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@@ -36,90 +36,183 @@ static HANDLE g_hSwapChainWaitableObject = NULL;
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static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
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static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
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-void CreateRenderTarget()
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+// Forward declarations of helper functions
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+bool CreateDeviceD3D(HWND hWnd);
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+void CleanupDeviceD3D();
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+void CreateRenderTarget();
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+void CleanupRenderTarget();
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+void WaitForLastSubmittedFrame();
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+FrameContext* WaitForNextFrameResources();
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+void ResizeSwapChain(HWND hWnd, int width, int height);
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+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
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+
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+// Main code
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+int main(int, char**)
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{
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- ID3D12Resource* pBackBuffer;
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- for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
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+ // Create application window
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+ WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
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+ ::RegisterClassEx(&wc);
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+ HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
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+
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+ // Initialize Direct3D
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+ if (!CreateDeviceD3D(hwnd))
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{
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- g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer));
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- g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, g_mainRenderTargetDescriptor[i]);
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- g_mainRenderTargetResource[i] = pBackBuffer;
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+ CleanupDeviceD3D();
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+ ::UnregisterClass(wc.lpszClassName, wc.hInstance);
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+ return 1;
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}
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-}
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-void WaitForLastSubmittedFrame()
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-{
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- FrameContext* frameCtxt = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
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+ // Show the window
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+ ::ShowWindow(hwnd, SW_SHOWDEFAULT);
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+ ::UpdateWindow(hwnd);
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- UINT64 fenceValue = frameCtxt->FenceValue;
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- if (fenceValue == 0)
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- return; // No fence was signaled
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+ // Setup Dear ImGui context
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+ IMGUI_CHECKVERSION();
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+ ImGui::CreateContext();
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+ ImGuiIO& io = ImGui::GetIO(); (void)io;
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+ //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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- frameCtxt->FenceValue = 0;
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- if (g_fence->GetCompletedValue() >= fenceValue)
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- return;
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+ // Setup Dear ImGui style
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+ ImGui::StyleColorsDark();
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+ //ImGui::StyleColorsClassic();
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- g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
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- WaitForSingleObject(g_fenceEvent, INFINITE);
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-}
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+ // Setup Platform/Renderer bindings
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+ ImGui_ImplWin32_Init(hwnd);
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+ ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
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+ DXGI_FORMAT_R8G8B8A8_UNORM,
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+ g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
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+ g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
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-FrameContext* WaitForNextFrameResources()
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-{
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- UINT nextFrameIndex = g_frameIndex + 1;
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- g_frameIndex = nextFrameIndex;
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+ // Load Fonts
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+ // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
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+ // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
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+ // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
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+ // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
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+ // - Read 'misc/fonts/README.txt' for more instructions and details.
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+ // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
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+ //io.Fonts->AddFontDefault();
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+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
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+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
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+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
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+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
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+ //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
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+ //IM_ASSERT(font != NULL);
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- HANDLE waitableObjects[] = { g_hSwapChainWaitableObject, NULL };
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- DWORD numWaitableObjects = 1;
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+ // Our state
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+ bool show_demo_window = true;
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+ bool show_another_window = false;
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+ ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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- FrameContext* frameCtxt = &g_frameContext[nextFrameIndex % NUM_FRAMES_IN_FLIGHT];
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- UINT64 fenceValue = frameCtxt->FenceValue;
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- if (fenceValue != 0) // means no fence was signaled
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+ // Main loop
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+ MSG msg;
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+ ZeroMemory(&msg, sizeof(msg));
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+ while (msg.message != WM_QUIT)
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{
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- frameCtxt->FenceValue = 0;
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- g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
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- waitableObjects[1] = g_fenceEvent;
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- numWaitableObjects = 2;
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- }
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+ // Poll and handle messages (inputs, window resize, etc.)
