Fix OIT texture not getting updated
Fix OIT texture not getting updated

CesiumGS/cesium,likangning93/cesium,likangning93/cesium,CesiumGS/cesium,CesiumGS/cesium,CesiumGS/cesium,CesiumGS/cesium,likangning93/cesium,AnalyticalGraphicsInc/cesium,progsung/cesium,YonatanKra/cesium,likangning93/cesium,AnalyticalGraphicsInc/cesium,YonatanKra/cesium,YonatanKra/cesium,progsung/cesium,likangning93/cesium,YonatanKra/cesium