Direct .basisu image support

GLTFUtility.asmdef

@@ -1,14 +1,16 @@
 {
     "name": "Siccity.GLTFUtility",
     "references": [
-        "Dracodec"
+        "Dracodec",
+        "Ktx"
     ],
-    "optionalUnityReferences": [],
     "includePlatforms": [],
     "excludePlatforms": [],
     "allowUnsafeCode": false,
     "overrideReferences": false,
     "precompiledReferences": [],
     "autoReferenced": true,
-    "defineConstraints": []
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
 }

Scripts/Spec/GLTFImage.cs

@@ -4,7 +4,9 @@
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
+using KtxUnity;
 using Newtonsoft.Json;
+using Unity.Collections;
 using UnityEngine;
 using UnityEngine.Networking;
 using UnityEngine.Scripting;
@@ -27,13 +29,15 @@ [Preserve] public class GLTFImage {
 		public class ImportResult {
 			public byte[] bytes;
 			public string path;
+			public string mimeType;
 
-			public ImportResult(byte[] bytes, string path = null) {
+			public ImportResult(byte[] bytes, string mimeType, string path = null) {
 				this.bytes = bytes;
 				this.path = path;
+				this.mimeType = mimeType;
 			}
 
-			public IEnumerator CreateTextureAsync(bool linear, Action<Texture2D> onFinish, Action<float> onProgress = null) {
+			public IEnumerator CreateTextureAsync(bool linear, Action<Texture2D> onFinish, string mimeType, Action<float> onProgress = null) {
 				if (!string.IsNullOrEmpty(path)) {
 #if UNITY_EDITOR
 					// Load textures from asset database if we can
@@ -62,7 +66,7 @@ public IEnumerator CreateTextureAsync(bool linear, Action<Texture2D> onFinish, A
 						if (onProgress != null) onProgress(1f);
 
 						if (uwr.isNetworkError || uwr.isHttpError) {
-							Debug.LogError("GLTFImage.cs ToTexture2D() ERROR: " + uwr.error);
+							Debug.LogError("GLTFImage.cs ToTexture2D() ERROR: " + uwr.error+"- "+path);
 						} else {
 							Texture2D tex = DownloadHandlerTexture.GetContent(uwr);
 							tex.name = Path.GetFileNameWithoutExtension(path);
@@ -71,14 +75,27 @@ public IEnumerator CreateTextureAsync(bool linear, Action<Texture2D> onFinish, A
 						uwr.Dispose();
 					}
 				} else {
-					Texture2D tex = new Texture2D(2, 2, TextureFormat.ARGB32, true, linear);
-					if (!tex.LoadImage(bytes)) {
-						Debug.Log("mimeType not supported");
-						yield break;
-					} else onFinish(tex);
+					if(mimeType=="image/png"||mimeType=="image/jpg"||mimeType=="image/jpeg") {
+						Texture2D tex = new Texture2D(2, 2, TextureFormat.ARGB32, true, linear);
+						if (!tex.LoadImage(bytes)) {
+							yield break;
+						} else onFinish(tex);
+					} else if(mimeType=="image/basis") {
+						var nativeArrayBytes = new NativeArray<byte>(bytes,KtxNativeInstance.defaultAllocator);
+						var basisTex = new BasisUniversalTexture();
+						basisTex.onTextureLoaded += delegate(Texture2D tex) {
+							onFinish(tex); 
+						};
+						IEnumerator en = basisTex.LoadBytesRoutine(nativeArrayBytes,false);
+						while (en.MoveNext()) { yield return null; };
+						nativeArrayBytes.Dispose();
+					}
+					else {
+						Debug.LogError("mimeType not supported");
+					}
 				}
 			}
-		}
+        }
 
 		public class ImportTask : Importer.ImportTask<ImportResult[]> {
 			public ImportTask(List<GLTFImage> images, string directoryRoot, GLTFBufferView.ImportTask bufferViewTask) : base(bufferViewTask) {
@@ -93,19 +110,19 @@ public ImportTask(List<GLTFImage> images, string directoryRoot, GLTFBufferView.I
 							if (File.Exists(fullUri)) {
 								// If the file is found at fullUri, read it
 								byte[] bytes = File.ReadAllBytes(fullUri);
-								Result[i] = new ImportResult(bytes, fullUri);
+								Result[i] = new ImportResult(bytes, fullUri,images[i].mimeType);
 							} else if (images[i].uri.StartsWith("data:")) {
 								// If the image is embedded, find its Base64 content and save as byte array
 								string content = images[i].uri.Split(',').Last();
 								byte[] imageBytes = Convert.FromBase64String(content);
-								Result[i] = new ImportResult(imageBytes);
+								Result[i] = new ImportResult(imageBytes,images[i].mimeType);
 							}
 						} else if (images[i].bufferView.HasValue && !string.IsNullOrEmpty(images[i].mimeType)) {
 							GLTFBufferView.ImportResult view = bufferViewTask.Result[images[i].bufferView.Value];
 							byte[] bytes = new byte[view.byteLength];
 							view.stream.Position = view.byteOffset;
 							view.stream.Read(bytes, 0, view.byteLength);
-							Result[i] = new ImportResult(bytes);
+							Result[i] = new ImportResult(bytes,images[i].mimeType);
 						} else {
 							Debug.Log("Couldn't find texture at " + fullUri);
 						}

Scripts/Spec/GLTFTexture.cs

@@ -25,7 +25,7 @@ public ImportResult(GLTFImage.ImportResult image) {
 			/// <summary> Create or return cached texture </summary>
 			public IEnumerator GetTextureCached(bool linear, Action<Texture2D> onFinish, Action<float> onProgress = null) {
 				if (cache == null) {
-					IEnumerator en = image.CreateTextureAsync(linear, x => cache = x, onProgress);
+					IEnumerator en = image.CreateTextureAsync(linear, x => cache = x, image.mimeType, onProgress);
 					while (en.MoveNext()) { yield return null; };
 				}
 				onFinish(cache);