// ImGui - standalone example application for DirectX 11 // If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. #include #include "imgui_impl_dx11.h" #include #define DIRECTINPUT_VERSION 0x0800 #include #include // Data static ID3D11Device* g_pd3dDevice = NULL; static ID3D11DeviceContext* g_pd3dDeviceContext = NULL; static IDXGISwapChain* g_pSwapChain = NULL; static ID3D11RenderTargetView* g_mainRenderTargetView = NULL; void CreateRenderTarget() { DXGI_SWAP_CHAIN_DESC sd; g_pSwapChain->GetDesc(&sd); // Create the render target ID3D11Texture2D* pBackBuffer; D3D11_RENDER_TARGET_VIEW_DESC render_target_view_desc; ZeroMemory(&render_target_view_desc, sizeof(render_target_view_desc)); render_target_view_desc.Format = sd.BufferDesc.Format; render_target_view_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D; g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer); g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView); pBackBuffer->Release(); } void CleanupRenderTarget() { if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; } } HRESULT CreateDeviceD3D(HWND hWnd) { // Setup swap chain DXGI_SWAP_CHAIN_DESC sd; { ZeroMemory(&sd, sizeof(sd)); sd.BufferCount = 2; sd.BufferDesc.Width = 0; sd.BufferDesc.Height = 0; sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; sd.BufferDesc.RefreshRate.Numerator = 60; sd.BufferDesc.RefreshRate.Denominator = 1; sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH; sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; sd.OutputWindow = hWnd; sd.SampleDesc.Count = 1; sd.SampleDesc.Quality = 0; sd.Windowed = TRUE; sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD; } UINT createDeviceFlags = 0; //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG; D3D_FEATURE_LEVEL featureLevel; const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, }; if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK) return E_FAIL; CreateRenderTarget(); return S_OK; } void CleanupDeviceD3D() { CleanupRenderTarget(); if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; } if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; } if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; } } 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_ImplDX11_InvalidateDeviceObjects(); CleanupRenderTarget(); g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0); CreateRenderTarget(); ImGui_ImplDX11_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; } return DefWindowProc(hWnd, msg, wParam, lParam); } int main(int, char**) { // Create application window WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, _T("ImGui Example"), NULL }; RegisterClassEx(&wc); HWND hwnd = CreateWindow(_T("ImGui Example"), _T("ImGui DirectX11 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL); // Initialize Direct3D if (CreateDeviceD3D(hwnd) < 0) { CleanupDeviceD3D(); UnregisterClass(_T("ImGui Example"), wc.hInstance); return 1; } // Show the window ShowWindow(hwnd, SW_SHOWDEFAULT); UpdateWindow(hwnd); // Setup ImGui binding ImGuiIO& io = ImGui::GetIO(); (void)io; ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext); //io.NavFlags |= ImGuiNavFlags_EnableKeyboard; // Setup style ImGui::StyleColorsClassic(); //ImGui::StyleColorsDark(); // 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 'extra_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("../../extra_fonts/Roboto-Medium.ttf", 16.0f); //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f); //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f); //io.Fonts->AddFontFromFileTTF("../../extra_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); bool show_demo_window = true; bool show_another_window = false; ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); // Main loop MSG msg; ZeroMemory(&msg, sizeof(msg)); while (msg.message != WM_QUIT) { // 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; } ImGui_ImplDX11_NewFrame(); // 1. Show a simple window. // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug". { static float f = 0.0f; ImGui::Text("Hello, world!"); // Some text (you can use a format string too) ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float as a slider from 0.0f to 1.0f ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats as a color if (ImGui::Button("Demo Window")) // Use buttons to toggle our bools. We could use Checkbox() as well. show_demo_window ^= 1; if (ImGui::Button("Another Window")) show_another_window ^= 1; ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); } // 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name the window. if (show_another_window) { ImGui::Begin("Another Window", &show_another_window); ImGui::Text("Hello from another window!"); ImGui::End(); } // 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). if (show_demo_window) { ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly! ImGui::ShowDemoWindow(&show_demo_window); } // Rendering g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL); g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_color); ImGui::Render(); g_pSwapChain->Present(1, 0); // Present with vsync //g_pSwapChain->Present(0, 0); // Present without vsync } ImGui_ImplDX11_Shutdown(); CleanupDeviceD3D(); UnregisterClass(_T("ImGui Example"), wc.hInstance); return 0; }