playcanvas/build/playcanvas/src/scene/shader-lib/wgsl/chunks/lit/frag/reflectionSheen.d.ts

PlayCanvas WebGL game engine

declare const _default: "\n\nfn addReflectionSheen(worldNormal: vec3f, viewDir: vec3f, gloss: f32) {\n    let NoV: f32 = dot(worldNormal, viewDir);\n    let alphaG: f32 = gloss * gloss;\n\n    // Avoid using a LUT and approximate the values analytically\n    let a: f32 = select(\n        -8.48 * alphaG + 14.3 * gloss - 9.95,\n        -339.2 * alphaG + 161.4 * gloss - 25.9,\n        gloss < 0.25\n    );\n    let b: f32 = select(\n        1.97 * alphaG - 3.27 * gloss + 0.72,\n        44.0 * alphaG - 23.7 * gloss + 3.26,\n        gloss < 0.25\n    );\n    let dg_add: f32 = select(\n        0.1 * ( gloss - 0.25 ),\n        0.0,\n        gloss < 0.25\n    );\n    let dg: f32 = exp( a * NoV + b ) + dg_add;\n    sReflection = sReflection + (calcReflection(worldNormal, 0.0) * saturate(dg));\n}";
export default _default;