Merge pull request #8368 from AnalyticalGraphicsInc/revert-separate-primitive-framebuffer

Revert separate primitive framebuffer

Author: mramato

CHANGES.md

@@ -5,6 +5,7 @@ Change Log
 
 ##### Fixes :wrench:
 * Fixed regression in 1.63 where ground atmosphere and labels rendered incorrectly on displays with `window.devicePixelRatio` greater than 1.0. [#8351](https://github.com/AnalyticalGraphicsInc/cesium/pull/8351)
+* Fixed regression in 1.63 where some primitives would show through the globe when log depth is disabled. [#8368](https://github.com/AnalyticalGraphicsInc/cesium/pull/8368)
 
 ### 1.63 - 2019-11-01
 

Source/Scene/Scene.js

@@ -2198,7 +2198,7 @@ import View from './View.js';
 
         var clearGlobeDepth = environmentState.clearGlobeDepth;
         var useDepthPlane = environmentState.useDepthPlane;
-        var separatePrimitiveFramebuffer = environmentState.separatePrimitiveFramebuffer = (numFrustums > 1) && clearGlobeDepth && environmentState.useGlobeDepthFramebuffer;
+        var separatePrimitiveFramebuffer = environmentState.separatePrimitiveFramebuffer = false;
         var clearDepth = scene._depthClearCommand;
         var clearStencil = scene._stencilClearCommand;
         var clearClassificationStencil = scene._classificationStencilClearCommand;