Added terrain and basic terrain textures

Assets/Filamented/FilamentCommonShading.cginc

@@ -0,0 +1,57 @@
+#ifndef FILAMENT_COMMON_SHADING
+#define FILAMENT_COMMON_SHADING
+/*
+// These variables should be in a struct but some GPU drivers ignore the
+// precision qualifier on individual struct members
+highp float3x3  shading_tangentToWorld;   // TBN matrix
+highp float3  shading_position;           // position of the fragment in world space
+      float3  shading_view;               // normalized vector from the fragment to the eye
+      float3  shading_normal;             // normalized transformed normal, in world space
+      float3  shading_geometricNormal;    // normalized geometric normal, in world space
+      float3  shading_reflected;          // reflection of view about normal
+      float shading_NoV;                  // dot(normal, view), always strictly >= MIN_N_DOT_V
+
+#if defined(MATERIAL_HAS_BENT_NORMAL)
+      float3  shading_bentNormal;       // normalized transformed normal, in world space
+#endif
+
+#if defined(MATERIAL_HAS_CLEAR_COAT)
+      float3  shading_clearCoatNormal;  // normalized clear coat layer normal, in world space
+#endif
+
+highp float2 shading_normalizedViewportCoord;
+*/
+
+// Worry about that problem later.
+struct ShadingParams {
+      float3x3  tangentToWorld;   // TBN matrix
+      float3  position;           // position of the fragment in world space
+      half3  view;                // normalized vector from the fragment to the eye
+      half3  normal;              // normalized transformed normal, in world space
+      half3  geometricNormal;     // normalized geometric normal, in world space
+      half3  reflected;           // reflection of view about normal
+      half NoV;                   // dot(normal, view), always strictly >= MIN_N_DOT_V
+
+#if defined(MATERIAL_HAS_BENT_NORMAL)
+      half3  bentNormal;          // normalized transformed normal, in world space
+#endif
+
+#if defined(MATERIAL_HAS_CLEAR_COAT)
+      half3  clearCoatNormal;     // normalized clear coat layer normal, in world space
+#endif
+
+      half2 normalizedViewportCoord;
+
+      // These parameters are provided to inject Unity lighting into Filament data.
+      half attenuation;
+      half3 ambient;
+      half4 lightmapUV;
+
+#if defined(USING_BAKERY_VERTEXLMSH)
+      half3 ambientSH[3];
+#elif defined(USING_BAKERY_VERTEXLMDIR)
+      half3 ambientDir;
+#endif
+
+};
+#endif // FILAMENT_COMMON_SHADING