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Packages/com.waveharmonic.crest/Runtime/Scripts/Utility/Shared/Rendering/TextureArrayHelpers.cs

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+// Crest Water System
+// Copyright © 2024 Wave Harmonic. All rights reserved.
+
+using UnityEngine;
+
+namespace WaveHarmonic.Crest
+{
+    static class TextureArrayHelpers
+    {
+        internal const int k_SmallTextureSize = 4;
+
+        public static Texture2D CreateTexture2D(Color color, TextureFormat format)
+        {
+            var texture = new Texture2D(k_SmallTextureSize, k_SmallTextureSize, format, false, false);
+            var pixels = new Color[texture.height * texture.width];
+            for (var i = 0; i < pixels.Length; i++)
+            {
+                pixels[i] = color;
+            }
+            texture.SetPixels(pixels);
+            texture.Apply();
+            return texture;
+        }
+
+        public static Texture2DArray CreateTexture2DArray(Texture2D texture, int depth)
+        {
+            var array = new Texture2DArray(
+                k_SmallTextureSize, k_SmallTextureSize,
+                depth,
+                texture.format,
+                false,
+                false
+            );
+
+            for (var textureArrayIndex = 0; textureArrayIndex < array.depth; textureArrayIndex++)
+            {
+                Graphics.CopyTexture(texture, 0, 0, array, textureArrayIndex, 0);
+            }
+
+            array.Apply();
+
+            return array;
+        }
+    }
+}