glsl‑specular‑beckmann is a tiny GLSL shader module that implements the Beckmann micro‑facet distribution for calculating specular highlights. It exports a single function `beckmann(lightDir, eyeDir, normal, roughness)` that returns the specular power based on light direction, view direction, surface normal and a roughness parameter, and is intended for WebGL developers using **glslify**/npm to add physically‑based lighting to their fragment shaders.