yes

modules/wallpaper-engine/effects/refraction/preview/materials/effectpreview.json

@@ -0,0 +1,13 @@
+{
+	"passes" : 
+	[
+		{
+			"blending" : "translucent",
+			"cullmode" : "nocull",
+			"depthtest" : "disabled",
+			"depthwrite" : "disabled",
+			"shader" : "genericimage2",
+			"textures" : [ "effectpreview" ]
+		}
+	]
+}

modules/wallpaper-engine/effects/refraction/preview/materials/effects/refract.json

@@ -0,0 +1,10 @@
+{
+	"passes": [{
+		"shader": "effects/refract",
+		"blending": "normal",
+		"depthtest": "disabled",
+		"depthwrite": "disabled",
+		"cullmode": "nocull",
+		"textures": [null, null, "effects/refractnormal"]
+	}]
+}