备份CatanBuilding瘦身独立工程

Assets/Scripts/UI/ScratchTicket/ScratchCard/ScratchCardUtils.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace game
+{
+    public class ScratchCardUtils
+    {
+        public static void UpdateTexture2D(Texture2D texture2D, RenderTexture renderTexture, int width, int height)
+        {
+            RenderTexture tmp = RenderTexture.active;
+            RenderTexture.active = renderTexture;
+            texture2D.ReadPixels(new Rect(0, 0, width, height), 0, 0);
+            RenderTexture.active = tmp;
+            texture2D.Apply();
+        }
+
+        public static Texture2D GetReadableCopy(RenderTexture renderTexture, TextureFormat format = TextureFormat.ARGB32, bool mipMaps = false, int width = 0, int height = 0)
+        {
+            var newTexture = default(Texture2D);
+
+            if (renderTexture != null)
+            {
+                if (width <= 0)
+                {
+                    width = renderTexture.width;
+                }
+
+                if (height <= 0)
+                {
+                    height = renderTexture.height;
+                }
+
+                if (CanReadPixels(format) == true)
+                {
+                    newTexture = new Texture2D(width, height, format, mipMaps, false);
+
+                    var tmp = RenderTexture.active;
+                    RenderTexture.active = renderTexture;
+                    newTexture.ReadPixels(new Rect(0, 0, width, height), 0, 0);
+                    RenderTexture.active = tmp;
+
+                    newTexture.Apply();
+                }
+            }
+
+            return newTexture;
+        }
+
+        public static RenderTexture ReleaseRenderTexture(RenderTexture renderTexture)
+        {
+            return ReleaseTemporary(renderTexture);
+        }
+
+        public static RenderTexture ReleaseTemporary(RenderTexture renderTexture)
+        {
+            if (renderTexture != null)
+            {
+                renderTexture.DiscardContents();
+
+                RenderTexture.ReleaseTemporary(renderTexture);
+            }
+
+            return null;
+        }
+
+        public static bool CanReadPixels(TextureFormat format)
+        {
+            if (format == TextureFormat.RGBA32 || format == TextureFormat.ARGB32 || format == TextureFormat.RGB24 || format == TextureFormat.RGBAFloat || format == TextureFormat.RGBAHalf)
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        public static RenderTexture GetRenderTexture(RenderTextureDescriptor desc, bool sRGB)
+        {
+            desc.sRGB = sRGB;
+
+            return GetTemporary(desc, "ScratchCardUtils GetRenderTexture");
+        }
+
+        public static RenderTexture GetTemporary(RenderTextureDescriptor desc, string title)
+        {
+            var renderTexture = RenderTexture.GetTemporary(desc);
+
+            // TODO: For some reason RenderTexture.GetTemporary ignores the useMipMap flag?!
+            if (renderTexture.useMipMap != desc.useMipMap)
+            {
+                renderTexture.Release();
+
+                renderTexture.descriptor = desc;
+
+                renderTexture.Create();
+            }
+
+            return renderTexture;
+        }
+    }
+}