add displacement mapping example.

Assets/uDesktopDuplication/Examples/Scripts/DisplacementMapping.cs

@@ -0,0 +1,58 @@
+using UnityEngine;
+using UnityEngine.Assertions;
+
+[RequireComponent(typeof(uDesktopDuplication.Texture))]
+public class DisplacementMapping : MonoBehaviour
+{
+    public enum TargetMonitor
+    { 
+        Self,
+        Next,
+        Prev,
+    }
+    public TargetMonitor target = TargetMonitor.Self;
+
+    uDesktopDuplication.Texture uddTexture_;
+
+    int dispTexId_;
+    int dispFactorId_;
+    int tessMinDistId_;
+    int tessMaxDistId_;
+    int tessFactorId_;
+
+    [Range(0.0f, 10f)] public float displacementFactor = 0.1f;
+    [Range(0.1f, 10f)] public float tessellationMinDist = 0.5f;
+    [Range(1.0f, 50f)] public float tessellationMaxDist = 25f;
+    [Range(1.0f, 50f)] public float tessellationFactor = 25f;
+
+    void Start()
+    {
+        uddTexture_ = GetComponent<uDesktopDuplication.Texture>();
+        Assert.IsNotNull(uddTexture_);
+
+        dispTexId_ = Shader.PropertyToID("_DispTex");
+        dispFactorId_ = Shader.PropertyToID("_DispFactor");
+        tessMinDistId_ = Shader.PropertyToID("_TessMinDist");
+        tessMaxDistId_ = Shader.PropertyToID("_TessMaxDist");
+        tessFactorId_ = Shader.PropertyToID("_TessFactor");
+    }
+
+    void Update()
+    {
+        var id = uddTexture_.monitor.id;
+        switch (target) {
+            case TargetMonitor.Self: break;
+            case TargetMonitor.Next: ++id; break;
+            case TargetMonitor.Prev: --id; break;
+        }
+        id = Mathf.Clamp(id, 0, uDesktopDuplication.Manager.monitorCount - 1);
+        var monitor = uDesktopDuplication.Manager.GetMonitor(id);
+        monitor.shouldBeUpdated = true;
+
+        uddTexture_.material.SetTexture(dispTexId_, monitor.texture);
+        uddTexture_.material.SetFloat(dispFactorId_, displacementFactor);
+        uddTexture_.material.SetFloat(tessMinDistId_, tessellationMinDist);
+        uddTexture_.material.SetFloat(tessMaxDistId_, tessellationMaxDist);
+        uddTexture_.material.SetFloat(tessFactorId_, tessellationFactor);
+    }
+}

Assets/uDesktopDuplication/Examples/Scripts/DisplacementMapping.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 859a2446b86e55c43932212872c82748
+timeCreated: 1480146517
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/uDesktopDuplication/Examples/Scripts/GazePointAnalyzer.cs

@@ -43,32 +43,7 @@ public class GazePointAnalyzer : MonoBehaviour
 
     public Vector3 GetWorldPositionFromCoord(int u, int v)
     {
-        var monitor = uddTexture_.monitor;
+        return uddTexture_.GetWorldPositionFromCoord(u, v);
-
-        // Mesh & Scale information
-        var mesh = GetComponent<MeshFilter>().sharedMesh;
-        var width  = transform.localScale.x * (mesh.bounds.extents.x * 2f);
-        var height = transform.localScale.y * (mesh.bounds.extents.y * 2f);
-
-        // Local position (scale included).
-        var x =  (float)(u - monitor.width  / 2) / monitor.width;
-        var y = -(float)(v - monitor.height / 2) / monitor.height;
-        var localPos = new Vector3(width * x, height * y, 0f);
-
-        // Bending
-        if (uddTexture_.bend) {
-            var radius = uddTexture_.radius;
-            var angle = localPos.x / radius;
-            if (uddTexture_.meshForwardDirection == MeshForwardDirection.Y) {
-                localPos.y -= radius * (1f - Mathf.Cos(angle));
-            } else {
-                localPos.z -= radius * (1f - Mathf.Cos(angle));
-            }
-            localPos.x  = radius * Mathf.Sin(angle);
-        }
-
-        // To world position
-        return transform.position + (transform.rotation * localPos);
     }
 
     void CalcAveragePos()

Assets/uDesktopDuplication/Scripts/Texture.cs

@@ -16,7 +16,6 @@ public class Texture : MonoBehaviour
             if (monitor_ != null) {
                 material = GetComponent<Renderer>().material; // clone
                 material.mainTexture = monitor_.texture;
-                material.SetTexture("_DispTex", monitor_.texture);
                 material.SetFloat("_Width", transform.localScale.x);
             }
         }
@@ -204,6 +203,33 @@ public class Texture : MonoBehaviour
             material.DisableKeyword("USE_CLIP");
         }
     }
+
+    public Vector3 GetWorldPositionFromCoord(int u, int v)
+    {
+        // Mesh & Scale information
+        var mesh = GetComponent<MeshFilter>().sharedMesh;
+        var width  = transform.localScale.x * (mesh.bounds.extents.x * 2f);
+        var height = transform.localScale.y * (mesh.bounds.extents.y * 2f);
+
+        // Local position (scale included).
+        var x =  (float)(u - monitor.width  / 2) / monitor.width;
+        var y = -(float)(v - monitor.height / 2) / monitor.height;
+        var localPos = new Vector3(width * x, height * y, 0f);
+
+        // Bending
+        if (bend) {
+            var angle = localPos.x / radius;
+            if (meshForwardDirection == MeshForwardDirection.Y) {
+                localPos.y -= radius * (1f - Mathf.Cos(angle));
+            } else {
+                localPos.z -= radius * (1f - Mathf.Cos(angle));
+            }
+            localPos.x  = radius * Mathf.Sin(angle);
+        }
+
+        // To world position
+        return transform.position + (transform.rotation * localPos);
+    }
 }
 
