add blank material files

valve/pbr/halflife.wad/-GLASSBRICK/-GLASSBRICK.mat

@@ -0,0 +1,40 @@
+
+{
+"for" "-0GLASSBRICK"
+//"basecolor_map" "-0GLASSBRICK.png"
+//"normal_map" "-0GLASSBRICK_normal.png"
+//"metal_map" "-0GLASSBRICK_metal.png"
+//"roughness_map" "-0GLASSBRICK_roughness.png"
+}
+
+{
+"for" "-1GLASSBRICK"
+//"basecolor_map" "-1GLASSBRICK.png"
+//"normal_map" "-1GLASSBRICK_normal.png"
+//"metal_map" "-1GLASSBRICK_metal.png"
+//"roughness_map" "-1GLASSBRICK_roughness.png"
+}
+
+{
+"for" "-2GLASSBRICK"
+//"basecolor_map" "-2GLASSBRICK.png"
+//"normal_map" "-2GLASSBRICK_normal.png"
+//"metal_map" "-2GLASSBRICK_metal.png"
+//"roughness_map" "-2GLASSBRICK_roughness.png"
+}
+
+{
+"for" "-3GLASSBRICK"
+//"basecolor_map" "-3GLASSBRICK.png"
+//"normal_map" "-3GLASSBRICK_normal.png"
+//"metal_map" "-3GLASSBRICK_metal.png"
+//"roughness_map" "-3GLASSBRICK_roughness.png"
+}
+
+{
+"for" "-4GLASSBRICK"
+//"basecolor_map" "-4GLASSBRICK.png"
+//"normal_map" "-4GLASSBRICK_normal.png"
+//"metal_map" "-4GLASSBRICK_metal.png"
+//"roughness_map" "-4GLASSBRICK_roughness.png"
+}