Comment and CHANGES.md

Author: lilleyse

CHANGES.md

@@ -4,6 +4,7 @@ Change Log
 ### 1.36 - 2017-08-01
 
 * Added ability to show tile urls in the 3D Tiles Inspector. [#5592](https://github.com/AnalyticalGraphicsInc/cesium/pull/5592)
+* Fixed a bug when reading CRN compressed textures with multiple mip levels. [#5618](https://github.com/AnalyticalGraphicsInc/cesium/pull/5618)
 
 ### 1.35.2 - 2017-07-11
 

Source/Workers/transcodeCRNToDXT.js

@@ -133,6 +133,7 @@ define([
         // When mipmaps are supported, a copy will still be necessary as dxtData is a view on the heap.
         var length = PixelFormat.compressedTextureSizeInBytes(format, width, height);
 
+        // Get a copy of the 0th mip level. dxtData will exceed length when there are more mip levels.
         // Equivalent to dxtData.slice(0, length), which is not supported in IE11
         var level0DXTDataView = dxtData.subarray(0, length);
         var level0DXTData = new Uint8Array(length);