public void Setup(ID3D11Device device, ID3D11DeviceContext context)
{
if (!m_vertexAttributes.Any())
{
return;
}
if (!m_inputLayout)
{
var hr = device.CreateVertexShader(m_vs_blob.GetBufferPointer(), m_vs_blob.GetBufferSize(), null, out m_vs);
hr.ThrowIfFailed();
hr = device.CreatePixelShader(m_ps_blob.GetBufferPointer(), m_ps_blob.GetBufferSize(), null, out m_ps);
hr.ThrowIfFailed();
hr = device.CreateInputLayout(ref m_layout[0], (uint)m_layout.Length,
m_vs_blob.GetBufferPointer(), m_vs_blob.GetBufferSize(), out m_inputLayout);
hr.ThrowIfFailed();
}
// setup shader pipeline
Span <IntPtr> classes = stackalloc IntPtr[] { };
context.VSSetShader(m_vs, ref MemoryMarshal.GetReference(classes), (uint)classes.Length);
context.PSSetShader(m_ps, ref MemoryMarshal.GetReference(classes), (uint)classes.Length);
context.IASetInputLayout(m_inputLayout);
}
void SetupRenderState(ImDrawDataPtr drawData, ID3D11DeviceContext ctx)
{
var viewport = new Viewport
{
Width = drawData.DisplaySize.X,
Height = drawData.DisplaySize.Y,
MinDepth = 0.0f,
MaxDepth = 1.0f,
};
ctx.RSSetViewports(viewport);
int stride = sizeof(ImDrawVert);
int offset = 0;
ctx.IASetInputLayout(inputLayout);
ctx.IASetVertexBuffers(0, 1, new[] { vertexBuffer }, new[] { stride }, new[] { offset });
ctx.IASetIndexBuffer(indexBuffer, sizeof(ImDrawIdx) == 2 ? Format.R16_UInt : Format.R32_UInt, 0);
ctx.IASetPrimitiveTopology(PrimitiveTopology.TriangleList);
ctx.VSSetShader(vertexShader);
ctx.VSSetConstantBuffers(0, constantBuffer);
ctx.PSSetShader(pixelShader);
ctx.PSSetSamplers(0, fontSampler);
ctx.GSSetShader(null);
ctx.HSSetShader(null);
ctx.DSSetShader(null);
ctx.CSSetShader(null);
ctx.OMSetBlendState(blendState);
ctx.OMSetDepthStencilState(depthStencilState);
ctx.RSSetState(rasterizerState);
}
public virtual void Render(ID3D11DeviceContext context, PrimitiveTopology type, int size, uint offset)
{
context.IASetInputLayout(Layout);
// set shaders only if available
if (OurVertexShader != null)
{
context.VSSetShader(OurVertexShader);
}
if (OurVertexShader != null)
{
context.PSSetShader(OurPixelShader);
context.PSSetSampler(0, SamplerState);
}
if (OurVertexShader != null)
{
context.GSSetShader(OurGeometryShader);
}
context.DrawIndexed(size, (int)offset, 0);
Profiler.NumDrawCallsThisFrame++;
}
public static void PSSetShader(this ID3D11DeviceContext context, ID3D11PixelShader pixelShader, ID3D11ClassInstance[] classInstances = null)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (pixelShader == null)
{
throw new ArgumentNullException(nameof(pixelShader));
}
context.PSSetShader(pixelShader, classInstances, (classInstances?.Length).GetValueOrDefault());
}
public override void Render(ID3D11DeviceContext deviceContext, PrimitiveTopology type, int size, uint offset)
{
deviceContext.IASetInputLayout(Layout);
deviceContext.VSSetShader(OurVertexShader);
deviceContext.PSSetShader(OurPixelShader);
switch (type)
{
case PrimitiveTopology.LineList:
case PrimitiveTopology.TriangleList:
deviceContext.DrawIndexed(size, (int)offset, 0);
break;
case PrimitiveTopology.LineStrip:
deviceContext.Draw(size, 0);
break;
default:
break;
}
Profiler.NumDrawCallsThisFrame++;
}
protected override void SetPipelineStateImpl(PipelineState pipelineState)
{
var pipelineStateD3D11 = (PipelineStateD3D11)pipelineState;
if (pipelineState.IsCompute)
{
var computeShader = pipelineStateD3D11.ComputeShader;
