add DFVolume feature

Unity_2018_Frozen/Assets/Frozen/Frozen.unity

@@ -557,7 +557,96 @@ MonoBehaviour:
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@@ -951,6 +1040,51 @@ MonoBehaviour:
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@@ -1085,7 +1219,6 @@ GameObject:
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@@ -1128,20 +1261,6 @@ MeshRenderer:
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@@ -1220,6 +1339,90 @@ Transform:
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@@ -1333,7 +1536,7 @@ Prefab:
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@@ -1385,11 +1588,11 @@ Prefab:
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       propertyPath: m_advectionType
@@ -1451,6 +1654,10 @@ Prefab:
       propertyPath: timeStepMultiplier
       value: 5
       objectReference: {fileID: 0}
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@@ -1551,6 +1758,90 @@ MonoBehaviour:
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+  m_Radius: 0.5
+  m_Center: {x: 0, y: 0, z: 0}
+--- !u!33 &1555216965
+MeshFilter:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 1555216961}
+  m_Mesh: {fileID: 10207, guid: 0000000000000000e000000000000000, type: 0}
 --- !u!1 &1579390332
 GameObject:
   m_ObjectHideFlags: 0
@@ -2263,3 +2754,35 @@ Transform:
   m_Father: {fileID: 0}
   m_RootOrder: 5
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &2145210097
+GameObject:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  serializedVersion: 5
+  m_Component:
+  - component: {fileID: 2145210098}
+  m_Layer: 0
+  m_Name: Obstacle
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &2145210098
+Transform:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 2145210097}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_Children:
+  - {fileID: 711251200}
+  - {fileID: 1493994143}
+  - {fileID: 1555216962}
+  - {fileID: 785725809}
+  m_Father: {fileID: 1007466426}
+  m_RootOrder: 0
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}

Unity_2018_Frozen/Assets/Frozen/ParticleUniforms.asset

@@ -13,7 +13,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   numRate: 1
   movement: 1
-  geomSize: 0.306
+  geomSize: 0.274
   velocityDamping: 0.95
   lifeDuration: 7
   lifeVariation: 0

Unity_2018_Frozen/Assets/Frozen/Script/SnowflakeParticleUpdater.cs

@@ -32,6 +32,11 @@ namespace UltraCombos.Frozen
         [Range(0, 1)]
         public float rate = 1.0f;
 
+        [SerializeField] DFVolume.VolumeData volumeData;
+        ComputeBuffer volume_buffer;
+
+        [SerializeField, Range(0, 1)]
+        float value = 0;
         [SerializeField]
         string debug;
 
@@ -53,12 +58,15 @@ namespace UltraCombos.Frozen
                 OnReset();
             }
 
+            debug = string.Format("{0}", volumeData.data[(int)Mathf.Min(volumeData.data.Count * value, volumeData.data.Count - 1)]);
+
             UpdateParticle(Time.fixedDeltaTime);
         }
 
         private void OnDestroy()
         {
             Utilities.Release(ref args_buffer);
+            Utilities.Release(ref volume_buffer);
         }
 
         private void OnReset()
@@ -72,6 +80,12 @@ namespace UltraCombos.Frozen
                 args_buffer = shader.CreateIndirectComputeArgsBuffer(maxParticles, 1, 1);
             }
 
+            {
+                var data = volumeData.data;
+                volume_buffer = new ComputeBuffer(data.Count, sizeof(float) * 4);
+                volume_buffer.SetData(data);
+            }
+
             {
                 buffer_data = new List<Particle>();
                 yield return Utilities.GetRandomParticleData(maxParticles, buffer_data);
@@ -106,6 +120,8 @@ namespace UltraCombos.Frozen
                 shader.SetBuffer(0, "home_position_buffer", kinectOpticalFlow.HomePositionBuffer);
                 shader.SetBuffer(0, "home_velocity_buffer", kinectOpticalFlow.HomeVelocityBuffer);
                 shader.SetBuffer(0, "fluid_velocity_buffer", smokeFluidSim.VelocityBuffer);
+                shader.SetBuffer(0, "volume_data", volume_buffer);
+                shader.SetTexture(0, "DFVolume", volumeData.texture);
 
