Enable hardware renderer and don't draw after onStop/onDestroy (#2482)

Author: MortimerGoro

app/src/common/shared/org/mozilla/vrbrowser/VRBrowserActivity.java

@@ -273,6 +273,7 @@ protected void onCreate(Bundle savedInstanceState) {
 
     protected void initializeWidgets() {
         UISurfaceTextureRenderer.setUseHardwareAcceleration(SettingsStore.getInstance(getBaseContext()).isUIHardwareAccelerationEnabled());
+        UISurfaceTextureRenderer.setRenderActive(true);
         mWindows = new Windows(this);
         mWindows.setDelegate(new Windows.Delegate() {
             @Override
@@ -360,6 +361,7 @@ protected void onStart() {
         SettingsStore.getInstance(getBaseContext()).setPid(Process.myPid());
         super.onStart();
         TelemetryWrapper.start();
+        UISurfaceTextureRenderer.setRenderActive(true);
     }
 
     @Override
@@ -369,6 +371,7 @@ protected void onStop() {
 
         TelemetryWrapper.stop();
         GleanMetricsService.sessionStop();
+        UISurfaceTextureRenderer.setRenderActive(false);
     }
 
     @Override

app/src/common/shared/org/mozilla/vrbrowser/browser/SettingsStore.java

@@ -51,7 +51,7 @@ SettingsStore getInstance(final @NonNull Context aContext) {
     public final static boolean CONSOLE_LOGS_DEFAULT = false;
     public final static boolean ENV_OVERRIDE_DEFAULT = false;
     public final static boolean MULTIPROCESS_DEFAULT = true;
-    public final static boolean UI_HARDWARE_ACCELERATION_DEFAULT = false;
+    public final static boolean UI_HARDWARE_ACCELERATION_DEFAULT = true;
     public final static boolean PERFORMANCE_MONITOR_DEFAULT = true;
     public final static boolean DRM_PLAYBACK_DEFAULT = false;
     public final static boolean TRACKING_DEFAULT = true;

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/UISurfaceTextureRenderer.java

@@ -12,18 +12,25 @@
 import android.graphics.SurfaceTexture;
 import android.view.Surface;
 
+import androidx.annotation.Nullable;
+
 public class UISurfaceTextureRenderer {
     private int mTextureWidth;
     private int mTextureHeight;
     private SurfaceTexture mSurfaceTexture;
     private Surface mSurface;
     private Canvas mSurfaceCanvas;
     private static boolean sUseHarwareAcceleration;
+    private static boolean sRenderActive = true;
 
     public static void setUseHardwareAcceleration(boolean aEnabled) {
         sUseHarwareAcceleration = aEnabled;
     }
 
+    public static void setRenderActive(boolean aActive) {
+        sRenderActive = aActive;
+    }
+
     UISurfaceTextureRenderer(SurfaceTexture aTexture, int aWidth, int aHeight) {
         mTextureWidth = aWidth;
         mTextureHeight = aHeight;
@@ -63,8 +70,12 @@ void release() {
         mSurfaceTexture = null;
     }
 
+    @Nullable
     Canvas drawBegin() {
         mSurfaceCanvas = null;
+        if (!sRenderActive) {
+            return null;
+        }
         if (mSurface != null) {
             try {
                 if (sUseHarwareAcceleration) {

app/src/main/res/values/non_L10n.xml

@@ -49,7 +49,7 @@
     <string name="settings_key_bookmarks_sync" translatable="false">settings_key_bookmarks_sync</string>
     <string name="settings_key_history_sync" translatable="false">settings_key_history_sync</string>
     <string name="settings_key_whats_new_displayed" translatable="false">settings_key_whats_new_displayed</string>
-    <string name="settings_key_ui_hardware_acceleration" translatable="false">settings_key_ui_hardware_acceleration</string>
+    <string name="settings_key_ui_hardware_acceleration" translatable="false">settings_key_ui_hardware_acceleration_v2</string>
     <string name="settings_key_fxa_last_sync" translatable="false">settings_key_fxa_last_sync</string>
     <string name="settings_key_restore_tabs" translatable="false">settings_key_restore_tabs</string>
     <string name="environment_override_help_url" translatable="false">https://github.com/MozillaReality/FirefoxReality/wiki/Environments</string>