Quick compilation error fix.

README.md

@@ -1,9 +1,9 @@
-glTF 2.0 Sample Viewer
-======================
+Khronos glTF 2.0 Sample Viewer
+==============================
 
 [![](assets/images/BoomBox.jpg)](http://gltf.ux3d.io/)
 
-This is the official [Khronos](https://www.khronos.org/) [glTF 2.0](https://www.khronos.org/gltf/) sample viewer using [WebGL](https://www.khronos.org/webgl/): [glTF 2.0 Sample Viewer](http://gltf.ux3d.io/)
+This is the official [Khronos](https://www.khronos.org/) [glTF 2.0](https://www.khronos.org/gltf/) Sample Viewer using [WebGL](https://www.khronos.org/webgl/): [glTF 2.0 Sample Viewer](http://gltf.ux3d.io/)
 
 
 **Table of Contents**
@@ -24,26 +24,29 @@ This is the official [Khronos](https://www.khronos.org/) [glTF 2.0](https://www.
 Version
 -------
 
-Pre-release
+Development for PBR next phase one
 
 Credits
 -------
 
-Developed by [UX3D](https://www.ux3d.io/) and based on the former [glTF-WebGL-PBR](https://github.com/KhronosGroup/glTF-Sample-Viewer/tree/glTF-WebGL-PBR) project. Supported by the [Khronos Group](https://www.khronos.org/) and [Facebook](https://www.facebook.com/) for animations, skinning and morphing.
+Refactored and developed by [UX3D](https://www.ux3d.io/). Supported by the [Khronos Group](https://www.khronos.org/) and by [Google](https://www.google.com/) for the glTF Draco mesh compression import.  
+Original code based on the former [glTF-WebGL-PBR](https://github.com/KhronosGroup/glTF-Sample-Viewer/tree/glTF-WebGL-PBR) project. Previously supported by [Facebook](https://www.facebook.com/) for animations, skinning and morphing.
 
 Features
 ========
 
 - [x] glTF 2.0
+- [ ] [KHR_draco_mesh_compression](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression)
 - [x] [KHR_lights_punctual](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual)
-- [x] [KHR_materials_pbrSpecularGlossiness](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness)
 - [x] [KHR_materials_clearcoat](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat)
+- [x] [KHR_materials_pbrSpecularGlossiness](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness)
+- [x] [KHR_materials_sheen](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_sheen)
+- [x] [KHR_materials_transmission](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission)
 - [x] [KHR_materials_unlit](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit)
+- [ ] [KHR_materials_variants](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_variants)
+- [ ] [KHR_texture_basisu](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu)
 - [x] [KHR_texture_transform](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform)
-
-Experimental
-- [x] [KHR_materials_ior](https://github.com/KhronosGroup/glTF/pull/1718)
-- [x] [KHR_materials_transmission](https://github.com/KhronosGroup/glTF/pull/1698)
+- [ ] KHR_xmp_ld
 
 Viewer
 ======

src/shaders/pbr.frag

@@ -231,7 +231,7 @@ MaterialInfo getClearCoatInfo(MaterialInfo info, NormalInfo normalInfo, float f0
 {
     info.clearcoatFactor = u_ClearcoatFactor;
     info.clearcoatRoughness = u_ClearcoatRoughnessFactor;
-    info.clearcoatF0 = f0_ior;
+    info.clearcoatF0 = vec3(f0_ior);
     info.clearcoatF90 = vec3(1.0);
 
     #ifdef HAS_CLEARCOAT_TEXTURE_MAP