//This file is automatically rebuilt by the Cesium build process.
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export default "/**\n\
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* Unpack an IEEE 754 single-precision float that is packed as a little-endian unsigned normalized vec4.\n\
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*\n\
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* @name czm_unpackFloat\n\
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* @glslFunction\n\
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*\n\
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* @param {vec4} packedFloat The packed float.\n\
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*\n\
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* @returns {float} The floating-point depth in arbitrary range.\n\
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*/\n\
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float czm_unpackFloat(vec4 packedFloat)\n\
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{\n\
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// Convert to [0.0, 255.0] and round to integer\n\
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packedFloat = floor(packedFloat * 255.0 + 0.5);\n\
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float sign = 1.0 - step(128.0, packedFloat[3]) * 2.0;\n\
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float exponent = 2.0 * mod(packedFloat[3], 128.0) + step(128.0, packedFloat[2]) - 127.0; \n\
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if (exponent == -127.0)\n\
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{\n\
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return 0.0;\n\
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}\n\
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float mantissa = mod(packedFloat[2], 128.0) * 65536.0 + packedFloat[1] * 256.0 + packedFloat[0] + float(0x800000);\n\
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float result = sign * exp2(exponent - 23.0) * mantissa;\n\
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return result;\n\
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}\n\
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";
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