// Load the sample assets.
private void LoadAssets()
{
Guid iid;
ID3DBlob *signature = null;
ID3DBlob *error = null;
ID3DBlob *vertexShader = null;
ID3DBlob *pixelShader = null;
try
{
// Create a root signature consisting of a descriptor table with a single CBV.
{
var featureData = new D3D12_FEATURE_DATA_ROOT_SIGNATURE {
// This is the highest version the sample supports. If CheckFeatureSupport succeeds, the HighestVersion returned will not be greater than this.
HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1
};
if (FAILED(_device->CheckFeatureSupport(D3D12_FEATURE_ROOT_SIGNATURE, &featureData, (uint)sizeof(D3D12_FEATURE_DATA_ROOT_SIGNATURE))))
{
featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_0;
}
const int RangesCount = 1;
var ranges = stackalloc D3D12_DESCRIPTOR_RANGE1[RangesCount];
const int RootParametersCount = 1;
var rootParameters = stackalloc D3D12_ROOT_PARAMETER1[RootParametersCount];
ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC);
rootParameters[0].InitAsDescriptorTable(RangesCount, ranges, D3D12_SHADER_VISIBILITY_VERTEX);
// Allow input layout and deny unnecessary access to certain pipeline stages.
var rootSignatureFlags =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS;
var rootSignatureDesc = new D3D12_VERSIONED_ROOT_SIGNATURE_DESC();
rootSignatureDesc.Init_1_1(RootParametersCount, rootParameters, 0, null, rootSignatureFlags);
ThrowIfFailed(nameof(D3D12SerializeRootSignature), D3D12SerializeVersionedRootSignature(&rootSignatureDesc, featureData.HighestVersion, &signature, &error));
fixed(ID3D12RootSignature **rootSignature = &_rootSignature)
{
iid = IID_ID3D12RootSignature;
ThrowIfFailed(nameof(ID3D12Device.CreateRootSignature), _device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), &iid, (void **)rootSignature));
}
}
// Create the pipeline state, which includes compiling and loading shaders.
{
var compileFlags = 0u;
#if DEBUG
// Enable better shader debugging with the graphics debugging tools.
compileFlags |= D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION;
#endif
fixed(char *fileName = GetAssetFullPath(@"D3D12\Assets\Shaders\HelloConstBuffer.hlsl"))
{
var entryPoint = 0x00006E69614D5356; // VSMain
var target = 0x0000305F355F7376; // vs_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &vertexShader, ppErrorMsgs: null));
entryPoint = 0x00006E69614D5350; // PSMain
target = 0x0000305F355F7370; // ps_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &pixelShader, ppErrorMsgs: null));
}
// Define the vertex input layout.
const int InputElementDescsCount = 2;
var semanticName0 = stackalloc ulong[2] {
0x4E4F495449534F50, // POSITION
0x0000000000000000,
};
var semanticName1 = stackalloc ulong[1] {
0x000000524F4C4F43, // COLOR
};
var inputElementDescs = stackalloc D3D12_INPUT_ELEMENT_DESC[InputElementDescsCount] {
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName0,
Format = DXGI_FORMAT_R32G32B32_FLOAT,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName1,
Format = DXGI_FORMAT_R32G32B32A32_FLOAT,
AlignedByteOffset = 12,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
};
// Describe and create the graphics pipeline state object (PSO).
var psoDesc = new D3D12_GRAPHICS_PIPELINE_STATE_DESC {
InputLayout = new D3D12_INPUT_LAYOUT_DESC {
pInputElementDescs = inputElementDescs,
NumElements = InputElementDescsCount,
},
pRootSignature = _rootSignature,
VS = new D3D12_SHADER_BYTECODE(vertexShader),
PS = new D3D12_SHADER_BYTECODE(pixelShader),
RasterizerState = D3D12_RASTERIZER_DESC.DEFAULT,
BlendState = D3D12_BLEND_DESC.DEFAULT,
DepthStencilState = D3D12_DEPTH_STENCIL_DESC.DEFAULT,
SampleMask = uint.MaxValue,
PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE,
NumRenderTargets = 1,
SampleDesc = new DXGI_SAMPLE_DESC(count: 1, quality: 0),
};
psoDesc.DepthStencilState.DepthEnable = FALSE;
psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
fixed(ID3D12PipelineState **pipelineState = &_pipelineState)
{
iid = IID_ID3D12PipelineState;
ThrowIfFailed(nameof(ID3D12Device.CreateGraphicsPipelineState), _device->CreateGraphicsPipelineState(&psoDesc, &iid, (void **)pipelineState));
}
}
// Create the command list.
fixed(ID3D12GraphicsCommandList **commandList = &_commandList)
{
iid = IID_ID3D12GraphicsCommandList;
ThrowIfFailed(nameof(ID3D12Device.CreateCommandList), _device->CreateCommandList(nodeMask: 0, D3D12_COMMAND_LIST_TYPE_DIRECT, _commandAllocator, _pipelineState, &iid, (void **)commandList));
}
// Command lists are created in the recording state, but there is nothing
// to record yet. The main loop expects it to be closed, so close it now.
ThrowIfFailed(nameof(ID3D12GraphicsCommandList.Close), _commandList->Close());
// Create the vertex buffer.
{
// Define the geometry for a triangle.
const int TriangleVerticesCount = 3;
var triangleVertices = stackalloc Vertex[TriangleVerticesCount] {
new Vertex {
Position = new Vector3(0.0f, 0.25f * AspectRatio, 0.0f),
Color = new Vector4(1.0f, 0.0f, 0.0f, 1.0f)
},
new Vertex {
Position = new Vector3(0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 1.0f, 0.0f, 1.0f)
},
new Vertex {
Position = new Vector3(-0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 0.0f, 1.0f, 1.0f)
},
};
var vertexBufferSize = (uint)sizeof(Vertex) * TriangleVerticesCount;
// Note: using upload heaps to transfer static data like vert buffers is not
// recommended. Every time the GPU needs it, the upload heap will be marshalled
// over. Please read up on Default Heap usage. An upload heap is used here for
// code simplicity and because there are very few verts to actually transfer.
fixed(ID3D12Resource **vertexBuffer = &_vertexBuffer)
{
var heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
var bufferDesc = D3D12_RESOURCE_DESC.Buffer(vertexBufferSize);
iid = IID_ID3D12Resource;
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
pOptimizedClearValue: null,
&iid,
(void **)vertexBuffer
));
}
// Copy the triangle data to the vertex buffer.
var readRange = new D3D12_RANGE();
byte *pVertexDataBegin;
ThrowIfFailed(nameof(ID3D12Resource.Map), _vertexBuffer->Map(Subresource: 0, &readRange, (void **)&pVertexDataBegin));
Unsafe.CopyBlock(pVertexDataBegin, triangleVertices, vertexBufferSize);
_vertexBuffer->Unmap(0, null);
// Initialize the vertex buffer view.
