text: //This file is automatically rebuilt by the Cesium build process.
  export default "float czm_nearFarScalar(vec4 nearFarScalar, float cameraDistSq)\n\
  {\n\
  float valueAtMin = nearFarScalar.y;\n\
  float valueAtMax = nearFarScalar.w;\n\
  float nearDistanceSq = nearFarScalar.x * nearFarScalar.x;\n\
  float farDistanceSq = nearFarScalar.z * nearFarScalar.z;\n\
  float t = (cameraDistSq - nearDistanceSq) / (farDistanceSq - nearDistanceSq);\n\
  t = pow(clamp(t, 0.0, 1.0), 0.2);\n\
  return mix(valueAtMin, valueAtMax, t);\n\
  }\n\
  ";
  