README

This is a very basic library for drawing over other windows using a transparent overlay window. It supports Linux distributions using X11. Wayland is not supported directly, but this should work with XWayland. This has been tested on Ubuntu 17.10 only.

I originally used this as part of cheat software for the game Rust. See my post here for information on implementing 3D projection in software.

Dependencies

• Cairo
• Xlib
  • libXfixes
  • libXcomposite

For Ubuntu 17.10:

sudo apt-get update; sudo apt-get install -y libcairo2 libcairo2-dev libcairo2-doc libx11-6 libx11-dev libx11-doc libxfixes3 libxfixes-dev libxcomposite1 libxcomposite-dev

Compilation

git clone https://github.com/shaggyrogers/X11Overlay.git
cd X11Overlay/
make

• "make" will build the library
• "make test" will build both the library and test program

Usage

TODO

Known Issues

The main issues are:

• Does not draw over fullscreen applications
• Overlay windows have title bars
• Flickering still an issue
• No ability to select one particular window to draw over

TODO

• Clean up and refactor
• Add unit & integration tests
• Add Vector2, Vector3 structs
• Use singleton
• Add Python interface, C# and Python examples
• Allow drawing over fullscreen applications
• Ignore window manager, no title bar etc.
• Fix flickering issue
• Allow for drawing over a given window, automatically updating position and dimensions

License

MIT - see LICENSE.md