molstar/lib/mol-gl/shader/chunks/apply-interior-color.glsl.js

A comprehensive macromolecular library.

export const apply_interior_color = `
if (interior) {
    material.rgb = mix(material.rgb, uInteriorColor.rgb, uInteriorColor.a);

    float isf = clamp(uInteriorSubstance.a, 0.0, 0.99); // clamp to avoid artifacts
    metalness = mix(metalness, uInteriorSubstance.r, isf);
    roughness = mix(roughness, uInteriorSubstance.g, isf);
    bumpiness = mix(bumpiness, uInteriorSubstance.b, isf);

    #ifdef dTransparentBackfaces_opaque
        material.a = 1.0;
    #endif
}
`;