public DescriptorHandle(ID3D12DescriptorHeap heap, int sizeIncrement, CpuDescriptorHandle cpuHandle, GpuDescriptorHandle gpuHandle)
{
Heap = heap;
SizeIncrement = sizeIncrement;
CpuHandle = cpuHandle;
GpuHandle = gpuHandle;
}
public DescriptorHandle Allocate(int count)
{
if (_currentHeap == null ||
_remainingFreeHandles < count)
{
_currentHeap = Device.RequestNewHeap(Type, DescriptorsPerHeap);
_currentCpuHandle = _currentHeap.GetCPUDescriptorHandleForHeapStart();
if (IsShaderVisible)
{
_currentGpuHandle = _currentHeap.GetGPUDescriptorHandleForHeapStart();
}
_remainingFreeHandles = DescriptorsPerHeap;
if (_descriptorSize == 0)
{
_descriptorSize = Device.D3D12Device.GetDescriptorHandleIncrementSize(Type);
}
}
var cpuHandle = _currentCpuHandle;
_currentCpuHandle.Ptr += count * _descriptorSize;
_remainingFreeHandles -= count;
if (IsShaderVisible)
{
var gpuHandle = _currentGpuHandle;
_currentGpuHandle.Ptr += (long)(count * _descriptorSize);
return(new DescriptorHandle(_currentHeap, _descriptorSize, cpuHandle, gpuHandle));
}
return(new DescriptorHandle(_currentHeap, _descriptorSize, cpuHandle));
}
private int BeginFrame()
{
// Bind the descriptor heaps
ID3D12DescriptorHeap[] heaps = new ID3D12DescriptorHeap[] { mpSrvUavHeap };
mpCmdList.SetDescriptorHeaps(1, heaps);
return(this.mpSwapChain.GetCurrentBackBufferIndex());
}
public void Dispose()
{
resource?.Dispose();
resource = null;
renderTargetView?.Dispose();
renderTargetView = null;
depthStencilView?.Dispose();
depthStencilView = null;
}
public DescriptorHandle(ID3D12DescriptorHeap heap, int sizeIncrement, CpuDescriptorHandle cpuHandle)
{
Heap = heap;
SizeIncrement = sizeIncrement;
CpuHandle = cpuHandle;
GpuHandle = new GpuDescriptorHandle
{
Ptr = InvalidAddress
};
}
private void CreateShaderResources()
{
HeapProperties heapProperties = new HeapProperties(HeapType.Default, CpuPageProperty.Unknown, MemoryPool.Unknown, 0, 0);
// Create the output resource. The dimensions and format should match the swap-chain
ResourceDescription resDesc = new ResourceDescription();
resDesc.Alignment = 0;
resDesc.DepthOrArraySize = 1;
resDesc.Dimension = ResourceDimension.Texture2D;
resDesc.Flags = ResourceFlags.AllowUnorderedAccess;
resDesc.Format = Format.R8G8B8A8_UNorm;
resDesc.Width = Window.Width;
resDesc.Height = Window.Height;
resDesc.Layout = TextureLayout.Unknown;
resDesc.MipLevels = 1;
resDesc.SampleDescription = new SampleDescription();
resDesc.SampleDescription.Count = 1;
outputResource = device.CreateCommittedResource(heapProperties, HeapFlags.None, resDesc, ResourceStates.CopySource, null);
// Create an SRV/UAV descriptor heap. Need 2 entries - 1 SRV for the scene and 1 UAV for the output
srvUavHeap = CreateDescriptorHeap(device, 2, DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView, true);
// Create the UAV. Based on the root signature we created it should be the first entry
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription();
uavDesc.ViewDimension = UnorderedAccessViewDimension.Texture2D;
device.CreateUnorderedAccessView(outputResource, null, uavDesc, srvUavHeap.GetCPUDescriptorHandleForHeapStart());
// Create the TLAS SRV right after the UAV. Note that we are using a different SRV desc here
ShaderResourceViewDescription srvDesc = new ShaderResourceViewDescription();
srvDesc.ViewDimension = ShaderResourceViewDimension.RaytracingAccelerationStructure;
srvDesc.Shader4ComponentMapping = 5768; // D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING
srvDesc.RaytracingAccelerationStructure = new RaytracingAccelerationStructureShaderResourceView();
srvDesc.RaytracingAccelerationStructure.Location = topLevelAS.GPUVirtualAddress;
CpuDescriptorHandle srvHandle = srvUavHeap.GetCPUDescriptorHandleForHeapStart();