                 shader.DispatchIndirect(0, args_buffer);
             }

Unity_2018_Frozen/Assets/Frozen/Shader/SnowflakeParticleUpdate.compute

@@ -25,6 +25,14 @@ RWStructuredBuffer<ParticleUniforms> uniform_buffer;
 RWStructuredBuffer<float4> home_position_buffer;
 RWStructuredBuffer<float4> home_velocity_buffer;
 RWStructuredBuffer<float3> fluid_velocity_buffer;
+RWStructuredBuffer<float4> volume_data;
+Texture3D<float4> DFVolume;
+SamplerState samplerDFVolume;
+
+float4 SampleVolume(float3 p)
+{
+	return DFVolume.SampleLevel(samplerDFVolume, p, 0);
+}
 
 [numthreads(WORK_GROUP_SIZE, 1, 1)]
 void CSMain(uint3 id : SV_DispatchThreadID)
@@ -107,11 +115,29 @@ void CSMain(uint3 id : SV_DispatchThreadID)
 	// fluid
 	{
 		float3 dim = ((p.position - FluidGridRoot) / FluidGridSize) * FluidGridDim;
+		dim = clamp(dim, float3(0, 0, 0), FluidGridDim - 1);
 		int idx = (int)dim.x + (int)dim.y * FluidGridDim.x + (int)dim.z * FluidGridDim.x * FluidGridDim.y;
 		float3 F = fluid_velocity_buffer[idx].xyz * 1.0f;
 		acc += F * uni.impulseStrength;
 	}
 
+	// volume
+	{
+		//float3 volume_dim = float3(50, 50, 50);
+		//float3 dim = ((p.position - FluidGridRoot) / FluidGridSize) * volume_dim;
+		//dim = clamp(dim, float3(0, 0, 0), volume_dim - 1);
+		//int idx = (int)dim.x + (int)dim.y * volume_dim.x + (int)dim.z * volume_dim.x * volume_dim.y;
+		float4 df = SampleVolume((p.position - FluidGridRoot) / FluidGridSize);
+		float3 F = -df.xyz * pow(df.w / 0.5, 2.2);
+		F += cross(-df.xyz, float3(1, 0, 0)) * (1.0 - saturate(df.w / 0.2)) * 0.05;
+		//float4 data = volume_data[idx];
+		//float3 F = -data.xyz * pow(data.w, 2.2);
+		//F += cross(-data.xyz, float3(1, 0, 0)) * (1.0 - saturate(data.w)) * 0.1;
+		//if (data.w < 0.1) F += data.xyz * 10.0;
+		//float3 F = lerp(cross(data.xyz, p.velocity), -data.xyz, saturate(data.w));
+		acc += F * 60.0;
+	}
+
 	// cosine gradient
 	{
 		float t = (uni.lifeDuration > 0.1f) ? clamp(p.life, 0.0f, 1.0f) : factor;

Unity_2018_Frozen/Assets/KinectOpticalFlow/KinectOpticalFlow.cs

@@ -50,7 +50,7 @@ namespace UltraCombos
         public ComputeBuffer HomePositionBuffer { get { return home_position_buffer; } }
         ComputeBuffer home_velocity_buffer;
         public ComputeBuffer HomeVelocityBuffer { get { return home_velocity_buffer; } }
-        ComputeBuffer count_buffer;
+        ComputeBuffer home_count_buffer;
         int home_count = 0;
         public int HomeCount { get { return home_count; } }
 
@@ -71,7 +71,7 @@ namespace UltraCombos
             {
                 home_position_buffer = new ComputeBuffer(512 * 424, sizeof(float) * 4, ComputeBufferType.Append);
                 home_velocity_buffer = new ComputeBuffer(512 * 424, sizeof(float) * 4, ComputeBufferType.Append);
-                count_buffer = new ComputeBuffer(1, sizeof(int), ComputeBufferType.Raw);
+                home_count_buffer = new ComputeBuffer(1, sizeof(int), ComputeBufferType.Raw);
             }
         }
         
