fix:Increase handling for effect.destroyed == true.(增加对effect.destroyed==true 处理)

Author: Lurenyiabc

src/layaAir/laya/display/PostProcess2D.ts

@@ -142,6 +142,11 @@ export class PostProcess2D extends EventDispatcher {
     * @param effect 要添加的后期处理效果。
     */
    addEffect<T extends PostProcess2DEffect>(effect: T): T | null {
+      if (effect.destroyed) {
+         console.error("the target effect is destroyed", effect);
+         return null;
+      }
+
       if (effect.singleton && this.getEffect((effect as any).constructor)) {
          console.error("the target effect is a singleton", effect);
          return null;
@@ -160,11 +165,11 @@ export class PostProcess2D extends EventDispatcher {
     * @param effect 要移除的后期处理效果。
     */
    removeEffect(effect: PostProcess2DEffect) {
-      effect.destroy();
 
       let index = this._effects.indexOf(effect);
       if (index !== -1) {
          this._effects.splice(index, 1);
+         effect.destroy();
          this._onChangeRender();
       }
    }
@@ -179,7 +184,7 @@ export class PostProcess2D extends EventDispatcher {
       this._context.destination = this._context.source;
       for (var i: number = 0, n: number = this._effects.length; i < n; i++) {
          let effect = this._effects[i];
-         if (effect.active) {
+         if (effect.active && !effect.destroyed) {
             effect.render(this._context);
             this._context.indirectTarget = this._context.destination;
          }

src/layaAir/laya/display/PostProcess2DEffect.ts

@@ -3,7 +3,7 @@ import { PostProcess2D, PostProcessRenderContext2D } from "./PostProcess2D";
 export abstract class PostProcess2DEffect {
    protected _active: boolean = true;
    protected _owner: PostProcess2D;
-
+   destroyed = false;
    protected _singleton: boolean = false;
 
    /**
@@ -59,7 +59,8 @@ export abstract class PostProcess2DEffect {
     * @en Destroys the effect.
     * @zh 销毁效果。
     */
-   abstract destroy(): void;
-
+   destroy(): void { 
+      this.destroyed = true;
+   }
 
 }

src/layaAir/laya/display/effect2d/BlurEffect2D.ts

@@ -147,6 +147,8 @@ export class BlurEffect2D extends PostProcess2DEffect {
 
    /** @ignore */
    destroy() {
+      super.destroy();
+
       if (this._destRT) {
          // 回收纹理到对象池
          RenderTexture2D.recoverToPool(this._destRT);

src/layaAir/laya/display/effect2d/ColorEffect2D.ts

@@ -349,6 +349,8 @@ export class ColorEffect2D extends PostProcess2DEffect {
 
     /** @ignore */
     destroy() {
+        super.destroy();
+        
         if (this._destRT) {
             // 回收纹理到对象池
             RenderTexture2D.recoverToPool(this._destRT);

src/layaAir/laya/display/effect2d/GlowEffect2D.ts

@@ -248,6 +248,8 @@ export class GlowEffect2D extends PostProcess2DEffect {
 
     /** @ignore */
     destroy() {
+        super.destroy();
+
         if (this._destRT) {
             // 回收纹理到对象池
             RenderTexture2D.recoverToPool(this._destRT);