srvHandle.Ptr += device.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
device.CreateShaderResourceView(null, srvDesc, srvHandle);
}
public void CreateShaderResources()
{
// Create the output resource. The dimensions and format should match the swap-chain
ResourceDescription resDesc = new ResourceDescription();
resDesc.DepthOrArraySize = 1;
resDesc.Dimension = ResourceDimension.Texture2D;
resDesc.Format = Format.R8G8B8A8_UNorm; // The backbuffer is actually DXGI_FORMAT_R8G8B8A8_UNORM_SRGB, but sRGB formats can't be used with UAVs. We will convert to sRGB ourselves in the shader
resDesc.Flags = ResourceFlags.AllowUnorderedAccess;
resDesc.Height = mSwapChainRect.Height;
resDesc.Layout = TextureLayout.Unknown;
resDesc.MipLevels = 1;
resDesc.SampleDescription = new SampleDescription(1, 0);
resDesc.Width = mSwapChainRect.Width;
mpOutputResource = mpDevice.CreateCommittedResource(AccelerationStructures.kDefaultHeapProps, HeapFlags.None, resDesc, ResourceStates.CopySource, null); // Starting as copy-source to simplify onFrameRender()
// Create an SRV/UAV descriptor heap. Need 2 entries - 1 SRV for the scene and 1 UAV for the output
mpSrvUavHeap = this.context.CreateDescriptorHeap(mpDevice, 2, DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView, true);
// Create the UAV. Based on the root signature we created it should be the first entry
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription();
uavDesc.ViewDimension = UnorderedAccessViewDimension.Texture2D;
mpDevice.CreateUnorderedAccessView(mpOutputResource, null, uavDesc, mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart());
// Create the TLAS SRV right after the UAV. Note that we are using a different SRV desc here
ShaderResourceViewDescription srvDesc = new ShaderResourceViewDescription();
srvDesc.ViewDimension = ShaderResourceViewDimension.RaytracingAccelerationStructure;
srvDesc.Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping;
srvDesc.RaytracingAccelerationStructure = new RaytracingAccelerationStructureShaderResourceView();
srvDesc.RaytracingAccelerationStructure.Location = mpTopLevelAS.GPUVirtualAddress;
CpuDescriptorHandle srvHandle = mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart();
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
mpDevice.CreateShaderResourceView(null, srvDesc, srvHandle);
}
internal CpuDescriptorHandle Allocate(int count)
{
if (currentHeap == null || remainingHandles < count)
{
DescriptorHeapDescription descriptorHeapDescription = new DescriptorHeapDescription()
{
Flags = DescriptorHeapFlags.None,
Type = DescriptorHeapType,
DescriptorCount = DescriptorPerHeap,
NodeMask = 1,
};
currentHeap = GraphicsDevice.NativeDevice.CreateDescriptorHeap <ID3D12DescriptorHeap>(descriptorHeapDescription);
remainingHandles = DescriptorPerHeap;
currentHandle = currentHeap.GetCPUDescriptorHandleForHeapStart();
}
CpuDescriptorHandle result = currentHandle;
currentHandle.Ptr += DescriptorSize;
remainingHandles -= count;
return(result);
}
public CpuDescriptorHandle CreateRTV(ID3D12Device5 pDevice, ID3D12Resource pResource, ID3D12DescriptorHeap pHeap, ref uint usedHeapEntries, Format format)
{
RenderTargetViewDescription desc = new RenderTargetViewDescription();
desc.ViewDimension = RenderTargetViewDimension.Texture2D;
desc.Format = format;
desc.Texture2D = new Texture2DRenderTargetView();
desc.Texture2D.MipSlice = 0;
CpuDescriptorHandle rtvHandle = pHeap.GetCPUDescriptorHandleForHeapStart();
rtvHandle.Ptr += usedHeapEntries * pDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.RenderTargetView);
usedHeapEntries++;
pDevice.CreateRenderTargetView(pResource, desc, rtvHandle);
return(rtvHandle);
}
