Raise the onCreatedEffect notification

src/Materials/PBR/pbrBaseMaterial.ts

@@ -39,6 +39,8 @@ import "../../Shaders/pbr.fragment";
 import "../../Shaders/pbr.vertex";
 import { EffectFallbacks } from '../effectFallbacks';
 
+const onCreatedEffectParameters = { effect: null as unknown as Effect, subMesh: null as unknown as Nullable<SubMesh> };
+
 /**
  * Manages the defines for the PBR Material.
  * @hidden
@@ -982,6 +984,12 @@ export abstract class PBRBaseMaterial extends PushMaterial {
         let effect = this._prepareEffect(mesh, defines, this.onCompiled, this.onError, useInstances);
 
         if (effect) {
+            if (this._onEffectCreatedObservable) {
+                onCreatedEffectParameters.effect = effect;
+                onCreatedEffectParameters.subMesh = subMesh;
+                this._onEffectCreatedObservable.notifyObservers(onCreatedEffectParameters);
+            }
+
             // Use previous effect while new one is compiling
             if (this.allowShaderHotSwapping && previousEffect && !effect.isReady()) {
                 effect = previousEffect;
@@ -1508,6 +1516,11 @@ export abstract class PBRBaseMaterial extends PushMaterial {
 
         const defines = new PBRMaterialDefines();
         const effect = this._prepareEffect(mesh, defines, undefined, undefined, localOptions.useInstances, localOptions.clipPlane)!;
+        if (this._onEffectCreatedObservable) {
+            onCreatedEffectParameters.effect = effect;
+            onCreatedEffectParameters.subMesh = null;
+            this._onEffectCreatedObservable.notifyObservers(onCreatedEffectParameters);
+        }
         if (effect.isReady()) {
             if (onCompiled) {
                 onCompiled(this);

src/Materials/shaderMaterial.ts

@@ -1,4 +1,5 @@
 import { SerializationHelper } from "../Misc/decorators";
+import { Nullable } from "../types";
 import { Scene } from "../scene";
 import { Matrix, Vector3, Vector2, Vector4 } from "../Maths/math.vector";
 import { AbstractMesh } from "../Meshes/abstractMesh";
@@ -8,12 +9,14 @@ import { VertexBuffer } from "../Meshes/buffer";
 import { BaseTexture } from "../Materials/Textures/baseTexture";
 import { Texture } from "../Materials/Textures/texture";
 import { MaterialHelper } from "./materialHelper";
-import { IEffectCreationOptions } from "./effect";
+import { Effect, IEffectCreationOptions } from "./effect";
 import { Material } from "./material";
 import { _TypeStore } from '../Misc/typeStore';
 import { Color3, Color4 } from '../Maths/math.color';
 import { EffectFallbacks } from './effectFallbacks';
 
+const onCreatedEffectParameters = { effect: null as unknown as Effect, subMesh: null as unknown as Nullable<SubMesh> };
+
 /**
  * Defines the options associated with the creation of a shader material.
  */
@@ -597,6 +600,11 @@ export class ShaderMaterial extends Material {
             onError: this.onError
         }, engine);
 
+        if (this._onEffectCreatedObservable) {
+            onCreatedEffectParameters.effect = this._effect;
+            this._onEffectCreatedObservable.notifyObservers(onCreatedEffectParameters);
+        }
+
         if (!this._effect.isReady()) {
             return false;
         }

src/Materials/standardMaterial.ts

@@ -31,7 +31,9 @@ import "../Shaders/default.fragment";
 import "../Shaders/default.vertex";
 import { Constants } from "../Engines/constants";
 import { EffectFallbacks } from './effectFallbacks';
-import { IEffectCreationOptions } from './effect';
+import { Effect, IEffectCreationOptions } from './effect';
+
+const onCreatedEffectParameters = { effect: null as unknown as Effect, subMesh: null as unknown as Nullable<SubMesh> };
 
 /** @hidden */
 export class StandardMaterialDefines extends MaterialDefines implements IImageProcessingConfigurationDefines {
@@ -1175,6 +1177,12 @@ export class StandardMaterial extends PushMaterial {
             }, engine);
 
             if (effect) {
+                if (this._onEffectCreatedObservable) {
+                    onCreatedEffectParameters.effect = effect;
+                    onCreatedEffectParameters.subMesh = subMesh;
+                    this._onEffectCreatedObservable.notifyObservers(onCreatedEffectParameters);
+                }
+
                 // Use previous effect while new one is compiling
                 if (this.allowShaderHotSwapping && previousEffect && !effect.isReady()) {
                     effect = previousEffect;