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