From c47b92e92cf33ae8bf2f38929e137294397e4735 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 7 Apr 2021 21:33:14 +0800
Subject: +init

---
 Assets/Scripts/Common/ParameterTexture.cs | 190 ++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 Assets/Scripts/Common/ParameterTexture.cs

(limited to 'Assets/Scripts/Common/ParameterTexture.cs')

diff --git a/Assets/Scripts/Common/ParameterTexture.cs b/Assets/Scripts/Common/ParameterTexture.cs
new file mode 100644
index 0000000..3249828
--- /dev/null
+++ b/Assets/Scripts/Common/ParameterTexture.cs
@@ -0,0 +1,190 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+using System;
+
+namespace Coffee.UIEffects
+{
+    public interface IParameterTexture
+    {
+        int parameterIndex { get; set; }
+
+        ParameterTexture paramTex { get; }
+    }
+
+    /// <summary>
+    /// Parameter texture.
+    /// </summary>
+    [System.Serializable]
+    public class ParameterTexture
+    {
+        //################################
+        // Public Members.
+        //################################
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Coffee.UIEffects.ParameterTexture"/> class.
+        /// </summary>
+        /// <param name="channels">Channels.</param>
+        /// <param name="instanceLimit">Instance limit.</param>
+        /// <param name="propertyName">Property name.</param>
+        public ParameterTexture(int channels, int instanceLimit, string propertyName)
+        {
+            _propertyName = propertyName;
+            _channels = ((channels - 1) / 4 + 1) * 4;
+            _instanceLimit = ((instanceLimit - 1) / 2 + 1) * 2;
+            _data = new byte[_channels * _instanceLimit];
+
+            _stack = new Stack<int>(_instanceLimit);
+            for (int i = 1; i < _instanceLimit + 1; i++)
+            {
+                _stack.Push(i);
+            }
+        }
+
+
+        /// <summary>
+        /// Register the specified target.
+        /// </summary>
+        /// <param name="target">Target.</param>
+        public void Register(IParameterTexture target)
+        {
+            Initialize();
+            if (target.parameterIndex <= 0 && 0 < _stack.Count)
+            {
+                target.parameterIndex = _stack.Pop();
+//				Debug.LogFormat("<color=green>@@@ Register {0} : {1}</color>", target, target.parameterIndex);
+            }
+        }
+
+        /// <summary>
+        /// Unregister the specified target.
+        /// </summary>
+        /// <param name="target">Target.</param>
+        public void Unregister(IParameterTexture target)
+        {
+            if (0 < target.parameterIndex)
+            {
+//				Debug.LogFormat("<color=red>@@@ Unregister {0} : {1}</color>", target, target.parameterIndex);
+                _stack.Push(target.parameterIndex);
+                target.parameterIndex = 0;
+            }
+        }
+
+        /// <summary>
+        /// Sets the data.
+        /// </summary>
+        /// <param name="target">Target.</param>
+        /// <param name="channelId">Channel identifier.</param>
+        /// <param name="value">Value.</param>
+        public void SetData(IParameterTexture target, int channelId, byte value)
+        {
+            int index = (target.parameterIndex - 1) * _channels + channelId;
+            if (0 < target.parameterIndex && _data[index] != value)
+            {
+                _data[index] = value;
+                _needUpload = true;
+            }
+        }
+
+        /// <summary>
+        /// Sets the data.
+        /// </summary>
+        /// <param name="target">Target.</param>
+        /// <param name="channelId">Channel identifier.</param>
+        /// <param name="value">Value.</param>
+        public void SetData(IParameterTexture target, int channelId, float value)
+        {
+            SetData(target, channelId, (byte) (Mathf.Clamp01(value) * 255));
+        }
+
+        /// <summary>
+        /// Registers the material.
+        /// </summary>
+        /// <param name="mat">Mat.</param>
+        public void RegisterMaterial(Material mat)
+        {
+            if (_propertyId == 0)
+            {
+                _propertyId = Shader.PropertyToID(_propertyName);
+            }
+
+            if (mat)
+            {
+                mat.SetTexture(_propertyId, _texture);
+            }
+        }
+
+        /// <summary>
+        /// Gets the index of the normalized.
+        /// </summary>
+        /// <returns>The normalized index.</returns>
+        /// <param name="target">Target.</param>
+        public float GetNormalizedIndex(IParameterTexture target)
+        {
+            return ((float) target.parameterIndex - 0.5f) / _instanceLimit;
+        }
+
+
+        //################################
+        // Private Members.
+        //################################
+
+        Texture2D _texture;
+        bool _needUpload;
+        int _propertyId;
+        readonly string _propertyName;
+        readonly int _channels;
+        readonly int _instanceLimit;
+        readonly byte[] _data;
+        readonly Stack<int> _stack;
+        static List<Action> updates;
+
+        /// <summary>
+        /// Initialize this instance.
+        /// </summary>
+        void Initialize()
+        {
+#if UNITY_EDITOR
+            if (!UnityEditor.EditorApplication.isPlaying && UnityEditor.EditorApplication.isPlayingOrWillChangePlaymode)
+            {
+                return;
+            }
+#endif
+            if (updates == null)
+            {
+                updates = new List<Action>();
+                Canvas.willRenderCanvases += () =>
+                {
+                    var count = updates.Count;
+                    for (int i = 0; i < count; i++)
+                    {
+                        updates[i].Invoke();
+                    }
+                };
+            }
+
+            if (!_texture)
+            {
+                bool isLinear = QualitySettings.activeColorSpace == ColorSpace.Linear;
+                _texture = new Texture2D(_channels / 4, _instanceLimit, TextureFormat.RGBA32, false, isLinear);
+                _texture.filterMode = FilterMode.Point;
+                _texture.wrapMode = TextureWrapMode.Clamp;
+
+                updates.Add(UpdateParameterTexture);
+                _needUpload = true;
+            }
+        }
+
+        void UpdateParameterTexture()
+        {
+            if (_needUpload && _texture)
+            {
+                _needUpload = false;
+                _texture.LoadRawTextureData(_data);
+                _texture.Apply(false, false);
+            }
+        }
+    }
+}
-- 
cgit v1.1-26-g67d0