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jme3-terrain/src/main/resources/Common/MatDefs/Terrain/Modular/PBRTerrainTextureLayer.glsl

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+#ifndef __TERRAIN_LAYER_MODULE__
+    #define __TERRAIN_LAYER_MODULE__
+
+    #ifndef PBRTerrainTextureLayer
+        #struct StdPBRTerrainTextureLayer
+
+            float blendValue;
+
+            vec4 albedo;
+            float alpha;
+            vec3 normal;
+            float height;  //parallax unused currently
+            float metallic;             
+            float roughness;
+            float ao;
+            vec4 emission;
+
+        #endstruct
+        #define PBRTerrainTextureLayer StdPBRTerrainTextureLayer    
+    #endif
+#endif