Winit Backend

The Winit backend uses the winit ↗ library to interact with the windowing system.

The Winit backend supports practically all relevant operating systems and windowing systems, including macOS, Windows, Linux with Wayland and X11.

The Winit backend supports different renderers. They can be explicitly selected for use through the SLINT_BACKEND environment variable.

Renderer name	Supported/Required Graphics APIs	SLINT_BACKEND value to select renderer
FemtoVG	OpenGL	winit-femtovg
Skia	OpenGL, Metal, Direct3D, Software-rendering	winit-skia
Skia Software	Software-only rendering with Skia	winit-skia-software
Skia OpenGL	OpenGL rendering with Skia	winit-skia-opengl
software	Software-rendering, no GPU required	winit-software

If no renderer is explicitly set, the backend will first try to use the Skia renderer, if it was enabled at compile time. If that fails, it will fall back to the FemtoVG renderer, and if that also fails, it will use the software renderer.

Configuration Options

The Winit backend reads and interprets the following environment variables:

Name	Accepted Values	Description
SLINT_FULLSCREEN	any value	If this variable is set, every window is shown in fullscreen mode.