update materials

valve/pbr/maps/c1a3.bsp/c1a3.bsp.mat

@@ -0,0 +1,10 @@
+{
+"for" "generic028"
+"metalness" "1"
+"roughness" "0.1"
+}
+{
+"for" "silo2_cor2"
+"metalness" "1"
+"roughness" "0.7"
+}

valve/pbr/maps/c1a3c.bsp/c1a3c.bsp.mat

@@ -0,0 +1,20 @@
+{
+"for" "generic028"
+"metalness" "1"
+"roughness" "0.1"
+}
+{
+"for" "-0silo2_cor2"
+"metalness" "1"
+"roughness" "0.4"
+}
+{
+"for" "-1silo2_cor2"
+"metalness" "1"
+"roughness" "0.4"
+}
+{
+"for" "-2silo2_cor2"
+"metalness" "1"
+"roughness" "0.4"
+}