@@ -110,9 +110,9 @@ namespace UltraCombos
             }
 
             {
-                ComputeBuffer.CopyCount(home_position_buffer, count_buffer, 0);
+                ComputeBuffer.CopyCount(home_position_buffer, home_count_buffer, 0);
-                var data = new int[count_buffer.count];
+                var data = new int[home_count_buffer.count];
-                count_buffer.GetData(data);
+                home_count_buffer.GetData(data);
                 home_count = data[0];
                 debugInfo = string.Format("{0}", home_count);
                 home_position_buffer.SetCounterValue(0);
@@ -170,6 +170,10 @@ namespace UltraCombos
             clear_grid_buffer_args_buffer.Release();
             args_buffer.Release();
             KinectGridBuffer.Release();
+
+            home_position_buffer.Release();
+            home_velocity_buffer.Release();
+            home_count_buffer.Release();
         }
 
     }

Unity_2018_Frozen/Assets/Klak/DFVolume.meta

@@ -0,0 +1,10 @@
+fileFormatVersion: 2
+guid: ca518c47d081cd74da803a9492ef8bc7
+folderAsset: yes
+timeCreated: 1520409176
+licenseType: Free
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: aab843967d2cba349b396e899e4a4f3e
+folderAsset: yes
+timeCreated: 1495866268
+licenseType: Pro
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeDataEditor.cs

@@ -0,0 +1,17 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using UnityEngine;
+using UnityEditor;
+
+namespace DFVolume
+{
+    [CustomEditor(typeof(VolumeData))]
+    class VolumeDataEditor : Editor
+    {
+        public override void OnInspectorGUI()
+        {
+            // There is nothing to show in the inspector.
+        }
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeDataEditor.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: e4bc68d473b019949ad3452e429eca70
+timeCreated: 1495873608
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeSamplerEditor.cs

@@ -0,0 +1,70 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace DFVolume
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(VolumeSampler))]
+    class VolumeSamplerEditor : Editor
+    {
+        SerializedProperty _resolution;
+        SerializedProperty _extent;
+
+        void OnEnable()
+        {
+            _resolution = serializedObject.FindProperty("_resolution");
+            _extent = serializedObject.FindProperty("_extent");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(_resolution);
+            EditorGUILayout.PropertyField(_extent);
+
+            serializedObject.ApplyModifiedProperties();
+
+            if (GUILayout.Button("Create Volume Data")) CreateVolumeData();
+
+            CheckSkewedTransform();
+        }
+
+        void CreateVolumeData()
+        {
+            var output = new List<Object>();
+
+            foreach (VolumeSampler sampler in targets)
+            {
+                var path = "Assets/New Volume Data.asset";
+                path = AssetDatabase.GenerateUniqueAssetPath(path);
+
+                var asset = ScriptableObject.CreateInstance<VolumeData>();
+                asset.Initialize(sampler);
+
+                AssetDatabase.CreateAsset(asset, path);
+                AssetDatabase.AddObjectToAsset(asset.texture, asset);
+            }
+
+            AssetDatabase.SaveAssets();
+
+            EditorUtility.FocusProjectWindow();
+            Selection.objects = output.ToArray();
+        }
+
+        void CheckSkewedTransform()
+        {
+            if (targets.Any(o => ((Component)o).transform.lossyScale != Vector3.one))
+                EditorGUILayout.HelpBox(
+                    "Using scale in transform may introduce error in output volumes.",
+                    MessageType.Warning
+                );
+        }
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeSamplerEditor.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 4672eacadf8f922469c2d31bc2c8cc98
+timeCreated: 1495866282
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeVisualizer.cs

@@ -0,0 +1,35 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using UnityEngine;
+using UnityEditor;
+
+namespace DFVolume
+{
+    [CanEditMultipleObjects]
+    [CustomEditor(typeof(VolumeVisualizer))]
+    class VolumeVisualizerEditor : Editor
+    {
+        SerializedProperty _data;
+        SerializedProperty _mode;
+        SerializedProperty _depth;
+
+        void OnEnable()
+        {
+            _data = serializedObject.FindProperty("_data");
+            _mode = serializedObject.FindProperty("_mode");
+            _depth = serializedObject.FindProperty("_depth");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(_data);
+            EditorGUILayout.PropertyField(_mode);
+            EditorGUILayout.PropertyField(_depth);
+
+            serializedObject.ApplyModifiedProperties();
+        }
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/Editor/VolumeVisualizer.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 9e6edf4b9a972704f92c4329f66b08e5
+timeCreated: 1495949435
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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Unity_2018_Frozen/Assets/Klak/DFVolume/Shader.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: f9932d3e3540d7d42967c0084417fc5c
+folderAsset: yes
+timeCreated: 1495885014
+licenseType: Pro
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/Shader/Visualizer.shader

