protected override void CreateDeviceDependentResources()
{
_dxgiFactory = CreateDxgiFactory();
_dxgiAdapter = GetDxgiAdapter();
_d3dDevice = CreateD3DDevice(out _immediateContext);
CreateAssets();
ID3D11Device *CreateD3DDevice(out ID3D11DeviceContext *pImmediateContext)
{
ID3D11Device * d3dDevice;
ID3D11DeviceContext *immediateContext;
var featureLevel = D3D_FEATURE_LEVEL_11_0;
ThrowIfFailed(D3D11CreateDevice((IDXGIAdapter *)DxgiAdapter, D3D_DRIVER_TYPE_HARDWARE, Software: HMODULE.NULL, Flags: 0, &featureLevel, FeatureLevels: 1, D3D11_SDK_VERSION, &d3dDevice, pFeatureLevel: null, &immediateContext));
pImmediateContext = immediateContext;
return(d3dDevice);
}
IDXGIFactory1 *CreateDxgiFactory()
{
IDXGIFactory1 *dxgiFactory;
ThrowIfFailed(CreateDXGIFactory1(__uuidof <IDXGIFactory1>(), (void **)&dxgiFactory));
return(dxgiFactory);
}
IDXGIAdapter1 *GetDxgiAdapter()
{
return(UseWarpDevice ? throw new NotImplementedException("WARP Device not supported for D3D11.") : GetHardwareAdapter(_dxgiFactory));
}
}
// Helper function for acquiring the first available hardware adapter that supports the required Direct3D version.
// If no such adapter can be found, returns null.
protected IDXGIAdapter1 *GetHardwareAdapter(IDXGIFactory1 *pFactory)
{
IDXGIAdapter1 *adapter;
for (var adapterIndex = 0u; DXGI_ERROR_NOT_FOUND != pFactory->EnumAdapters1(adapterIndex, &adapter); ++adapterIndex)
{
DXGI_ADAPTER_DESC1 desc;
_ = adapter->GetDesc1(&desc);
if ((desc.Flags & (uint)DXGI_ADAPTER_FLAG_SOFTWARE) != 0)
{
// Don't select the Basic Render Driver adapter.
// If you want a software adapter, pass in "/warp" on the command line.
continue;
}
// Check to see if the adapter supports the required Direct3D version, but don't create the
// actual device yet.
if (SupportsRequiredDirect3DVersion(adapter))
{
break;
}
}
return(adapter);
}
// Helper function for acquiring the first available hardware adapter that supports the required Direct3D version.
// If no such adapter can be found, returns null.
protected IDXGIAdapter1 *GetHardwareAdapter(IDXGIFactory1 *pFactory)
{
IDXGIAdapter1 *adapter;
// TODO DXGI_ERROR_NOT_FOUND is 0x887A0002 - maybe we should add Winerror.h somewhere in Silk.NET.Core?
const int errorNotFound = unchecked ((int)0x887A0002);
for (var adapterIndex = 0u;
errorNotFound != pFactory->EnumAdapters1(adapterIndex, &adapter);
++adapterIndex)
{
AdapterDesc1 desc;
_ = adapter->GetDesc1(&desc);
if ((desc.Flags & (uint)AdapterFlag.AdapterFlagSoftware) != 0)
{
// Don't select the Basic Render Driver adapter.
// If you want a software adapter, pass in "/warp" on the command line.
continue;
}
// Check to see if the adapter supports the required Direct3D version, but don't create the
// actual device yet.
if (SupportsRequiredDirect3DVersion(adapter))
{
break;
}
}
return(adapter);
}
protected override void DestroyDeviceDependentResources()
{
DestroyAssets();
DestroyImmediateContext();
DestroyD3DDevice();
DestroyDxgiAdapter();
DestroyDxgiFactory();
void DestroyD3DDevice()
{
var d3dDevice = _d3dDevice;
if (d3dDevice != null)
{
_d3dDevice = null;
_ = d3dDevice->Release();
}
}
void DestroyDxgiAdapter()
{
var dxgiAdapter = _dxgiAdapter;
if (dxgiAdapter != null)
{
_dxgiAdapter = null;
_ = dxgiAdapter->Release();
}
}
void DestroyDxgiFactory()
{
var dxgiFactory = _dxgiFactory;
if (dxgiFactory != null)
{
_dxgiFactory = null;
_ = dxgiFactory->Release();
}
}
void DestroyImmediateContext()
{
var immediateContext = _immediateContext;
if (immediateContext != null)
{
_immediateContext = null;
_ = immediateContext->Release();
}
}
}
public override void OnInit()
{
Guid iid;
IDXGIFactory1 * factory = null;
IDXGIAdapter * adapter = null;
ID3D11Texture2D *backBuffer = 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);
}
finally
{
if (backBuffer != null)
{
_ = backBuffer->Release();
}
if (adapter != null)
{
_ = adapter->Release();
}
if (factory != null)
{
_ = factory->Release();
}
}
}
public static SystemParameters Create()
{
var(width, height, _) = GetDisplays().First(d => d.IsPrimary);
/*using var f = new SharpDX.DXGI.Factory1();
* var video_memory = f.Adapters1.Select(a =>
* Math.Max(a.Description.DedicatedSystemMemory, (long)a.Description.DedicatedVideoMemory)).Max();*/
var dxgiMemory = 0UL;
unsafe
{
using var api = DXGI.GetApi();
IDXGIFactory1 *factory1 = default;
try
{
//https://docs.microsoft.com/en-us/windows/win32/api/dxgi/nf-dxgi-createdxgifactory1
SilkMarshal.ThrowHResult(api.CreateDXGIFactory1(SilkMarshal.GuidPtrOf <IDXGIFactory1>(), (void **)&factory1));
uint i = 0u;
while (true)
{
IDXGIAdapter1 *adapter1 = default;
//https://docs.microsoft.com/en-us/windows/win32/api/dxgi/nf-dxgi-idxgifactory1-enumadapters1
var res = factory1->EnumAdapters1(i, &adapter1);
var exception = Marshal.GetExceptionForHR(res);
if (exception != null)
{
break;
}
AdapterDesc1 adapterDesc = default;
//https://docs.microsoft.com/en-us/windows/win32/api/dxgi/nf-dxgi-idxgiadapter1-getdesc1
SilkMarshal.ThrowHResult(adapter1->GetDesc1(&adapterDesc));
var systemMemory = (ulong)adapterDesc.DedicatedSystemMemory;
var videoMemory = (ulong)adapterDesc.DedicatedVideoMemory;
var maxMemory = Math.Max(systemMemory, videoMemory);
if (maxMemory > dxgiMemory)
{
dxgiMemory = maxMemory;
}
adapter1->Release();
i++;
}
}
catch (Exception e)
{
Utils.ErrorThrow(e);
}
finally
{
if (factory1->LpVtbl != (void **)IntPtr.Zero)
{
factory1->Release();
}
}
}
var memory = Utils.GetMemoryStatus();
return(new SystemParameters
{
ScreenWidth = width,
ScreenHeight = height,
VideoMemorySize = (long)dxgiMemory,
SystemMemorySize = (long)memory.ullTotalPhys,
SystemPageSize = (long)memory.ullTotalPageFile - (long)memory.ullTotalPhys
});
}
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();
}
}
}
