Add optimizedAnimatedPropUpdates feature flag

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<99a7d3e814f4b037ed4496b6eee4f264>>
+ * @generated SignedSource<<ec90d5adafcfcc96eaf00148f0ba1991>>
  */
 
 /**
@@ -414,6 +414,12 @@ public object ReactNativeFeatureFlags {
   @JvmStatic
   public fun hideOffscreenVirtualViewsOnIOS(): Boolean = accessor.hideOffscreenVirtualViewsOnIOS()
 
+  /**
+   * When enabled, uses optimized platform-specific paths to apply animated props synchronously. On Android, this uses a batched int/double buffer protocol with a single JNI call. On iOS, this passes AnimatedProps directly through the delegate chain and applies them via cloneProps, avoiding the folly::dynamic round-trip.
+   */
+  @JvmStatic
+  public fun optimizedAnimatedPropUpdates(): Boolean = accessor.optimizedAnimatedPropUpdates()
+
   /**
    * Override props at mounting with synchronously mounted (i.e. direct manipulation) props from Native Animated.
    */

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<c2f867597d97dc97c8ded5fbd258c13c>>
+ * @generated SignedSource<<9f7ea26f2a79cb69ec00b8ec763b605e>>
  */
 
 /**
@@ -84,6 +84,7 @@ internal class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAcces
   private var fuseboxNetworkInspectionEnabledCache: Boolean? = null
   private var fuseboxScreenshotCaptureEnabledCache: Boolean? = null
   private var hideOffscreenVirtualViewsOnIOSCache: Boolean? = null
+  private var optimizedAnimatedPropUpdatesCache: Boolean? = null
   private var overrideBySynchronousMountPropsAtMountingAndroidCache: Boolean? = null
   private var perfIssuesEnabledCache: Boolean? = null
   private var perfMonitorV2EnabledCache: Boolean? = null
@@ -686,6 +687,15 @@ internal class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAcces
     return cached
   }
 
+  override fun optimizedAnimatedPropUpdates(): Boolean {
+    var cached = optimizedAnimatedPropUpdatesCache
+    if (cached == null) {
+      cached = ReactNativeFeatureFlagsCxxInterop.optimizedAnimatedPropUpdates()
+      optimizedAnimatedPropUpdatesCache = cached
+    }
+    return cached
+  }
+
   override fun overrideBySynchronousMountPropsAtMountingAndroid(): Boolean {
     var cached = overrideBySynchronousMountPropsAtMountingAndroidCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxInterop.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<8667d7237cea82bb5978cb19582d59c0>>
+ * @generated SignedSource<<615682a04f2be0b548235ca172faa244>>
  */
 
 /**
@@ -156,6 +156,8 @@ public object ReactNativeFeatureFlagsCxxInterop {
 
   @DoNotStrip @JvmStatic public external fun hideOffscreenVirtualViewsOnIOS(): Boolean
 
+  @DoNotStrip @JvmStatic public external fun optimizedAnimatedPropUpdates(): Boolean
+
   @DoNotStrip @JvmStatic public external fun overrideBySynchronousMountPropsAtMountingAndroid(): Boolean
 
   @DoNotStrip @JvmStatic public external fun perfIssuesEnabled(): Boolean

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<17abc72a4045c5695818f254be1783b5>>
+ * @generated SignedSource<<7b05d0055367981a6c6eb6cd79ef93a6>>
  */
 
 /**
@@ -151,6 +151,8 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun hideOffscreenVirtualViewsOnIOS(): Boolean = false
 
+  override fun optimizedAnimatedPropUpdates(): Boolean = false
+
   override fun overrideBySynchronousMountPropsAtMountingAndroid(): Boolean = false
 
   override fun perfIssuesEnabled(): Boolean = false

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsLocalAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<77ba6c5db120016e6e1f8af195ab3690>>
+ * @generated SignedSource<<9b1e9427538a12e34afe0f045f9adc94>>
  */
 
 /**
@@ -88,6 +88,7 @@ internal class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcc
   private var fuseboxNetworkInspectionEnabledCache: Boolean? = null
   private var fuseboxScreenshotCaptureEnabledCache: Boolean? = null
   private var hideOffscreenVirtualViewsOnIOSCache: Boolean? = null
+  private var optimizedAnimatedPropUpdatesCache: Boolean? = null
   private var overrideBySynchronousMountPropsAtMountingAndroidCache: Boolean? = null
   private var perfIssuesEnabledCache: Boolean? = null
   private var perfMonitorV2EnabledCache: Boolean? = null
@@ -754,6 +755,16 @@ internal class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcc
     return cached
   }
 
+  override fun optimizedAnimatedPropUpdates(): Boolean {
+    var cached = optimizedAnimatedPropUpdatesCache
+    if (cached == null) {
+      cached = currentProvider.optimizedAnimatedPropUpdates()
+      accessedFeatureFlags.add("optimizedAnimatedPropUpdates")
+      optimizedAnimatedPropUpdatesCache = cached
+    }
+    return cached
+  }
+
   override fun overrideBySynchronousMountPropsAtMountingAndroid(): Boolean {
     var cached = overrideBySynchronousMountPropsAtMountingAndroidCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsProvider.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<8496c138ce5493df84149940df0de944>>
+ * @generated SignedSource<<6aacf1c52ec159d7084dc106da017856>>
  */
 
