cimgui-go

This project aims to generate go wrapper for Dear ImGui.

It comes with a default backend with GLFW 3.3 and OpenGL 3.2.

It works on macOS(arm64/x86), windows(x64), Arch Linux/KDE and Fedora Workstation 36, idealy other linux GUI should works but I don't have a linux machine to test it. Check out examples, cd in and go run ..

Current solution is:

1. Use cimgui's lua generator to generate function and struct definition as json.
2. Generate proper go code from the definition (via manual crafted go program /cmd/codegen).
3. Use the backend implementation from imgui.
4. Use github workflow to compile cimgui and glfw to static lib and place them in /lib folder for further link.

Supported Backends

In order to make it easy in use, cimgui-go implemented a few imgui backends. To see more details about using a specific backend, take a look at the examples.

We support the following backends:

• GLFW. Note:: It is disabled by default, use enable_cimgui_glfw go build tag to enable it.
• SDL2. Note:: It is disabled by default, use enable_cimgui_sdl2 go build tag to enable it.
• Ebitengine (import "github.com/AllenDang/cimgui-go/ebitenbackend").

Important: Remember that various solution use different C libraries that can conflict with each other. It is recommended to not enable e.g. GLFW and SDL backends at the same time as it may result in linker crash.

Naming convention

• For functions, 'Im/ImGui/ig' is trimmed.
• If function comes from imgui_internal.h, Internal prefix is added.
• Struct fields (if any exported) are prefixed with word Field

Function coverage

Currently most of the functions are generated, except memory related stuff (eg. memory allocator, storage management, etc...). If you find any function is missing, report an issue.

Generate binding

Install GNU make and run make to re-generate bunding.

Update

To update to the latest version of dependencies, run make update. After doing this, commit changes and navigate to GitHub. In Actions tab, manually trigger Compile cimgui workflows.

How does it work?

• cimgui/ directory holds C binding for C++ Dear ImGui libraries
• generator bases on cimgui/{package_name}_templates and generates all necessary GO/C code
• libs/ contains pre-built shared libraries. cimgui.go includes and uses to decrease building time.