// Load the sample assets. void D3D12DynamicIndexing::LoadAssets() { // Note: ComPtr's are CPU objects but these resources need to stay in scope until // the command list that references them has finished executing on the GPU. // We will flush the GPU at the end of this method to ensure the resources are not // prematurely destroyed. ComPtr<ID3D12Resource> vertexBufferUploadHeap; ComPtr<ID3D12Resource> indexBufferUploadHeap; ComPtr<ID3D12Resource> textureUploadHeap; ComPtr<ID3D12Resource> materialsUploadHeap; // Create the root signature. { CD3DX12_DESCRIPTOR_RANGE ranges[3]; ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1 + CityMaterialCount, 0); // Diffuse texture + array of materials. ranges[1].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER, 1, 0); ranges[2].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0); CD3DX12_ROOT_PARAMETER rootParameters[4]; rootParameters[0].InitAsDescriptorTable(1, &ranges[0], D3D12_SHADER_VISIBILITY_PIXEL); rootParameters[1].InitAsDescriptorTable(1, &ranges[1], D3D12_SHADER_VISIBILITY_PIXEL); rootParameters[2].InitAsDescriptorTable(1, &ranges[2], D3D12_SHADER_VISIBILITY_VERTEX); rootParameters[3].InitAsConstants(1, 0, 0, D3D12_SHADER_VISIBILITY_PIXEL); CD3DX12_ROOT_SIGNATURE_DESC rootSignatureDesc; rootSignatureDesc.Init(_countof(rootParameters), rootParameters, 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))); NAME_D3D12_OBJECT(m_rootSignature); } // Create the pipeline state, which includes loading shaders. { UINT8* pVertexShaderData; UINT8* pPixelShaderData; UINT vertexShaderDataLength; UINT pixelShaderDataLength; ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(L"shader_mesh_simple_vert.cso").c_str(), &pVertexShaderData, &vertexShaderDataLength)); ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(L"shader_mesh_dynamic_indexing_pixel.cso").c_str(), &pPixelShaderData, &pixelShaderDataLength)); CD3DX12_RASTERIZER_DESC rasterizerStateDesc(D3D12_DEFAULT); rasterizerStateDesc.CullMode = D3D12_CULL_MODE_NONE; // Describe and create the graphics pipeline state object (PSO). D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {}; psoDesc.InputLayout = { SampleAssets::StandardVertexDescription, SampleAssets::StandardVertexDescriptionNumElements }; psoDesc.pRootSignature = m_rootSignature.Get(); psoDesc.VS = CD3DX12_SHADER_BYTECODE(pVertexShaderData, vertexShaderDataLength); psoDesc.PS = CD3DX12_SHADER_BYTECODE(pPixelShaderData, pixelShaderDataLength); psoDesc.RasterizerState = rasterizerStateDesc; psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT); psoDesc.DepthStencilState = CD3DX12_DEPTH_STENCIL_DESC(D3D12_DEFAULT); psoDesc.SampleMask = UINT_MAX; psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE; psoDesc.NumRenderTargets = 1; psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM; psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT; psoDesc.SampleDesc.Count = 1; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState))); NAME_D3D12_OBJECT(m_pipelineState); delete pVertexShaderData; delete pPixelShaderData; } ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocator.Get(), nullptr, IID_PPV_ARGS(&m_commandList))); NAME_D3D12_OBJECT(m_commandList); // Create render target views (RTVs). CD3DX12_CPU_DESCRIPTOR_HANDLE rtvHandle(m_rtvHeap->GetCPUDescriptorHandleForHeapStart()); for (UINT i = 0; i < FrameCount; i++) { ThrowIfFailed(m_swapChain->GetBuffer(i, IID_PPV_ARGS(&m_renderTargets[i]))); m_device->CreateRenderTargetView(m_renderTargets[i].Get(), nullptr, rtvHandle); rtvHandle.Offset(1, m_rtvDescriptorSize); NAME_D3D12_OBJECT_INDEXED(m_renderTargets, i); } // Read in mesh data for vertex/index buffers. UINT8* pMeshData; UINT meshDataLength; ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(SampleAssets::DataFileName).c_str(), &pMeshData, &meshDataLength)); // Create the vertex buffer. { ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::VertexDataSize), D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&m_vertexBuffer))); ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::VertexDataSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&vertexBufferUploadHeap))); NAME_D3D12_OBJECT(m_vertexBuffer); // Copy data to the intermediate upload heap and then schedule a copy // from the upload heap to the vertex buffer. D3D12_SUBRESOURCE_DATA vertexData = {}; vertexData.pData = pMeshData + SampleAssets::VertexDataOffset; vertexData.RowPitch = SampleAssets::VertexDataSize; vertexData.SlicePitch = vertexData.RowPitch; UpdateSubresources<1>(m_commandList.Get(), m_vertexBuffer.Get(), vertexBufferUploadHeap.Get(), 0, 0, 1, &vertexData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_vertexBuffer.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER)); // Initialize the vertex buffer view. m_vertexBufferView.BufferLocation = m_vertexBuffer->GetGPUVirtualAddress(); m_vertexBufferView.StrideInBytes = SampleAssets::StandardVertexStride; m_vertexBufferView.SizeInBytes = SampleAssets::VertexDataSize; } // Create the index buffer. { ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::IndexDataSize), D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&m_indexBuffer))); ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::IndexDataSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&indexBufferUploadHeap))); NAME_D3D12_OBJECT(m_indexBuffer); // Copy data to the intermediate upload heap and then schedule a copy // from the upload heap to the index buffer. D3D12_SUBRESOURCE_DATA indexData = {}; indexData.pData = pMeshData + SampleAssets::IndexDataOffset; indexData.RowPitch = SampleAssets::IndexDataSize; indexData.SlicePitch = indexData.RowPitch; UpdateSubresources<1>(m_commandList.Get(), m_indexBuffer.Get(), indexBufferUploadHeap.Get(), 0, 0, 1, &indexData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_indexBuffer.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_INDEX_BUFFER)); // Describe the index buffer view. m_indexBufferView.BufferLocation = m_indexBuffer->GetGPUVirtualAddress(); m_indexBufferView.Format = SampleAssets::StandardIndexFormat; m_indexBufferView.SizeInBytes = SampleAssets::IndexDataSize; m_numIndices = SampleAssets::IndexDataSize / 4; // R32_UINT (SampleAssets::StandardIndexFormat) = 4 bytes each. } // Create the textures and sampler. { // Procedurally generate an array of textures to use as city materials. { // All of these materials use the same texture desc. D3D12_RESOURCE_DESC textureDesc = {}; textureDesc.MipLevels = 1; textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; textureDesc.Width = CityMaterialTextureWidth; textureDesc.Height = CityMaterialTextureHeight; textureDesc.Flags = D3D12_RESOURCE_FLAG_NONE; textureDesc.DepthOrArraySize = 1; textureDesc.SampleDesc.Count = 1; textureDesc.SampleDesc.Quality = 0; textureDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D; // The textures evenly span the color rainbow so that each city gets // a different material. float materialGradStep = (1.0f / static_cast<float>(CityMaterialCount)); // Generate texture data. std::vector<std::vector<unsigned char>> cityTextureData; cityTextureData.resize(CityMaterialCount); for (UINT i = 0; i < CityMaterialCount; ++i) { 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_cityMaterialTextures[i]))); NAME_D3D12_OBJECT_INDEXED(m_cityMaterialTextures, i); // Fill the texture. float t = i * materialGradStep; cityTextureData[i].resize(CityMaterialTextureWidth * CityMaterialTextureHeight * CityMaterialTextureChannelCount); for (int x = 0; x < CityMaterialTextureWidth; ++x) { for (int y = 0; y < CityMaterialTextureHeight; ++y) { // Compute the appropriate index into the buffer based on the x/y coordinates. int pixelIndex = (y * CityMaterialTextureChannelCount * CityMaterialTextureWidth) + (x * CityMaterialTextureChannelCount); // Determine this row's position along the rainbow gradient. float tPrime = t + ((static_cast<float>(y) / static_cast<float>(CityMaterialTextureHeight)) * materialGradStep); // Compute