private void LoadAssets()
{
// Create an empty root signature.
var rootSignatureDesc = new RootSignatureDescription(RootSignatureFlags.AllowInputAssemblerInputLayout);
rootSignature = device.CreateRootSignature(rootSignatureDesc.Serialize());
// Create the pipeline state, which includes compiling and loading shaders.
#if DEBUG
var vertexShader = new ShaderBytecode(SharpDX.D3DCompiler.ShaderBytecode.Compile(SharpDX.IO.NativeFile.ReadAllText("shaders.hlsl"), "VSMain", "vs_5_0", SharpDX.D3DCompiler.ShaderFlags.Debug));
#else
var vertexShader = new ShaderBytecode(SharpDX.D3DCompiler.ShaderBytecode.CompileFromFile("shaders.hlsl", "VSMain", "vs_5_0"));
#endif
#if DEBUG
var pixelShader = new ShaderBytecode(SharpDX.D3DCompiler.ShaderBytecode.Compile(SharpDX.IO.NativeFile.ReadAllText("shaders.hlsl"), "PSMain", "ps_5_0", SharpDX.D3DCompiler.ShaderFlags.Debug));
#else
var pixelShader = new ShaderBytecode(SharpDX.D3DCompiler.ShaderBytecode.CompileFromFile("shaders.hlsl", "PSMain", "ps_5_0"));
#endif
// Define the vertex input layout.
var inputElementDescs = new []
{
new InputElement("POSITION",0,Format.R32G32B32_Float,0,0),
new InputElement("COLOR",0,Format.R32G32B32A32_Float,12,0)
};
// Describe and create the graphics pipeline state object (PSO).
var psoDesc = new GraphicsPipelineStateDescription()
{
InputLayout = new InputLayoutDescription(inputElementDescs),
RootSignature = rootSignature,
VertexShader = vertexShader,
PixelShader = pixelShader,
RasterizerState = RasterizerStateDescription.Default(),
BlendState = BlendStateDescription.Default(),
DepthStencilFormat = SharpDX.DXGI.Format.D32_Float,
DepthStencilState = new DepthStencilStateDescription() { IsDepthEnabled = false, IsStencilEnabled = false },
SampleMask = int.MaxValue,
PrimitiveTopologyType = PrimitiveTopologyType.Triangle,
RenderTargetCount = 1,
Flags = PipelineStateFlags.None,
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
StreamOutput = new StreamOutputDescription()
};
psoDesc.RenderTargetFormats[0] = SharpDX.DXGI.Format.R8G8B8A8_UNorm;
pipelineState = device.CreateGraphicsPipelineState(psoDesc);
// Create the command list.
commandList = device.CreateCommandList(CommandListType.Direct, commandAllocator, pipelineState);
// 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.
commandList.Close();
// Create the vertex buffer.
float aspectRatio = viewport.Width / viewport.Height;
// Define the geometry for a triangle.
var triangleVertices = new []
{
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 ) },
};
int vertexBufferSize = Utilities.SizeOf(triangleVertices);
// 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.
vertexBuffer = device.CreateCommittedResource(new HeapProperties(HeapType.Upload), HeapFlags.None, ResourceDescription.Buffer(vertexBufferSize), ResourceStates.GenericRead);
// Copy the triangle data to the vertex buffer.
IntPtr pVertexDataBegin = vertexBuffer.Map(0);
Utilities.Write(pVertexDataBegin, triangleVertices, 0, triangleVertices.Length);
vertexBuffer.Unmap(0);
// Initialize the vertex buffer view.
vertexBufferView = new VertexBufferView();
vertexBufferView.BufferLocation = vertexBuffer.GPUVirtualAddress;
vertexBufferView.StrideInBytes = Utilities.SizeOf<Vertex>();
vertexBufferView.SizeInBytes = vertexBufferSize;
// Create and record the bundle.
bundle = device.CreateCommandList(0, CommandListType.Bundle, bundleAllocator, pipelineState);
bundle.SetGraphicsRootSignature(rootSignature);
bundle.PrimitiveTopology = SharpDX.Direct3D.PrimitiveTopology.TriangleList;
bundle.SetVertexBuffer(0, vertexBufferView);
bundle.DrawInstanced(3, 1, 0, 0);
bundle.Close();
// Create synchronization objects.
{
fence = device.CreateFence(0, FenceFlags.None);
fenceValue = 1;
// Create an event handle to use for frame synchronization.
fenceEvent = new AutoResetEvent(false);
}
}
