cesium.pass.transparent fragcolor - SERP Analysis

https://community.cesium.com/t/setting-the-alpha-value-of-a-custom-primitive/8594

https://community.cesium.com/t/how-can-i-pass-material-uniform-color-to-custom-fragment-shader-in-materialappearance/15862

https://groups.google.com/g/cesium-dev/c/ApjKyLX3QYU/m/60f0duZ5BgAJ

https://github.com/AnalyticalGraphicsInc/cesium/issues/3459

https://groups.google.com/g/cesium-dev/c/dh3O12530hA

https://github.com/AnalyticalGraphicsInc/cesium/issues/2484

https://stackoverflow.com/questions/77682603/is-the-shader-specified-by-the-source-attribute-in-cesium-fabric-the-equivalent

https://stackoverflow.com/questions/22313789/cesium-js-how-to-fade-a-polyline-to-transparent

https://discourse.threejs.org/t/gl-fragcolor-with-transparency-for-one-object-does-not-show-object-behind/13017

https://axibase.com/use-cases/workshop/webgl.html

http://floored.github.io/blog/2014/webgl-order-independent-transparency-single-render-target

https://www.cnblogs.com/onsummer/p/drawcommand-in-cesium.html

https://segmentfault.com/a/1190000041773828/en

https://www.cnblogs.com/mazhenyu/p/11482237.html

https://blog.csdn.net/qq_35984445/article/details/124814130

http://man.hubwiz.com/docset/Cesium.docset/Contents/Resources/Documents/Scene_Scene.js.html

http://man.hubwiz.com/docset/Cesium.docset/Contents/Resources/Documents/Scene_ShadowMap.js.html