hugo-dz/spritefusion-sprite-normals is a Rust tool that creates normal maps from pixel art sprites and animation sprite sheets. What is introduced here is a tool published on a GitHub repository, and FACTS records no latest release for it. According to the repository description, it processes still images and animations to build surface orientation maps used for lighting response. It has 758 stars and an MIT license.
A normal map is a map that shows which direction the surface of an image faces, and it is used for lighting effects. According to the README, the tool derives surface curvature from the silhouettes and shading of pixel art, while preserving the original resolution and transparency. It handles not only a single sprite but also bundles of multiple images and animations. It ships as a command-line CLI and as a WebAssembly library that can be used in the browser, and both forms share the same generator. The README describes this as a way to make 2D sprites respond to moving light, so that they can be used in 2.5D games.
That said, the confirmed features are limited to generating normal maps from silhouettes and shading. The provided facts contain no performance comparison against other tools and no evaluation of the results across several art styles. So rather than asserting that the quality of the output or the range of its applicability is broad, it is more accurate to see it as a generation tool tailored to 2D sprite work that wants stronger lighting response.