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Diffstat (limited to 'imgui-1.92.1/examples/example_sdl2_directx11/main.cpp')
| -rw-r--r-- | imgui-1.92.1/examples/example_sdl2_directx11/main.cpp | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/imgui-1.92.1/examples/example_sdl2_directx11/main.cpp b/imgui-1.92.1/examples/example_sdl2_directx11/main.cpp deleted file mode 100644 index 194dd0e..0000000 --- a/imgui-1.92.1/examples/example_sdl2_directx11/main.cpp +++ /dev/null @@ -1,259 +0,0 @@ -// Dear ImGui: standalone example application for SDL2 + DirectX 11 -// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.) - -// Learn about Dear ImGui: -// - FAQ https://dearimgui.com/faq -// - Getting Started https://dearimgui.com/getting-started -// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). -// - Introduction, links and more at the top of imgui.cpp - -#include "imgui.h" -#include "imgui_impl_sdl2.h" -#include "imgui_impl_dx11.h" -#include <d3d11.h> -#include <stdio.h> -#include <SDL.h> -#include <SDL_syswm.h> - -// Data -static ID3D11Device* g_pd3dDevice = nullptr; -static ID3D11DeviceContext* g_pd3dDeviceContext = nullptr; -static IDXGISwapChain* g_pSwapChain = nullptr; -static ID3D11RenderTargetView* g_mainRenderTargetView = nullptr; - -// Forward declarations of helper functions -bool CreateDeviceD3D(HWND hWnd); -void CleanupDeviceD3D(); -void CreateRenderTarget(); -void CleanupRenderTarget(); - -// Main code -int main(int, char**) -{ - // Setup SDL - // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems, - // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to the latest version of SDL is recommended!) -#ifdef _WIN32 - ::SetProcessDPIAware(); -#endif - if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0) - { - printf("Error: %s\n", SDL_GetError()); - return -1; - } - - // From 2.0.18: Enable native IME. -#ifdef SDL_HINT_IME_SHOW_UI - SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1"); -#endif - - // Setup window - float main_scale = ImGui_ImplSDL2_GetContentScaleForDisplay(0); - SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI); - SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+DirectX11 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, (int)(1280 * main_scale), (int)(720 * main_scale), window_flags); - if (window == nullptr) - { - printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError()); - return -1; - } - - SDL_SysWMinfo wmInfo; - SDL_VERSION(&wmInfo.version); - SDL_GetWindowWMInfo(window, &wmInfo); - HWND hwnd = (HWND)wmInfo.info.win.window; - - // Initialize Direct3D - if (!CreateDeviceD3D(hwnd)) - { - CleanupDeviceD3D(); - return 1; - } - - // Setup Dear ImGui context - IMGUI_CHECKVERSION(); - ImGui::CreateContext(); - ImGuiIO& io = ImGui::GetIO(); (void)io; - io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls - io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls - - // Setup Dear ImGui style - ImGui::StyleColorsDark(); - //ImGui::StyleColorsLight(); - - // Setup scaling - ImGuiStyle& style = ImGui::GetStyle(); - style.ScaleAllSizes(main_scale); // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again) - style.FontScaleDpi = main_scale; // Set initial font scale. (using io.ConfigDpiScaleFonts=true makes this unnecessary. We leave both here for documentation purpose) - - // Setup Platform/Renderer backends - ImGui_ImplSDL2_InitForD3D(window); - ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext); - - // 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 a nullptr. Please handle those errors in your application (e.g. use an assertion, or display an error and quit). - // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering. - // - Read 'docs/FONTS.md' 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 \\ ! - //style.FontSizeBase = 20.0f; - //io.Fonts->AddFontDefault(); - //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf"); - //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf"); - //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf"); - //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf"); - //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf"); - //IM_ASSERT(font != nullptr); - - // Our state - bool show_demo_window = true; - bool show_another_window = false; - ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); - - // Main loop - bool done = false; - while (!done) - { - // Poll and handle events (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, or clear/overwrite your copy of the mouse data. - // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data. - // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. - SDL_Event event; - while (SDL_PollEvent(&event)) - { - ImGui_ImplSDL2_ProcessEvent(&event); - if (event.type == SDL_QUIT) - done = true; - if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window)) - done = true; - if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window)) - { - // Release all outstanding references to the swap chain's buffers before resizing. - CleanupRenderTarget(); - g_pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0); - CreateRenderTarget(); - } - } - if (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) - { - SDL_Delay(10); - continue; - } - - // Start the Dear ImGui frame - ImGui_ImplDX11_NewFrame(); - ImGui_ImplSDL2_NewFrame(); - ImGui::NewFrame(); - - // 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); - - // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window. - { - static float f = 0.0f; - static int counter = 0; - - ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it. - - 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); - - 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 - - if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated) - counter++; - ImGui::SameLine(); - ImGui::Text("counter = %d", counter); - - ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate); - ImGui::End(); - } - - // 3. Show another simple window. - if (show_another_window) - { - 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(); - } - - // Rendering - ImGui::Render(); - const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w }; - g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, nullptr); - g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha); - ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData()); - - g_pSwapChain->Present(1, 0); // Present with vsync - //g_pSwapChain->Present(0, 0); // Present without vsync - } - - // Cleanup - ImGui_ImplDX11_Shutdown(); - ImGui_ImplSDL2_Shutdown(); - ImGui::DestroyContext(); - - CleanupDeviceD3D(); - SDL_DestroyWindow(window); - SDL_Quit(); - - return 0; -} - -// Helper functions to use DirectX11 -bool 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(nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK) - return false; - - CreateRenderTarget(); - return true; -} - -void CleanupDeviceD3D() -{ - CleanupRenderTarget(); - if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = nullptr; } - if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = nullptr; } - if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = nullptr; } -} - -void CreateRenderTarget() -{ - ID3D11Texture2D* pBackBuffer; - g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer)); - g_pd3dDevice->CreateRenderTargetView(pBackBuffer, nullptr, &g_mainRenderTargetView); - pBackBuffer->Release(); -} - -void CleanupRenderTarget() -{ - if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = nullptr; } -} |