Bevy Fast Light

Simple 2D lighting for Bevy focused on performance over features.

:warning: | This is still in development and not at all feature complete.

Features

• Simple and fast AmbientLight2d light source.
• Simple and fast Light2dOccluder that blocks any non-ambient light using the shape of any Mesh2d.
• Simple and fast PointLight2d light source with falloff configurable via inner and outer radius.

Limitations

• There is currently no shadow casting for light occluders.

Usage

Take a look at /examples to find out how to use this crate.

Examples

ambient_light.rs

Scene with a light sky colored AmbientLight2d with a lower intensity, a green Rectangle as background and an amber PointLight2d.

occluder.rs

Scene with a light sky colored AmbientLight2d with a lower intensity, a green Rectangle as background, an amber PointLight2d and a Light2dOccluder.

point_light.rs

Scene with a green Rectangle as background and an amber PointLight2d.

texture_scale.rs

Scene with a green Rectangle as background and an amber PointLight2d using a lower texture_scale.

Alternatives

• bevy_firefly
• bevy_2d_screen_space_lightmaps
• bevy_light_2d
• bevy_lit

Resources

Code

• Bevy Example - Custom Post Processing
• Bevy Example - Custom Render Phase

Articles

• hackmd.io - Bevy's Rendering Crates
• hackmd.io - The Abyss
• slembcke.net - 2D Lighting Techniques
• slembcke.net - 2D Lighting with Hard Shadows
• WebGPU Shading Language