public void Visit(MaterialGeneratorContext context)
{
RoughnessMap.Visit(context);
invertBuffer ??= GraphicsBuffer.New(context.GraphicsDevice, Invert, ResourceFlags.ConstantBuffer, GraphicsHeapType.Upload).DisposeBy(context.GraphicsDevice);
context.ConstantBufferViews.Add(invertBuffer);
}
public Task <Mesh> GetMeshAsync(int meshIndex)
{
GltfLoader.Schema.Mesh mesh = gltf.Meshes[meshIndex];
Span <byte> indexBuffer = Span <byte> .Empty;
GraphicsBuffer <byte>?indexBufferView = null;
bool is32bitIndex = false;
if (mesh.Primitives[0].Indices.HasValue)
{
indexBuffer = GetIndexBuffer(mesh, out int stride);
is32bitIndex = stride == sizeof(int);
indexBufferView = GraphicsBuffer.New(GraphicsDevice, indexBuffer, stride, ResourceFlags.IndexBuffer).DisposeBy(GraphicsDevice);
}
GraphicsBuffer[] vertexBufferViews = GetVertexBufferViews(mesh, indexBuffer, is32bitIndex);
int materialIndex = 0;
if (mesh.Primitives[0].Material.HasValue)
{
materialIndex = mesh.Primitives[0].Material ?? throw new Exception();
}
Node node = gltf.Nodes.First(n => n.Mesh == meshIndex);
float[] matrix = node.Matrix;
Matrix4x4 worldMatrix = Matrix4x4.Transpose(new Matrix4x4(
matrix[0], matrix[1], matrix[2], matrix[3],
matrix[4], matrix[5], matrix[6], matrix[7],
matrix[8], matrix[9], matrix[10], matrix[11],
matrix[12], matrix[13], matrix[14], matrix[15]));
float[] s = node.Scale;
float[] r = node.Rotation;
float[] t = node.Translation;
Vector3 scale = new Vector3(s[0], s[1], s[2]);
Quaternion rotation = new Quaternion(r[0], r[1], r[2], r[3]);
Vector3 translation = new Vector3(t[0], t[1], t[2]);
worldMatrix *= Matrix4x4.CreateScale(scale)
* Matrix4x4.CreateFromQuaternion(rotation)
* Matrix4x4.CreateTranslation(translation);
MeshDraw meshDraw = new MeshDraw
{
IndexBufferView = indexBufferView,
VertexBufferViews = vertexBufferViews
};
return(Task.FromResult(new Mesh(meshDraw)
{
MaterialIndex = materialIndex, WorldMatrix = worldMatrix
}));
}
public void Visit(MaterialGeneratorContext context)
{
if (Texture != null)
{
context.ShaderResourceViews.Add(Texture);
}
colorChannelBuffer ??= GraphicsBuffer.New(context.GraphicsDevice, Channel, ResourceFlags.ConstantBuffer, GraphicsHeapType.Upload).DisposeBy(context.GraphicsDevice);
context.ConstantBufferViews.Add(colorChannelBuffer);
}
private GraphicsBuffer[] GetVertexBufferViews(GltfLoader.Schema.Mesh mesh, Span <byte> indexBuffer = default, bool is32bitIndex = false)
{
GraphicsBuffer[] vertexBufferViews = new GraphicsBuffer[4];
Dictionary <string, int> attributes = mesh.Primitives[0].Attributes;
bool hasPosition = attributes.TryGetValue("POSITION", out int positionIndex);
bool hasNormal = attributes.TryGetValue("NORMAL", out int normalIndex);
bool hasTangent = attributes.TryGetValue("TANGENT", out int tangentIndex);
bool hasTexCoord0 = attributes.TryGetValue("TEXCOORD_0", out int texCoord0Index);
if (hasPosition)
{
Span <byte> positionBuffer = GetVertexBuffer(positionIndex, out int positionStride);
vertexBufferViews[0] = GraphicsBuffer.New(GraphicsDevice, positionBuffer, positionStride, ResourceFlags.VertexBuffer).DisposeBy(GraphicsDevice);
if (hasNormal)
{
Span <byte> normalBuffer = GetVertexBuffer(normalIndex, out int normalStride);
vertexBufferViews[1] = GraphicsBuffer.New(GraphicsDevice, normalBuffer, normalStride, ResourceFlags.VertexBuffer).DisposeBy(GraphicsDevice);
}
if (hasTangent)
{
Span <byte> tangentBuffer = GetVertexBuffer(tangentIndex, out int tangentStride);
vertexBufferViews[2] = GraphicsBuffer.New(GraphicsDevice, tangentBuffer, tangentStride, ResourceFlags.VertexBuffer).DisposeBy(GraphicsDevice);
}
if (hasTexCoord0)