_vertexBufferView.BufferLocation = _vertexBuffer->GetGPUVirtualAddress();
_vertexBufferView.StrideInBytes = (uint)sizeof(Vertex);
_vertexBufferView.SizeInBytes = vertexBufferSize;
}
// Create the constant buffer.
{
fixed(ID3D12Resource **pConstantBuffer = &_constantBuffer)
{
var heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
var bufferDesc = D3D12_RESOURCE_DESC.Buffer(1024 * 64);
iid = IID_ID3D12Resource;
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
pOptimizedClearValue: null,
&iid,
(void **)pConstantBuffer));
}
// Describe and create a constant buffer view.
var cbvDesc = new D3D12_CONSTANT_BUFFER_VIEW_DESC {
BufferLocation = _constantBuffer->GetGPUVirtualAddress(),
SizeInBytes = (uint)((sizeof(SceneConstantBuffer) + 255) & ~255) // CB size is required to be 256-byte aligned.
};
_device->CreateConstantBufferView(&cbvDesc, _cbvHeap->GetCPUDescriptorHandleForHeapStart());
// Map and initialize the constant buffer. We don't unmap this until the
// app closes. Keeping things mapped for the lifetime of the resource is okay.
var readRange = new D3D12_RANGE(); // We do not intend to read from this resource on the CPU.
fixed(byte **ppCbvDataBegin = &_pCbvDataBegin)
{
ThrowIfFailed(nameof(ID3D12Resource.Map), _constantBuffer->Map(Subresource: 0, &readRange, (void **)ppCbvDataBegin));
Unsafe.CopyBlock(ref _pCbvDataBegin[0], ref Unsafe.As <SceneConstantBuffer, byte>(ref _constantBufferData), (uint)sizeof(SceneConstantBuffer));
}
// Create synchronization objects and wait until assets have been uploaded to the GPU.
{
fixed(ID3D12Fence **fence = &_fence)
{
iid = IID_ID3D12Fence;
ThrowIfFailed(nameof(ID3D12Device.CreateFence), _device->CreateFence(0, D3D12_FENCE_FLAG_NONE, &iid, (void **)fence));
_fenceValue = 1;
}
// Create an event handle to use for frame synchronization.
_fenceEvent = CreateEventW(lpEventAttributes: null, bManualReset: FALSE, bInitialState: FALSE, lpName: null);
if (_fenceEvent == null)
{
var hr = Marshal.GetHRForLastWin32Error();
Marshal.ThrowExceptionForHR(hr);
}
// Wait for the command list to execute; we are reusing the same command
// list in our main loop but for now, we just want to wait for setup to
// complete before continuing.
WaitForPreviousFrame();
}
}
}
finally
{
if (signature != null)
{
signature->Release();
}
if (error != null)
{
error->Release();
}
if (vertexShader != null)
{
vertexShader->Release();
}
if (pixelShader != null)
{
pixelShader->Release();
}
}
}
// Load the sample assets.
private void LoadAssets()
{
Guid iid;
ID3DBlob *signature = null;
ID3DBlob *error = null;
ID3DBlob *vertexShader = null;
ID3DBlob *pixelShader = null;
try
{
// Create an empty root signature.
{
var rootSignatureDesc = new D3D12_ROOT_SIGNATURE_DESC {
Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT
};
ThrowIfFailed(nameof(D3D12SerializeRootSignature), D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error));
fixed(ID3D12RootSignature **rootSignature = &_rootSignature)
{
iid = IID_ID3D12RootSignature;
ThrowIfFailed(nameof(ID3D12Device.CreateRootSignature), _device->CreateRootSignature(nodeMask: 0, signature->GetBufferPointer(), signature->GetBufferSize(), &iid, (void **)rootSignature));
}
}
// Create the pipeline state, which includes compiling and loading shaders.
{
var compileFlags = 0u;
#if DEBUG
// Enable better shader debugging with the graphics debugging tools.
compileFlags |= D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION;
#endif
fixed(char *fileName = GetAssetFullPath(@"D3D12\Assets\Shaders\HelloTriangle.hlsl"))
{
var entryPoint = 0x00006E69614D5356; // VSMain
var target = 0x0000305F355F7376; // vs_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &vertexShader, ppErrorMsgs: null));
entryPoint = 0x00006E69614D5350; // PSMain
target = 0x0000305F355F7370; // ps_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &pixelShader, ppErrorMsgs: null));
}
// Define the vertex input layout.
const int InputElementDescsCount = 2;
var semanticName0 = stackalloc ulong[2] {
0x4E4F495449534F50, // POSITION
0x0000000000000000,
};
var semanticName1 = stackalloc ulong[1] {
0x000000524F4C4F43, // COLOR
};
var inputElementDescs = stackalloc D3D12_INPUT_ELEMENT_DESC[InputElementDescsCount] {
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName0,
Format = DXGI_FORMAT_R32G32B32_FLOAT,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName1,
Format = DXGI_FORMAT_R32G32B32A32_FLOAT,
AlignedByteOffset = 12,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
};
// Describe and create the graphics pipeline state object (PSO).
