cesiumDemo/Source/Shaders/Builtin/Functions/getLambertDiffuse.js

//This file is automatically rebuilt by the Cesium build process.
export default "float czm_getLambertDiffuse(vec3 lightDirectionEC, vec3 normalEC)\n\
{\n\
return max(dot(lightDirectionEC, normalEC), 0.0);\n\
}\n\
";