{
Span <byte> texCoord0Buffer = GetVertexBuffer(texCoord0Index, out int texCoord0Stride);
vertexBufferViews[3] = GraphicsBuffer.New(GraphicsDevice, texCoord0Buffer, texCoord0Stride, ResourceFlags.VertexBuffer).DisposeBy(GraphicsDevice);
if (!hasTangent)
{
Span <Vector4> tangentBuffer = VertexHelper.GenerateTangents(positionBuffer, texCoord0Buffer, indexBuffer, is32bitIndex);
vertexBufferViews[2] = GraphicsBuffer.New(GraphicsDevice, tangentBuffer, ResourceFlags.VertexBuffer).DisposeBy(GraphicsDevice);
}
}
}
return(vertexBufferViews);
}
private static async Task Main()
{
// Create graphics device
using GraphicsDevice device = new GraphicsDevice(FeatureLevel.Level11_0);
// Create graphics buffer
int width = 10;
int height = 10;
float[] array = new float[width * height];
for (int i = 0; i < array.Length; i++)
{
array[i] = i;
}
float[] outputArray = new float[width * height];
using GraphicsBuffer <float> sourceBuffer = GraphicsBuffer.New(device, array.AsSpan(), GraphicsBufferFlags.ShaderResource);
using GraphicsBuffer <float> destinationBuffer = GraphicsBuffer.New <float>(device, array.Length * 2, GraphicsBufferFlags.UnorderedAccess);
GraphicsBuffer <float> slicedDestinationBuffer = destinationBuffer.Slice(20, 60);
slicedDestinationBuffer = slicedDestinationBuffer.Slice(10, 50);
DescriptorSet descriptorSet = new DescriptorSet(device, 2);
descriptorSet.AddUnorderedAccessViews(slicedDestinationBuffer);
descriptorSet.AddShaderResourceViews(sourceBuffer);
// Generate computer shader
bool generateWithDelegate = true;
ShaderGenerator shaderGenerator = generateWithDelegate
? CreateShaderGeneratorWithDelegate(sourceBuffer, destinationBuffer)
: CreateShaderGeneratorWithClass();
ShaderGeneratorResult result = shaderGenerator.GenerateShader();
// Compile shader
byte[] shaderBytecode = ShaderCompiler.Compile(DxcShaderStage.ComputeShader, result.ShaderSource, result.EntryPoints["compute"]);
DescriptorRange1[] descriptorRanges = new DescriptorRange1[]
{
new DescriptorRange1(DescriptorRangeType.UnorderedAccessView, 1, 0),
new DescriptorRange1(DescriptorRangeType.ShaderResourceView, 1, 0)
};
RootParameter1 rootParameter = new RootParameter1(new RootDescriptorTable1(descriptorRanges), ShaderVisibility.All);
var rootSignatureDescription = new VersionedRootSignatureDescription(new RootSignatureDescription1(RootSignatureFlags.None, new[] { rootParameter }));
var rootSignature = device.CreateRootSignature(rootSignatureDescription);
PipelineState pipelineState = new PipelineState(device, rootSignature, shaderBytecode);
// Execute computer shader
using (CommandList commandList = new CommandList(device, CommandListType.Compute))
{
commandList.SetPipelineState(pipelineState);
commandList.SetComputeRootDescriptorTable(0, descriptorSet);
commandList.Dispatch(1, 1, 1);
await commandList.FlushAsync();
}
// Print matrix
Console.WriteLine("Before:");
PrintMatrix(array, width, height);
destinationBuffer.GetData(outputArray.AsSpan());
Console.WriteLine();
Console.WriteLine("After:");
PrintMatrix(outputArray, width, height);
}
public void Visit(MaterialGeneratorContext context)
{
valueBuffer ??= GraphicsBuffer.New(context.GraphicsDevice, Value, GraphicsBufferFlags.ConstantBuffer, GraphicsHeapType.Upload).DisposeBy(context.GraphicsDevice);
context.ConstantBufferViews.Add(valueBuffer);
}
public void Visit(MaterialGeneratorContext context)
{
isBlackAndWhiteBuffer ??= GraphicsBuffer.New(context.GraphicsDevice, IsBlackAndWhite, ResourceFlags.ConstantBuffer, GraphicsHeapType.Upload).DisposeBy(context.GraphicsDevice);
context.ConstantBufferViews.Add(isBlackAndWhiteBuffer);
}