private CpuDescriptorHandle CreateRenderTargetView(ID3D12Device device, ID3D12Resource swapChainBuffer, ID3D12DescriptorHeap heap,
ref uint usedEntries, Format format)
{
RenderTargetViewDescription viewDesc = new RenderTargetViewDescription();
viewDesc.ViewDimension = RenderTargetViewDimension.Texture2D;
viewDesc.Format = format;
viewDesc.Texture2D = new Texture2DRenderTargetView();
viewDesc.Texture2D.MipSlice = 0;
CpuDescriptorHandle handle = heap.GetCPUDescriptorHandleForHeapStart();
handle.Ptr += usedEntries * device.GetDescriptorHandleIncrementSize(DescriptorHeapType.RenderTargetView);
usedEntries++;
device.CreateRenderTargetView(swapChainBuffer, viewDesc, handle);
return(handle);
}
public void CreateShaderResources()
{
// Create the output resource. The dimensions and format should match the swap-chain
ResourceDescription resDesc = new ResourceDescription();
resDesc.DepthOrArraySize = 1;
resDesc.Dimension = ResourceDimension.Texture2D;
resDesc.Format = Format.R8G8B8A8_UNorm; // The backbuffer is actually DXGI_FORMAT_R8G8B8A8_UNORM_SRGB, but sRGB formats can't be used with UAVs. We will convert to sRGB ourselves in the shader
resDesc.Flags = ResourceFlags.AllowUnorderedAccess;
resDesc.Height = mSwapChainRect.Height;
resDesc.Layout = TextureLayout.Unknown;
resDesc.MipLevels = 1;
resDesc.SampleDescription = new SampleDescription(1, 0);
resDesc.Width = mSwapChainRect.Width;
mpOutputResource = mpDevice.CreateCommittedResource(AccelerationStructures.kDefaultHeapProps, HeapFlags.None, resDesc, ResourceStates.CopySource, null); // Starting as copy-source to simplify onFrameRender()
// Create an SRV/UAV/VertexSRV/IndexSRV descriptor heap. Need 5 entries - 1 SRV for the scene, 1 UAV for the output, 1 SRV for VertexBuffer, 1 SRV for IndexBuffer, 1 SceneContantBuffer, 1 primitiveConstantBuffer
mpSrvUavHeap = this.context.CreateDescriptorHeap(mpDevice, 6, DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView, true);
// Create the UAV. Based on the root signature we created it should be the first entry
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription();
uavDesc.ViewDimension = UnorderedAccessViewDimension.Texture2D;
mpDevice.CreateUnorderedAccessView(mpOutputResource, null, uavDesc, mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart());
// Create the TLAS SRV right after the UAV. Note that we are using a different SRV desc here
ShaderResourceViewDescription srvDesc = new ShaderResourceViewDescription();
srvDesc.ViewDimension = ShaderResourceViewDimension.RaytracingAccelerationStructure;
srvDesc.Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping;
srvDesc.RaytracingAccelerationStructure = new RaytracingAccelerationStructureShaderResourceView();
srvDesc.RaytracingAccelerationStructure.Location = mpTopLevelAS.GPUVirtualAddress;
CpuDescriptorHandle srvHandle = mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart();
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
mpDevice.CreateShaderResourceView(null, srvDesc, srvHandle);
// Index SRV
var indexSRVDesc = new ShaderResourceViewDescription()
{
ViewDimension = ShaderResourceViewDimension.Buffer,
Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping,
Format = Format.R32_Typeless,
Buffer =
{
NumElements = (int)(this.acs.IndexCount * 2 / 4),
Flags = BufferShaderResourceViewFlags.Raw,
StructureByteStride = 0,
}
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
indexSRVHandle = srvHandle;
mpDevice.CreateShaderResourceView(this.acs.IndexBuffer, indexSRVDesc, indexSRVHandle);
// Vertex SRV
var vertexSRVDesc = new ShaderResourceViewDescription()
{
ViewDimension = ShaderResourceViewDimension.Buffer,
Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping,
Format = Format.Unknown,
Buffer =
{
NumElements = (int)this.acs.VertexCount,