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+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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+ if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
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+ {
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+ ::TranslateMessage(&msg);
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+ ::DispatchMessage(&msg);
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+ continue;
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+ }
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- WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE);
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+ // Start the Dear ImGui frame
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+ ImGui_ImplDX12_NewFrame();
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+ ImGui_ImplWin32_NewFrame();
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+ ImGui::NewFrame();
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- return frameCtxt;
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-}
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+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
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+ if (show_demo_window)
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+ ImGui::ShowDemoWindow(&show_demo_window);
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-void ResizeSwapChain(HWND hWnd, int width, int height)
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-{
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- DXGI_SWAP_CHAIN_DESC1 sd;
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- g_pSwapChain->GetDesc1(&sd);
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- sd.Width = width;
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- sd.Height = height;
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+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
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+ {
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+ static float f = 0.0f;
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+ static int counter = 0;
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- IDXGIFactory4* dxgiFactory = NULL;
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- g_pSwapChain->GetParent(IID_PPV_ARGS(&dxgiFactory));
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+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
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- g_pSwapChain->Release();
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- CloseHandle(g_hSwapChainWaitableObject);
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+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
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+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
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+ ImGui::Checkbox("Another Window", &show_another_window);
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- IDXGISwapChain1* swapChain1 = NULL;
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- dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1);
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- swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain));
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- swapChain1->Release();
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- dxgiFactory->Release();
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+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
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+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
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- g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
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+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
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+ counter++;
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+ ImGui::SameLine();
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+ ImGui::Text("counter = %d", counter);
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- g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
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- assert(g_hSwapChainWaitableObject != NULL);
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-}
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+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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+ ImGui::End();
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+ }
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+
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+ // 3. Show another simple window.
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+ if (show_another_window)
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+ {
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+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
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+ ImGui::Text("Hello from another window!");
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+ if (ImGui::Button("Close Me"))
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+ show_another_window = false;
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+ ImGui::End();
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+ }
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+
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+ // Rendering
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+ FrameContext* frameCtxt = WaitForNextFrameResources();
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+ UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
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+ frameCtxt->CommandAllocator->Reset();
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+
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+ D3D12_RESOURCE_BARRIER barrier = {};
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+ barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
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+ barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
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+ barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
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+ barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
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+ barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
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+ barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
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+
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+ g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
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+ g_pd3dCommandList->ResourceBarrier(1, &barrier);
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+ g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_color, 0, NULL);
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+ g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
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+ g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
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+ ImGui::Render();
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+ ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
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+ barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
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+ barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
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+ g_pd3dCommandList->ResourceBarrier(1, &barrier);
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+ g_pd3dCommandList->Close();
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+
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+ g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
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+
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+ g_pSwapChain->Present(1, 0); // Present with vsync
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+ //g_pSwapChain->Present(0, 0); // Present without vsync
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+
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+ UINT64 fenceValue = g_fenceLastSignaledValue + 1;
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+ g_pd3dCommandQueue->Signal(g_fence, fenceValue);
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+ g_fenceLastSignaledValue = fenceValue;
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+ frameCtxt->FenceValue = fenceValue;
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+ }
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-void CleanupRenderTarget()
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-{
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WaitForLastSubmittedFrame();
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+ ImGui_ImplDX12_Shutdown();
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+ ImGui_ImplWin32_Shutdown();
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+ ImGui::DestroyContext();
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- for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
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- if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
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+ CleanupDeviceD3D();
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+ ::DestroyWindow(hwnd);
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+ ::UnregisterClass(wc.lpszClassName, wc.hInstance);
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+
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+ return 0;
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}
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-HRESULT CreateDeviceD3D(HWND hWnd)
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+// Helper functions
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+
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+bool CreateDeviceD3D(HWND hWnd)
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{
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// Setup swap chain
