OverlaySharp

A high-performance .NET library for creating transparent window overlays on a target process using OpenGL and SkiaSharp.

Fully compatible to be published as Native AOT(Windows).

Features

• Create a transparent window overlay on a target processes
• Hardware-accelerated rendering using OpenGL
• High-performance graphics with SkiaSharp
• Native AOT (Ahead of Time) compilation support
• Windows platform support
• Basic drawing of various shapes, images and text.

NuGet

.NET CLI

dotnet add package OverlaySharp

Package Reference

<PackageReference Include="OverlaySharp" Version="1.0.0" />

Requirements

• .NET 8
• A Windows environment
• A functioning OpenGL driver
  • This means you need a GPU - e.g. an integrated GPU (Intel), an NVIDIA GPU or AMD GPU, all of which should support OpenGL.

Examples

See the sample project.

public class YourClass(nint targetWindowHandle) : OverlayWindow(targetWindowHandle)
{
    public override void Renderer(IGraphics graphics)
    {
      // Perform drawing operations through IGraphics here...
    }
}

Contributing

Feel free to contribute! 🥸

Acknowledgments

• SkiaSharp
• OpenGL
• GameOverlay.Net