Flags = BufferShaderResourceViewFlags.None,
StructureByteStride = Unsafe.SizeOf <VertexPositionNormalTangentTexture>(),
}
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
vertexSRVHandle = srvHandle;
mpDevice.CreateShaderResourceView(this.acs.VertexBuffer, vertexSRVDesc, vertexSRVHandle);
// CB Scene
Vector3 cameraPosition = new Vector3(0, 1, -7);
Matrix4x4 view = Matrix4x4.CreateLookAt(cameraPosition, Vector3.Zero, Vector3.UnitY);
Matrix4x4 proj = Matrix4x4.CreatePerspectiveFieldOfView(MathHelper.PiOver4, (float)mSwapChainRect.Width / mSwapChainRect.Height, 0.1f, 1000f);
Matrix4x4 viewProj = Matrix4x4.Multiply(view, proj);
Matrix4x4.Invert(viewProj, out Matrix4x4 projectionToWorld);
SceneConstantBuffer sceneConstantBuffer = new SceneConstantBuffer()
{
projectionToWorld = Matrix4x4.Transpose(projectionToWorld),
cameraPosition = cameraPosition,
lightPosition = new Vector3(0.0f, 1.0f, -2.0f),
lightDiffuseColor = new Vector4(0.5f, 0.5f, 0.5f, 1.0f),
lightAmbientColor = new Vector4(0.1f, 0.1f, 0.1f, 1.0f),
backgroundColor = new Vector4(0.4f, 0.6f, 0.2f, 1.0f),
MaxRecursionDepth = 4,
};
sceneCB = this.acs.CreateBuffer(mpDevice, (uint)Unsafe.SizeOf <SceneConstantBuffer>(), ResourceFlags.None, ResourceStates.GenericRead, AccelerationStructures.kUploadHeapProps);
IntPtr pData;
pData = sceneCB.Map(0, null);
Helpers.MemCpy(pData, sceneConstantBuffer, (uint)Unsafe.SizeOf <SceneConstantBuffer>());
sceneCB.Unmap(0, null);
var sceneCBV = new ConstantBufferViewDescription()
{
BufferLocation = sceneCB.GPUVirtualAddress,
SizeInBytes = (Unsafe.SizeOf <SceneConstantBuffer>() + 255) & ~255,
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
sceneCBVHandle = srvHandle;
mpDevice.CreateConstantBufferView(sceneCBV, sceneCBVHandle);
// CB Primitive
PrimitiveConstantBuffer primitiveConstantBuffer = new PrimitiveConstantBuffer()
{
diffuseColor = new Vector4(0.8f, 0f, 0f, 1.0f),
inShadowRadiance = 0.35f,
diffuseCoef = 0.1f,
specularCoef = 0.7f,
specularPower = 50,
reflectanceCoef = 0.7f,
};
ID3D12Resource primitiveCB = this.acs.CreateBuffer(mpDevice, (uint)Unsafe.SizeOf <PrimitiveConstantBuffer>(), ResourceFlags.None, ResourceStates.GenericRead, AccelerationStructures.kUploadHeapProps);
IntPtr pData2;
pData2 = primitiveCB.Map(0, null);
Helpers.MemCpy(pData2, primitiveConstantBuffer, (uint)Unsafe.SizeOf <PrimitiveConstantBuffer>());
primitiveCB.Unmap(0, null);
var primitiveCBV = new ConstantBufferViewDescription()
{
BufferLocation = primitiveCB.GPUVirtualAddress,
SizeInBytes = (Unsafe.SizeOf <PrimitiveConstantBuffer>() + 255) & ~255,
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
var primitiveCBVHandle = srvHandle;
mpDevice.CreateConstantBufferView(primitiveCBV, primitiveCBVHandle);
}
public void Dispose()
{
currentHeap?.Dispose();
currentHeap = null;
}
public void Dispose()
{
heap?.Dispose();
heap = null;
}
public void CreateShaderResources()
{
// Create the output resource. The dimensions and format should match the swap-chain
ResourceDescription resDesc = new ResourceDescription();
resDesc.DepthOrArraySize = 1;
resDesc.Dimension = ResourceDimension.Texture2D;
resDesc.Format = Format.R8G8B8A8_UNorm; // The backbuffer is actually DXGI_FORMAT_R8G8B8A8_UNORM_SRGB, but sRGB formats can't be used with UAVs. We will convert to sRGB ourselves in the shader
resDesc.Flags = ResourceFlags.AllowUnorderedAccess;
resDesc.Height = mSwapChainRect.Height;
resDesc.Layout = TextureLayout.Unknown;
resDesc.MipLevels = 1;
resDesc.SampleDescription = new SampleDescription(1, 0);
resDesc.Width = mSwapChainRect.Width;
mpOutputResource = mpDevice.CreateCommittedResource(AccelerationStructures.kDefaultHeapProps, HeapFlags.None, resDesc, ResourceStates.CopySource, null); // Starting as copy-source to simplify onFrameRender()
