add blank material files

cstrike/pbr/itsitaly.wad/-clayRoof/-clayRoof.mat

@@ -0,0 +1,24 @@
+
+{
+"for" "-0clayRoof"
+//"basecolor_map" "-0clayRoof.png"
+//"normal_map" "-0clayRoof_normal.png"
+//"metal_map" "-0clayRoof_metal.png"
+//"roughness_map" "-0clayRoof_roughness.png"
+}
+
+{
+"for" "-1clayRoof"
+//"basecolor_map" "-1clayRoof.png"
+//"normal_map" "-1clayRoof_normal.png"
+//"metal_map" "-1clayRoof_metal.png"
+//"roughness_map" "-1clayRoof_roughness.png"
+}
+
+{
+"for" "-2clayRoof"
+//"basecolor_map" "-2clayRoof.png"
+//"normal_map" "-2clayRoof_normal.png"
+//"metal_map" "-2clayRoof_metal.png"
+//"roughness_map" "-2clayRoof_roughness.png"
+}