// ImGui - standalone example application for DirectX 11 #include <imgui.h> #include "imgui_impl_dx11.h" #include <d3d11.h> #include <d3dcompiler.h> #define DIRECTINPUT_VERSION 0x0800 #include <dinput.h> // 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); g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL); 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; #ifdef _DEBUG createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG; #endif D3D_FEATURE_LEVEL featureLevel; const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, }; if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK) return E_FAIL; // Setup rasterizer { D3D11_RASTERIZER_DESC RSDesc; memset(&RSDesc, 0, sizeof(D3D11_RASTERIZER_DESC)); RSDesc.FillMode = D3D11_FILL_SOLID; RSDesc.CullMode = D3D11_CULL_NONE; RSDesc.FrontCounterClockwise = FALSE; RSDesc.DepthBias = 0; RSDesc.SlopeScaledDepthBias = 0.0f; RSDesc.DepthBiasClamp = 0; RSDesc.DepthClipEnable = TRUE; RSDesc.ScissorEnable = TRUE; RSDesc.AntialiasedLineEnable = FALSE; RSDesc.MultisampleEnable = (sd.SampleDesc.Count > 1) ? TRUE : FALSE; ID3D11RasterizerState* pRState = NULL; g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState); g_pd3dDeviceContext->RSSetState(pRState); pRState->Release(); } 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_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) { if (ImGui_ImplDX11_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, L"ImGui Example", NULL }; RegisterClassEx(&wc); HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL); // Initialize Direct3D if (CreateDeviceD3D(hwnd) < 0) { CleanupDeviceD3D(); UnregisterClass(L"ImGui Example", wc.hInstance); return 1; } // Show the window ShowWindow(hwnd, SW_SHOWDEFAULT); UpdateWindow(hwnd); // Setup ImGui binding ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext); //ImGuiIO& io = ImGui::GetIO(); //ImFont* my_font0 = io.Fonts->AddFontDefault(); //ImFont* my_font1 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f); //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/Karla-Regular.ttf", 16.0f); //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1; //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1; //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese()); bool show_test_window = true; bool show_another_window = false; ImVec4 clear_col = ImColor(114, 144, 154); // Main loop MSG msg; ZeroMemory(&msg, sizeof(msg)); while (msg.message != WM_QUIT) { 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 appears in a window automatically called "Debug" { static float f = 0.0f; ImGui::Text("Hello, world!"); ImGui::SliderFloat("float", &f, 0.0f, 1.0f); ImGui::ColorEdit3("clear color", (float*)&clear_col); if (ImGui::Button("Test Window")) show_test_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, this time using an explicit Begin/End pair if (show_another_window) { ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver); ImGui::Begin("Another Window", &show_another_window); ImGui::Text("Hello"); ImGui::End(); } // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow() if (show_test_window) { ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver); // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly! ImGui::ShowTestWindow(&show_test_window); } // Rendering g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col); ImGui::Render(); g_pSwapChain->Present(0, 0); } ImGui_ImplDX11_Shutdown(); CleanupDeviceD3D(); UnregisterClass(L"ImGui Example", wc.hInstance); return 0; }