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DXGI_SWAP_CHAIN_DESC1 sd;
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@@ -151,16 +244,16 @@ HRESULT CreateDeviceD3D(HWND hWnd)
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D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
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if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
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- return E_FAIL;
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+ return false;
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{
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D3D12_DESCRIPTOR_HEAP_DESC desc = {};
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- desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
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+ desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
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desc.NumDescriptors = NUM_BACK_BUFFERS;
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- desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
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- desc.NodeMask = 1;
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+ desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
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+ desc.NodeMask = 1;
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if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
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- return E_FAIL;
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+ return false;
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SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
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D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
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@@ -177,32 +270,32 @@ HRESULT CreateDeviceD3D(HWND hWnd)
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desc.NumDescriptors = 1;
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desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
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if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
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- return E_FAIL;
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+ return false;
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}
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{
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D3D12_COMMAND_QUEUE_DESC desc = {};
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- desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
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- desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
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+ desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
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+ desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
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desc.NodeMask = 1;
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if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
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- return E_FAIL;
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+ return false;
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}
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for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
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if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
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- return E_FAIL;
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+ return false;
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if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
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g_pd3dCommandList->Close() != S_OK)
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- return E_FAIL;
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+ return false;
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if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
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- return E_FAIL;
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+ return false;
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g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
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if (g_fenceEvent == NULL)
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- return E_FAIL;
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+ return false;
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{
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IDXGIFactory4* dxgiFactory = NULL;
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@@ -210,7 +303,7 @@ HRESULT CreateDeviceD3D(HWND hWnd)
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if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK ||
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dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1) != S_OK ||
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swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain)) != S_OK)
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- return E_FAIL;
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+ return false;
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swapChain1->Release();
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dxgiFactory->Release();
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g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
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@@ -218,8 +311,7 @@ HRESULT CreateDeviceD3D(HWND hWnd)
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}
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CreateRenderTarget();
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-
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- return S_OK;
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+ return true;
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}
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void CleanupDeviceD3D()
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@@ -238,193 +330,115 @@ void CleanupDeviceD3D()
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if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
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}
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-extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
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-LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
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+void CreateRenderTarget()
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{
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- if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
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- return true;
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|
|
-
|
|
|
- switch (msg)
|
|
|
+ ID3D12Resource* pBackBuffer;
|
|
|
+ for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
|
|
|
{
|
|
|
- case WM_SIZE:
|
|
|
- if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
|
|
|
- {
|
|
|
- ImGui_ImplDX12_InvalidateDeviceObjects();
|
|
|
- CleanupRenderTarget();
|
|
|
- ResizeSwapChain(hWnd, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
|
|
|
- CreateRenderTarget();
|
|
|
- ImGui_ImplDX12_CreateDeviceObjects();
|
|
|
- }
|
|
|
- return 0;
|
|
|
- case WM_SYSCOMMAND:
|
|
|
- if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
|
|
|
- return 0;
|
|
|
- break;
|
|
|
- case WM_DESTROY:
|
|
|
- PostQuitMessage(0);
|
|
|
- return 0;
|
|
|
+ g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer));
|
|
|
+ g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, g_mainRenderTargetDescriptor[i]);
|
|
|
+ g_mainRenderTargetResource[i] = pBackBuffer;
|
|
|
}
|
|
|
- return DefWindowProc(hWnd, msg, wParam, lParam);
|
|
|
}
|
|
|
|
|
|
-int main(int, char**)
|
|
|
+void CleanupRenderTarget()
|
|
|
{
|
|
|
- // Create application window
|
|
|
- WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
|
|
|
- RegisterClassEx(&wc);
|
|
|
- HWND hwnd = CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
|
|
|
+ WaitForLastSubmittedFrame();
|
|
|
|
|
|
- // Initialize Direct3D
|
|
|
- if (CreateDeviceD3D(hwnd) < 0)
|
|
|
- {
|
|
|
- CleanupDeviceD3D();
|
|
|
- UnregisterClass(wc.lpszClassName, wc.hInstance);
|
|
|
- return 1;
|
|
|
- }
|
|
|
+ for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
|
|
|
+ if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
|
|
|
+}
|
|
|
|
|
|
- // Show the window
|
|
|
- ShowWindow(hwnd, SW_SHOWDEFAULT);
|
|
|
- UpdateWindow(hwnd);
|
|
|
+void WaitForLastSubmittedFrame()
|
|
|
+{
|
|
|
+ FrameContext* frameCtxt = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
|
|
|
|
|
|
- // Setup Dear ImGui context
|
|
|
- IMGUI_CHECKVERSION();
|
|
|
- ImGui::CreateContext();
|
|
|
- ImGuiIO& io = ImGui::GetIO(); (void)io;
|
|
|
- //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
|
|
|
+ UINT64 fenceValue = frameCtxt->FenceValue;
|
|
|
+ if (fenceValue == 0)
|
|
|
+ return; // No fence was signaled
|
|
|
|
|
|
- // Setup Dear ImGui style
|
|
|
- ImGui::StyleColorsDark();
|
|
|
- //ImGui::StyleColorsClassic();
|
|
|
+ frameCtxt->FenceValue = 0;
|
|
|
+ if (g_fence->GetCompletedValue() >= fenceValue)
|
|
|
+ return;
|
|
|
|
|
|
- // Setup Platform/Renderer bindings
|
|
|
- ImGui_ImplWin32_Init(hwnd);
|
|
|
- ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
|
|
|
- DXGI_FORMAT_R8G8B8A8_UNORM,
|
|
|
- g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
|
|
|
- g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
|
|
|
+ g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
|
|
|
+ WaitForSingleObject(g_fenceEvent, INFINITE);
|
|
|
+}
|
|
|
|
|
|
- // Load Fonts
|
|
|
- // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
|
|
|
- // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
|
|
|
- // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
|
|
|
- // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
|
|
|
- // - Read 'misc/fonts/README.txt' for more instructions and details.
