From d5c68f756db379687e034f562c4b292bf42130bf Mon Sep 17 00:00:00 2001
From: Paul Du Bois <pld@google.com>
Date: Mon, 10 Feb 2020 17:18:11 -0800
Subject: [PATCH] glTF spec/gloss materials support textures

Cherry-picked from TB

Change-Id: Id000b015ab401d4269fee455d8dddb37cd0c52ae
---
 UnitySDK/Assets/TiltBrush/Scripts/Gltf/Gltf2Schema.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/UnitySDK/Assets/TiltBrush/Scripts/Gltf/Gltf2Schema.cs b/UnitySDK/Assets/TiltBrush/Scripts/Gltf/Gltf2Schema.cs
index 899337b6..0d1e9dea 100644
--- a/UnitySDK/Assets/TiltBrush/Scripts/Gltf/Gltf2Schema.cs
+++ b/UnitySDK/Assets/TiltBrush/Scripts/Gltf/Gltf2Schema.cs
@@ -234,6 +234,9 @@ private IEnumerable<TextureInfo> TextureInfos {
       if (pbrMetallicRoughness != null) {
         yield return pbrMetallicRoughness.baseColorTexture;
         yield return pbrMetallicRoughness.metallicRoughnessTexture;
+      } else if (extensions?.KHR_materials_pbrSpecularGlossiness != null) {
+        var specGloss = extensions.KHR_materials_pbrSpecularGlossiness;
+        yield return specGloss.diffuseTexture;
       }
     }
   }