# Conflicts: # docs/CHANGELOG.txt # examples/example_win32_directx11/main.cpp # examples/example_win32_directx9/main.cpp # examples/imgui_impl_win32.cpp # examples/imgui_impl_win32.h # imgui.cppfeatures/sdl_renderer3_multiviewports
Omar
ago%!(EXTRA string=5 years)
commit
bb1e6f8af6
30 changed files with 526 additions and 189 deletions
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#
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# You will need SDL2 (http://www.libsdl.org):
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# brew install sdl2
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#
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#CXX = g++
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#CXX = clang++
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EXE = example_sdl_metal
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SOURCES = main.mm
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SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_metal.mm
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SOURCES += ../../imgui.cpp ../../imgui_widgets.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
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OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
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LIBS = -framework Metal -framework MetalKit -framework Cocoa -framework IOKit -framework CoreVideo -framework QuartzCore
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LIBS += `sdl2-config --libs`
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LIBS += -L/usr/local/lib
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CXXFLAGS = -I../ -I../../ -I/usr/local/include
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CXXFLAGS += `sdl2-config --cflags`
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CXXFLAGS += -Wall -Wformat
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CFLAGS = $(CXXFLAGS)
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%.o:%.cpp |
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$(CXX) $(CXXFLAGS) -c -o $@ $<
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%.o:../%.cpp |
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$(CXX) $(CXXFLAGS) -c -o $@ $<
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%.o:../../%.cpp |
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$(CXX) $(CXXFLAGS) -c -o $@ $<
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%.o:../%.mm |
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$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
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%.o:%.mm |
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$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
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all: $(EXE) |
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@echo Build complete
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$(EXE): $(OBJS) |
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$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
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clean: |
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rm -f $(EXE) $(OBJS)
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// Dear ImGui: standalone example application for SDL2 + Metal |
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// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp. |
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// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.) |
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#include "imgui.h" |
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#include "imgui_impl_sdl.h" |
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#include "imgui_impl_metal.h" |
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#include <stdio.h> |
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#include <SDL.h> |
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#import <Metal/Metal.h> |
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#import <QuartzCore/QuartzCore.h> |
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int main(int, char**) |
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{ |
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// Setup Dear ImGui binding |
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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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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls |
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// Setup style |
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ImGui::StyleColorsDark(); |
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//ImGui::StyleColorsClassic(); |
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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 'docs/FONTS.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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// Setup SDL |
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// (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems, |
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// depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!) |
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0) |
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{ |
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printf("Error: %s\n", SDL_GetError()); |
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return -1; |
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} |
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// Inform SDL that we will be using metal for rendering. Without this hint initialization of metal renderer may fail. |
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SDL_SetHint(SDL_HINT_RENDER_DRIVER, "metal"); |
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SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL+Metal example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI); |
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if (window == NULL) |
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{ |
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printf("Error creating window: %s\n", SDL_GetError()); |
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return -2; |
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} |
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SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); |
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if (renderer == NULL) |
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{ |
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printf("Error creating renderer: %s\n", SDL_GetError()); |
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return -3; |
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} |
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CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_RenderGetMetalLayer(renderer); |
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layer.pixelFormat = MTLPixelFormatBGRA8Unorm; |
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ImGui_ImplMetal_Init(layer.device); |
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ImGui_ImplSDL2_InitForMetal(window); |
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id<MTLCommandQueue> commandQueue = [layer.device newCommandQueue]; |
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MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor new]; |
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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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float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f}; |
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// Main loop |
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bool done = false; |
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while (!done) |
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{ |
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@autoreleasepool |
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{ |
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// Poll and handle events (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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SDL_Event event; |
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while (SDL_PollEvent(&event)) |
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{ |
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ImGui_ImplSDL2_ProcessEvent(&event); |
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if (event.type == SDL_QUIT) |
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done = true; |
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if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window)) |
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done = true; |
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} |
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int width, height; |
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SDL_GetRendererOutputSize(renderer, &width, &height); |
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layer.drawableSize = CGSizeMake(width, height); |
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id<CAMetalDrawable> drawable = [layer nextDrawable]; |
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id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer]; |
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renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]); |
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renderPassDescriptor.colorAttachments[0].texture = drawable.texture; |
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renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear; |
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renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore; |
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id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor]; |
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[renderEncoder pushDebugGroup:@"ImGui demo"]; |
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// Start the Dear ImGui frame |
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ImGui_ImplMetal_NewFrame(renderPassDescriptor); |
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ImGui_ImplSDL2_NewFrame(window); |
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ImGui::NewFrame(); |
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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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// 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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ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it. |
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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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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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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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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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// 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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// Rendering |
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ImGui::Render(); |
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ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder); |
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[renderEncoder popDebugGroup]; |
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[renderEncoder endEncoding]; |
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[commandBuffer presentDrawable:drawable]; |
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[commandBuffer commit]; |
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} |
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} |
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// Cleanup |
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ImGui_ImplMetal_Shutdown(); |
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ImGui_ImplSDL2_Shutdown(); |
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ImGui::DestroyContext(); |
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SDL_DestroyRenderer(renderer); |
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SDL_DestroyWindow(window); |
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SDL_Quit(); |
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return 0; |
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} |
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