@@ -0,0 +1,60 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+Shader "Hidden/DFVolume/Visualizer"
+{
+	Properties
+	{
+		_MainTex("", 3D) = "white" {}
+	}
+
+    CGINCLUDE
+
+    #include "UnityCG.cginc"
+
+    struct appdata
+    {
+        float4 vertex : POSITION;
+        float2 texcoord : TEXCOORD;
+    };
+
+    struct v2f
+    {
+        float4 vertex : SV_POSITION;
+        float2 texcoord : TEXCOORD;
+    };
+
+    sampler3D _MainTex;
+    float _Depth;
+    float _Mode;
+    
+    v2f vert(appdata v)
+    {
+        v2f o;
+        o.vertex = UnityObjectToClipPos(v.vertex);
+        o.texcoord = v.texcoord;
+        return o;
+    }
+    
+    fixed4 frag(v2f i) : SV_Target
+    {
+        fixed4 data = tex3D(_MainTex, float3(i.texcoord, _Depth));
+        fixed dist = abs(0.5 - frac(data.a * 10)) * 2;
+        fixed3 grad = data.rgb + 0.5;
+        return fixed4(lerp(dist, grad, _Mode), 1);
+    }
+
+    ENDCG
+
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			ENDCG
+		}
+	}
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/Shader/Visualizer.shader.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: e87e89fb693f01e47ac90f63e832ed83
+timeCreated: 1495876326
+licenseType: Pro
+ShaderImporter:
+  defaultTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeData.cs

@@ -0,0 +1,54 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace DFVolume
+{
+    public class VolumeData : ScriptableObject
+    {
+        #region Exposed attributes
+
+        [SerializeField] Texture3D _texture;
+
+        public Texture3D texture {
+            get { return _texture; }
+        }
+
+        List<Vector4> _data;
+
+        public List<Vector4> data
+        {
+            get { return _data; }
+        }
+
+        #endregion
+
+#if UNITY_EDITOR
+
+        #region Editor functions
+
+        public void Initialize(VolumeSampler sampler)
+        {
+            var bmp = sampler.GenerateBitmap();
+
+            var dim = sampler.resolution;
+            _texture = new Texture3D(dim, dim, dim, TextureFormat.RGBAHalf, true);
+
+            _texture.name = "Distance Field Texture";
+            _texture.filterMode = FilterMode.Bilinear;
+            _texture.wrapMode = TextureWrapMode.Clamp;
+            _texture.SetPixels(bmp);
+            _texture.Apply();
+
+            _data = new List<Vector4>();
+            foreach (var c in bmp)
+                _data.Add(new Vector4(c.r, c.g, c.b, c.a));
+        }
+
+        #endregion
+
+        #endif
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeData.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 432ac308e27df9f4ebdfd3523b98cad3
+timeCreated: 1495869190
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeSampler.cs

