Initial commit

2026-06-03 04:34:26 -07:00 · 2022-01-22 20:13:49 -08:00
parent f9d23e5bcf
commit 687473573d
878 changed files with 70957 additions and 0 deletions
@@ -0,0 +1,70 @@
+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+using UnityEditor;
+using UnityEngine;
+
+namespace Alloy
+{
+    public class AlloyTextureReader{
+        private static Material s_passthroughMat;
+
+        protected static Material PassthroughMaterial {
+            get {
+                if (s_passthroughMat == null) {
+                    s_passthroughMat = new Material(Shader.Find("Hidden/AlloyPassthroughBlit")) { hideFlags = HideFlags.HideAndDontSave };
+                }
+
+                return s_passthroughMat;
+            }
+        }
+
+        private static Material s_normMat;
+
+        protected static Material NormalMaterial {
+            get {
+                if (s_normMat == null) {
+                    s_normMat = new Material(Shader.Find("Hidden/AlloyNormalBlit"));
+
+                    s_normMat.hideFlags = HideFlags.HideAndDontSave;
+                }
+
+                return s_normMat;
+            }
+        }
+
+        public static Texture2D GetReadable(Texture texture, bool normalMap) {
+            if (texture == null) {
+                return null;
+            }
+
+			var texImporter = AssetImporter.GetAtPath(AssetDatabase.GetAssetPath(texture)) as TextureImporter;
+
+			if (texImporter == null) {
+				Debug.LogError("Couldn't find packed map texture in asset database!");
+				return null;
+			}
+
+			bool isEditorInLinearSpace = PlayerSettings.colorSpace == ColorSpace.Linear;
+			bool linear = isEditorInLinearSpace && texImporter.sRGBTexture;
+
+			Shader.SetGlobalFloat("_EditorIsLinear", linear ? 1.0f : 0.0f);
+
+			var render = new RenderTexture(texture.width, texture.height, 0, RenderTextureFormat.ARGB32);
+            Graphics.Blit(texture, render, normalMap ? NormalMaterial : PassthroughMaterial);
+
+			var readTex = new Texture2D(texture.width, texture.height, TextureFormat.ARGB32, false, false);
+
+            Graphics.SetRenderTarget(render);
+            readTex.ReadPixels(new Rect(0, 0, texture.width, texture.height), 0, 0, false);
+            Graphics.SetRenderTarget(null);
+
+            Object.DestroyImmediate(render);
+
+            readTex.hideFlags = HideFlags.HideAndDontSave;
+
+            return readTex;
+        }
+    }
+}