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. |