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

//This file is automatically rebuilt by the Cesium build process.
export default "float czm_unpackDepth(vec4 packedDepth)\n\
{\n\
return dot(packedDepth, vec4(1.0, 1.0 / 255.0, 1.0 / 65025.0, 1.0 / 16581375.0));\n\
}\n\
";