Added VR libraries

Assets/GoogleVR/Demos/Shaders/HelloVR.meta

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Assets/GoogleVR/Demos/Shaders/HelloVR/HelloVRUnlitGrayscaleToColor.shader

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+// Copyright 2016 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+Shader "GoogleVR/Demos/Unlit/HelloVR Color From Grayscale"
+{
+  Properties
+  {
+    _MainTex ("Texture (A)", 2D) = "" {}
+    _Color ("Color Overlay", Color) = (1,1,1,1)
+    _HighlightColor ("Highlight Tint", Color) = (0.63,0.52,0.38,0.66)
+    _ShadowColor ("Shadow Tint", Color) = (0.96,1,1,0.85)
+  }
+
+  SubShader
+  {
+    Tags { "Queue"="Geometry" "RenderType"="Geometry"}
+
+    Pass
+    {
+      CGPROGRAM
+      #pragma vertex vert
+      #pragma fragment frag
+      #pragma target 2.0
+
+      #include "UnityCG.cginc"
+
+      struct appdata {
+        float4 vertex : POSITION;
+        float2 uv : TEXCOORD0;
+      };
+
+      struct v2f {
+        float2 uv : TEXCOORD0;
+        float4 vertex : SV_POSITION;
+      };
+
+      sampler2D _MainTex;
+      float4 _MainTex_ST;
+
+      v2f vert (appdata v) {
+        v2f o;
+        o.vertex = UnityObjectToClipPos(v.vertex);
+        o.uv = TRANSFORM_TEX(v.uv, _MainTex);
+        return o;
+      }
+
+      fixed4 _HighlightColor;
+      fixed4 _ShadowColor;
+      fixed4 _Color;
+
+      fixed4 frag (v2f i) : SV_TARGET {
+        fixed alpha =  tex2D(_MainTex, i.uv).a;
+        fixed3 highlight = max(0,(alpha*alpha)*_HighlightColor.rgb - (1 - _HighlightColor.a));
+        fixed3 shadow = max(0,(alpha*_ShadowColor.rgb - Luminance(highlight)*_ShadowColor.a));
+        fixed4 col = fixed4(highlight + shadow,0)*_Color;
+        return col;
+      }
+      ENDCG
+    }
+  }
+}

Assets/GoogleVR/Demos/Shaders/HelloVR/HelloVRUnlitGrayscaleToColor.shader.meta

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