// Render the scene. void D3D12HelloConstBuffers::OnRender() { // Record all the commands we need to render the scene into the command list. PopulateCommandList(); // Execute the command list. ID3D12CommandList* ppCommandLists[] = { m_commandList.Get() }; m_commandQueue->ExecuteCommandLists(_countof(ppCommandLists), ppCommandLists); // Present the frame. ThrowIfFailed(m_swapChain->Present(1, 0)); WaitForPreviousFrame(); }
void DeviceManDX12::BeginScene() { WaitForPreviousFrame(); commandAllocator->Reset(); commandList->Reset(commandAllocator.Get(), nullptr); frameIndex = deviceMan.GetSwapChain()->GetCurrentBackBufferIndex(); D3D12_RESOURCE_BARRIER barrier = { D3D12_RESOURCE_BARRIER_TYPE_TRANSITION, D3D12_RESOURCE_BARRIER_FLAG_NONE,{ deviceMan.GetRenderTarget().Get(), 0, D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET } }; commandList->ResourceBarrier(1, &barrier); DXGI_SWAP_CHAIN_DESC desc; deviceMan.GetSwapChain()->GetDesc(&desc); D3D12_VIEWPORT vp = {0.f, 0.f, (float)desc.BufferDesc.Width, (float)desc.BufferDesc.Height, 0.f, 1.f}; D3D12_RECT rc = {0, 0, (LONG)desc.BufferDesc.Width, (LONG)desc.BufferDesc.Height}; commandList->RSSetViewports(1, &vp); commandList->RSSetScissorRects(1, &rc); SetRenderTarget(); }
void DeviceManDX12::Destroy() { if (fenceEvent != INVALID_HANDLE_VALUE) { WaitForPreviousFrame(); CloseHandle(fenceEvent); fenceEvent = INVALID_HANDLE_VALUE; } commandList.Reset(); commandAllocator.Reset(); commandQueue.Reset(); swapChain.Reset(); for (int i = 0; i < numFrameBuffers; i++) { renderTargets[i].Reset(); } rtvHeap.Reset(); factory.Reset(); fence.Reset(); fenceValue = 1; frameIndex = 0; device.Reset(); }
void RenderSysem::LoadAssets() { // Create the command list. ThrowIfFailed(m_pD3D12Device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_pCommandAllocator.Get(), nullptr, IID_PPV_ARGS(&m_pCommandList))); // 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(m_pCommandList->Close()); // Create and record the bundle. { auto pPipelineState = m_Triangle.GetPipelineState(); ThrowIfFailed(m_pD3D12Device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_BUNDLE, m_pBundleAllocator.Get(), pPipelineState.Get(), IID_PPV_ARGS(&m_pBundleList))); m_Triangle.Render(m_pBundleList); ThrowIfFailed(m_pBundleList->Close()); } // Create synchronization objects. { ThrowIfFailed(m_pD3D12Device->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_pD3D12Fence))); m_FenceValue = 1; // Create an event handle to use for frame synchronization. m_FenceEvent = CreateEventEx(nullptr, FALSE, FALSE, EVENT_ALL_ACCESS); if (m_FenceEvent == nullptr) { ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError())); } // 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(); } }
// Load the sample assets. void D3D12HelloTexture::LoadAssets() { // Create the root signature. { CD3DX12_DESCRIPTOR_RANGE ranges[1]; ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0); CD3DX12_ROOT_PARAMETER rootParameters[1]; rootParameters[0].InitAsDescriptorTable(1, &ranges[0], D3D12_SHADER_VISIBILITY_PIXEL); D3D12_STATIC_SAMPLER_DESC sampler = {}; sampler.Filter = D3D12_FILTER_MIN_MAG_MIP_POINT; sampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_BORDER; sampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_BORDER; sampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_BORDER; sampler.MipLODBias = 0; sampler.MaxAnisotropy = 0; sampler.ComparisonFunc = D3D12_COMPARISON_FUNC_NEVER; sampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK; sampler.MinLOD = 0.0f; sampler.MaxLOD = D3D12_FLOAT32_MAX; sampler.ShaderRegister = 0; sampler.RegisterSpace = 0; sampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL; CD3DX12_ROOT_SIGNATURE_DESC rootSignatureDesc; rootSignatureDesc.Init(_countof(rootParameters), rootParameters, 1, &sampler, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT); ComPtr<ID3DBlob> signature; ComPtr<ID3DBlob> error; ThrowIfFailed(D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error)); ThrowIfFailed(m_device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature))); } // Create