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Dear ImGui plugin for Godot 4

screenshot

Dear ImGui is a popular library for rapidly building tools for debugging and development. This plugin allows you to use ImGui in Godot with C# (with the aid of ImGui.NET), C++, and GDScript.

After installing the plugin, usage is as simple as this:

public partial class MyNode : Node
{
    public override void _Process(double delta)
    {
        ImGui.Begin("ImGui on Godot 4");
        ImGui.Text("hello world");
        ImGui.End();
    }
}
extends Node

func _process(delta):
    ImGui.Begin("My Window")
    ImGui.Text("hello from GDScript")
    ImGui.End()

Download

If you only need C# support with basic features, you can use the csharp-only package. Otherwise, download the full package which includes GDExtension binaries.

download

You can also find Dear ImGui for Godot in the Asset Library.

Getting Started (C#)

  1. Create a project and, if you haven't already added some C# code, use Project > Tools > C# > Create C# solution.

  2. Install the plugin by copying over the addons folder. Or use GodotEnv.

  3. In Visual Studio or another IDE, open the solution and allow unsafe code, and install ImGui.NET with NuGet. Set your target framework to .NET 8 or later. Save and return to Godot.

    (If you prefer to manually edit the .csproj instead, refer to the demo csproj for the necessary modifications.)

Important

If you are using the GDExtension, you must use a version of ImGui.NET which matches the version that the GDExtension was built with.

  1. Back in the Godot editor, click Build.

  2. Enable the plugin in Project > Project Settings > Plugins.

Getting Started (GDScript)

  1. Install the plugin by copying over the addons folder from the full package which includes the GDExtension.

  2. Enable the plugin in Project > Project Settings > Plugins.

Usage

In any Node's _Process method, use ImGuiNET to create your GUI. Just don't set the ProcessPriority in any of your Nodes to either int.MinValue or int.MaxValue.

Signals

You can also connect to the imgui_layout signal, and use ImGui in the method which handles that signal. This is strongly recommended if you're using process thread groups in Godot 4.1 or later.

ImGuiGD.Connect(OnImGuiLayout);

Configuration

If you want to customize fonts or other settings, cr