the RGB value for this position along the rainbow // and pack the pixel value. XMVECTOR hsl = XMVectorSet(tPrime, 0.5f, 0.5f, 1.0f); XMVECTOR rgb = XMColorHSLToRGB(hsl); cityTextureData[i][pixelIndex + 0] = static_cast<unsigned char>((255 * XMVectorGetX(rgb))); cityTextureData[i][pixelIndex + 1] = static_cast<unsigned char>((255 * XMVectorGetY(rgb))); cityTextureData[i][pixelIndex + 2] = static_cast<unsigned char>((255 * XMVectorGetZ(rgb))); cityTextureData[i][pixelIndex + 3] = 255; } } } // Upload texture data to the default heap resources. { const UINT subresourceCount = textureDesc.DepthOrArraySize * textureDesc.MipLevels; const UINT64 uploadBufferStep = GetRequiredIntermediateSize(m_cityMaterialTextures[0].Get(), 0, subresourceCount); // All of our textures are the same size in this case. const UINT64 uploadBufferSize = uploadBufferStep * CityMaterialCount; 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(&materialsUploadHeap))); for (int i = 0; i < CityMaterialCount; ++i) { // Copy data to the intermediate upload heap and then schedule // a copy from the upload heap to the appropriate texture. D3D12_SUBRESOURCE_DATA textureData = {}; textureData.pData = &cityTextureData[i][0]; textureData.RowPitch = static_cast<LONG_PTR>((CityMaterialTextureChannelCount * textureDesc.Width)); textureData.SlicePitch = textureData.RowPitch * textureDesc.Height; UpdateSubresources(m_commandList.Get(), m_cityMaterialTextures[i].Get(), materialsUploadHeap.Get(), i * uploadBufferStep, 0, subresourceCount, &textureData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_cityMaterialTextures[i].Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE)); } } } // Load the occcity diffuse texture with baked-in ambient lighting. // This texture will be blended with a texture from the materials // array in the pixel shader. { D3D12_RESOURCE_DESC textureDesc = {}; textureDesc.MipLevels = SampleAssets::Textures[0].MipLevels; textureDesc.Format = SampleAssets::Textures[0].Format; textureDesc.Width = SampleAssets::Textures[0].Width; textureDesc.Height = SampleAssets::Textures[0].Height; 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_cityDiffuseTexture))); const UINT subresourceCount = textureDesc.DepthOrArraySize * textureDesc.MipLevels; const UINT64 uploadBufferSize = GetRequiredIntermediateSize(m_cityDiffuseTexture.Get(), 0, subresourceCount); 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))); NAME_D3D12_OBJECT(m_cityDiffuseTexture); // Copy data to the intermediate upload heap and then schedule // a copy from the upload heap to the diffuse texture. D3D12_SUBRESOURCE_DATA textureData = {}; textureData.pData = pMeshData + SampleAssets::Textures[0].Data[0].Offset; textureData.RowPitch = SampleAssets::Textures[0].Data[0].Pitch; textureData.SlicePitch = SampleAssets::Textures[0].Data[0].Size; UpdateSubresources(m_commandList.Get(), m_cityDiffuseTexture.Get(), textureUploadHeap.Get(), 0, 0, subresourceCount, &textureData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_cityDiffuseTexture.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE)); } // Describe and create a sampler. D3D12_SAMPLER_DESC samplerDesc = {}; samplerDesc.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR; samplerDesc.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.MinLOD = 0; samplerDesc.MaxLOD = D3D12_FLOAT32_MAX; samplerDesc.MipLODBias = 0.0f; samplerDesc.MaxAnisotropy = 1; samplerDesc.