var psoDesc = new D3D12_GRAPHICS_PIPELINE_STATE_DESC {
InputLayout = new D3D12_INPUT_LAYOUT_DESC {
pInputElementDescs = inputElementDescs,
NumElements = InputElementDescsCount,
},
pRootSignature = _rootSignature,
VS = new D3D12_SHADER_BYTECODE(vertexShader),
PS = new D3D12_SHADER_BYTECODE(pixelShader),
RasterizerState = D3D12_RASTERIZER_DESC.DEFAULT,
BlendState = D3D12_BLEND_DESC.DEFAULT,
DepthStencilState = D3D12_DEPTH_STENCIL_DESC.DEFAULT,
SampleMask = uint.MaxValue,
PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE,
NumRenderTargets = 1,
SampleDesc = _msaaDesc,
};
psoDesc.DepthStencilState.DepthEnable = FALSE;
psoDesc.RTVFormats[0] = DXGI_FORMAT_B8G8R8A8_UNORM;
fixed(ID3D12PipelineState **pipelineState = &_pipelineState)
{
iid = IID_ID3D12PipelineState;
ThrowIfFailed(nameof(ID3D12Device.CreateGraphicsPipelineState), _device->CreateGraphicsPipelineState(&psoDesc, &iid, (void **)pipelineState));
}
}
// Create the command list.
fixed(ID3D12GraphicsCommandList **commandList = &_commandList)
{
iid = IID_ID3D12GraphicsCommandList;
ThrowIfFailed(nameof(ID3D12Device.CreateCommandList), _device->CreateCommandList(nodeMask: 0, D3D12_COMMAND_LIST_TYPE_DIRECT, _commandAllocator, _pipelineState, &iid, (void **)commandList));
}
// Command lists are created in the recording state, but there is nothing
// to record yet. The main loop expects it to be closed, so close it now.
ThrowIfFailed(nameof(ID3D12GraphicsCommandList.Close), _commandList->Close());
// Create the vertex buffer.
{
// Define the geometry for a triangle.
const int TriangleVerticesCount = 3;
var triangleVertices = stackalloc Vertex[TriangleVerticesCount] {
new Vertex {
Position = new Vector3(0.0f, 0.25f * AspectRatio, 0.0f),
Color = new Vector4(1.0f, 0.0f, 0.0f, 1.0f)
},
new Vertex {
Position = new Vector3(0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 1.0f, 0.0f, 1.0f)
},
new Vertex {
Position = new Vector3(-0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 0.0f, 1.0f, 1.0f)
},
};
var vertexBufferSize = (uint)sizeof(Vertex) * TriangleVerticesCount;
// Note: using upload heaps to transfer static data like vert buffers is not
// recommended. Every time the GPU needs it, the upload heap will be marshalled
// over. Please read up on Default Heap usage. An upload heap is used here for
// code simplicity and because there are very few verts to actually transfer.
fixed(ID3D12Resource **vertexBuffer = &_vertexBuffer)
{
var heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
var bufferDesc = D3D12_RESOURCE_DESC.Buffer(vertexBufferSize);
iid = IID_ID3D12Resource;
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
pOptimizedClearValue: null,
&iid,
(void **)vertexBuffer
));
}
// Copy the triangle data to the vertex buffer.
var readRange = new D3D12_RANGE();
byte *pVertexDataBegin;
ThrowIfFailed(nameof(ID3D12Resource.Map), _vertexBuffer->Map(Subresource: 0, &readRange, (void **)&pVertexDataBegin));
Unsafe.CopyBlock(pVertexDataBegin, triangleVertices, vertexBufferSize);
_vertexBuffer->Unmap(0, null);
// Initialize the vertex buffer view.
_vertexBufferView.BufferLocation = _vertexBuffer->GetGPUVirtualAddress();
_vertexBufferView.StrideInBytes = (uint)sizeof(Vertex);
_vertexBufferView.SizeInBytes = vertexBufferSize;
}
// Create synchronization objects and wait until assets have been uploaded to the GPU.
{
fixed(ID3D12Fence **fence = &_fence)
{
iid = IID_ID3D12Fence;
ThrowIfFailed(nameof(ID3D12Device.CreateFence), _device->CreateFence(0, D3D12_FENCE_FLAG_NONE, &iid, (void **)fence));
_fenceValue = 1;
}
// Create an event handle to use for frame synchronization.
_fenceEvent = CreateEventW(lpEventAttributes: null, bManualReset: FALSE, bInitialState: FALSE, lpName: null);
if (_fenceEvent == null)
{
var hr = Marshal.GetHRForLastWin32Error();
Marshal.ThrowExceptionForHR(hr);
}
// Wait for the command list to execute; we are reusing the same command
// list in our main loop but for now, we just want to wait for setup to
// complete before continuing.
WaitForPreviousFrame();
}
}
finally
{
if (signature != null)
{
signature->Release();
}
if (error != null)
{
error->Release();
}
if (vertexShader != null)
{
vertexShader->Release();
}
if (pixelShader != null)
{
pixelShader->Release();
}
}
}
protected unsafe GraphicsShader CompileShader(GraphicsDevice graphicsDevice, GraphicsShaderKind kind, string shaderName, string entryPointName)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && _compositionAssemblies.Contains(Program.s_graphicsProviderD3D12))
{
var assetName = $"{shaderName}{kind}.hlsl";
fixed(char *assetPath = GetAssetFullPath("Shaders", assetName))
fixed(sbyte *entryPoint = MarshalStringToUtf8(entryPointName))
{
var compileFlags = 0u;
#if DEBUG
// Enable better shader debugging with the graphics debugging tools.
compileFlags |= D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION;
#endif
ID3DBlob *d3dShaderBlob = null;
try
{
var result = D3DCompileFromFile((ushort *)assetPath, pDefines: null, (ID3DInclude *)D3D_COMPILE_STANDARD_FILE_INCLUDE, entryPoint, GetD3D12CompileTarget(kind).AsPointer(), compileFlags, Flags2: 0, &d3dShaderBlob, ppErrorMsgs: null);
if (FAILED(result))
{
ThrowExternalException(nameof(D3DCompileFromFile), result);
}
var shaderBytecode = new ReadOnlySpan <byte>(d3dShaderBlob->GetBufferPointer(), (int)d3dShaderBlob->GetBufferSize());
return(graphicsDevice.CreateGraphicsShader(kind, shaderBytecode, entryPointName));
}
finally
{
if (d3dShaderBlob != null)
{
d3dShaderBlob->Release();
}
}
}
}
else
{
var assetName = $"{shaderName}{kind}.glsl";
var assetPath = GetAssetFullPath("Shaders", assetName);
var assetOutput = Path.ChangeExtension(assetPath, "spirv");
var additionalArgs = string.Empty;
#if DEBUG
// Enable better shader debugging with the graphics debugging tools.
