vertexBuffer,
-				0,
-                (uint)(vertices.Length - 2),
-				2,
-				WriteOptions.Unsafe
-			);
-			cmdbuf.EndCopyPass();
-			fence = GraphicsDevice.SubmitAndAcquireFence(cmdbuf);
-			GraphicsDevice.WaitForFences(fence);
-			GraphicsDevice.ReleaseFence(fence);
-
-			GraphicsDevice.DownloadFromBuffer(
-				vertexBuffer,
-				transferBuffer,
-				TransferOptions.Unsafe
-			);
-
-			// Read the updated buffer
-			transferBuffer.GetData<PositionVertex>(readbackVertices);
-			Logger.LogInfo("=== Change last two vertices ===");
-			for (int i = 0; i < readbackVertices.Length; i += 1)
-			{
-				Logger.LogInfo(readbackVertices[i].ToString());
-			}
-		}
-
-		protected override void Update(System.TimeSpan delta) { }
-
-		protected override void Draw(double alpha)
-		{
-			CommandBuffer cmdbuf = GraphicsDevice.AcquireCommandBuffer();
-			Texture? swapchainTexture = cmdbuf.AcquireSwapchainTexture(MainWindow);
-			if (swapchainTexture != null)
-			{
-				cmdbuf.BeginRenderPass(new ColorAttachmentInfo(swapchainTexture, WriteOptions.Cycle, Color.Black));
-				cmdbuf.EndRenderPass();
-			}
-			GraphicsDevice.Submit(cmdbuf);
-		}
-
-		public static void Main(string[] args)
-		{
-			GetBufferDataGame game = new GetBufferDataGame();
-			game.Run();
-		}
-	}
-}

MoonWorksGraphicsTests.csproj

@@ -36,6 +36,7 @@
 		<Compile Include="Examples\CullFaceExample.cs" />
 		<Compile Include="Examples\DepthMSAAExample.cs" />
 		<Compile Include="Examples\DrawIndirectExample.cs" />
+		<Compile Include="Examples\GetBufferDataExample.cs" />
 	</ItemGroup>
 
 	<Import Project=".\CopyMoonlibs.targets" />

Program.cs

@@ -19,7 +19,8 @@ class Program : Game
 		new CubeExample(),
 		new CullFaceExample(),
 		new DepthMSAAExample(),
-		new DrawIndirectExample()
+		new DrawIndirectExample(),
+		new GetBufferDataExample()
 	];
 
 	int ExampleIndex = 0;