Adapt post process to viewport in DefaultRenderingPipeline

packages/dev/core/src/PostProcesses/RenderPipeline/Pipelines/defaultRenderingPipeline.ts

@@ -739,6 +739,8 @@ export class DefaultRenderingPipeline extends PostProcessRenderPipeline implemen
             });
         }
 
+        this._adaptPostProcessesToViewPort();
+
         if (!this._enableMSAAOnFirstPostProcess(this.samples) && this.samples > 1) {
             Logger.Warn("MSAA failed to enable, MSAA is only supported in browsers that support webGL >= 2.0");
         }

packages/dev/core/src/PostProcesses/RenderPipeline/postProcessRenderPipeline.ts

@@ -233,6 +233,22 @@ export class PostProcessRenderPipeline {
         return true;
     }
 
+    /**
+     * Ensures that all post processes in the pipeline are the correct size according to the 
+     * the viewport's required size
+     */
+    protected _adaptPostProcessesToViewPort(): void {
+        const effectKeys = Object.keys(this._renderEffects);
+        for (const effectKey of effectKeys) {
+            const postProcesses = this._renderEffects[effectKey].getPostProcesses();
+            if (postProcesses) {
+                for (const postProcess of postProcesses) {
+                    postProcess.adaptScaleToCurrentViewport = true;
+                }
+            }
+        }
+    }
+
     /**
      * Sets the required values to the prepass renderer.
      * @param prePassRenderer defines the prepass renderer to setup.