the pipeline state, which includes compiling and loading shaders. { ComPtr<ID3DBlob> vertexShader; ComPtr<ID3DBlob> pixelShader; #ifdef _DEBUG // Enable better shader debugging with the graphics debugging tools. UINT compileFlags = D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION; #else UINT compileFlags = 0; #endif ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "VSMain", "vs_5_0", compileFlags, 0, &vertexShader, nullptr)); ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "PSMain", "ps_5_0", compileFlags, 0, &pixelShader, nullptr)); // Define the vertex input layout. D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = { { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }, { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 } }; // Describe and create the graphics pipeline state object (PSO). D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {}; psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) }; psoDesc.pRootSignature = m_rootSignature.Get(); psoDesc.VS = { reinterpret_cast<UINT8*>(vertexShader->GetBufferPointer()), vertexShader->GetBufferSize() }; psoDesc.PS = { reinterpret_cast<UINT8*>(pixelShader->GetBufferPointer()), pixelShader->GetBufferSize() }; psoDesc.RasterizerState = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT); psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT); psoDesc.DepthStencilState.DepthEnable = FALSE; psoDesc.DepthStencilState.StencilEnable = FALSE; psoDesc.SampleMask = UINT_MAX; psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE; psoDesc.NumRenderTargets = 1; psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM; psoDesc.SampleDesc.Count = 1; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState))); } // Create the command list. ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocator.Get(), m_pipelineState.Get(), IID_PPV_ARGS(&m_commandList))); // Create the vertex buffer. { // Define the geometry for a triangle. Vertex triangleVertices[] = { { { 0.0f, 0.25f * m_aspectRatio, 0.0f }, { 0.5f, 0.0f } }, { { 0.25f, -0.25f * m_aspectRatio, 0.0f }, { 1.0f, 1.0f } }, { { -0.25f, -0.25f * m_aspectRatio, 0.0f }, { 0.0f, 1.0f } } }; const UINT vertexBufferSize = 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. ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(vertexBufferSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&m_vertexBuffer))); // Copy the triangle data to the vertex buffer. UINT8* pVertexDataBegin; ThrowIfFailed(m_vertexBuffer->Map(0, nullptr, reinterpret_cast<void**>(&pVertexDataBegin))); memcpy(pVertexDataBegin, triangleVertices, sizeof(triangleVertices)); m_vertexBuffer->Unmap(0, nullptr); // Initialize the vertex buffer view. m_vertexBufferView.BufferLocation = m_vertexBuffer->GetGPUVirtualAddress(); m_vertexBufferView.StrideInBytes = sizeof(Vertex); m_vertexBufferView.SizeInBytes = vertexBufferSize; } // Create an upload heap to load the texture onto the GPU. ComPtr's are CPU objects // but this heap needs to stay in scope until the GPU work is complete. We will // synchronize with the GPU at the end of this method before the ComPtr is destroyed. ComPtr<ID3D12Resource> textureUploadHeap; // Create the texture. { // Describe and create a Texture2D. D3D12_RESOURCE_DESC textureDesc = {}; textureDesc.MipLevels = 1; textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; textureDesc.Width = TextureWidth; textureDesc.Height = TextureHeight; textureDesc.Flags = D3D12_RESOURCE_FLAG_NONE; textureDesc.DepthOrArraySize = 1; textureDesc.SampleDesc.Count = 1; textureDesc.SampleDesc.Quality = 0; textureDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D; ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &textureDesc, D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&m_texture))); const UINT64 uploadBufferSize = GetRequiredIntermediateSize(m_texture.Get(), 0, 1); // Create the GPU upload buffer. ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(uploadBufferSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&textureUploadHeap))); // Copy data to the intermediate upload heap and then schedule a copy // from the upload heap to the Texture2D. std::vector<UINT8> texture = GenerateTextureData(); D3D12_SUBRESOURCE_DATA textureData = {}; textureData.pData = &texture[0]; textureData.RowPitch = TextureWidth * TexturePixelSize; textureData.SlicePitch = textureData.RowPitch * TextureHeight; UpdateSubresources(m_commandList.Get(), m_texture.Get(), textureUploadHeap.Get(), 0, 0, 1, &textureData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_texture.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE)); // Describe and create a SRV for the texture. D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {}; srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING; srvDesc.Format = textureDesc.Format; srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D; srvDesc.Texture2D.MipLevels = 1; m_device->CreateShaderResourceView(m_texture.Get(), &srvDesc, m_srvHeap->GetCPUDescriptorHandleForHeapStart()); } // Close the command list and execute it to begin the initial GPU setup. ThrowIfFailed(m_commandList->Close()); ID3D12CommandList* ppCommandLists[] = { m_commandList.Get() }; m_commandQueue->ExecuteCommandLists(_countof(ppCommandLists), ppCommandLists); // Create synchronization objects and wait until assets have been uploaded to the GPU. { ThrowIfFailed(m_device->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence))); m_fenceValue = 1; // Create an event handle to use for frame synchronization. m_fenceEvent = CreateEventEx(nullptr, FALSE, FALSE, EVENT_ALL_ACCESS); if (m_fenceEvent == nullptr) { ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError())); } // 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(); } }
// Load the sample assets. void D3D12HelloConstBuffers::LoadAssets() { // Create a root signature consisting of a single CBV parameter. { CD3DX12_DESCRIPTOR_RANGE ranges[1]; CD3DX12_ROOT_PARAMETER rootParameters[1]; ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0); rootParameters[0].InitAsDescriptorTable(1, &ranges[0], D3D12_SHADER_VISIBILITY_VERTEX); // Allow input layout and deny uneccessary access to certain pipeline stages. D3D12_ROOT_SIGNATURE_FLAGS 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; CD3DX12_ROOT_SIGNATURE_DESC rootSignatureDesc; rootSignatureDesc.Init(_countof(rootParameters), rootParameters, 0, nullptr, rootSignatureFlags); ComPtr<ID3DBlob> signature; ComPtr<ID3DBlob> error; ThrowIfFailed(D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error)); ThrowIfFailed(m_device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature))); } // Create the pipeline state, which includes compiling and loading shaders. { ComPtr<ID3DBlob> vertexShader; ComPtr<ID3DBlob> pixelShader; #if DEBUG // Enable better shader debugging with the graphics debugging tools. UINT compileFlags = D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION; #else UINT compileFlags = 0; #endif ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "VSMain", "vs_5_0", compileFlags, 0, &vertexShader, nullptr)); ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "PSMain", "ps_5_0", compileFlags, 0, &pixelShader, nullptr)); // Define the vertex input layout. D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = { { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }, { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 } }; // Describe and create the graphics pipeline state object (PSO). D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {}; psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) }; psoDesc.pRootSignature = m_rootSignature.Get(); psoDesc.VS = { reinterpret_cast<UINT8*>(vertexShader->GetBufferPointer()), vertexShader->GetBufferSize() }; psoDesc.PS = { reinterpret_cast<UINT8*>(pixelShader->GetBufferPointer()), pixelShader->GetBufferSize() }; psoDesc.RasterizerState = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT); psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT); psoDesc.DepthStencilState.DepthEnable = FALSE; psoDesc.DepthStencilState.StencilEnable = FALSE; psoDesc.SampleMask = UINT_MAX; psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE; psoDesc.NumRenderTargets = 1; psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM; psoDesc.SampleDesc.Count = 1; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState))); } // Create the command list. ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocator.Get(), m_pipelineState.Get(), IID_PPV_ARGS(&m_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(m_commandList->Close()); // Create the vertex buffer. { // Define the geometry for a triangle. Vertex triangleVertices[] = { { { 0.0f, 0.25f * m_aspectRatio, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } }, { { 0.25f, -0.25f * m_aspectRatio, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } }, { { -0.25f, -0.25f * m_aspectRatio, 0.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } } }; const UINT vertexBufferSize = 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. ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(vertexBufferSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&m_vertexBuffer))); // Copy the triangle data to the vertex buffer. UINT8* pVertexDataBegin; ThrowIfFailed(m_vertexBuffer->Map(0, nullptr, reinterpret_cast<void**>(&pVertexDataBegin))); memcpy(pVertexDataBegin, triangleVertices, sizeof(triangleVertices)); m_vertexBuffer->Unmap(0, nullptr); // Initialize the vertex buffer view. m_vertexBufferView.BufferLocation = m_vertexBuffer->GetGPUVirtualAddress(); m_vertexBufferView.StrideInBytes = sizeof(Vertex); m_vertexBufferView.SizeInBytes = vertexBufferSize; } // Create the constant buffer. { ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(1024 * 64), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&m_constantBuffer))); // Describe and create a constant buffer view. D3D12_CONSTANT_BUFFER_VIEW_DESC cbvDesc = {}; cbvDesc.BufferLocation = m_constantBuffer->GetGPUVirtualAddress(); cbvDesc.SizeInBytes = (sizeof(ConstantBuffer) + 255) & ~255; // CB size is required to be 256-byte aligned. m_device->CreateConstantBufferView(&cbvDesc, m_cbvHeap->GetCPUDescriptorHandleForHeapStart()); // Initialize and map the constant buffers. We don't unmap this until the // app closes. Keeping things mapped for the lifetime of the resource is okay. ZeroMemory(&m_constantBufferData, sizeof(m_constantBufferData)); ThrowIfFailed(m_constantBuffer->Map(0, nullptr, reinterpret_cast<void**>(&m_pCbvDataBegin))); memcpy(m_pCbvDataBegin, &m_constantBufferData, sizeof(m_constantBufferData)); } // Create and record the bundle. { ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_BUNDLE, m_bundleAllocator.Get(), m_pipelineState.Get(), IID_PPV_ARGS(&m_bundle))); m_bundle->SetDescriptorHeaps(1, m_cbvHeap.GetAddressOf()); m_bundle->SetGraphicsRootSignature(m_rootSignature.Get()); m_bundle->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST); m_bundle->IASetVertexBuffers(0, 1, &m_vertexBufferView); m_bundle->SetGraphicsRootDescriptorTable(0, m_cbvHeap->GetGPUDescriptorHandleForHeapStart()); m_bundle->DrawInstanced(3, 1, 0, 0); ThrowIfFailed(m_bundle->Close()); } // Create synchronization objects and wait until assets have been uploaded to the GPU. { ThrowIfFailed(m_device->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence))); m_fenceValue = 1; // Create an event handle to use for frame synchronization. m_fenceEvent = CreateEventEx(nullptr, FALSE, FALSE, EVENT_ALL_ACCESS); if (m_fenceEvent == nullptr) { ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError())); } // 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(); } }
