feat: memory metrics for debug panel in renderer (#578)

* Sending memory metrics to renderer

* Added function to get jsHepSize

* SetMemoryUsage poitinting to Main

* Lint fix

Author: dalkia

packages/unity-interface/BrowserInterface.ts

@@ -837,6 +837,10 @@ export class BrowserInterface {
     )
   }
 
+  public async UpdateMemoryUsage() {
+    getUnityInstance().SendMemoryUsageToRenderer()
+  }
+
   public ScenesLoadingFeedback(data: { message: string; loadPercentage: number }) {
     const { message, loadPercentage } = data
     store.dispatch(updateStatusMessage(message, loadPercentage))

packages/unity-interface/IUnityInterface.ts

@@ -201,6 +201,7 @@ export interface IUnityInterface {
   UpdateRealmsInfo(realmsInfo: Partial<RealmsInfoForRenderer>): void
   SetENSOwnerQueryResult(searchInput: string, profiles: Avatar[] | undefined, contentServerBaseUrl: string): void
   SendHeaders(endpoint: string, headers: Record<string, string>): void
+  SendMemoryUsageToRenderer(): void
 
   // *********************************************************************************
   // ************** Builder in world messages **************

packages/unity-interface/UnityInterface.ts

@@ -225,6 +225,19 @@ export class UnityInterface implements IUnityInterface {
     this.SendMessageToUnity('Bridges', 'SetLoadingScreen', JSON.stringify(data))
   }
 
+  public SendMemoryUsageToRenderer() {
+    const memory = (performance as any).memory
+    const jsHeapSizeLimit = memory?.jsHeapSizeLimit
+    const totalJSHeapSize = memory?.totalJSHeapSize
+    const usedJSHeapSize = memory?.usedJSHeapSize
+
+    this.SendMessageToUnity(
+      'Main',
+      'SetMemoryUsage',
+      JSON.stringify({ jsHeapSizeLimit, totalJSHeapSize, usedJSHeapSize })
+    )
+  }
+
   public DeactivateRendering() {
     this.SendMessageToUnity('Main', 'DeactivateRendering')
   }