// Create an SRV/UAV/VertexSRV/IndexSRV descriptor heap. Need 5 entries - 1 SRV for the scene, 1 UAV for the output, 1 SRV for VertexBuffer, 1 SRV for IndexBuffer, 1 SRV for texture
mpSrvUavHeap = this.context.CreateDescriptorHeap(mpDevice, 5, DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView, true);
// Create the UAV. Based on the root signature we created it should be the first entry
UnorderedAccessViewDescription uavDesc = new UnorderedAccessViewDescription();
uavDesc.ViewDimension = UnorderedAccessViewDimension.Texture2D;
mpDevice.CreateUnorderedAccessView(mpOutputResource, null, uavDesc, mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart());
// Create the TLAS SRV right after the UAV. Note that we are using a different SRV desc here
ShaderResourceViewDescription srvDesc = new ShaderResourceViewDescription();
srvDesc.ViewDimension = ShaderResourceViewDimension.RaytracingAccelerationStructure;
srvDesc.Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping;
srvDesc.RaytracingAccelerationStructure = new RaytracingAccelerationStructureShaderResourceView();
srvDesc.RaytracingAccelerationStructure.Location = mpTopLevelAS.GPUVirtualAddress;
CpuDescriptorHandle srvHandle = mpSrvUavHeap.GetCPUDescriptorHandleForHeapStart();
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
mpDevice.CreateShaderResourceView(null, srvDesc, srvHandle);
// Index SRV
var indexSRVDesc = new ShaderResourceViewDescription()
{
ViewDimension = ShaderResourceViewDimension.Buffer,
Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping,
Format = Format.R32_Typeless,
Buffer =
{
NumElements = (int)(this.acs.IndexCount * 2 / 4),
Flags = BufferShaderResourceViewFlags.Raw,
StructureByteStride = 0,
}
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
indexSRVHandle = srvHandle;
mpDevice.CreateShaderResourceView(this.acs.IndexBuffer, indexSRVDesc, indexSRVHandle);
// Vertex SRV
var vertexSRVDesc = new ShaderResourceViewDescription()
{
ViewDimension = ShaderResourceViewDimension.Buffer,
Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping,
Format = Format.Unknown,
Buffer =
{
NumElements = (int)this.acs.VertexCount,
Flags = BufferShaderResourceViewFlags.None,
StructureByteStride = Unsafe.SizeOf <VertexPositionNormalTangentTexture>(),
}
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
vertexSRVHandle = srvHandle;
mpDevice.CreateShaderResourceView(this.acs.VertexBuffer, vertexSRVDesc, vertexSRVHandle);
// Texture
var image = TextureHelper.Load("GLTF/Default_albedo.jpg");
var textureDesc = ResourceDescription.Texture2D(image.Format, (int)image.Width, (int)image.Height);
this.texture = this.mpDevice.CreateCommittedResource(new HeapProperties(HeapType.Default), HeapFlags.None, textureDesc, ResourceStates.CopyDestination);
// Create the GPU upload buffer.
var textureUploadHeap = mpDevice.CreateCommittedResource(new HeapProperties(CpuPageProperty.WriteBack, MemoryPool.L0), HeapFlags.None, textureDesc, ResourceStates.GenericRead);
// Copy data to the intermediate upload heap and then schedule a copy
// from the upload heap to the Texture2D.
byte[] textureData = image.Data;
var handle = GCHandle.Alloc(textureData, GCHandleType.Pinned);
var ptr = Marshal.UnsafeAddrOfPinnedArrayElement(textureData, 0);
textureUploadHeap.WriteToSubresource(0, null, ptr, (int)(image.TexturePixelSize * image.Width), textureData.Length);
handle.Free();
mpCmdList.CopyTextureRegion(new TextureCopyLocation(texture, 0), 0, 0, 0, new TextureCopyLocation(textureUploadHeap, 0), null);
mpCmdList.ResourceBarrierTransition(this.texture, ResourceStates.CopyDestination, ResourceStates.PixelShaderResource);
// Describe and create a SRV for the texture.
