Update Tests

tests/validation/config.json

@@ -797,7 +797,8 @@
         {
             "title": "Texture cache",
             "playgroundId": "#3TFH5I#0",
-            "referenceImage": "texture cache.png"
+            "referenceImage": "texture cache.png",
+            "excludedEngines": ["webgl1"]
         },
         {
             "title": "MultiSample render targets",