//This file is automatically rebuilt by the Cesium build process. export default "#define SHIFT_RIGHT_8 0.00390625 //1.0 / 256.0\n\ #define SHIFT_RIGHT_16 0.00001525878 //1.0 / 65536.0\n\ #define SHIFT_RIGHT_24 5.960464477539063e-8//1.0 / 16777216.0\n\ \n\ #define BIAS 38.0\n\ \n\ /**\n\ * Unpacks a vec4 value containing values expressable as uint8 to an arbitrary float.\n\ *\n\ * @name czm_unpackFloat\n\ * @glslFunction\n\ *\n\ * @param {vec4} packedFloat The packed float.\n\ *\n\ * @returns {float} The floating-point depth in arbitrary range.\n\ */\n\ float czm_unpackFloat(vec4 packedFloat)\n\ {\n\ packedFloat *= 255.0;\n\ float temp = packedFloat.w / 2.0;\n\ float exponent = floor(temp);\n\ float sign = (temp - exponent) * 2.0;\n\ exponent = exponent - float(BIAS);\n\ sign = sign * 2.0 - 1.0;\n\ sign = -sign;\n\ float unpacked = sign * packedFloat.x * float(SHIFT_RIGHT_8);\n\ unpacked += sign * packedFloat.y * float(SHIFT_RIGHT_16);\n\ unpacked += sign * packedFloat.z * float(SHIFT_RIGHT_24);\n\ return unpacked * pow(10.0, exponent);\n\ }\n\ ";