Fix Rendering Pipeline addCamera (#8533)

src/PostProcesses/RenderPipeline/Pipelines/defaultRenderingPipeline.ts

@@ -581,6 +581,14 @@ export class DefaultRenderingPipeline extends PostProcessRenderPipeline implemen
             } else {
                 this._scene.imageProcessingConfiguration.applyByPostProcess = false;
             }
+
+            if (!this.cameras || this.cameras.length === 0) {
+                this._scene.imageProcessingConfiguration.applyByPostProcess = false;
+            }
+
+            if (!this.imageProcessing.getEffect()) {
+                this.imageProcessing._updateParameters();
+            }
         }
 
         if (this.sharpenEnabled) {

src/PostProcesses/imageProcessingPostProcess.ts

@@ -394,7 +394,10 @@ export class ImageProcessingPostProcess extends PostProcess {
         return "ImageProcessingPostProcess";
     }
 
-    protected _updateParameters(): void {
+    /**
+     * @hidden
+     */
+    public _updateParameters(): void {
         this._defines.FROMLINEARSPACE = this._fromLinearSpace;
         this.imageProcessingConfiguration.prepareDefines(this._defines, true);
         var defines = "";