D3D11Context.CSSetShader(computeShader);
}
else
{
var blendState = pipelineStateD3D11.BlendState;
if (_boundBlendState != blendState)
{
_boundBlendState = blendState;
D3D11Context.OMSetBlendState(blendState, _boundBlendColor);
}
var depthStencilState = pipelineStateD3D11.DepthStencilState;
if (_boundDepthStencilState != depthStencilState)
{
_boundDepthStencilState = depthStencilState;
D3D11Context.OMSetDepthStencilState(depthStencilState, _boundStencilReference);
}
var rasterizerState = pipelineStateD3D11.RasterizerState;
if (_boundRasterizerState != rasterizerState)
{
_boundRasterizerState = rasterizerState;
D3D11Context.RSSetState(rasterizerState);
}
var primitiveTopology = pipelineStateD3D11.PrimitiveTopology;
if (_boundPrimitiveTopology != primitiveTopology)
{
_boundPrimitiveTopology = primitiveTopology;
D3D11Context.IASetPrimitiveTopology(primitiveTopology);
}
var inputLayout = pipelineStateD3D11.InputLayout;
if (_boundInputLayout != inputLayout)
{
_boundInputLayout = inputLayout;
D3D11Context.IASetInputLayout(_boundInputLayout);
}
var vertexShader = pipelineStateD3D11.VertexShader;
if (_boundVertexShader != vertexShader)
{
_boundVertexShader = vertexShader;
D3D11Context.VSSetShader(vertexShader);
}
var geometryShader = pipelineStateD3D11.GeometryShader;
if (_boundGeometryShader != geometryShader)
{
_boundGeometryShader = geometryShader;
D3D11Context.GSSetShader(geometryShader);
}
var hullShader = pipelineStateD3D11.HullShader;
if (_boundHullShader != hullShader)
{
_boundHullShader = hullShader;
D3D11Context.HSSetShader(hullShader);
}
var domainShader = pipelineStateD3D11.DomainShader;
if (_boundDomainShader != domainShader)
{
_boundDomainShader = domainShader;
D3D11Context.DSSetShader(domainShader);
}
var pixelShader = pipelineStateD3D11.PixelShader;
if (_boundPixelShader != pixelShader)
{
_boundPixelShader = pixelShader;
D3D11Context.PSSetShader(pixelShader);
}
}
}
static void Main()
{
ReferenceTracker.TrackReferences = true;
Form form = new Form();
IDXGIFactory factory = DXGI.CreateFactory();
IDXGIAdapter adapter = null;
factory.EnumAdapters(0, out adapter);
DXGI_SWAP_CHAIN_DESC swapChainDescription = new DXGI_SWAP_CHAIN_DESC
{
BufferCount = 1,
BufferDesc = new DXGI_MODE_DESC
{
Format = DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM,
Height = form.ClientSize.Height,
RefreshRate = new DXGI_RATIONAL
{
Denominator = 1,
Numerator = 60
},
Scaling = DXGI_MODE_SCALING.DXGI_MODE_SCALING_UNSPECIFIED,
ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER.DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED,
Width = form.ClientSize.Width
},
BufferUsage = (int)DXGI_USAGE.DXGI_USAGE_RENDER_TARGET_OUTPUT,
Flags = 0,
OutputWindow = form.Handle,
SampleDesc = new DXGI_SAMPLE_DESC
{
Count = 1,
Quality = 0
},
SwapEffect = DXGI_SWAP_EFFECT.DXGI_SWAP_EFFECT_DISCARD,
Windowed = true
};
ID3D11Device device = SlimDX.Direct3D11.Direct3D11.CreateDevice(adapter);
IDXGISwapChain swapChain = null;
factory.CreateSwapChain(device, swapChainDescription, out swapChain);
ID3D11Texture2D backbuffer = swapChain.GetBuffer <ID3D11Texture2D>(0);
ID3D11RenderTargetView view = null;
device.CreateRenderTargetView(backbuffer, null, out view);
ID3DBlob vertexShaderBytecode = ShaderCompiler.CompileFromString(File.ReadAllText("MiniTri11.fx"), "MiniTri11.fx", "VS", "vs_4_0");
ID3DBlob pixelShaderBytecode = ShaderCompiler.CompileFromString(File.ReadAllText("MiniTri11.fx"), "MiniTri11.fx", "PS", "ps_4_0");
