cimgui-go for ebiten-imgui

This is a fork of the AllenDang/cimgui-go library with the sole purpose to be compatible with Ebitengine. The original GLFW 3.3 and OpenGL 3.2 backends were removed because the C/C++ dependencies are incompatible (and in this use case, redundant). You should most definitely use the original repository (AllenDang/cimgui-go) if you are not going to use ebiten-imgui.

cimgui-go

This project aims to generate go wrapper for Dear ImGui.

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 (currently glfw and opengl3).
4. Use github workflow to compile cimgui and glfw to static lib and place them in /lib folder for further link.

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 workflows for each platform.

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.