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS; m_device->CreateSampler(&samplerDesc, m_samplerHeap->GetCPUDescriptorHandleForHeapStart()); // Create SRV for the city's diffuse texture. CD3DX12_CPU_DESCRIPTOR_HANDLE srvHandle(m_cbvSrvHeap->GetCPUDescriptorHandleForHeapStart(), 0, m_cbvSrvDescriptorSize); D3D12_SHADER_RESOURCE_VIEW_DESC diffuseSrvDesc = {}; diffuseSrvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING; diffuseSrvDesc.Format = SampleAssets::Textures->Format; diffuseSrvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D; diffuseSrvDesc.Texture2D.MipLevels = 1; m_device->CreateShaderResourceView(m_cityDiffuseTexture.Get(), &diffuseSrvDesc, srvHandle); srvHandle.Offset(m_cbvSrvDescriptorSize); // Create SRVs for each city material. for (int i = 0; i < CityMaterialCount; ++i) { D3D12_SHADER_RESOURCE_VIEW_DESC materialSrvDesc = {}; materialSrvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING; materialSrvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; materialSrvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D; materialSrvDesc.Texture2D.MipLevels = 1; m_device->CreateShaderResourceView(m_cityMaterialTextures[i].Get(), &materialSrvDesc, srvHandle); srvHandle.Offset(m_cbvSrvDescriptorSize); } } delete pMeshData; // Create the depth stencil view. { D3D12_DEPTH_STENCIL_VIEW_DESC depthStencilDesc = {}; depthStencilDesc.Format = DXGI_FORMAT_D32_FLOAT; depthStencilDesc.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D; depthStencilDesc.Flags = D3D12_DSV_FLAG_NONE; D3D12_CLEAR_VALUE depthOptimizedClearValue = {}; depthOptimizedClearValue.Format = DXGI_FORMAT_D32_FLOAT; depthOptimizedClearValue.DepthStencil.Depth = 1.0f; depthOptimizedClearValue.DepthStencil.Stencil = 0; ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Tex2D(DXGI_FORMAT_D32_FLOAT, m_width, m_height, 1, 0, 1, 0, D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL), D3D12_RESOURCE_STATE_DEPTH_WRITE, &depthOptimizedClearValue, IID_PPV_ARGS(&m_depthStencil) )); NAME_D3D12_OBJECT(m_depthStencil); m_device->CreateDepthStencilView(m_depthStencil.Get(), &depthStencilDesc, m_dsvHeap->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); CreateFrameResources(); // Create synchronization objects and wait until assets have been uploaded to the GPU. { ThrowIfFailed(m_device->CreateFence(m_fenceValue, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence))); m_fenceValue++; // 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. // Signal and increment the fence value. const UINT64 fenceToWaitFor = m_fenceValue; ThrowIfFailed(m_commandQueue->Signal(m_fence.Get(), fenceToWaitFor)); m_fenceValue++; // Wait until the fence is completed. ThrowIfFailed(m_fence->SetEventOnCompletion(fenceToWaitFor, m_fenceEvent)); WaitForSingleObject(m_fenceEvent, INFINITE); } }
// Load the sample assets. void D3D12Bundles::LoadAssets() { // These upload heaps are only needed during loading. ComPtr<ID3D12Resource> vertexBufferUploadHeap; ComPtr<ID3D12Resource> indexBufferUploadHeap; ComPtr<ID3D12Resource> textureUploadHeap; // Create the root signature. { CD3DX12_DESCRIPTOR_RANGE ranges[3]; ranges[0].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SRV, 1, 0); ranges[1].Init(D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER, 1, 0); ranges[2].Init(D3D12_DESCRIPTOR_RANGE_TYPE_CBV, 1, 0); CD3DX12_ROOT_PARAMETER rootParameters[3]; rootParameters[0].InitAsDescriptorTable(1, &ranges[0], D3D12_SHADER_VISIBILITY_PIXEL); rootParameters[1].InitAsDescriptorTable(1, &ranges[1], D3D12_SHADER_VISIBILITY_PIXEL); rootParameters[2].InitAsDescriptorTable(1, &ranges[2], D3D12_SHADER_VISIBILITY_ALL); CD3DX12_ROOT_SIGNATURE_DESC rootSignatureDesc; rootSignatureDesc.Init(_countof(rootParameters), rootParameters, 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 loading shaders. { UINT8* pVertexShaderData; UINT8* pPixelShaderData1; UINT8* pPixelShaderData2; UINT vertexShaderDataLength; UINT pixelShaderDataLength1; UINT pixelShaderDataLength2; // Load pre-compiled shaders. ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(L"shader_mesh_simple_vert.cso").c_str(), &pVertexShaderData, &vertexShaderDataLength)); ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(L"shader_mesh_simple_pixel.cso").c_str(), &pPixelShaderData1, &pixelShaderDataLength1)); ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(L"shader_mesh_alt_pixel.cso").c_str(), &pPixelShaderData2, &pixelShaderDataLength2)); CD3DX12_RASTERIZER_DESC rasterizerStateDesc(D3D12_DEFAULT); rasterizerStateDesc.CullMode = D3D12_CULL_MODE_NONE; // Describe and create the graphics pipeline state objects (PSO). D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc = {}; psoDesc.InputLayout = { SampleAssets::StandardVertexDescription, SampleAssets::StandardVertexDescriptionNumElements }; psoDesc.pRootSignature = m_rootSignature.Get(); psoDesc.VS = { pVertexShaderData, vertexShaderDataLength }; psoDesc.PS = { pPixelShaderData1, pixelShaderDataLength1 }; psoDesc.RasterizerState = rasterizerStateDesc; psoDesc.BlendState = CD3DX12_BLEND_DESC(D3D12_DEFAULT); psoDesc.DepthStencilState = CD3DX12_DEPTH_STENCIL_DESC(D3D12_DEFAULT); psoDesc.SampleMask = UINT_MAX; psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE; psoDesc.NumRenderTargets = 1; psoDesc.RTVFormats[0] = DXGI_FORMAT_R8G8B8A8_UNORM; psoDesc.DSVFormat = DXGI_FORMAT_D32_FLOAT; psoDesc.SampleDesc.Count = 1; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState1))); // Modify the description to use an alternate pixel shader and create // a second PSO. psoDesc.PS = { pPixelShaderData2, pixelShaderDataLength2 }; ThrowIfFailed(m_device->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&m_pipelineState2))); delete pVertexShaderData; delete pPixelShaderData1; delete pPixelShaderData2; } ThrowIfFailed(m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocator.Get(), nullptr, IID_PPV_ARGS(&m_commandList))); // Create render target views (RTVs). CD3DX12_CPU_DESCRIPTOR_HANDLE rtvHandle(m_rtvHeap->GetCPUDescriptorHandleForHeapStart()); for (UINT i = 0; i < FrameCount; i++) { ThrowIfFailed(m_swapChain->GetBuffer(i, IID_PPV_ARGS(&m_renderTargets[i]))); m_device->CreateRenderTargetView(m_renderTargets[i].Get(), nullptr, rtvHandle); rtvHandle.Offset(1, m_rtvDescriptorSize); } // Read in mesh data for vertex/index buffers. UINT8* pMeshData; UINT meshDataLength; ThrowIfFailed(ReadDataFromFile(GetAssetFullPath(SampleAssets::DataFileName).c_str(), &pMeshData, &meshDataLength)); // Create the vertex buffer. { ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::VertexDataSize), D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&m_vertexBuffer))); ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::VertexDataSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&vertexBufferUploadHeap))); // Copy data to the intermediate upload heap and then schedule a copy // from the upload heap to the vertex buffer. D3D12_SUBRESOURCE_DATA vertexData = {}; vertexData.pData = pMeshData + SampleAssets::VertexDataOffset; vertexData.RowPitch = SampleAssets::VertexDataSize; vertexData.SlicePitch = vertexData.RowPitch; UpdateSubresources<1>(m_commandList.Get(), m_vertexBuffer.Get(), vertexBufferUploadHeap.Get(), 0, 0, 1, &vertexData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_vertexBuffer.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER)); // Initialize the vertex buffer view. m_vertexBufferView.BufferLocation = m_vertexBuffer->GetGPUVirtualAddress(); m_vertexBufferView.StrideInBytes = SampleAssets::StandardVertexStride; m_vertexBufferView.SizeInBytes = SampleAssets::VertexDataSize; } // Create the index buffer. { ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::IndexDataSize), D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&m_indexBuffer))); ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Buffer(SampleAssets::IndexDataSize), D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&indexBufferUploadHeap))); // Copy data to the intermediate upload heap and then schedule a copy // from the upload heap to the index buffer. D3D12_SUBRESOURCE_DATA indexData = {}; indexData.pData = pMeshData + SampleAssets::IndexDataOffset; indexData.RowPitch = SampleAssets::IndexDataSize; indexData.SlicePitch = indexData.RowPitch; UpdateSubresources<1>(m_commandList.Get(), m_indexBuffer.Get(), indexBufferUploadHeap.Get(), 0, 0, 1, &indexData); m_commandList->ResourceBarrier(1, &CD3DX12_RESOURCE_BARRIER::Transition(m_indexBuffer.Get(), D3D12_RESOURCE_STATE_COPY_DEST, D3D12_RESOURCE_STATE_INDEX_BUFFER)); // Describe the index buffer view. m_indexBufferView.BufferLocation = m_indexBuffer->GetGPUVirtualAddress(); m_indexBufferView.Format = SampleAssets::StandardIndexFormat; m_indexBufferView.SizeInBytes = SampleAssets::IndexDataSize; m_numIndices = SampleAssets::IndexDataSize / 4; // R32_UINT (SampleAssets::StandardIndexFormat) = 4 bytes each. } // Create the texture and sampler. { // Describe and create a Texture2D. D3D12_RESOURCE_DESC textureDesc = {}; textureDesc.MipLevels = SampleAssets::Textures[0].MipLevels; textureDesc.Format = SampleAssets::Textures[0].Format; textureDesc.Width = SampleAssets::Textures[0].Width; textureDesc.Height = SampleAssets::Textures[0].Height; 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 UINT subresourceCount = textureDesc.DepthOrArraySize * textureDesc.MipLevels; const UINT64 uploadBufferSize = GetRequiredIntermediateSize(m_texture.Get(), 0, subresourceCount); 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. D3D12_SUBRESOURCE_DATA textureData = {}; textureData.pData = pMeshData + SampleAssets::Textures[0].Data[0].Offset; textureData.RowPitch = SampleAssets::Textures[0].Data[0].Pitch; textureData.SlicePitch = SampleAssets::Textures[0].Data[0].Size; UpdateSubresources(m_commandList.Get(), m_texture.Get(), textureUploadHeap.Get(), 0, 0, subresourceCount, &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 sampler. D3D12_SAMPLER_DESC samplerDesc = {}; samplerDesc.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR; samplerDesc.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP; samplerDesc.MinLOD = 0; samplerDesc.MaxLOD = D3D12_FLOAT32_MAX; samplerDesc.MipLODBias = 0.0f; samplerDesc.MaxAnisotropy = 1; samplerDesc.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS; m_device->CreateSampler(&samplerDesc, m_samplerHeap->GetCPUDescriptorHandleForHeapStart()); // Describe and create a SRV for the texture. D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {}; srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING; srvDesc.Format = SampleAssets::Textures->Format; srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D; srvDesc.Texture2D.MipLevels = 1; m_device->CreateShaderResourceView(m_texture.Get(), &srvDesc, m_cbvSrvHeap->GetCPUDescriptorHandleForHeapStart()); } delete pMeshData; // Create the depth stencil view. { D3D12_DEPTH_STENCIL_VIEW_DESC depthStencilDesc = {}; depthStencilDesc.Format = DXGI_FORMAT_D32_FLOAT; depthStencilDesc.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D; depthStencilDesc.Flags = D3D12_DSV_FLAG_NONE; D3D12_CLEAR_VALUE depthOptimizedClearValue = {}; depthOptimizedClearValue.Format = DXGI_FORMAT_D32_FLOAT; depthOptimizedClearValue.DepthStencil.Depth = 1.0f; depthOptimizedClearValue.DepthStencil.Stencil = 0; ThrowIfFailed(m_device->CreateCommittedResource( &CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE, &CD3DX12_RESOURCE_DESC::Tex2D(DXGI_FORMAT_D32_FLOAT, m_width, m_height, 1, 0, 1, 0, D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL), D3D12_RESOURCE_STATE_DEPTH_WRITE, &depthOptimizedClearValue, IID_PPV_ARGS(&m_depthStencil) )); m_device->CreateDepthStencilView(m_depthStencil.Get(), &depthStencilDesc, m_dsvHeap->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); CreateFrameResources(); // Create synchronization objects and wait until assets have been uploaded to the GPU. { ThrowIfFailed(m_device->CreateFence(m_fenceValue, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&m_fence))); m_fenceValue++; // 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. // Signal and increment the fence value. const UINT64 fenceToWaitFor = m_fenceValue; ThrowIfFailed(m_commandQueue->Signal(m_fence.Get(), fenceToWaitFor)); m_fenceValue++; // Wait until the fence is completed. ThrowIfFailed(m_fence->SetEventOnCompletion(fenceToWaitFor, m_fenceEvent)); WaitForSingleObject(m_fenceEvent, INFINITE); } }