D3D11_INPUT_ELEMENT_DESC[] inputElements = new[] {
new D3D11_INPUT_ELEMENT_DESC {
SemanticName = "POSITION", AlignedByteOffset = 0, SemanticIndex = 0, Format = DXGI_FORMAT.DXGI_FORMAT_R32G32B32A32_FLOAT, InstanceDataStepRate = 0, InputSlot = 0, InputSlotClass = D3D11_INPUT_CLASSIFICATION.D3D11_INPUT_PER_VERTEX_DATA
},
new D3D11_INPUT_ELEMENT_DESC {
SemanticName = "COLOR", AlignedByteOffset = 16, SemanticIndex = 0, Format = DXGI_FORMAT.DXGI_FORMAT_R32G32B32A32_FLOAT, InstanceDataStepRate = 0, InputSlot = 0, InputSlotClass = D3D11_INPUT_CLASSIFICATION.D3D11_INPUT_PER_VERTEX_DATA
}
};
ID3DBlob inputSignature;
ShaderCompiler.D3DGetInputSignatureBlob(vertexShaderBytecode.GetBufferPointer(), vertexShaderBytecode.GetBufferSize(), out inputSignature);
ID3D11InputLayout inputLayout;
device.CreateInputLayout(inputElements, inputElements.Length, inputSignature.GetBufferPointer(), inputSignature.GetBufferSize(), out inputLayout);
ByteBuffer vertexData = new ByteBuffer(3 * 32);
vertexData.Write(0 * Vector4.SizeInBytes, new Vector4(0.0f, 0.5f, 0.5f, 1.0f));
vertexData.Write(1 * Vector4.SizeInBytes, new Vector4(1.0f, 0.0f, 0.0f, 1.0f));
vertexData.Write(2 * Vector4.SizeInBytes, new Vector4(0.5f, -0.5f, 0.5f, 1.0f));
vertexData.Write(3 * Vector4.SizeInBytes, new Vector4(0.0f, 1.0f, 0.0f, 1.0f));
vertexData.Write(4 * Vector4.SizeInBytes, new Vector4(-0.5f, -0.5f, 0.5f, 1.0f));
vertexData.Write(5 * Vector4.SizeInBytes, new Vector4(0.0f, 0.0f, 1.0f, 1.0f));
D3D11_BUFFER_DESC vertexBufferDescription = new D3D11_BUFFER_DESC
{
BindFlags = 1, //vertex buffer
ByteWidth = 3 * 32,
CPUAccessFlags = 0,
MiscFlags = 0,
Usage = D3D11_USAGE.D3D11_USAGE_DEFAULT,
StructureByteStride = 0
};
ID3D11Buffer vertexBuffer;
D3D11_SUBRESOURCE_DATA srd = new D3D11_SUBRESOURCE_DATA
{
pSysMem = vertexData.Pin(),
SysMemPitch = 0,
SysMemSlicePitch = 0
};
device.CreateBuffer(vertexBufferDescription, srd, out vertexBuffer);
vertexData.Unpin();
RenderLoop loop = new RenderLoop();
ID3D11DeviceContext context = null;
device.GetImmediateContext(out context);
ID3D11VertexShader vertexShader;
ID3D11PixelShader pixelShader;
device.CreateVertexShader(vertexShaderBytecode.GetBufferPointer(), vertexShaderBytecode.GetBufferSize(), null, out vertexShader);
device.CreatePixelShader(pixelShaderBytecode.GetBufferPointer(), pixelShaderBytecode.GetBufferSize(), null, out pixelShader);
context.IASetInputLayout(inputLayout);
context.VSSetShader(vertexShader, null, 0);
context.PSSetShader(pixelShader, null, 0);
context.IASetPrimitiveTopology(4); //triangle list
context.IASetVertexBuffers(0, 1, new ID3D11Buffer[] { vertexBuffer }, new int[] { 32 }, new int[] { 0 });
context.OMSetRenderTargets(1, new ID3D11RenderTargetView[] { view }, IntPtr.Zero);
D3D11_VIEWPORT vp = new D3D11_VIEWPORT {
Height = form.ClientSize.Height,
Width = form.ClientSize.Width,
TopLeftX = 0,
TopLeftY = 0,
MinDepth = 0.0f,
MaxDepth = 1.0f
};
context.RSSetViewports(1, new D3D11_VIEWPORT [] { vp });
loop.Run(form, () =>
{
var clearColor = new SlimDX.Color4 {
R = 0.0f, G = 0.0f, B = 0.0f, A = 1.0f
};
context.ClearRenderTargetView(view, clearColor);
context.Draw(3, 0);
swapChain.Present(0, 0);
});
view.ReleaseReference();
backbuffer.ReleaseReference();
swapChain.ReleaseReference();
device.ReleaseReference();
adapter.ReleaseReference();
factory.ReleaseReference();
}