Fix: Add missing callback triggers within texture loaders

dist/preview release/what's new.md

@@ -141,6 +141,7 @@
 - Fixed `CubeTexture` to keep custom `filesList` when serializing/parsing ([julien-moreau](https://github.com/julien-moreau))
 - Fixed `StandardRenderingPipeline` to properly dispose post-processes from attached cameras ([julien-moreau](https://github.com/julien-moreau))
 - Fixed `VolumetricLightScattering` post-process to use a custom vertex shader instead of the depth vertex shader. ([julien-moreau](https://github.com/julien-moreau))
+- Added missing callback triggers within texture loaders ([PierreLeBlond](https://github.com/PierreLeBlond))
 
 ## Breaking changes
 - Setting mesh.scaling to a new vector will no longer automatically call forceUpdate (this should be done manually when needed) ([TrevorDev](https://github.com/TrevorDev))

src/Materials/Textures/Loaders/basisTextureLoader.ts

@@ -75,6 +75,11 @@ export class _BasisTextureLoader implements IInternalTextureLoader {
             BasisTools.LoadTextureFromTranscodeResult(texture, result);
             texture.getEngine()._setCubeMapTextureParams(hasMipmap);
             texture.isReady = true;
+            texture.onLoadedObservable.notifyObservers(texture);
+            texture.onLoadedObservable.clear();
+            if (onLoad) {
+              onLoad();
+            }
         }).catch((err) => {
             Tools.Warn("Failed to transcode Basis file, transcoding may not be supported on this device");
             texture.isReady = true;
@@ -113,4 +118,4 @@ export class _BasisTextureLoader implements IInternalTextureLoader {
 }
 
 // Register the loader.
-Engine._TextureLoaders.push(new _BasisTextureLoader());
+Engine._TextureLoaders.push(new _BasisTextureLoader());

src/Materials/Textures/Loaders/ddsTextureLoader.ts

@@ -103,6 +103,8 @@ export class _DDSTextureLoader implements IInternalTextureLoader {
 
         engine._setCubeMapTextureParams(loadMipmap);
         texture.isReady = true;
+        texture.onLoadedObservable.notifyObservers(texture);
+        texture.onLoadedObservable.clear();
 
         if (onLoad) {
             onLoad({ isDDS: true, width: texture.width, info, data: imgs, texture });

src/Materials/Textures/Loaders/envTextureLoader.ts

@@ -70,6 +70,8 @@ export class _ENVTextureLoader implements IInternalTextureLoader {
             EnvironmentTextureTools.UploadEnvSpherical(texture, info);
             EnvironmentTextureTools.UploadEnvLevelsAsync(texture, data, info).then(() => {
                 texture.isReady = true;
+                texture.onLoadedObservable.notifyObservers(texture);
+                texture.onLoadedObservable.clear();
                 if (onLoad) {
                     onLoad();
                 }

src/Materials/Textures/Loaders/ktxTextureLoader.ts

@@ -87,6 +87,12 @@ export class _KTXTextureLoader implements IInternalTextureLoader {
 
         engine._setCubeMapTextureParams(loadMipmap);
         texture.isReady = true;
+        texture.onLoadedObservable.notifyObservers(texture);
+        texture.onLoadedObservable.clear();
+
+        if (onLoad) {
+            onLoad();
+        }
     }
 
     /**