stereo rendering shader

Shaders/RasterWithTransparencyShader.shader

@@ -48,6 +48,8 @@ Shader "Mapbox/Raster With Transparency"
 					float4 vertex			: POSITION;
 					float4 texcoord			: TEXCOORD0;
 					fixed4 color			: COLOR;
+
+					UNITY_VERTEX_INPUT_INSTANCE_ID
 				};
 			
 				struct vertexOut 
@@ -56,11 +58,19 @@ Shader "Mapbox/Raster With Transparency"
 					float2 uv				: UV_COORD0;
 					float4 color			: COLOR;
 					float2 screenspaceUv	: UV_COORD1;
+
+					UNITY_VERTEX_INPUT_INSTANCE_ID 
+					UNITY_VERTEX_OUTPUT_STEREO
 				};
 
 				vertexOut vert(vertexIn v)
 				{
 					vertexOut o;
+
+					UNITY_SETUP_INSTANCE_ID(v); //Insert
+					UNITY_INITIALIZE_OUTPUT(vertexOut, o); //Insert
+					UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o); //Insert
+
 					o.pos = UnityObjectToClipPos (v.vertex);
 					o.color = v.color;
 					o.uv = v.texcoord.xy;
@@ -70,6 +80,9 @@ Shader "Mapbox/Raster With Transparency"
 
 				fixed4 frag(vertexOut o) : SV_Target
 				{
+
+					UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(o);
+
 					float2 uv = TRANSFORM_TEX(o.uv, _MainTex);
 					fixed4 texColor = tex2D(_MainTex, uv);