From 5617c58145f53355824e74e220970c3c19a63b61 Mon Sep 17 00:00:00 2001
From: Masataka SUMI <santarh@gmail.com>
Date: Wed, 8 Dec 2021 15:58:57 +0900
Subject: [PATCH] =?UTF-8?q?KHR=5Ftexture=5Fbasisu=20=E6=8B=A1=E5=BC=B5?=
 =?UTF-8?q?=E3=82=AF=E3=83=A9=E3=82=B9=E3=81=AE=E5=AE=9A=E7=BE=A9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ExtensionsAndExtras/KHR_texture_basisu.cs | 61 +++++++++++++++++++
 .../KHR_texture_basisu.cs.meta                |  3 +
 2 files changed, 64 insertions(+)
 create mode 100644 Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs
 create mode 100644 Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs.meta

diff --git a/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs b/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs
new file mode 100644
index 000000000..6b8ef550c
--- /dev/null
+++ b/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs
@@ -0,0 +1,61 @@
+using System;
+using UniJSON;
+
+namespace UniGLTF
+{
+    /// <summary>
+    /// https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_basisu
+    /// </summary>
+    [Serializable]
+    public sealed class glTF_KHR_texture_basisu
+    {
+        public const string ExtensionName = "KHR_texture_basisu";
+
+        private static readonly Utf8String ExtensionNameUt8 = Utf8String.From(ExtensionName);
+
+        /// <summary>
+        /// glTF Id
+        /// </summary>
+        [JsonSchema(Minimum = 0)]
+        public int source = -1;
+
+        public static bool TryGet(glTFTextureInfo textureInfo, out glTF_KHR_texture_basisu basisuExtension)
+        {
+            if (textureInfo?.extensions is glTFExtensionImport importedExtensions)
+            {
+                foreach (var kv in importedExtensions.ObjectItems())
+                {
+                    if (kv.Key.GetUtf8String() == ExtensionNameUt8)
+                    {
+                        basisuExtension = Deserialize(kv.Value);
+                        return basisuExtension != null;
+                    }
+                }
+            }
+
+            basisuExtension = default;
+            return false;
+        }
+
+        private static glTF_KHR_texture_basisu Deserialize(JsonNode json)
+        {
+            if (json.Value.ValueType != ValueNodeType.Object) return null;
+
+            foreach (var kv in json.ObjectItems())
+            {
+                var key = kv.Key.GetString();
+                switch (key)
+                {
+                    case nameof(source):
+                        var value = kv.Value.GetInt32();
+                        return new glTF_KHR_texture_basisu
+                        {
+                            source = value,
+                        };
+                }
+            }
+
+            return null;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs.meta b/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs.meta
new file mode 100644
index 000000000..45bed0843
--- /dev/null
+++ b/Assets/UniGLTF/Runtime/UniGLTF/Format/ExtensionsAndExtras/KHR_texture_basisu.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: ed158370be0b4340b9d571c199878591
+timeCreated: 1638944458
\ No newline at end of file