Initial Commit

Assets/Oculus/VR/Resources/Underlay Impostor.shader

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+/*
+This shader is used to render the impostor while clearing out the alpha of the eye buffer
+The important details here are:
+- the use of the Geometry+1 queue to make sure the impostor is drawn after all other opaque objects but before alpha
+- the keepalpha parameter that allow unity to actually write the alpha we return at the end of the shader.
+*/
+
+Shader "Oculus/Underlay Impostor" {
+    Properties{
+        _Color("Color", Color) = (1,1,1,1)
+        _MainTex("Albedo (RGB)", 2D) = "white" {}
+        _Glossiness("Smoothness", Range(0,1)) = 0.5
+        _Metallic("Metallic", Range(0,1)) = 0.0
+    }
+        SubShader{
+            Tags { "Queue" = "Geometry+1" "RenderType" = "Opaque" }
+            LOD 200
+
+            CGPROGRAM
+            // Physically based Standard lighting model, and enable shadows on all light types
+            #pragma surface surf Standard fullforwardshadows keepalpha
+
+            // Use shader model 3.0 target, to get nicer looking lighting
+            #pragma target 3.0
+
+            sampler2D _MainTex;
+
+            struct Input {
+                float2 uv_MainTex;
+            };
+
+            half _Glossiness;
+            half _Metallic;
+            fixed4 _Color;
+
+            void surf(Input IN, inout SurfaceOutputStandard o) {
+                // Albedo comes from a texture tinted by color
+                fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
+                o.Albedo = c.rgb;
+                // Metallic and smoothness come from slider variables
+                o.Metallic = _Metallic;
+                o.Smoothness = _Glossiness;
+                o.Alpha = 0.f;
+            }
+            ENDCG
+        }
+            FallBack "Diffuse"
+}