//This file is automatically rebuilt by the Cesium build process.
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export default "/**\n\
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* Adjusts the saturation of a color.\n\
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* \n\
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* @name czm_saturation\n\
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* @glslFunction\n\
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* \n\
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* @param {vec3} rgb The color.\n\
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* @param {float} adjustment The amount to adjust the saturation of the color.\n\
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*\n\
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* @returns {float} The color with the saturation adjusted.\n\
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*\n\
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* @example\n\
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* vec3 greyScale = czm_saturation(color, 0.0);\n\
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* vec3 doubleSaturation = czm_saturation(color, 2.0);\n\
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*/\n\
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vec3 czm_saturation(vec3 rgb, float adjustment)\n\
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{\n\
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// Algorithm from Chapter 16 of OpenGL Shading Language\n\
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const vec3 W = vec3(0.2125, 0.7154, 0.0721);\n\
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vec3 intensity = vec3(dot(rgb, W));\n\
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return mix(intensity, rgb, adjustment);\n\
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}\n\
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";
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