Fix for first frame after depthTestAgainstTerrain is disabled
Fix for first frame after depthTestAgainstTerrain is disabled

geoscan/cesium,progsung/cesium,likangning93/cesium,likangning93/cesium,progsung/cesium,YonatanKra/cesium,kaktus40/cesium,AnalyticalGraphicsInc/cesium,AnalyticalGraphicsInc/cesium,hodbauer/cesium,CesiumGS/cesium,YonatanKra/cesium,likangning93/cesium,hodbauer/cesium,CesiumGS/cesium,CesiumGS/cesium,josh-bernstein/cesium,jasonbeverage/cesium,likangning93/cesium,josh-bernstein/cesium,hodbauer/cesium,YonatanKra/cesium,jasonbeverage/cesium,CesiumGS/cesium,YonatanKra/cesium,geoscan/cesium,likangning93/cesium,kaktus40/cesium,CesiumGS/cesium