Immediate mode GUI framework made specifically for Unity. Written in pure C#, has zero per-frame allocations, is somewhat performant, has no external dependencies, and works on basically any platform that Unity supports and that has either a touchscreen or mouse and keyboard. A WebGL demo can be seen here.
The basic principle is the same as in Dear ImGui: every frame, we generate a mesh with all the controls in it, split into different draw calls when needed, and render it to the render texture. For simple cases, the UI can be drawn with a single draw call (when no masks or different materials are involved). Using the ImCanvasBackend component, the whole UI can be integrated into the Canvas hierarchy and used like any other UGUI component.
You can install Imui as a git package in Unity Package Manager
Dark and light themes are supported, check out demo here.
- Window
- Button
- Checkbox
- Slider
- Label
- Image
- Text/Number Editor
- Dropdown
- Scroll Bar
- Foldout
- Separator
- Tree
- Radio Group
- Listbox
- Menu
- Tooltip
Implements an automatic layout system with vertical, horizontal, and grid layout groups.
At this stage, it's not ready for, well, anything except poking and tweaking around. Any existing API could be changed anytime if I have the desire or time to continue developing it.