 /**
@@ -151,6 +151,8 @@ public interface ReactNativeFeatureFlagsProvider {
 
   @DoNotStrip public fun hideOffscreenVirtualViewsOnIOS(): Boolean
 
+  @DoNotStrip public fun optimizedAnimatedPropUpdates(): Boolean
+
   @DoNotStrip public fun overrideBySynchronousMountPropsAtMountingAndroid(): Boolean
 
   @DoNotStrip public fun perfIssuesEnabled(): Boolean

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<5bac13bb6faeffdd3c5eca800f25b96a>>
+ * @generated SignedSource<<5cafc732183ce679bfc8ebeacccdffb5>>
  */
 
 /**
@@ -423,6 +423,12 @@ class ReactNativeFeatureFlagsJavaProvider
     return method(javaProvider_);
   }
 
+  bool optimizedAnimatedPropUpdates() override {
+    static const auto method =
+        getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("optimizedAnimatedPropUpdates");
+    return method(javaProvider_);
+  }
+
   bool overrideBySynchronousMountPropsAtMountingAndroid() override {
     static const auto method =
         getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("overrideBySynchronousMountPropsAtMountingAndroid");
@@ -897,6 +903,11 @@ bool JReactNativeFeatureFlagsCxxInterop::hideOffscreenVirtualViewsOnIOS(
   return ReactNativeFeatureFlags::hideOffscreenVirtualViewsOnIOS();
 }
 
+bool JReactNativeFeatureFlagsCxxInterop::optimizedAnimatedPropUpdates(
+    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
+  return ReactNativeFeatureFlags::optimizedAnimatedPropUpdates();
+}
+
 bool JReactNativeFeatureFlagsCxxInterop::overrideBySynchronousMountPropsAtMountingAndroid(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
   return ReactNativeFeatureFlags::overrideBySynchronousMountPropsAtMountingAndroid();
@@ -1245,6 +1256,9 @@ void JReactNativeFeatureFlagsCxxInterop::registerNatives() {
       makeNativeMethod(
         "hideOffscreenVirtualViewsOnIOS",
         JReactNativeFeatureFlagsCxxInterop::hideOffscreenVirtualViewsOnIOS),
+      makeNativeMethod(
+        "optimizedAnimatedPropUpdates",
+        JReactNativeFeatureFlagsCxxInterop::optimizedAnimatedPropUpdates),
       makeNativeMethod(
         "overrideBySynchronousMountPropsAtMountingAndroid",
         JReactNativeFeatureFlagsCxxInterop::overrideBySynchronousMountPropsAtMountingAndroid),

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<ad45dce1fafd3bd29078bd54e4206d9f>>
+ * @generated SignedSource<<400ee06a74c3147f8f682257fbf49f82>>
  */
 
 /**
@@ -222,6 +222,9 @@ class JReactNativeFeatureFlagsCxxInterop
   static bool hideOffscreenVirtualViewsOnIOS(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 
+  static bool optimizedAnimatedPropUpdates(
+    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
+
   static bool overrideBySynchronousMountPropsAtMountingAndroid(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<b229243317998e64843f285f86af161c>>
+ * @generated SignedSource<<3bb0009fd52637e16a1760bb407dfbcb>>
  */
 
 /**
@@ -282,6 +282,10 @@ bool ReactNativeFeatureFlags::hideOffscreenVirtualViewsOnIOS() {
   return getAccessor().hideOffscreenVirtualViewsOnIOS();
 }
 
+bool ReactNativeFeatureFlags::optimizedAnimatedPropUpdates() {
+  return getAccessor().optimizedAnimatedPropUpdates();
+}
+
 bool ReactNativeFeatureFlags::overrideBySynchronousMountPropsAtMountingAndroid() {
   return getAccessor().overrideBySynchronousMountPropsAtMountingAndroid();
 }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<86b3267ffa68e0f68280957aa54d5041>>
+ * @generated SignedSource<<95796a46468fa86faadac188ebb7e98a>>
  */
 
 /**
@@ -359,6 +359,11 @@ class ReactNativeFeatureFlags {
    */
   RN_EXPORT static bool hideOffscreenVirtualViewsOnIOS();
 
+  /**
+   * When enabled, uses optimized platform-specific paths to apply animated props synchronously. On Android, this uses a batched int/double buffer protocol with a single JNI call. On iOS, this passes AnimatedProps directly through the delegate chain and applies them via cloneProps, avoiding the folly::dynamic round-trip.
+   */
+  RN_EXPORT static bool optimizedAnimatedPropUpdates();
+
   /**
    * Override props at mounting with synchronously mounted (i.e. direct manipulation) props from Native Animated.
    */