additionalArgs += $" -g -O0";
#endif
var glslcProcessStartInfo = new ProcessStartInfo {
Arguments = $"-fshader-stage={GetVulkanShaderStage(kind)} -o \"{assetOutput}\" -std=450core --target-env=vulkan1.0 --target-spv=spv1.0 -x glsl{additionalArgs} {assetPath}",
FileName = "glslc.exe",
WorkingDirectory = Path.GetDirectoryName(assetPath) !,
};
Process.Start(glslcProcessStartInfo) !.WaitForExit();
using var fileReader = File.OpenRead(assetOutput);
var bytecode = new byte[fileReader.Length];
_ = fileReader.Read(bytecode);
return(graphicsDevice.CreateGraphicsShader(kind, bytecode, entryPointName));
}
private static unsafe void CopyBytesToBlob(out ID3DBlob *blob, UIntPtr size, byte[] bytes)
{
Span <byte> span = CreateBlob(out blob, size);
bytes.CopyTo(span);
}
public static extern int D3DWriteBlobToFile(ID3DBlob *pBlob, [NativeTypeName("LPCWSTR")] ushort *pFileName, [NativeTypeName("BOOL")] int bOverwrite);
private Pointer <ID3D12RootSignature> CreateD3D12RootSignature()
{
ThrowIfDisposedOrDisposing(_state, nameof(D3D12GraphicsPipelineSignature));
ID3DBlob *rootSignatureBlob = null;
ID3DBlob *rootSignatureErrorBlob = null;
try
{
ID3D12RootSignature *d3d12RootSignature;
var rootSignatureDesc = new D3D12_ROOT_SIGNATURE_DESC {
Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT,
};
var resources = Resources;
var resourcesLength = resources.Length;
var rootParametersLength = 0;
var staticSamplersLength = 0;
var rootParametersIndex = 0;
var constantShaderRegister = 0;
var textureShaderRegister = 0;
var staticSamplersIndex = 0;
for (var inputIndex = 0; inputIndex < resourcesLength; inputIndex++)
{
rootParametersLength++;
if (resources[inputIndex].Kind == GraphicsPipelineResourceKind.Texture)
{
staticSamplersLength++;
}
}
var rootParameters = stackalloc D3D12_ROOT_PARAMETER[rootParametersLength];
var staticSamplers = stackalloc D3D12_STATIC_SAMPLER_DESC[staticSamplersLength];
var descriptorRanges = stackalloc D3D12_DESCRIPTOR_RANGE[staticSamplersLength];
for (var inputIndex = 0; inputIndex < resourcesLength; inputIndex++)
{
var input = resources[inputIndex];
switch (input.Kind)
{
case GraphicsPipelineResourceKind.ConstantBuffer:
{
var shaderVisibility = GetD3D12ShaderVisiblity(input.ShaderVisibility);
rootParameters[rootParametersIndex].InitAsConstantBufferView(unchecked ((uint)constantShaderRegister), registerSpace: 0, shaderVisibility);
constantShaderRegister++;
rootParametersIndex++;
break;
}
case GraphicsPipelineResourceKind.Texture:
{
descriptorRanges[staticSamplersIndex] = new D3D12_DESCRIPTOR_RANGE(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, numDescriptors: 1, baseShaderRegister: unchecked ((uint)textureShaderRegister));
var shaderVisibility = GetD3D12ShaderVisiblity(input.ShaderVisibility);
rootParameters[rootParametersIndex].InitAsDescriptorTable(1, &descriptorRanges[staticSamplersIndex], shaderVisibility);
staticSamplers[staticSamplersIndex] = new D3D12_STATIC_SAMPLER_DESC(
shaderRegister: unchecked ((uint)staticSamplersIndex),
shaderVisibility: shaderVisibility
);
textureShaderRegister++;
rootParametersIndex++;
staticSamplersIndex++;
break;
}
default:
{
break;
}
}
}
rootSignatureDesc.NumParameters = unchecked ((uint)rootParametersLength);
rootSignatureDesc.pParameters = rootParameters;
rootSignatureDesc.NumStaticSamplers = unchecked ((uint)staticSamplersLength);
rootSignatureDesc.pStaticSamplers = staticSamplers;
ThrowExternalExceptionIfFailed(D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &rootSignatureBlob, &rootSignatureErrorBlob), nameof(D3D12SerializeRootSignature));
var iid = IID_ID3D12RootSignature;
ThrowExternalExceptionIfFailed(Device.D3D12Device->CreateRootSignature(0, rootSignatureBlob->GetBufferPointer(), rootSignatureBlob->GetBufferSize(), &iid, (void **)&d3d12RootSignature), nameof(ID3D12Device.CreateRootSignature));
return(d3d12RootSignature);
}
finally
{
ReleaseIfNotNull(rootSignatureErrorBlob);
ReleaseIfNotNull(rootSignatureBlob);
}
public D3D12_SHADER_BYTECODE(ID3DBlob *pShaderBlob)
{
pShaderBytecode = pShaderBlob->GetBufferPointer();
BytecodeLength = pShaderBlob->GetBufferSize();
}
/// <summary>
/// Embeds the bytecode for an exported shader as private data into another shader bytecode.
/// </summary>
/// <param name="shaderBlob">The bytecode produced by <see cref="CompileD2DFullShader(ReadOnlySpan{char}, D2D1ShaderProfile)"/>.</param>
/// <param name="exportBlob">The bytecode produced by <see cref="CompileD2DFunction(ReadOnlySpan{char}, D2D1ShaderProfile)"/>.</param>
/// <returns>An <see cref="ID3DBlob"/> instance with the combined data of <paramref name="shaderBlob"/> and <paramref name="exportBlob"/>.</returns>
private static ComPtr <ID3DBlob> EmbedD2DFunctionPrivateData(ID3DBlob *shaderBlob, ID3DBlob *exportBlob)
{
void *shaderPtr = shaderBlob->GetBufferPointer();
nuint shaderSize = shaderBlob->GetBufferSize();
void *exportPtr = exportBlob->GetBufferPointer();
nuint exportSize = exportBlob->GetBufferSize();
using ComPtr <ID3DBlob> resultBlob = default;
DirectX.D3DSetBlobPart(
pSrcData: shaderPtr,
SrcDataSize: shaderSize,
Part: D3D_BLOB_PART.D3D_BLOB_PRIVATE_DATA,
Flags: 0,
pPart: exportPtr,
PartSize: exportSize,
ppNewShader: resultBlob.GetAddressOf()).Assert();
return(resultBlob.Move());
}
// Load the sample assets.
private void LoadAssets()
{
Guid iid;
ID3DBlob *signature = null;
ID3DBlob *error = null;
ID3DBlob *vertexShader = null;
ID3DBlob *pixelShader = null;
try
{
// Create the root signature.
