CesiumGS
diff --git a/‎Apps/Sandcastle/gallery/CZML Polygon.html
+28-4 b/‎Apps/Sandcastle/gallery/CZML Polygon.html
+28-4
diff --git a/‎CHANGES.md
+1 b/‎CHANGES.md
+1
diff --git a/‎Source/DataSources/CzmlDataSource.js
+10 b/‎Source/DataSources/CzmlDataSource.js
+10
@@ -10,10 +10,12 @@
     <script type="text/javascript" src="../Sandcastle-header.js"></script>
     <script type="text/javascript" src="../../../ThirdParty/requirejs-2.1.20/require.js"></script>
     <script type="text/javascript">
-    require.config({
-        baseUrl : '../../../Source',
-        waitSeconds : 60
-    });
+        if(typeof require === 'function') {
+            require.config({
+                baseUrl : '../../../Source',
+                waitSeconds : 120
+            });
+        }
     </script>
 </head>
 <body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
@@ -53,6 +55,28 @@
             }
         }
     }
+}, {
+    "id" : "checkerboardPolygon",
+    "name" : "Checkerboard polygon on surface",
+    "polygon" : {
+        "positions" : {
+            "cartographicDegrees" : [
+                -94.0, 37.0, 0,
+                -95.0, 32.0, 0,
+                -87.0, 33.0, 0
+            ]
+        },
+        "material" : {
+            "checkerboard" : {
+                "evenColor" : {
+                    "rgba" : [255, 0, 0, 255]
+                },
+                "oddColor" : {
+                    "rgba" : [0, 128, 128, 255]
+                }
+            }
+        }
+    }
 }, {
     "id" : "greenPolygon",
     "name" : "Green extruded polygon",
 
@@ -5,6 +5,7 @@ Change Log
 ##### Additions :tada:
 * Added support for new `BingMapsStyle` values `ROAD_ON_DEMAND` and `AERIAL_WITH_LABELS_ON_DEMAND`. The older versions of these, `ROAD` and `AERIAL_WITH_LABELS`, have been deprecated by Bing. [#7808](https://github.com/AnalyticalGraphicsInc/cesium/pull/7808)
 * Added syntax to delete data from existing properties via CZML. [#7818](https://github.com/AnalyticalGraphicsInc/cesium/pull/7818)
+* Added `checkerboard` material to CZML. [#7845](https://github.com/AnalyticalGraphicsInc/cesium/pull/7845)
 * `BingMapsImageryProvider` now uses `DiscardEmptyTileImagePolicy` by default to detect missing tiles as zero-length responses instead of inspecting pixel values. [#7810](https://github.com/AnalyticalGraphicsInc/cesium/pull/7810)
 
 ##### Fixes :wrench:
 
@@ -45,6 +45,7 @@ define([
         './BillboardGraphics',
         './BoxGraphics',
         './CallbackProperty',
+        './CheckerboardMaterialProperty',
         './ColorMaterialProperty',
         './CompositeMaterialProperty',
         './CompositePositionProperty',
@@ -134,6 +135,7 @@ define([
         BillboardGraphics,
         BoxGraphics,
         CallbackProperty,
+        CheckerboardMaterialProperty,
         ColorMaterialProperty,
         CompositeMaterialProperty,
         CompositePositionProperty,
@@ -1168,6 +1170,14 @@ define([
             processPacketData(Color, existingMaterial, 'gapColor', materialData.gapColor, undefined, undefined, entityCollection);
             processPacketData(Number, existingMaterial, 'dashLength', materialData.dashLength, undefined, sourceUri, entityCollection);
             processPacketData(Number, existingMaterial, 'dashPattern', materialData.dashPattern, undefined, sourceUri, entityCollection);
+        } else if (defined(packetData.checkerboard)) {
+            if (!(existingMaterial instanceof CheckerboardMaterialProperty)) {
+                existingMaterial = new CheckerboardMaterialProperty();
+            }
+            materialData = packetData.checkerboard;
+            processPacketData(Color, existingMaterial, 'evenColor', materialData.evenColor, undefined, sourceUri, entityCollection);
+            processPacketData(Color, existingMaterial, 'oddColor', materialData.oddColor, undefined, sourceUri, entityCollection);
+            processPacketData(Cartesian2, existingMaterial, 'repeat', materialData.repeat, undefined, sourceUri, entityCollection);
         }
 
         if (defined(existingInterval)) {