diff options
Diffstat (limited to '')
5 files changed, 505 insertions, 0 deletions
diff --git a/src/imgui/examples/example_glfw_opengl2/Makefile b/src/imgui/examples/example_glfw_opengl2/Makefile new file mode 100644 index 0000000..1f15c15 --- /dev/null +++ b/src/imgui/examples/example_glfw_opengl2/Makefile @@ -0,0 +1,81 @@ +# +# Cross Platform Makefile +# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X +# +# You will need GLFW (http://www.glfw.org): +# Linux: +# apt-get install libglfw-dev +# Mac OS X: +# brew install glfw +# MSYS2: +# pacman -S --noconfirm --needed mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw +# + +#CXX = g++ +#CXX = clang++ + +EXE = example_glfw_opengl2 +IMGUI_DIR = ../.. +SOURCES = main.cpp +SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp +SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui_impl_opengl2.cpp +OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES)))) +UNAME_S := $(shell uname -s) + +CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends +CXXFLAGS += -g -Wall -Wformat +LIBS = + +##--------------------------------------------------------------------- +## BUILD FLAGS PER PLATFORM +##--------------------------------------------------------------------- + +ifeq ($(UNAME_S), Linux) #LINUX + ECHO_MESSAGE = "Linux" + LIBS += -lGL `pkg-config --static --libs glfw3` + + CXXFLAGS += `pkg-config --cflags glfw3` + CFLAGS = $(CXXFLAGS) +endif + +ifeq ($(UNAME_S), Darwin) #APPLE + ECHO_MESSAGE = "Mac OS X" + LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo + LIBS += -L/usr/local/lib -L/opt/local/lib -L/opt/homebrew/lib + #LIBS += -lglfw3 + LIBS += -lglfw + + CXXFLAGS += -I/usr/local/include -I/opt/local/include -I/opt/homebrew/include + CFLAGS = $(CXXFLAGS) +endif + +ifeq ($(OS), Windows_NT) + ECHO_MESSAGE = "MinGW" + LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32 + + CXXFLAGS += `pkg-config --cflags glfw3` + CFLAGS = $(CXXFLAGS) +endif + +##--------------------------------------------------------------------- +## BUILD RULES +##--------------------------------------------------------------------- + +%.o:%.cpp + $(CXX) $(CXXFLAGS) -c -o $@ $< + +%.o:$(IMGUI_DIR)/%.cpp + $(CXX) $(CXXFLAGS) -c -o $@ $< + +%.o:$(IMGUI_DIR)/backends/%.cpp + $(CXX) $(CXXFLAGS) -c -o $@ $< + +all: $(EXE) + @echo Build complete for $(ECHO_MESSAGE) + +$(EXE): $(OBJS) + $(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS) + +clean: + rm -f $(EXE) $(OBJS) + diff --git a/src/imgui/examples/example_glfw_opengl2/build_win32.bat b/src/imgui/examples/example_glfw_opengl2/build_win32.bat new file mode 100644 index 0000000..24c0e08 --- /dev/null +++ b/src/imgui/examples/example_glfw_opengl2/build_win32.bat @@ -0,0 +1,8 @@ +@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler. +@set OUT_DIR=Debug +@set OUT_EXE=example_glfw_opengl2 +@set INCLUDES=/I..\.. /I..\..\backends /I..\libs\glfw\include +@set SOURCES=main.cpp ..\..\backends\imgui_impl_opengl2.cpp ..\..\backends\imgui_impl_glfw.cpp ..\..\imgui*.cpp +@set LIBS=/LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib +mkdir %OUT_DIR% +cl /nologo /Zi /MD /utf-8 %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% diff --git a/src/imgui/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj b/src/imgui/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj new file mode 100644 index 0000000..2aa2550 --- /dev/null +++ b/src/imgui/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj @@ -0,0 +1,186 @@ +<?xml version="1.0" encoding="utf-8"?> +<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> + <ItemGroup 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\ No newline at end of file diff --git a/src/imgui/examples/example_glfw_opengl2/main.cpp b/src/imgui/examples/example_glfw_opengl2/main.cpp new file mode 100644 index 0000000..5e47b00 --- /dev/null +++ b/src/imgui/examples/example_glfw_opengl2/main.cpp @@ -0,0 +1,166 @@ +// Dear ImGui: standalone example application for GLFW + OpenGL2, using legacy fixed pipeline +// (GLFW 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 + +// **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)** +// **Prefer using the code in the example_glfw_opengl2/ folder** +// See imgui_impl_glfw.cpp for details. + +#include "imgui.h" +#include "imgui_impl_glfw.h" +#include "imgui_impl_opengl2.h" +#include <stdio.h> +#ifdef __APPLE__ +#define GL_SILENCE_DEPRECATION +#endif +#include <GLFW/glfw3.h> + +// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers. +// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma. +// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio. +#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS) +#pragma comment(lib, "legacy_stdio_definitions") +#endif + +static void glfw_error_callback(int error, const char* description) +{ + fprintf(stderr, "GLFW Error %d: %s\n", error, description); +} + +// Main code +int main(int, char**) +{ + glfwSetErrorCallback(glfw_error_callback); + if (!glfwInit()) + return 1; + + // Create window with graphics context + GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL2 example", nullptr, nullptr); + if (window == nullptr) + return 1; + glfwMakeContextCurrent(window); + glfwSwapInterval(1); // Enable vsync + + // 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 Platform/Renderer backends + ImGui_ImplGlfw_InitForOpenGL(window, true); + ImGui_ImplOpenGL2_Init(); + + // 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). + // - 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. + // - 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 \\ ! + //io.Fonts->AddFontDefault(); + //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f); + //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese()); + //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 + while (!glfwWindowShouldClose(window)) + { + // 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. + glfwPollEvents(); + + // Start the Dear ImGui frame + ImGui_ImplOpenGL2_NewFrame(); + ImGui_ImplGlfw_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(); + int display_w, display_h; + glfwGetFramebufferSize(window, &display_w, &display_h); + glViewport(0, 0, display_w, display_h); + glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w); + glClear(GL_COLOR_BUFFER_BIT); + + // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!), + // you may need to backup/reset/restore other state, e.g. for current shader using the commented lines below. + //GLint last_program; + //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program); + //glUseProgram(0); + ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData()); + //glUseProgram(last_program); + + glfwMakeContextCurrent(window); + glfwSwapBuffers(window); + } + + // Cleanup + ImGui_ImplOpenGL2_Shutdown(); + ImGui_ImplGlfw_Shutdown(); + ImGui::DestroyContext(); + + glfwDestroyWindow(window); + glfwTerminate(); + + return 0; +} |