{
var featureData = new D3D12_FEATURE_DATA_ROOT_SIGNATURE {
// This is the highest version the sample supports. If CheckFeatureSupport succeeds, the HighestVersion returned will not be greater than this.
HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_1
};
if (FAILED(_device->CheckFeatureSupport(D3D12_FEATURE_ROOT_SIGNATURE, &featureData, (uint)sizeof(D3D12_FEATURE))))
{
featureData.HighestVersion = D3D_ROOT_SIGNATURE_VERSION_1_0;
}
const int RangesCount = 1;
var ranges = stackalloc D3D12_DESCRIPTOR_RANGE1[RangesCount];
ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0, 0, D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC);
const int RootParametersCount = 1;
var rootParameters = stackalloc D3D12_ROOT_PARAMETER1[RootParametersCount];
rootParameters[0].InitAsDescriptorTable(1, ranges, D3D12_SHADER_VISIBILITY_PIXEL);
var sampler = new D3D12_STATIC_SAMPLER_DESC {
Filter = D3D12_FILTER.D3D12_FILTER_MIN_MAG_MIP_POINT,
AddressU = D3D12_TEXTURE_ADDRESS_MODE_BORDER,
AddressV = D3D12_TEXTURE_ADDRESS_MODE_BORDER,
AddressW = D3D12_TEXTURE_ADDRESS_MODE_BORDER,
MipLODBias = 0,
MaxAnisotropy = 0,
ComparisonFunc = D3D12_COMPARISON_FUNC_NEVER,
BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK,
MinLOD = 0.0f,
MaxLOD = D3D12_FLOAT32_MAX,
ShaderRegister = 0,
RegisterSpace = 0,
ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL,
};
var rootSignatureDesc = new D3D12_VERSIONED_ROOT_SIGNATURE_DESC();
rootSignatureDesc.Init_1_1(RootParametersCount, rootParameters, 1, &sampler, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT);
ThrowIfFailed(nameof(D3D12SerializeVersionedRootSignature), D3D12SerializeVersionedRootSignature(
&rootSignatureDesc, featureData.HighestVersion, &signature, &error));
fixed(ID3D12RootSignature **rootSignature = &_rootSignature)
{
iid = IID_ID3D12RootSignature;
ThrowIfFailed(nameof(ID3D12Device.CreateRootSignature), _device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), &iid, (void **)rootSignature));
}
}
// Create the pipeline state, which includes compiling and loading shaders.
{
var compileFlags = 0u;
#if DEBUG
// Enable better shader debugging with the graphics debugging tools.
compileFlags |= D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION;
#endif
fixed(char *fileName = GetAssetFullPath(@"D3D12\Assets\Shaders\HelloTexture.hlsl"))
{
var entryPoint = 0x00006E69614D5356; // VSMain
var target = 0x0000305F355F7376; // vs_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &vertexShader, ppErrorMsgs: null));
entryPoint = 0x00006E69614D5350; // PSMain
target = 0x0000305F355F7370; // ps_5_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, pDefines: null, pInclude: null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, Flags2: 0, &pixelShader, ppErrorMsgs: null));
}
// Define the vertex input layout.
const int InputElementDescsCount = 2;
var semanticName0 = stackalloc ulong[2] {
0x4E4F495449534F50, // POSITION
0x0000000000000000,
};
var semanticName1 = stackalloc ulong[2] {
0x44524F4F43584554, // TEXCOORD
0x0000000000000000,
};
var inputElementDescs = stackalloc D3D12_INPUT_ELEMENT_DESC[InputElementDescsCount] {
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName0,
Format = DXGI_FORMAT_R32G32B32_FLOAT,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
new D3D12_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)semanticName1,
Format = DXGI_FORMAT_R32G32_FLOAT,
AlignedByteOffset = 12,
InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA,
},
};
// Describe and create the graphics pipeline state object (PSO).
var psoDesc = new D3D12_GRAPHICS_PIPELINE_STATE_DESC {
InputLayout = new D3D12_INPUT_LAYOUT_DESC {
pInputElementDescs = inputElementDescs,
NumElements = InputElementDescsCount,
},
pRootSignature = _rootSignature,
VS = new D3D12_SHADER_BYTECODE(vertexShader),
PS = new D3D12_SHADER_BYTECODE(pixelShader),
RasterizerState = D3D12_RASTERIZER_DESC.DEFAULT,
BlendState = D3D12_BLEND_DESC.DEFAULT,
DepthStencilState = new D3D12_DEPTH_STENCIL_DESC {
DepthEnable = FALSE,
StencilEnable = FALSE,
},
SampleMask = uint.MaxValue,
PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE,
NumRenderTargets = 1,
SampleDesc = new DXGI_SAMPLE_DESC(count: 1, quality: 0),
};
psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM;
fixed(ID3D12PipelineState **pipelineState = &_pipelineState)
{
iid = IID_ID3D12PipelineState;
ThrowIfFailed(nameof(ID3D12Device.CreateGraphicsPipelineState), _device->CreateGraphicsPipelineState(&psoDesc, &iid, (void **)pipelineState));
}
}
// Create the command list.
fixed(ID3D12GraphicsCommandList **commandList = &_commandList)
{
iid = IID_ID3D12GraphicsCommandList;
ThrowIfFailed(nameof(ID3D12Device.CreateCommandList), _device->CreateCommandList(nodeMask: 0, D3D12_COMMAND_LIST_TYPE_DIRECT, _commandAllocator, _pipelineState, &iid, (void **)commandList));
}
// Create the vertex buffer.