// Load the sample assets. void D3D12HelloTriangle::LoadAssets() { // Create an empty root signature. { CD3DX12_ROOT_SIGNATURE_DESC rootSignatureDesc; rootSignatureDesc.Init(0, nullptr, 0, nullptr, D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT); ComPtr<ID3DBlob> signature; ComPtr<ID3DBlob> error; ThrowIfFailed(D3D12SerializeRootSignature(&rootSignatureDesc, D3D_ROOT_SIGNATURE_VERSION_1, &signature, &error)); ThrowIfFailed(m_device->CreateRootSignature(0, signature->GetBufferPointer(), signature->GetBufferSize(), IID_PPV_ARGS(&m_rootSignature))); } // Create the pipeline state, which includes compiling and loading shaders. { ComPtr<ID3DBlob> vertexShader; ComPtr<ID3DBlob> pixelShader; #if defined(_DEBUG) // Enable better shader debugging with the graphics debugging tools. UINT compileFlags = D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION; #else UINT compileFlags = 0; #endif ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "VSMain", "vs_5_0", compileFlags, 0, &vertexShader, nullptr)); ThrowIfFailed(D3DCompileFromFile(GetAssetFullPath(L"shaders.hlsl").c_str(), nullptr, nullptr, "PSMain", "ps_5_0", compileFlags, 0, &pixelShader, nullptr)); // Define the vertex input layout. D3D12_INPUT_ELEMENT_DESC inputElementDescs[] = { { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }, { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 } }; // Describe and create the graphics pipeline state object (PSO). D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {}; psoDesc.InputLayout = { inputElementDescs, _countof(inputElementDescs) }; psoDesc.pRootSignature = m_rootSignature.Get(); psoDesc.VS = { reinterpret_cast<UINT8*>(vertexShader->GetBufferPointer()), vertexShader->GetBufferSize() }; psoDesc.PS = { reinterpret_cast<UINT8*>(pixelShader->GetBufferPointer()), pixelShader->GetBufferSize() }; psoDesc.RasterizerState = CD3DX12_RASTERIZER_DESC(D3D12_DEFAULT); psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT); psoDesc.DepthStencilState.DepthEnable = FALSE; psoDesc.DepthStencilState.StencilEnable = FALSE; psoDesc.SampleMask = UINT_MAX; psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE; psoDesc.NumRenderTargets = 1; psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM; psoDesc.SampleDesc.Count = 1; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState))); } // Create the command list. ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocator.Get(), m_pipelineState.Get(), IID_PPV_ARGS(&m_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(m_commandList->Close()); // Create the vertex buffer. { // Define the geometry for a triangle. Vertex triangleVertices[] = { { { 0.0f, 0.25f * m_aspectRatio, 0.0f }, { 1.0f, 0.0f, 0.0f, 1.0f } }, { { 0.25f, -0.25f * m_aspectRatio, 0.0f }, { 0.0f, 1.0f, 0.0f, 1.0f } }, { { -0.25f, -0.25f * m_aspectRatio, 0.0f }, { 0.0f, 0.0f, 1.0f, 1.0f } } }; const UINT vertexBufferSize = 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. ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(vertexBufferSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&m_vertexBuffer))); // Copy the triangle data to the vertex buffer. UINT8* pVertexDataBegin; CD3DX12_RANGE readRange(0, 0); // We do not intend to read from this resource on the CPU. ThrowIfFailed(m_vertexBuffer->Map(0, &readRange, reinterpret_cast<void**>(&pVertexDataBegin))); memcpy(pVertexDataBegin, triangleVertices, sizeof(triangleVertices)); m_vertexBuffer->Unmap(0, nullptr); // Initialize the vertex buffer view. m_vertexBufferView.BufferLocation = m_vertexBuffer->GetGPUVirtualAddress(); m_vertexBufferView.StrideInBytes = sizeof(Vertex); m_vertexBufferView.SizeInBytes = vertexBufferSize; } // Create synchronization objects and wait until assets have been uploaded to the GPU. { ThrowIfFailed(m_device->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence))); m_fenceValue = 1; // Create an event handle to use for frame synchronization. m_fenceEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr); if (m_fenceEvent == nullptr) { ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError())); } // 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(); } }