Added terrain and basic terrain textures

Assets/Filamented/UnityLightingCommon.cginc

@@ -0,0 +1,53 @@
+// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
+
+#ifndef UNITY_LIGHTING_COMMON_INCLUDED
+#define UNITY_LIGHTING_COMMON_INCLUDED
+
+fixed4 _LightColor0;
+fixed4 _SpecColor;
+
+struct UnityLight
+{
+    half3 color;
+    half3 dir;
+    half  ndotl; // Deprecated: Ndotl is now calculated on the fly and is no longer stored. Do not used it.
+};
+
+struct UnityIndirect
+{
+    half3 diffuse;
+    half3 specular;
+};
+
+struct UnityGI
+{
+    UnityLight light;
+    UnityIndirect indirect;
+};
+
+struct UnityGIInput
+{
+    UnityLight light; // pixel light, sent from the engine
+
+    float3 worldPos;
+    half3 worldViewDir;
+    half atten;
+    half3 ambient;
+
+    // interpolated lightmap UVs are passed as full float precision data to fragment shaders
+    // so lightmapUV (which is used as a tmp inside of lightmap fragment shaders) should
+    // also be full float precision to avoid data loss before sampling a texture.
+    float4 lightmapUV; // .xy = static lightmap UV, .zw = dynamic lightmap UV
+
+    #if defined(UNITY_SPECCUBE_BLENDING) || defined(UNITY_SPECCUBE_BOX_PROJECTION) || defined(UNITY_ENABLE_REFLECTION_BUFFERS)
+    float4 boxMin[2];
+    #endif
+    #ifdef UNITY_SPECCUBE_BOX_PROJECTION
+    float4 boxMax[2];
+    float4 probePosition[2];
+    #endif
+    // HDR cubemap properties, use to decompress HDR texture
+    float4 probeHDR[2];
+};
+
+#endif