{
// Define the geometry for a triangle.
const int TriangleVerticesCount = 3;
var triangleVertices = stackalloc Vertex[TriangleVerticesCount] {
new Vertex {
Position = new Vector3(0.0f, 0.25f * AspectRatio, 0.0f),
UV = new Vector2(0.5f, 0.0f)
},
new Vertex {
Position = new Vector3(0.25f, -0.25f * AspectRatio, 0.0f),
UV = new Vector2(1.0f, 1.0f)
},
new Vertex {
Position = new Vector3(-0.25f, -0.25f * AspectRatio, 0.0f),
UV = new Vector2(0.0f, 1.0f)
},
};
var vertexBufferSize = (uint)sizeof(Vertex) * TriangleVerticesCount;
// Note: using upload heaps to transfer static data like vert buffers is not
// recommended. Every time the GPU needs it, the upload heap will be marshalled
// over. Please read up on Default Heap usage. An upload heap is used here for
// code simplicity and because there are very few verts to actually transfer.
fixed(ID3D12Resource **vertexBuffer = &_vertexBuffer)
{
var heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
var bufferDesc = D3D12_RESOURCE_DESC.Buffer(vertexBufferSize);
iid = IID_ID3D12Resource;
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
pOptimizedClearValue: null,
&iid,
(void **)vertexBuffer
));
}
// Copy the triangle data to the vertex buffer.
var readRange = new D3D12_RANGE();
byte *pVertexDataBegin;
ThrowIfFailed(nameof(ID3D12Resource.Map), _vertexBuffer->Map(Subresource: 0, &readRange, (void **)&pVertexDataBegin));
Unsafe.CopyBlock(pVertexDataBegin, triangleVertices, vertexBufferSize);
_vertexBuffer->Unmap(0, null);
// Initialize the vertex buffer view.
_vertexBufferView.BufferLocation = _vertexBuffer->GetGPUVirtualAddress();
_vertexBufferView.StrideInBytes = (uint)sizeof(Vertex);
_vertexBufferView.SizeInBytes = vertexBufferSize;
}
// Note: textureUploadHeap needs to stay in scope until
// the command list that references it has finished executing on the GPU.
// We will flush the GPU at the end of this method to ensure the resource is not
// prematurely destroyed.
ID3D12Resource *textureUploadHeap;
// Create the texture.
{
// Describe and create a Texture2D.
var textureDesc = new D3D12_RESOURCE_DESC {
MipLevels = 1,
Format = DXGI_FORMAT_R8G8B8A8_UNORM,
Width = TextureWidth,
Height = TextureHeight,
Flags = D3D12_RESOURCE_FLAG_NONE,
DepthOrArraySize = 1,
SampleDesc = new DXGI_SAMPLE_DESC {
Count = 1,
Quality = 0,
},
Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D,
};
fixed(ID3D12Resource **pTexture = &_texture)
{
var heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
iid = IID_ID3D12Resource;
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&textureDesc,
D3D12_RESOURCE_STATE_COPY_DEST,
pOptimizedClearValue: null,
&iid,
(void **)pTexture
));
var uploadBufferSize = GetRequiredIntermediateSize(_texture, 0, 1);
// Create the GPU upload buffer.
heapProperties = new D3D12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
var bufferDesc = D3D12_RESOURCE_DESC.Buffer(uploadBufferSize);
ThrowIfFailed(nameof(ID3D12Device.CreateCommittedResource), _device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
pOptimizedClearValue: null,
&iid,
(void **)&textureUploadHeap
));
}
// Copy data to the intermediate upload heap and then schedule a copy
// from the upload heap to the Texture2D.
var texture = GenerateTextureData();
var rowPitch = TextureWidth * TexturePixelSize;
var slicePitch = rowPitch * TextureHeight;
D3D12_SUBRESOURCE_DATA textureData;
fixed(byte *pTexture = &texture[0])
{
textureData = new D3D12_SUBRESOURCE_DATA {
pData = (void *)pTexture,
RowPitch = (nint)rowPitch,
SlicePitch = (nint)slicePitch,
};
}
UpdateSubresources(_commandList, _texture, textureUploadHeap, 0, 0, 1, &textureData);
var barrier = D3D12_RESOURCE_BARRIER.InitTransition(_texture, D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE);
_commandList->ResourceBarrier(1, &barrier);
// Describe and create a SRV for the texture.
var srvDesc = new D3D12_SHADER_RESOURCE_VIEW_DESC {
Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING,
Format = textureDesc.Format,
ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D,
};
srvDesc.Anonymous.Texture2D.MipLevels = 1;
_device->CreateShaderResourceView(_texture, &srvDesc, _srvHeap->GetCPUDescriptorHandleForHeapStart());
}
// Close the command list and execute it to begin the initial GPU setup.
ThrowIfFailed(nameof(ID3D12GraphicsCommandList.Close), _commandList->Close());
const int CommandListsCount = 1;
var ppCommandLists = stackalloc ID3D12CommandList *[CommandListsCount] {
(ID3D12CommandList *)_commandList,
};
_commandQueue->ExecuteCommandLists(CommandListsCount, ppCommandLists);
// Create synchronization objects and wait until assets have been uploaded to the GPU.
{
fixed(ID3D12Fence **fence = &_fence)
{
iid = IID_ID3D12Fence;
ThrowIfFailed(nameof(ID3D12Device.CreateFence), _device->CreateFence(0, D3D12_FENCE_FLAG_NONE, &iid, (void **)fence));
_fenceValue = 1;
}
// Create an event handle to use for frame synchronization.
_fenceEvent = CreateEventW(lpEventAttributes: null, bManualReset: FALSE, bInitialState: FALSE, lpName: null);
if (_fenceEvent == null)
{
var hr = Marshal.GetHRForLastWin32Error();
Marshal.ThrowExceptionForHR(hr);
}
// Wait for the command list to execute; we are reusing the same command
// list in our main loop but for now, we just want to wait for setup to
// complete before continuing.
