diff --git a/Assets/raymarched/lib/libgarbage.cginc b/Assets/raymarched/lib/libgarbage.cginc
index dff2c74..23b114e 100644
--- a/Assets/raymarched/lib/libgarbage.cginc
+++ b/Assets/raymarched/lib/libgarbage.cginc
@@ -82,12 +82,14 @@ START_RAYS_IN_SPHERE // TODO: implement
 
 struct AppData {
 	float4 vertex : POSITION;
+	UNITY_VERTEX_INPUT_INSTANCE_ID
 };
 
 struct V2F {
 	float4 vertex : SV_POSITION;
 	float3 cam_pos : TEXCOORD0;
 	float3 hit_pos : TEXCOORD1;
+	UNITY_VERTEX_OUTPUT_STEREO
 };
 
 struct FragOut {
@@ -139,6 +141,9 @@ Ray cast_ray(float3 p, float3 d, float startDist = 0);
 
 V2F vert (AppData v) {
 	V2F o;
+	UNITY_SETUP_INSTANCE_ID(v);
+	UNITY_INITIALIZE_OUTPUT(V2F, o);
+	UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
 	o.vertex = UnityObjectToClipPos(v.vertex);
 	#ifdef USE_WORLD_SPACE
 	o.cam_pos = _WorldSpaceCameraPos;