From 3c1e654e7a43c7ae7753b0b34a64e9f5eabc33ad Mon Sep 17 00:00:00 2001
From: Dan Bagnell <daniel.p.bagnell@gmail.com>
Date: Wed, 2 Jan 2019 14:09:14 -0500
Subject: [PATCH 1/2] Fix OIT when toggling HDR.

---
 Source/Scene/OIT.js   | 8 ++++++--
 Source/Scene/Scene.js | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Source/Scene/OIT.js b/Source/Scene/OIT.js
index 025c8b042607..f029e13a8ad4 100644
--- a/Source/Scene/OIT.js
+++ b/Source/Scene/OIT.js
@@ -89,6 +89,8 @@ define([
 
         this._useScissorTest = false;
         this._scissorRectangle = undefined;
+
+        this._useHDR = false;
     }
 
     function destroyTextures(oit) {
@@ -200,7 +202,7 @@ define([
         return supported;
     }
 
-    OIT.prototype.update = function(context, passState, framebuffer) {
+    OIT.prototype.update = function(context, passState, framebuffer, useHDR) {
         if (!this.isSupported()) {
             return;
         }
@@ -213,7 +215,7 @@ define([
         var height = this._opaqueTexture.height;
 
         var accumulationTexture = this._accumulationTexture;
-        var textureChanged = !defined(accumulationTexture) || accumulationTexture.width !== width || accumulationTexture.height !== height;
+        var textureChanged = !defined(accumulationTexture) || accumulationTexture.width !== width || accumulationTexture.height !== height || useHDR !== this._useHDR;
         if (textureChanged) {
             updateTextures(this, context, width, height);
         }
@@ -225,6 +227,8 @@ define([
             }
         }
 
+        this._useHDR = useHDR;
+
         var that = this;
         var fs;
         var uniformMap;
diff --git a/Source/Scene/Scene.js b/Source/Scene/Scene.js
index a5c09a86c60a..e3256d11da40 100644
--- a/Source/Scene/Scene.js
+++ b/Source/Scene/Scene.js
@@ -2987,7 +2987,7 @@ define([
         var oit = view.oit;
         var useOIT = environmentState.useOIT = !picking && defined(oit) && oit.isSupported();
         if (useOIT) {
-            oit.update(context, passState, view.globeDepth.framebuffer);
+            oit.update(context, passState, view.globeDepth.framebuffer, scene._hdr);
             oit.clear(context, passState, clearColor);
             environmentState.useOIT = oit.isSupported();
         }

From 92841297bc958b04810ec998845a78a1db09b807 Mon Sep 17 00:00:00 2001
From: Dan Bagnell <daniel.p.bagnell@gmail.com>
Date: Wed, 2 Jan 2019 14:12:44 -0500
Subject: [PATCH 2/2] Update CHANGES.md.

---
 CHANGES.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGES.md b/CHANGES.md
index 29432abab124..2fe3a7d31be8 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -14,6 +14,7 @@ Change Log
 * Fixed 3D Tiles visibility checking when running multiple passes within the same frame. [#7289](https://github.com/AnalyticalGraphicsInc/cesium/pull/7289)
 * Fixed contrast on imagery layers. [#7382](https://github.com/AnalyticalGraphicsInc/cesium/issues/7382)
 * Fixed rendering transparent background color when `highDynamicRange` is enabled. [#7427](https://github.com/AnalyticalGraphicsInc/cesium/issues/7427)
+* Fixed translucent geometry when `highDynamicRange` is toggled. [#7451](https://github.com/AnalyticalGraphicsInc/cesium/pull/7451)
 
 ### 1.52 - 2018-12-03