WaitForPreviousFrame();
}
}
finally
{
if (signature != null)
{
signature->Release();
}
if (error != null)
{
error->Release();
}
if (vertexShader != null)
{
vertexShader->Release();
}
if (pixelShader != null)
{
pixelShader->Release();
}
}
}
public override void OnInit()
{
Guid iid;
IDXGIFactory1 * factory = null;
IDXGIAdapter * adapter = null;
ID3D11Texture2D *backBuffer = null;
ID3DBlob * vertexShaderBlob = null;
ID3DBlob * pixelShaderBlob = null;
try
{
iid = IID_IDXGIFactory1;
ThrowIfFailed(nameof(CreateDXGIFactory1), CreateDXGIFactory1(&iid, (void **)&factory));
if (UseWarpDevice)
{
throw new NotImplementedException("WARP Device not supported for D3D11.");
}
else
{
adapter = GetHardwareAdapter(factory);
}
fixed(ID3D11Device **device = &_device)
fixed(ID3D11DeviceContext **immediateContext = &_immediateContext)
{
var featureLevel = D3D_FEATURE_LEVEL_11_0;
ThrowIfFailed(nameof(D3D11CreateDevice), D3D11CreateDevice(adapter, D3D_DRIVER_TYPE_HARDWARE, Software: IntPtr.Zero, Flags: 0, &featureLevel, FeatureLevels: 1, D3D11_SDK_VERSION, device, pFeatureLevel: null, immediateContext));
}
// Describe and create the swap chain.
var swapChainDesc = new DXGI_SWAP_CHAIN_DESC {
BufferDesc = new DXGI_MODE_DESC {
Width = Width,
Height = Height,
Format = DXGI_FORMAT_R8G8B8A8_UNORM,
},
SampleDesc = new DXGI_SAMPLE_DESC {
Count = 1
},
BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT,
BufferCount = FrameCount,
OutputWindow = Win32Application.Hwnd,
Windowed = TRUE,
SwapEffect = DXGI_SWAP_EFFECT_DISCARD,
};
fixed(IDXGISwapChain **swapChain = &_swapChain)
{
ThrowIfFailed(nameof(IDXGIFactory1.CreateSwapChain), factory->CreateSwapChain(
(IUnknown *)_device,
&swapChainDesc,
swapChain
));
}
// This sample does not support fullscreen transitions.
ThrowIfFailed(nameof(IDXGIFactory.MakeWindowAssociation), factory->MakeWindowAssociation(Win32Application.Hwnd, DXGI_MWA_NO_ALT_ENTER));
fixed(ID3D11RenderTargetView **renderTarget = &_renderTarget)
{
iid = IID_ID3D11Texture2D;
ThrowIfFailed(nameof(IDXGISwapChain.GetBuffer), _swapChain->GetBuffer(0, &iid, (void **)&backBuffer));
ThrowIfFailed(nameof(ID3D11Device.CreateRenderTargetView), _device->CreateRenderTargetView((ID3D11Resource *)backBuffer, null, renderTarget));
_immediateContext->OMSetRenderTargets(1, renderTarget, pDepthStencilView: null);
}
var vp = new D3D11_VIEWPORT {
Width = Width,
Height = Height,
MinDepth = 0.0f,
MaxDepth = 1.0f,
TopLeftX = 0,
TopLeftY = 0,
};
_immediateContext->RSSetViewports(1, &vp);
var compileFlags = 0u;
fixed(char *fileName = GetAssetFullPath(@"D3D11\Assets\Shaders\HelloTriangle.hlsl"))
fixed(ID3D11VertexShader **vertexShader = &_vertexShader)
fixed(ID3D11PixelShader **pixelShader = &_pixelShader)
{
var entryPoint = 0x00006E69614D5356; // VSMain
var target = 0x0000305F345F7376; // vs_4_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, null, null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, 0, &vertexShaderBlob, null));
ThrowIfFailed(nameof(ID3D11Device.CreateVertexShader), _device->CreateVertexShader(vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), pClassLinkage: null, vertexShader));
entryPoint = 0x00006E69614D5350; // PSMain
target = 0x0000305F345F7370; // ps_4_0
ThrowIfFailed(nameof(D3DCompileFromFile), D3DCompileFromFile((ushort *)fileName, null, null, (sbyte *)&entryPoint, (sbyte *)&target, compileFlags, 0, &pixelShaderBlob, null));
ThrowIfFailed(nameof(ID3D11Device.CreatePixelShader), _device->CreatePixelShader(pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize(), pClassLinkage: null, pixelShader));
}
var inputElementDescs = stackalloc D3D11_INPUT_ELEMENT_DESC[2];
{
var semanticName0 = stackalloc sbyte[9];
{
((ulong *)semanticName0)[0] = 0x4E4F495449534F50; // POSITION
}
inputElementDescs[0] = new D3D11_INPUT_ELEMENT_DESC {
SemanticName = semanticName0,
SemanticIndex = 0,
Format = DXGI_FORMAT_R32G32B32_FLOAT,
InputSlot = 0,
AlignedByteOffset = 0,
InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA,
InstanceDataStepRate = 0
};
var semanticName1 = 0x000000524F4C4F43; // COLOR
inputElementDescs[1] = new D3D11_INPUT_ELEMENT_DESC {
SemanticName = (sbyte *)&semanticName1,
SemanticIndex = 0,
Format = DXGI_FORMAT_R32G32B32A32_FLOAT,
InputSlot = 0,
AlignedByteOffset = 12,
InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA,
InstanceDataStepRate = 0
};
}
fixed(ID3D11InputLayout **inputLayout = &_inputLayout)
{
ThrowIfFailed(nameof(ID3D11Device.CreateInputLayout), _device->CreateInputLayout(inputElementDescs, NumElements: 2, vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), inputLayout));
}
_immediateContext->IASetInputLayout(_inputLayout);
var triangleVertices = stackalloc Vertex[3];
{
triangleVertices[0] = new Vertex {
Position = new Vector3(0.0f, 0.25f * AspectRatio, 0.0f),
Color = new Vector4(1.0f, 0.0f, 0.0f, 1.0f)
};
triangleVertices[1] = new Vertex {
Position = new Vector3(0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 1.0f, 0.0f, 1.0f)
};
triangleVertices[2] = new Vertex {
Position = new Vector3(-0.25f, -0.25f * AspectRatio, 0.0f),
Color = new Vector4(0.0f, 0.0f, 1.0f, 1.0f)
};
}
var vertexBufferSize = (uint)sizeof(Vertex) * 3;
var vertexBufferDesc = new D3D11_BUFFER_DESC {
ByteWidth = vertexBufferSize,
Usage = D3D11_USAGE_DEFAULT,
BindFlags = (uint)D3D11_BIND_VERTEX_BUFFER
};
var vertexBufferData = new D3D11_SUBRESOURCE_DATA {
pSysMem = triangleVertices
};
fixed(ID3D11Buffer **vertexBuffer = &_vertexBuffer)
{
ThrowIfFailed(nameof(ID3D11Device.CreateBuffer), _device->CreateBuffer(&vertexBufferDesc, &vertexBufferData, vertexBuffer));
var stride = (uint)sizeof(Vertex);
var offset = 0u;
_immediateContext->IASetVertexBuffers(0, 1, vertexBuffer, &stride, &offset);
}
_immediateContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
}
finally
{
if (pixelShaderBlob != null)
{
_ = pixelShaderBlob->Release();
}
if (vertexShaderBlob != null)
{
_ = vertexShaderBlob->Release();
}
if (backBuffer != null)
{
_ = backBuffer->Release();
}
if (adapter != null)
{
_ = adapter->Release();
}
if (factory != null)
{
_ = factory->Release();
}
}
}
protected unsafe GraphicsShader CompileShader(GraphicsDevice graphicsDevice, GraphicsShaderKind kind, string shaderName, string entryPointName)
{
var assetName = $"{shaderName}{kind}.hlsl";
fixed(char *assetPath = GetAssetFullPath("Shaders", shaderName, assetName))
fixed(sbyte *entryPoint = entryPointName.GetUtf8Span())
{
var compileFlags = 0u;
if (GraphicsService.EnableDebugMode)
{
// Enable better shader debugging with the graphics debugging tools.