 }

Assets/uDesktopDuplication/Shaders/uDD_Common.cginc

@@ -79,7 +79,7 @@ inline fixed4 uddGetScreenTexture(float2 uv)
     return uddGetTexture(_MainTex, uv);
 }
 
-inline void uddBendVertex(inout float4 v, half radius, half width, half thickness)
+inline void uddBendVertex(inout float3 v, half radius, half width, half thickness)
 {
 #ifdef BEND_ON
     half angle = width * v.x / radius;

Assets/uDesktopDuplication/Shaders/uDD_Unlit.shader

@@ -31,7 +31,7 @@ half _Thickness;
 v2f vert(appdata v)
 {
     v2f o;
-    uddBendVertex(v.vertex, _Radius, _Width, _Thickness);
+    uddBendVertex(v.vertex.xyz, _Radius, _Width, _Thickness);
     o.vertex = UnityObjectToClipPos(v.vertex);
     o.uv = TRANSFORM_TEX(v.uv, _MainTex);
     return o;

Assets/uDesktopDuplication/Shaders/uDD_Unlit_BlackMask.shader

@@ -35,7 +35,7 @@ half _Thickness;
 v2f vert(appdata v)
 {
     v2f o;
-    uddBendVertex(v.vertex, _Radius, _Width, _Thickness);
+    uddBendVertex(v.vertex.xyz, _Radius, _Width, _Thickness);
     o.vertex = UnityObjectToClipPos(v.vertex);
     o.uv = TRANSFORM_TEX(v.uv, _MainTex);
     return o;

Assets/uDesktopDuplication/Shaders/uDD_Unlit_Displacement.shader

@@ -12,7 +12,7 @@ Properties
     [PowerSlider(10.0)] _Thickness("Thickness", Range(0.01, 10)) = 1
     [KeywordEnum(Off, Front, Back)] _Cull("Culling", Int) = 2
     _DispTex ("Displacement Map", 2D) = "black" {}
-    _Displacement("Displacement Factor", Range(0, 5.0)) = 1
+    _DispFactor("Displacement Factor", Range(0, 5.0)) = 1
     _TessMinDist("Tessellation Min Distance", Range(0.1, 100.0)) = 1.0
     _TessMaxDist("Tessellation Max Distance", Range(0.1, 100.0)) = 5.0
     _TessFactor("Tessellation Factor", Range(0.1, 50.0)) = 10.0
@@ -35,7 +35,7 @@ half _Width;
 half _Thickness;
 Texture2D _DispTex;
 SamplerState sampler_DispTex;
-half _Displacement;
+half _DispFactor;
 half _TessMinDist;
 half _TessMaxDist;
 half _TessFactor;
@@ -76,10 +76,7 @@ struct DsOutput
 HsInput vert(VsInput i)
 {
     HsInput o;
-    float4 v = float4(i.vertex, 1.0);
+    o.f4Position = float4(i.vertex, 1.0);
-    uddBendNormal(v.x, i.normal, _Radius, _Width);
-    uddBendVertex(v, _Radius, _Width, _Thickness);
-    o.f4Position = v;
     o.f3Normal   = i.normal;
     o.f2TexCoord = i.texcoord;
     return o;
@@ -139,7 +136,10 @@ DsOutput domain(
         bary.y * i[1].f2TexCoord + 
         bary.z * i[2].f2TexCoord;
 
-    float disp = length(_DispTex.SampleLevel(sampler_DispTex, o.f2TexCoord, 0)) * _Displacement;
+    uddBendNormal(f3Position.x, f3Normal, _Radius, _Width);
+    uddBendVertex(f3Position, _Radius, _Width, _Thickness);
+
+    float disp = length(_DispTex.SampleLevel(sampler_DispTex, o.f2TexCoord, 0)) * _DispFactor;
     f3Position.xyz += f3Normal * disp;
 
     o.f4Position = mul(UNITY_MATRIX_MVP, float4(f3Position.xyz, 1.0));

Assets/uDesktopDuplication/Shaders/uDD_Unlit_Transparent.shader

@@ -33,7 +33,7 @@ half _Thickness;
 v2f vert(appdata v)
 {
     v2f o;
-    uddBendVertex(v.vertex, _Radius, _Width, _Thickness);
+    uddBendVertex(v.vertex.xyz, _Radius, _Width, _Thickness);
     o.vertex = UnityObjectToClipPos(v.vertex);
     o.uv = TRANSFORM_TEX(v.uv, _MainTex);
     return o;