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Assets/Oculus/Interaction/Samples/Shaders/room.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 "Oculus/Interaction/Room"
+{
+		Properties
+		{
+			_MainTex("MainTex", 2D) = "white" {}
+            _DetailTex("Detail Texture", 2D) = "white" {}
+            _DetailTexIntensity("Detail Texture Intensity", Range(0, 1)) = 1
+
+			_ColorLight("Light Color", Color) = (0,0,0,0)
+			_ColorDark("Dark Color", Color) = (0, 0, 0, 0)
+			_DitherStrength("Dither Strength", int) = 16
+
+			[HideInInspector] _texcoord("", 2D) = "white" {}
+		}
+
+			SubShader
+		{
+			Tags{ "RenderType" = "Opaque"  "Queue" = "Geometry+0" }
+			LOD 100
+
+			CGINCLUDE
+			#pragma target 3.0
+			ENDCG
+			Blend Off
+			AlphaToMask Off
+			Cull Back
+			ColorMask RGBA
+			ZWrite On
+			ZTest LEqual
+			Offset 0 , 0
+
+			Pass
+			{
+				Name "Base"
+				Tags { "LightMode" = "ForwardBase" }
+				CGPROGRAM
+
+				#ifndef UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX
+				//only defining to not throw compilation error over Unity 5.5
+				#define UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input)
+				#endif
+				#pragma vertex vert
+				#pragma fragment frag
+				#pragma multi_compile_instancing
+
+				#include "UnityCG.cginc"
+				#include "UnityShaderVariables.cginc"
+
+				struct vertexInput
+				{
+					float4 vertex : POSITION;
+					half2 texcoord : TEXCOORD0;
+					UNITY_VERTEX_INPUT_INSTANCE_ID
+				};
+
+				struct vertexOutput
+				{
+					float4 vertex : SV_POSITION;
+					half2 texcoord : TEXCOORD1;
+					UNITY_VERTEX_INPUT_INSTANCE_ID
+					UNITY_VERTEX_OUTPUT_STEREO
+				};
+
+
+				uniform sampler2D _MainTex;
+				uniform half4 _MainTex_ST;
+                uniform sampler2D _DetailTex;
+                uniform half _DetailTexIntensity;
+                uniform half4 _DetailTex_ST;
+				uniform half4 _ColorLight;
+                uniform half4 _ColorDark;
+                half _DitherStrength;
+
+
+
+
+				vertexOutput vert(vertexInput v)
+				{
+					vertexOutput o;
+					UNITY_SETUP_INSTANCE_ID(v);
+					UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+					UNITY_TRANSFER_INSTANCE_ID(v, o);
+
+					o.vertex = UnityObjectToClipPos(v.vertex);
+					o.texcoord = v.texcoord;
+					return o;
+				}
+
+				inline half DitherAnimatedNoise(half2 screenPos) {
+					half noise = frac(
+						dot(uint3(screenPos, floor(fmod(_Time.y * 10, 4))), uint3(2, 7, 23) / 17.0f));
+					noise -= 0.5; // remap from [0..1[ to [-0.5..0.5[
+                    half noiseScaled = (noise / _DitherStrength);
+					return noiseScaled;
+                }
+
+				fixed4 frag(vertexOutput i) : SV_Target
+				{
+					UNITY_SETUP_INSTANCE_ID(i);
+					UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
+                    half ditherNoise = DitherAnimatedNoise(i.vertex.xy);
+					half4 mainTexture = tex2D(_MainTex, i.texcoord.xy);
+					half4 detailTexture =
+                        tex2D(_DetailTex, (i.texcoord.xy * _DetailTex_ST.xy) + _DetailTex_ST.zw);
+                    detailTexture = saturate(pow(detailTexture, _DetailTexIntensity));
+
+					half4 finalColor = lerp(_ColorDark, _ColorLight, (mainTexture.r * detailTexture.r) + ditherNoise);
+                    return finalColor;
+				}
+				ENDCG
+			}
+
+
+
+
+	}
+}