|
|
|
- // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
|
|
|
- //io.Fonts->AddFontDefault();
|
|
|
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
|
|
|
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
|
|
|
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
|
|
|
- //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
|
|
|
- //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
|
|
|
- //IM_ASSERT(font != NULL);
|
|
|
+FrameContext* WaitForNextFrameResources()
|
|
|
+{
|
|
|
+ UINT nextFrameIndex = g_frameIndex + 1;
|
|
|
+ g_frameIndex = nextFrameIndex;
|
|
|
|
|
|
- bool show_demo_window = true;
|
|
|
- bool show_another_window = false;
|
|
|
- ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
|
|
|
+ HANDLE waitableObjects[] = { g_hSwapChainWaitableObject, NULL };
|
|
|
+ DWORD numWaitableObjects = 1;
|
|
|
|
|
|
- // Main loop
|
|
|
- MSG msg;
|
|
|
- ZeroMemory(&msg, sizeof(msg));
|
|
|
- while (msg.message != WM_QUIT)
|
|
|
+ FrameContext* frameCtxt = &g_frameContext[nextFrameIndex % NUM_FRAMES_IN_FLIGHT];
|
|
|
+ UINT64 fenceValue = frameCtxt->FenceValue;
|
|
|
+ if (fenceValue != 0) // means no fence was signaled
|
|
|
{
|
|
|
- // Poll and handle messages (inputs, window resize, etc.)
|
|
|
- // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
|
|
|
- // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
|
|
|
- // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
|
|
|
- // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
|
|
|
- if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
|
|
|
- {
|
|
|
- TranslateMessage(&msg);
|
|
|
- DispatchMessage(&msg);
|
|
|
- continue;
|
|
|
- }
|
|
|
+ frameCtxt->FenceValue = 0;
|
|
|
+ g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
|
|
|
+ waitableObjects[1] = g_fenceEvent;
|
|
|
+ numWaitableObjects = 2;
|
|
|
+ }
|
|
|
|
|
|
- // Start the Dear ImGui frame
|
|
|
- ImGui_ImplDX12_NewFrame();
|
|
|
- ImGui_ImplWin32_NewFrame();
|
|
|
- ImGui::NewFrame();
|
|
|
+ WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE);
|
|
|
|
|
|
- // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
|
|
|
- if (show_demo_window)
|
|
|
- ImGui::ShowDemoWindow(&show_demo_window);
|
|
|
+ return frameCtxt;
|
|
|
+}
|
|
|
|
|
|
- // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
|
|
|
- {
|
|
|
- static float f = 0.0f;
|
|
|
- static int counter = 0;
|
|
|
+void ResizeSwapChain(HWND hWnd, int width, int height)
|
|
|
+{
|
|
|
+ DXGI_SWAP_CHAIN_DESC1 sd;
|
|
|
+ g_pSwapChain->GetDesc1(&sd);
|
|
|
+ sd.Width = width;
|
|
|
+ sd.Height = height;
|
|
|
|
|
|
- ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
|
|
|
+ IDXGIFactory4* dxgiFactory = NULL;
|
|
|
+ g_pSwapChain->GetParent(IID_PPV_ARGS(&dxgiFactory));
|
|
|
|
|
|
- ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
|
|
|
- ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
|
|
|
- ImGui::Checkbox("Another Window", &show_another_window);
|
|
|
+ g_pSwapChain->Release();
|
|
|
+ CloseHandle(g_hSwapChainWaitableObject);
|
|
|
|
|
|
- ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
|
|
|
- ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
|
|
|
+ IDXGISwapChain1* swapChain1 = NULL;
|
|
|
+ dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1);
|
|
|
+ swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain));
|
|
|
+ swapChain1->Release();
|
|
|
+ dxgiFactory->Release();
|
|
|
|
|
|
- if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
|
|
|
- counter++;
|
|
|
- ImGui::SameLine();
|
|
|
- ImGui::Text("counter = %d", counter);
|
|
|
+ g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
|
|
|
|
|
|
- ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
|
|
|
- ImGui::End();
|
|
|
- }
|
|
|
+ g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
|
|
|
+ assert(g_hSwapChainWaitableObject != NULL);
|
|
|
+}
|
|
|
|
|
|
- // 3. Show another simple window.
