forked from Rowland/EG
21 lines
704 B
JavaScript
21 lines
704 B
JavaScript
//This file is automatically rebuilt by the Cesium build process.
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export default "/**\n\
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* Packs a depth value into a vec4 that can be represented by unsigned bytes.\n\
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*\n\
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* @name czm_packDepth\n\
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* @glslFunction\n\
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*\n\
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* @param {float} depth The floating-point depth.\n\
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* @returns {vec4} The packed depth.\n\
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*/\n\
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vec4 czm_packDepth(float depth)\n\
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{\n\
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// See Aras Pranckevičius' post Encoding Floats to RGBA\n\
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// http://aras-p.info/blog/2009/07/30/encoding-floats-to-rgba-the-final/\n\
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vec4 enc = vec4(1.0, 255.0, 65025.0, 16581375.0) * depth;\n\
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enc = fract(enc);\n\
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enc -= enc.yzww * vec4(1.0 / 255.0, 1.0 / 255.0, 1.0 / 255.0, 0.0);\n\
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return enc;\n\
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}\n\
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";
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