@@ -0,0 +1,122 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using UnityEngine;
+
+namespace DFVolume
+{
+    public class VolumeSampler : MonoBehaviour
+    {
+        #region Exposed attributes
+
+        [SerializeField] int _resolution = 50;
+
+        public int resolution {
+            get { return _resolution; }
+        }
+
+        [SerializeField] float _extent = 0.5f;
+
+        public float extent {
+            get { return _extent; }
+        }
+
+        #endregion
+
+        #if UNITY_EDITOR
+
+        #region Editor functions
+
+        void OnDrawGizmos()
+        {
+            Gizmos.matrix = transform.localToWorldMatrix;
+            Gizmos.color = Color.yellow;
+            Gizmos.DrawWireCube(Vector3.zero, Vector3.one * _extent * 2);
+        }
+
+        public Color[] GenerateBitmap()
+        {
+            // Generate a distance field.
+            var df = new float[_resolution * _resolution * _resolution];
+
+            for (var xi = 0; xi < _resolution; xi++)
+            {
+                var x = 2.0f * xi / (_resolution - 1) - 1;
+                for (var yi = 0; yi < _resolution; yi++)
+                {
+                    var y = 2.0f * yi / (_resolution - 1) - 1;
+                    for (var zi = 0; zi < _resolution; zi++)
+                    {
+                        var z = 2.0f * zi / (_resolution - 1) - 1;
+
+                        var pt = new Vector3(x, y, z) * _extent;
+                        pt = transform.TransformPoint(pt);
+
+                        var dist = SearchDistance(pt) * 0.5f / _extent;
+                        df[GetIndex(xi, yi, zi)] = dist;
+                    }
+                }
+            }
+
+            // Compute gradients and pack them into a bitmap.
+            var bmp = new Color[df.Length];
+            var dds2 = (_resolution - 1) / 2.0f;
+
+            for (var xi = 0; xi < _resolution; xi++)
+            {
+                for (var yi = 0; yi < _resolution; yi++)
+                {
+                    for (var zi = 0; zi < _resolution; zi++)
+                    {
+                        var d = df[GetIndex(xi, yi, zi)];
+                        var dx0 = df[GetIndex(xi - 1, yi, zi)];
+                        var dx1 = df[GetIndex(xi + 1, yi, zi)];
+                        var dy0 = df[GetIndex(xi, yi - 1, zi)];
+                        var dy1 = df[GetIndex(xi, yi + 1, zi)];
+                        var dz0 = df[GetIndex(xi, yi, zi - 1)];
+                        var dz1 = df[GetIndex(xi, yi, zi + 1)];
+
+                        bmp[GetIndex(xi, yi, zi)] = new Color(
+                            (dx1 - dx0) * dds2,
+                            (dy1 - dy0) * dds2,
+                            (dz1 - dz0) * dds2,
+                            d
+                        );
+                    }
+                }
+            }
+
+            return bmp;
+        }
+
+        #endregion
+
+        #region Private functions
+
+        int GetIndex(int xi, int yi, int zi)
+        {
+            xi = Mathf.Clamp(xi, 0, _resolution - 1);
+            yi = Mathf.Clamp(yi, 0, _resolution - 1);
+            zi = Mathf.Clamp(zi, 0, _resolution - 1);
+            return xi + _resolution * (yi + _resolution * zi);
+        }
+
+        float SearchDistance(Vector3 pt)
+        {
+            var r = _extent;
+            var s = _extent * 0.5f;
+
+            for (var i = 0; i < 10; i++)
+            {
+                r += (Physics.CheckSphere(pt, r) ? -1 : 1) * s;
+                s *= 0.5f;
+            }
+
+            return r;
+        }
+
+        #endregion
+
+        #endif
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeSampler.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 8b8cecf65d18af24daf10718a8526e01
+timeCreated: 1495864966
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeVisualizer.cs

@@ -0,0 +1,49 @@
+// DFVolume - Distance field volume generator for Unity
+// https://github.com/keijiro/DFVolume
+
+using UnityEngine;
+
+namespace DFVolume
+{
+    [ExecuteInEditMode]
+    public class VolumeVisualizer : MonoBehaviour
+    {
+        enum Mode { Distance, Gradient }
+
+        [SerializeField] VolumeData _data;
+        [SerializeField] Mode _mode;
+        [SerializeField, Range(0, 1)] float _depth = 0.5f;
+
+        [SerializeField, HideInInspector] Mesh _quadMesh;
+        [SerializeField, HideInInspector] Shader _shader;
+
+        Material _material;
+
+        void OnDestroy()
+        {
+            if (_material != null)
+                if (Application.isPlaying)
+                    Destroy(_material);
+                else
+                    DestroyImmediate(_material);
+        }
+
+        void Update()
+        {
+            if (_material == null)
+            {
+                _material = new Material(_shader);
+                _material.hideFlags = HideFlags.DontSave;
+            }
+
+            _material.SetTexture("_MainTex", _data.texture);
+            _material.SetFloat("_Depth", _depth);
+            _material.SetFloat("_Mode", (int)_mode);
+
+            Graphics.DrawMesh(
+                _quadMesh, transform.localToWorldMatrix,
+                _material, gameObject.layer
+            );
+        }
+    }
+}

Unity_2018_Frozen/Assets/Klak/DFVolume/VolumeVisualizer.cs.meta

@@ -0,0 +1,15 @@
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