GetBufferDataExample
parent
83bdf69e64
commit
e85220318f
|
|
@ -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()
|
||||
{
|
||||
}
|
||||
}
|
||||
|
|
@ -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();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -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" />
|
||||
|
|
|
|||
|
|
@ -19,7 +19,8 @@ class Program : Game
|
|||
new CubeExample(),
|
||||
new CullFaceExample(),
|
||||
new DepthMSAAExample(),
|
||||
new DrawIndirectExample()
|
||||
new DrawIndirectExample(),
|
||||
new GetBufferDataExample()
|
||||
];
|
||||
|
||||
int ExampleIndex = 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue