diff options
Diffstat (limited to 'core/src/Entrypoint/Backend_DirectX12.cpp')
| -rw-r--r-- | core/src/Entrypoint/Backend_DirectX12.cpp | 470 |
1 files changed, 0 insertions, 470 deletions
diff --git a/core/src/Entrypoint/Backend_DirectX12.cpp b/core/src/Entrypoint/Backend_DirectX12.cpp deleted file mode 100644 index fd4a531..0000000 --- a/core/src/Entrypoint/Backend_DirectX12.cpp +++ /dev/null @@ -1,470 +0,0 @@ -#include "Backend.hpp" - -#if BUILD_CORE_WITH_DX12_BACKEND -# include <backend/imgui_impl_dx12.h> -# include <backend/imgui_impl_win32.h> -# include <d3d12.h> -# include <dxgi1_4.h> -# include <tchar.h> -# include <backend/imgui_impl_dx12.cpp> -# include <stdexcept> - -constexpr int kNumFramesInFlight = 3; -constexpr int kNumBackBuffers = 3; - -// Forward declare message handler from imgui_impl_win32.cpp -extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); - -class DirectX12Backend : public RenderingBackend -{ -private: - struct FrameContext - { - ID3D12CommandAllocator* CommandAllocator; - UINT64 FenceValue; - }; - - HWND hWnd; - WNDCLASSEX wc; - - FrameContext mFrameContext[kNumFramesInFlight] = {}; - UINT mFrameIndex = 0; - - ID3D12Device* mD3dDevice = nullptr; - ID3D12DescriptorHeap* mD3dRtvDescHeap = nullptr; - ID3D12DescriptorHeap* mD3dSrvDescHeap = nullptr; - ID3D12CommandQueue* mD3dCommandQueue = nullptr; - ID3D12GraphicsCommandList* mD3dCommandList = nullptr; - ID3D12Fence* mFence = nullptr; - HANDLE mFenceEvent = nullptr; - UINT64 mFenceLastSignaledValue = 0; - IDXGISwapChain3* mSwapChain = nullptr; - HANDLE mSwapChainWaitableObject = nullptr; - ID3D12Resource* mMainRenderTargetResource[kNumBackBuffers] = {}; - D3D12_CPU_DESCRIPTOR_HANDLE mMainRenderTargetDescriptor[kNumBackBuffers] = {}; - -public: - DirectX12Backend() - { - ImGui_ImplWin32_EnableDpiAwareness(); - - wc.cbSize = sizeof(WNDCLASSEX); - wc.style = CS_CLASSDC; - wc.lpfnWndProc = &StaticWndProc; - wc.cbClsExtra = 0L; - wc.cbWndExtra = 0L; - wc.hInstance = GetModuleHandle(nullptr); - wc.hIcon = nullptr; - wc.hCursor = nullptr; - wc.hbrBackground = nullptr; - wc.lpszMenuName = nullptr; - wc.lpszClassName = _T("Cplt"); - wc.hIconSm = nullptr; - ::RegisterClassEx(&wc); - - hWnd = ::CreateWindow( - wc.lpszClassName, - _T("Cplt main window"), - WS_OVERLAPPEDWINDOW, - /* x */ 100, - /* y */ 100, - /* window width */ 1280, - /* window height */ 800, - nullptr, - nullptr, - wc.hInstance, - this); - - if (!CreateDeviceD3D()) { - CleanupDeviceD3D(); - ::UnregisterClass(wc.lpszClassName, wc.hInstance); - throw std::runtime_error("Failed to create d3d device."); - } - - ::ShowWindow(hWnd, SW_SHOWDEFAULT); - ::UpdateWindow(hWnd); - - IMGUI_CHECKVERSION(); - ImGui::CreateContext(); - - ImGui_ImplWin32_Init(hWnd); - ImGui_ImplDX12_Init(mD3dDevice, kNumFramesInFlight, DXGI_FORMAT_R8G8B8A8_UNORM, mD3dSrvDescHeap, mD3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(), mD3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart()); - } - - virtual ~DirectX12Backend() - { - WaitForLastSubmittedFrame(); - - // Cleanup - ImGui_ImplDX12_Shutdown(); - ImGui_ImplWin32_Shutdown(); - ImGui::DestroyContext(); - - CleanupDeviceD3D(); - ::DestroyWindow(hWnd); - ::UnregisterClass(wc.lpszClassName, wc.hInstance); - } - - virtual void RunUntilWindowClose(void (*windowContent)()) - { - while (true) { - MSG msg; - bool done = false; - while (::PeekMessage(&msg, nullptr, 0U, 0U, PM_REMOVE)) - { - ::TranslateMessage(&msg); - ::DispatchMessage(&msg); - if (msg.message == WM_QUIT) { - done = true; - } - } - if (done) break; - - // Start the Dear ImGui frame - ImGui_ImplDX12_NewFrame(); - ImGui_ImplWin32_NewFrame(); - ImGui::NewFrame(); - - windowContent(); - - ImGui::Render(); - - FrameContext* frameCtx = WaitForNextFrameResources(); - UINT backBufferIdx = mSwapChain->GetCurrentBackBufferIndex(); - frameCtx->CommandAllocator->Reset(); - - D3D12_RESOURCE_BARRIER barrier = {}; - barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION; - barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE; - barrier.Transition.pResource = mMainRenderTargetResource[backBufferIdx]; - barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES; - barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT; - barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET; - mD3dCommandList->Reset(frameCtx->CommandAllocator, nullptr); - mD3dCommandList->ResourceBarrier(1, &barrier); - - const ImVec4 kClearColor = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); - const float kClearColorWithAlpha[4] = { kClearColor.x * kClearColor.w, kClearColor.y * kClearColor.w, kClearColor.z * kClearColor.w, kClearColor.w }; - mD3dCommandList->ClearRenderTargetView(mMainRenderTargetDescriptor[backBufferIdx], kClearColorWithAlpha, 0, nullptr); - mD3dCommandList->OMSetRenderTargets(1, &mMainRenderTargetDescriptor[backBufferIdx], FALSE, nullptr); - mD3dCommandList->SetDescriptorHeaps(1, &mD3dSrvDescHeap); - ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), mD3dCommandList); - barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET; - barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT; - mD3dCommandList->ResourceBarrier(1, &barrier); - mD3dCommandList->Close(); - - mD3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&mD3dCommandList); - - mSwapChain->Present(1, 0); // Present with vsync - - UINT64 fenceValue = mFenceLastSignaledValue + 1; - mD3dCommandQueue->Signal(mFence, fenceValue); - mFenceLastSignaledValue = fenceValue; - frameCtx->FenceValue = fenceValue; - } - } - -private: - bool CreateDeviceD3D() - { - // Setup swap chain - DXGI_SWAP_CHAIN_DESC1 sd; - { - ZeroMemory(&sd, sizeof(sd)); - sd.BufferCount = kNumBackBuffers; - sd.Width = 0; - sd.Height = 0; - sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM; - sd.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT; - sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; - sd.SampleDesc.Count = 1; - sd.SampleDesc.Quality = 0; - sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD; - sd.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED; - sd.Scaling = DXGI_SCALING_STRETCH; - sd.Stereo = FALSE; - } - - // Create device - D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0; - if (D3D12CreateDevice(nullptr, featureLevel, IID_PPV_ARGS(&mD3dDevice)) != S_OK) { - return false; - } - - { - D3D12_DESCRIPTOR_HEAP_DESC desc = {}; - desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV; - desc.NumDescriptors = kNumBackBuffers; - desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE; - desc.NodeMask = 1; - if (mD3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&mD3dRtvDescHeap)) != S_OK) { - return false; - } - - SIZE_T rtvDescriptorSize = mD3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV); - D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = mD3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart(); - for (UINT i = 0; i < kNumBackBuffers; i++) { - mMainRenderTargetDescriptor[i] = rtvHandle; - rtvHandle.ptr += rtvDescriptorSize; - } - } - - { - D3D12_DESCRIPTOR_HEAP_DESC desc = {}; - desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV; - desc.NumDescriptors = 1; - desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE; - if (mD3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&mD3dSrvDescHeap)) != S_OK) { - return false; - } - } - - { - D3D12_COMMAND_QUEUE_DESC desc = {}; - desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT; - desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE; - desc.NodeMask = 1; - if (mD3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&mD3dCommandQueue)) != S_OK) { - return false; - } - } - - for (UINT i = 0; i < kNumFramesInFlight; i++) { - if (mD3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&mFrameContext[i].CommandAllocator)) != S_OK) { - return false; - } - } - - if (mD3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, mFrameContext[0].CommandAllocator, nullptr, IID_PPV_ARGS(&mD3dCommandList)) != S_OK || - mD3dCommandList->Close() != S_OK) - { - return false; - } - - if (mD3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&mFence)) != S_OK) return false; - - mFenceEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr); - if (mFenceEvent == nullptr) return false; - - { - IDXGIFactory4* dxgiFactory = nullptr; - IDXGISwapChain1* swapChain1 = nullptr; - if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK) - return false; - if (dxgiFactory->CreateSwapChainForHwnd(mD3dCommandQueue, hWnd, &sd, nullptr, nullptr, &swapChain1) != S_OK) - return false; - if (swapChain1->QueryInterface(IID_PPV_ARGS(&mSwapChain)) != S_OK) - return false; - swapChain1->Release(); - dxgiFactory->Release(); - mSwapChain->SetMaximumFrameLatency(kNumBackBuffers); - mSwapChainWaitableObject = mSwapChain->GetFrameLatencyWaitableObject(); - } - - CreateRenderTarget(); - return true; - } - - void CleanupDeviceD3D() - { - CleanupRenderTarget(); - if (mSwapChain) { - mSwapChain->Release(); - mSwapChain = nullptr; - } - if (mSwapChainWaitableObject != nullptr) { - CloseHandle(mSwapChainWaitableObject); - } - for (UINT i = 0; i < kNumFramesInFlight; i++) - if (mFrameContext[i].CommandAllocator) { - mFrameContext[i].CommandAllocator->Release(); - mFrameContext[i].CommandAllocator = nullptr; - } - if (mD3dCommandQueue) { - mD3dCommandQueue->Release(); - mD3dCommandQueue = nullptr; - } - if (mD3dCommandList) { - mD3dCommandList->Release(); - mD3dCommandList = nullptr; - } - if (mD3dRtvDescHeap) { - mD3dRtvDescHeap->Release(); - mD3dRtvDescHeap = nullptr; - } - if (mD3dSrvDescHeap) { - mD3dSrvDescHeap->Release(); - mD3dSrvDescHeap = nullptr; - } - if (mFence) { - mFence->Release(); - mFence = nullptr; - } - if (mFenceEvent) { - CloseHandle(mFenceEvent); - mFenceEvent = nullptr; - } - if (mD3dDevice) { - mD3dDevice->Release(); - mD3dDevice = nullptr; - } - } - - void CreateRenderTarget() - { - for (UINT i = 0; i < kNumBackBuffers; i++) - { - ID3D12Resource* pBackBuffer = nullptr; - mSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer)); - mD3dDevice->CreateRenderTargetView(pBackBuffer, nullptr, mMainRenderTargetDescriptor[i]); - mMainRenderTargetResource[i] = pBackBuffer; - } - } - - void CleanupRenderTarget() - { - WaitForLastSubmittedFrame(); - - for (UINT i = 0; i < kNumBackBuffers; i++) - if (mMainRenderTargetResource[i]) { - mMainRenderTargetResource[i]->Release(); - mMainRenderTargetResource[i] = nullptr; - } - } - - void WaitForLastSubmittedFrame() - { - FrameContext* frameCtx = &mFrameContext[mFrameIndex % kNumFramesInFlight]; - - UINT64 fenceValue = frameCtx->FenceValue; - if (fenceValue == 0) - return; // No fence was signaled - - frameCtx->FenceValue = 0; - if (mFence->GetCompletedValue() >= fenceValue) - return; - - mFence->SetEventOnCompletion(fenceValue, mFenceEvent); - WaitForSingleObject(mFenceEvent, INFINITE); - } - - FrameContext* WaitForNextFrameResources() - { - UINT nextFrameIndex = mFrameIndex + 1; - mFrameIndex = nextFrameIndex; - - HANDLE waitableObjects[] = { mSwapChainWaitableObject, nullptr }; - DWORD numWaitableObjects = 1; - - FrameContext* frameCtx = &mFrameContext[nextFrameIndex % kNumFramesInFlight]; - UINT64 fenceValue = frameCtx->FenceValue; - if (fenceValue != 0) // means no fence was signaled - { - frameCtx->FenceValue = 0; - mFence->SetEventOnCompletion(fenceValue, mFenceEvent); - waitableObjects[1] = mFenceEvent; - numWaitableObjects = 2; - } - - WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE); - - return frameCtx; - } - - void ResizeSwapChain(int width, int height) - { - DXGI_SWAP_CHAIN_DESC1 sd; - mSwapChain->GetDesc1(&sd); - sd.Width = width; - sd.Height = height; - - IDXGIFactory4* dxgiFactory = nullptr; - mSwapChain->GetParent(IID_PPV_ARGS(&dxgiFactory)); - - mSwapChain->Release(); - CloseHandle(mSwapChainWaitableObject); - - IDXGISwapChain1* swapChain1 = nullptr; - dxgiFactory->CreateSwapChainForHwnd(mD3dCommandQueue, hWnd, &sd, nullptr, nullptr, &swapChain1); - swapChain1->QueryInterface(IID_PPV_ARGS(&mSwapChain)); - swapChain1->Release(); - dxgiFactory->Release(); - - mSwapChain->SetMaximumFrameLatency(kNumBackBuffers); - - mSwapChainWaitableObject = mSwapChain->GetFrameLatencyWaitableObject(); - assert(mSwapChainWaitableObject != nullptr); - } - - static LRESULT CALLBACK StaticWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) - { - DirectX12Backend* self; - if (uMsg == WM_NCCREATE) { - auto lpcs = reinterpret_cast<LPCREATESTRUCT>(lParam); - self = static_cast<DirectX12Backend*>(lpcs->lpCreateParams); - self->hWnd = hWnd; - SetWindowLongPtr(hWnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(self)); - } else { - self = reinterpret_cast<DirectX12Backend*>(GetWindowLongPtr(hWnd, GWLP_USERDATA)); - } - - if (self) { - return self->WndProc(uMsg, wParam, lParam); - } else { - return DefWindowProc(hWnd, uMsg, wParam, lParam); - } - } - - LRESULT WndProc(UINT msg, WPARAM wParam, LPARAM lParam) - { - if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam)) { - return true; - } - - switch (msg) { - case WM_SIZE: { - if (mD3dDevice != nullptr && wParam != SIZE_MINIMIZED) { - WaitForLastSubmittedFrame(); - ImGui_ImplDX12_InvalidateDeviceObjects(); - CleanupRenderTarget(); - ResizeSwapChain((UINT)LOWORD(lParam), (UINT)HIWORD(lParam)); - CreateRenderTarget(); - ImGui_ImplDX12_CreateDeviceObjects(); - } - return 0; - } - - case WM_SYSCOMMAND: { - // Disable ALT application menu - if ((wParam & 0xfff0) == SC_KEYMENU) { - return 0; - } - } break; - - case WM_DESTROY: { - ::PostQuitMessage(0); - return 0; - } - } - return ::DefWindowProc(hWnd, msg, wParam, lParam); - } -}; - -std::unique_ptr<RenderingBackend> RenderingBackend::CreateDx12Backend() -{ - try { - return std::make_unique<DirectX12Backend>(); - } catch (std::exception& e) { - return nullptr; - } -} - -#else // ^^ BUILD_CORE_WITH_DX12_BACKEND | BUILD_CORE_WITH_DX12_BACKEND vv - -std::unique_ptr<RenderingBackend> RenderingBackend::CreateDx12Backend() -{ - return nullptr; -} - -#endif |