var textureSRVDesc = new ShaderResourceViewDescription
{
Shader4ComponentMapping = D3D12DefaultShader4ComponentMapping,
Format = textureDesc.Format,
ViewDimension = ShaderResourceViewDimension.Texture2D,
Texture2D = { MipLevels = 1 },
};
srvHandle.Ptr += mpDevice.GetDescriptorHandleIncrementSize(DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView);
textureSRVHandle = srvHandle;
this.mpDevice.CreateShaderResourceView(this.texture, textureSRVDesc, textureSRVHandle);
}
protected Application(bool useDirect3D12)
{
_wndProc = ProcessWindowMessage;
var wndClassEx = new WNDCLASSEX
{
Size = Unsafe.SizeOf <WNDCLASSEX>(),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW | WindowClassStyles.CS_OWNDC,
WindowProc = _wndProc,
InstanceHandle = HInstance,
CursorHandle = LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
BackgroundBrushHandle = IntPtr.Zero,
IconHandle = IntPtr.Zero,
ClassName = WndClassName,
};
var atom = RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new InvalidOperationException(
$"Failed to register window class. Error: {Marshal.GetLastWin32Error()}"
);
}
Window = new Window("Vortice", 800, 600);
if (useDirect3D12 &&
!ID3D12Device.IsSupported(null, FeatureLevel.Level_11_0))
{
useDirect3D12 = false;
}
var debugFactory = false;
#if DEBUG
if (useDirect3D12)
{
if (D3D12GetDebugInterface <ID3D12Debug>(out var debug).Success)
{
debug.EnableDebugLayer();
debugFactory = true;
}
}
#endif
if (useDirect3D12)
{
if (CreateDXGIFactory2(debugFactory, out IDXGIFactory4 dxgiFactory4).Failure)
{
throw new InvalidOperationException("Cannot create IDXGIFactory4");
}
_dxgiFactory = dxgiFactory4;
}
else
{
if (CreateDXGIFactory2(debugFactory, out _dxgiFactory).Failure)
{
throw new InvalidOperationException("Cannot create IDXGIFactory4");
}
}
if (useDirect3D12)
{
Debug.Assert(D3D12CreateDevice(null, FeatureLevel.Level_11_0, out _d3d12Device).Success);
_d3d12CommandQueue = _d3d12Device.CreateCommandQueue(new CommandQueueDescription(CommandListType.Direct, CommandQueuePriority.Normal));
}
else
{
var featureLevels = new FeatureLevel[]
{
FeatureLevel.Level_11_1,
FeatureLevel.Level_11_0
};
Debug.Assert(ID3D11Device.TryCreate(
null,
DriverType.Hardware,
DeviceCreationFlags.BgraSupport,
featureLevels,
out _d3d11Device,
out _d3d11DeviceContext).Success);
}
var swapChainDesc = new SwapChainDescription1
{
BufferCount = FrameCount,
Width = Window.Width,
Height = Window.Height,
Format = Format.B8G8R8A8_UNorm,
Usage = Vortice.Usage.RenderTargetOutput,
SwapEffect = SwapEffect.FlipDiscard,
SampleDescription = new SampleDescription(1, 0)
};
SwapChain = DXGIFactory.CreateSwapChainForHwnd(_d3d12CommandQueue, Window.Handle, swapChainDesc);
DXGIFactory.MakeWindowAssociation(Window.Handle, WindowAssociationFlags.IgnoreAltEnter);
if (useDirect3D12)
{
SwapChain3 = SwapChain.QueryInterface <IDXGISwapChain3>();
_frameIndex = SwapChain3.GetCurrentBackBufferIndex();
}
_rtvHeap = _d3d12Device.CreateDescriptorHeap(new DescriptorHeapDescription(DescriptorHeapType.RenderTargetView, FrameCount));
_rtvDescriptorSize = _d3d12Device.GetDescriptorHandleIncrementSize(DescriptorHeapType.RenderTargetView);
// Create frame resources.
{
var rtvHandle = _rtvHeap.GetCPUDescriptorHandleForHeapStart();
// Create a RTV for each frame.
_renderTargets = new ID3D12Resource[FrameCount];
for (var i = 0; i < FrameCount; i++)
{
_renderTargets[i] = SwapChain.GetBuffer <ID3D12Resource>(i);
_d3d12Device.CreateRenderTargetView(_renderTargets[i], null, rtvHandle);
rtvHandle += _rtvDescriptorSize;
}
}
_commandAllocator = _d3d12Device.CreateCommandAllocator(CommandListType.Direct);
_commandList = _d3d12Device.CreateCommandList(CommandListType.Direct, _commandAllocator);
_commandList.Close();
// Create synchronization objects.
_d3d12Fence = _d3d12Device.CreateFence(0);
_fenceValue = 1;
_fenceEvent = new AutoResetEvent(false);
}
