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Assets/ThirdParty/PostProcessing/Runtime/Utils/RenderTextureFactory.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+
+namespace UnityEngine.PostProcessing
+{
+    public sealed class RenderTextureFactory : IDisposable
+    {
+        HashSet<RenderTexture> m_TemporaryRTs;
+
+        public RenderTextureFactory()
+        {
+            m_TemporaryRTs = new HashSet<RenderTexture>();
+        }
+
+        public RenderTexture Get(RenderTexture baseRenderTexture)
+        {
+            return Get(
+                baseRenderTexture.width,
+                baseRenderTexture.height,
+                baseRenderTexture.depth,
+                baseRenderTexture.format,
+                baseRenderTexture.sRGB ? RenderTextureReadWrite.sRGB : RenderTextureReadWrite.Linear,
+                baseRenderTexture.filterMode,
+                baseRenderTexture.wrapMode
+                );
+        }
+
+        public RenderTexture Get(int width, int height, int depthBuffer = 0, RenderTextureFormat format = RenderTextureFormat.ARGBHalf, RenderTextureReadWrite rw = RenderTextureReadWrite.Default, FilterMode filterMode = FilterMode.Bilinear, TextureWrapMode wrapMode = TextureWrapMode.Clamp, string name = "FactoryTempTexture")
+        {
+            var rt = RenderTexture.GetTemporary(width, height, depthBuffer, format, rw); // add forgotten param rw
+            rt.filterMode = filterMode;
+            rt.wrapMode = wrapMode;
+            rt.name = name;
+            m_TemporaryRTs.Add(rt);
+            return rt;
+        }
+
+        public void Release(RenderTexture rt)
+        {
+            if (rt == null)
+                return;
+
+            if (!m_TemporaryRTs.Contains(rt))
+                throw new ArgumentException(string.Format("Attempting to remove a RenderTexture that was not allocated: {0}", rt));
+
+            m_TemporaryRTs.Remove(rt);
+            RenderTexture.ReleaseTemporary(rt);
+        }
+
+        public void ReleaseAll()
+        {
+            var enumerator = m_TemporaryRTs.GetEnumerator();
+            while (enumerator.MoveNext())
+                RenderTexture.ReleaseTemporary(enumerator.Current);
+
+            m_TemporaryRTs.Clear();
+        }
+
+        public void Dispose()
+        {
+            ReleaseAll();
+        }
+    }
+}