|
|
|
- if (show_another_window)
|
|
|
+// Win32 message handler
|
|
|
+extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
|
|
|
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
|
|
|
+{
|
|
|
+ if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
|
|
|
+ return true;
|
|
|
+
|
|
|
+ switch (msg)
|
|
|
+ {
|
|
|
+ case WM_SIZE:
|
|
|
+ if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
|
|
|
{
|
|
|
- ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
|
|
|
- ImGui::Text("Hello from another window!");
|
|
|
- if (ImGui::Button("Close Me"))
|
|
|
- show_another_window = false;
|
|
|
- ImGui::End();
|
|
|
+ ImGui_ImplDX12_InvalidateDeviceObjects();
|
|
|
+ CleanupRenderTarget();
|
|
|
+ ResizeSwapChain(hWnd, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
|
|
|
+ CreateRenderTarget();
|
|
|
+ ImGui_ImplDX12_CreateDeviceObjects();
|
|
|
}
|
|
|
-
|
|
|
- // Rendering
|
|
|
- FrameContext* frameCtxt = WaitForNextFrameResources();
|
|
|
- UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
|
|
|
- frameCtxt->CommandAllocator->Reset();
|
|
|
-
|
|
|
- D3D12_RESOURCE_BARRIER barrier = {};
|
|
|
- barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
|
|
|
- barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
|
|
|
- barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
|
|
|
- barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
|
|
|
- barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
|
|
|
- barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
|
|
|
-
|
|
|
- g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
|
|
|
- g_pd3dCommandList->ResourceBarrier(1, &barrier);
|
|
|
- g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_color, 0, NULL);
|
|
|
- g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
|
|
|
- g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
|
|
|
- ImGui::Render();
|
|
|
- ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
|
|
|
- barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
|
|
|
- barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
|
|
|
- g_pd3dCommandList->ResourceBarrier(1, &barrier);
|
|
|
- g_pd3dCommandList->Close();
|
|
|
-
|
|
|
- g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
|
|
|
-
|
|
|
- g_pSwapChain->Present(1, 0); // Present with vsync
|
|
|
- //g_pSwapChain->Present(0, 0); // Present without vsync
|
|
|
-
|
|
|
- UINT64 fenceValue = g_fenceLastSignaledValue + 1;
|
|
|
- g_pd3dCommandQueue->Signal(g_fence, fenceValue);
|
|
|
- g_fenceLastSignaledValue = fenceValue;
|
|
|
- frameCtxt->FenceValue = fenceValue;
|
|
|
+ return 0;
|
|
|
+ case WM_SYSCOMMAND:
|
|
|
+ if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
|
|
|
+ return 0;
|
|
|
+ break;
|
|
|
+ case WM_DESTROY:
|
|
|
+ ::PostQuitMessage(0);
|
|
|
+ return 0;
|
|
|
}
|
|
|
-
|
|
|
- WaitForLastSubmittedFrame();
|
|
|
- ImGui_ImplDX12_Shutdown();
|
|
|
- ImGui_ImplWin32_Shutdown();
|
|
|
- ImGui::DestroyContext();
|
|
|
-
|
|
|
- CleanupDeviceD3D();
|
|
|
- DestroyWindow(hwnd);
|
|
|
- UnregisterClass(wc.lpszClassName, wc.hInstance);
|
|
|
-
|
|
|
- return 0;
|
|
|
+ return ::DefWindowProc(hWnd, msg, wParam, lParam);
|
|
|
}
|
omar