Initial Commit

Assets/Oculus/Interaction/Runtime/Shaders/DotGridUnlit.shader

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+/************************************************************************************
+Copyright : Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
+
+Your use of this SDK or tool is subject to the Oculus SDK License Agreement, available at
+https://developer.oculus.com/licenses/oculussdk/
+
+Unless required by applicable law or agreed to in writing, the Utilities SDK 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 "Interaction/DotGridUnlit"
+{
+    Properties {
+        _Color("Color", Color) = (0, 0, 0, 1)
+
+        // rows, columns, radius
+        _Dimensions("Dimensions", Vector) = (1, 1, .1, 0)
+    }
+
+    SubShader
+    {
+        Tags {"Queue"="Transparent" "RenderType"="Transparent"}
+        ZWrite Off
+        Blend SrcAlpha OneMinusSrcAlpha
+        LOD 100
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma multi_compile_instancing
+
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+                float4 vertex : SV_POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            UNITY_INSTANCING_BUFFER_START(Props)
+                UNITY_DEFINE_INSTANCED_PROP(fixed4, _Color)
+                UNITY_DEFINE_INSTANCED_PROP(fixed4, _Dimensions)
+            UNITY_INSTANCING_BUFFER_END(Props)
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_TRANSFER_INSTANCE_ID(v, o);
+
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.uv = v.uv;
+
+                return o;
+            }
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+                UNITY_SETUP_INSTANCE_ID(i);
+
+                float4 color = UNITY_ACCESS_INSTANCED_PROP(Props, _Color);
+                float4 dimensions = UNITY_ACCESS_INSTANCED_PROP(Props, _Dimensions);
+
+                float2 diameter = float2(1.0f/dimensions.x, 1.0f/dimensions.y);
+                float2 uvOffset = i.uv + diameter / 2.0f;
+                float2 index = floor(uvOffset / diameter);
+                float2 xy = index * diameter;
+                float dist = distance(i.uv, xy);
+
+                clip(dimensions.z - dist);
+
+                return color;
+            }
+            ENDCG
+        }
+    }
+}