16 lines
566 B
JavaScript
16 lines
566 B
JavaScript
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//This file is automatically rebuilt by the Cesium build process.
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define(function() {
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'use strict';
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return "/**\n\
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* @private\n\
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*/\n\
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float czm_alphaWeight(float a)\n\
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{\n\
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float z = (gl_FragCoord.z - czm_viewportTransformation[3][2]) / czm_viewportTransformation[2][2];\n\
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\n\
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// See Weighted Blended Order-Independent Transparency for examples of different weighting functions:\n\
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// http://jcgt.org/published/0002/02/09/\n\
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return pow(a + 0.01, 4.0) + max(1e-2, min(3.0 * 1e3, 0.003 / (1e-5 + pow(abs(z) / 200.0, 4.0))));\n\
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}\n\
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";
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});
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