compileFlags |= D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION;
}
else
{
compileFlags |= D3DCOMPILE_OPTIMIZATION_LEVEL3;
}
ID3DBlob *d3dShaderBlob = null;
ID3DBlob *d3dShaderErrorBlob = null;
try
{
var result = D3DCompileFromFile((ushort *)assetPath, pDefines: null, D3D_COMPILE_STANDARD_FILE_INCLUDE, entryPoint, GetD3D12CompileTarget(kind).GetPointer(), compileFlags, Flags2: 0, &d3dShaderBlob, ppErrorMsgs: &d3dShaderErrorBlob);
if (FAILED(result))
{
// todo: var span = TerraFX.Utilities.InteropUtilities.MarshalUtf8ToReadOnlySpan((sbyte*)pError->GetBufferPointer(), (int)pError->GetBufferSize());
var errorMsg = System.Text.Encoding.UTF8.GetString((byte *)d3dShaderErrorBlob->GetBufferPointer(), (int)d3dShaderErrorBlob->GetBufferSize());
Console.WriteLine(errorMsg);
ExceptionUtilities.ThrowExternalException(nameof(D3DCompileFromFile), result);
}
var bytecode = new UnmanagedArray <byte>(d3dShaderBlob->GetBufferSize());
new UnmanagedReadOnlySpan <byte>((byte *)d3dShaderBlob->GetBufferPointer(), bytecode.Length).CopyTo(bytecode);
switch (kind)
{
case GraphicsShaderKind.Pixel:
{
return(graphicsDevice.CreatePixelShader(bytecode, entryPointName));
}
case GraphicsShaderKind.Vertex:
{
return(graphicsDevice.CreateVertexShader(bytecode, entryPointName));
}
default:
{
ThrowForInvalidKind(kind);
return(null !);
}
}
}
finally
{
if (d3dShaderBlob != null)
{
_ = d3dShaderBlob->Release();
}
if (d3dShaderErrorBlob != null)
{
_ = d3dShaderErrorBlob->Release();
}
}
}
public static extern HRESULT D3DWriteBlobToFile(ID3DBlob *pBlob, [NativeTypeName("LPCWSTR")] ushort *pFileName, BOOL bOverwrite);
private Pointer <ID3D12RootSignature> CreateD3D12RootSignature()
{
_state.ThrowIfDisposedOrDisposing();
ID3DBlob *rootSignatureBlob = null;
ID3DBlob *rootSignatureErrorBlob = null;
try
{
ID3D12RootSignature *d3d12RootSignature;
var rootParameters = Array.Empty <D3D12_ROOT_PARAMETER>();
var rootSignatureDesc = new D3D12_ROOT_SIGNATURE_DESC {
Flags = D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT,
};
var resources = Resources;
var resourcesLength = resources.Length;
var rootParametersIndex = 0;
var constantShaderRegister = 0;
if (resourcesLength != 0)
{
rootParameters = new D3D12_ROOT_PARAMETER[resourcesLength];
for (var inputIndex = 0; inputIndex < resourcesLength; inputIndex++)
{
var input = resources[inputIndex];
switch (input.Kind)
{
case GraphicsPipelineResourceKind.ConstantBuffer:
{
var shaderVisibility = GetD3D12ShaderVisiblity(input.ShaderVisibility);
rootParameters[rootParametersIndex].InitAsConstantBufferView(unchecked ((uint)constantShaderRegister), registerSpace: 0, shaderVisibility);
constantShaderRegister++;
rootParametersIndex++;
break;
}
default:
{
break;
}
}
}
}
fixed(D3D12_ROOT_PARAMETER *pRootParameters = rootParameters)
{
rootSignatureDesc.NumParameters = unchecked ((uint)rootParameters.Length);
rootSignatureDesc.pParameters = pRootParameters;
ThrowExternalExceptionIfFailed(nameof(D3D12SerializeRootSignature), D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &rootSignatureBlob, &rootSignatureErrorBlob));
}
var iid = IID_ID3D12RootSignature;
ThrowExternalExceptionIfFailed(nameof(ID3D12Device.CreateRootSignature), D3D12GraphicsDevice.D3D12Device->CreateRootSignature(0, rootSignatureBlob->GetBufferPointer(), rootSignatureBlob->GetBufferSize(), &iid, (void **)&d3d12RootSignature));
return(d3d12RootSignature);
}
finally
{
ReleaseIfNotNull(rootSignatureErrorBlob);
ReleaseIfNotNull(rootSignatureBlob);
}
