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| //This file is automatically rebuilt by the Cesium build process.
| export default "/**\n\
| * @private\n\
| */\n\
| float czm_alphaWeight(float a)\n\
| {\n\
| float z = (gl_FragCoord.z - czm_viewportTransformation[3][2]) / czm_viewportTransformation[2][2];\n\
| \n\
| // See Weighted Blended Order-Independent Transparency for examples of different weighting functions:\n\
| // http://jcgt.org/published/0002/02/09/\n\
| 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\
| }\n\
| ";
|
|
