Add call to disable RT Animations

HWUI already supports disabling RT animations, but there was no correct
way to call it from the application. Adding a call to enable or disable
RT animations on the RenderThread so RT animations can be disabled
during a blast sync.

Test: Builds
Bug: 200284684
Change-Id: Ia1ae3498c38b84b4975f08d37bc764f0c690ed9f

graphics/java/android/graphics/HardwareRenderer.java

@@ -976,12 +976,12 @@ public class HardwareRenderer {
     }
 
     /**
-     * b/68769804: For low FPS experiments.
+     * b/68769804, b/66945974: For low FPS experiments.
      *
      * @hide
      */
     public static void setFPSDivisor(int divisor) {
-        nHackySetRTAnimationsEnabled(divisor <= 1);
+        nSetRtAnimationsEnabled(divisor <= 1);
     }
 
     /**
@@ -1145,6 +1145,16 @@ public class HardwareRenderer {
         nSetDrawingEnabled(drawingEnabled);
     }
 
+    /**
+     * Disable RenderThread animations that schedule draws directly from RenderThread. This is used
+     * when we don't want to de-schedule draw requests that come from the UI thread.
+     *
+     * @hide
+     */
+    public static void setRtAnimationsEnabled(boolean enabled) {
+        nSetRtAnimationsEnabled(enabled);
+    }
+
     private static final class DestroyContextRunnable implements Runnable {
         private final long mNativeInstance;
 
@@ -1451,9 +1461,6 @@ public class HardwareRenderer {
 
     private static native void nSetHighContrastText(boolean enabled);
 
-    // For temporary experimentation b/66945974
-    private static native void nHackySetRTAnimationsEnabled(boolean enabled);
-
     private static native void nSetDebuggingEnabled(boolean enabled);
 
     private static native void nSetIsolatedProcess(boolean enabled);
@@ -1472,4 +1479,6 @@ public class HardwareRenderer {
     private static native void nSetDrawingEnabled(boolean drawingEnabled);
 
     private static native boolean nIsDrawingEnabled();
+
+    private static native void nSetRtAnimationsEnabled(boolean rtAnimationsEnabled);
 }

libs/hwui/jni/android_graphics_HardwareRenderer.cpp

@@ -770,11 +770,6 @@ static void android_view_ThreadedRenderer_setHighContrastText(JNIEnv*, jclass, j
     Properties::enableHighContrastText = enable;
 }
 
-static void android_view_ThreadedRenderer_hackySetRTAnimationsEnabled(JNIEnv*, jclass,
-        jboolean enable) {
-    Properties::enableRTAnimations = enable;
-}
-
 static void android_view_ThreadedRenderer_setDebuggingEnabled(JNIEnv*, jclass, jboolean enable) {
     Properties::debuggingEnabled = enable;
 }
@@ -804,6 +799,11 @@ static void android_view_ThreadedRenderer_preload(JNIEnv*, jclass) {
     RenderProxy::preload();
 }
 
+static void android_view_ThreadedRenderer_setRtAnimationsEnabled(JNIEnv* env, jobject clazz,
+                                                                 jboolean enabled) {
+    RenderProxy::setRtAnimationsEnabled(enabled);
+}
+
 // Plumbs the display density down to DeviceInfo.
 static void android_view_ThreadedRenderer_setDisplayDensityDpi(JNIEnv*, jclass, jint densityDpi) {
     // Convert from dpi to density-independent pixels.
@@ -959,8 +959,6 @@ static const JNINativeMethod gMethods[] = {
          (void*)android_view_ThreadedRenderer_createHardwareBitmapFromRenderNode},
         {"disableVsync", "()V", (void*)android_view_ThreadedRenderer_disableVsync},
         {"nSetHighContrastText", "(Z)V", (void*)android_view_ThreadedRenderer_setHighContrastText},
-        {"nHackySetRTAnimationsEnabled", "(Z)V",
-         (void*)android_view_ThreadedRenderer_hackySetRTAnimationsEnabled},
         {"nSetDebuggingEnabled", "(Z)V", (void*)android_view_ThreadedRenderer_setDebuggingEnabled},
         {"nSetIsolatedProcess", "(Z)V", (void*)android_view_ThreadedRenderer_setIsolatedProcess},
         {"nSetContextPriority", "(I)V", (void*)android_view_ThreadedRenderer_setContextPriority},
@@ -974,6 +972,8 @@ static const JNINativeMethod gMethods[] = {
          (void*)android_view_ThreadedRenderer_isWebViewOverlaysEnabled},
         {"nSetDrawingEnabled", "(Z)V", (void*)android_view_ThreadedRenderer_setDrawingEnabled},
         {"nIsDrawingEnabled", "()Z", (void*)android_view_ThreadedRenderer_isDrawingEnabled},
+        {"nSetRtAnimationsEnabled", "(Z)V",
+         (void*)android_view_ThreadedRenderer_setRtAnimationsEnabled},
 };
 
 static JavaVM* mJvm = nullptr;

libs/hwui/renderthread/RenderProxy.cpp

@@ -424,6 +424,15 @@ void RenderProxy::preload() {
     thread.queue().post([&thread]() { thread.preload(); });
 }
 
+void RenderProxy::setRtAnimationsEnabled(bool enabled) {
+    if (RenderThread::hasInstance()) {
+        RenderThread::getInstance().queue().post(
+                [enabled]() { Properties::enableRTAnimations = enabled; });
+    } else {
+        Properties::enableRTAnimations = enabled;
+    }
+}
+
 } /* namespace renderthread */
 } /* namespace uirenderer */
 } /* namespace android */

libs/hwui/renderthread/RenderProxy.h

@@ -143,6 +143,8 @@ public:
 
     static void preload();
 
+    static void setRtAnimationsEnabled(bool enabled);
+
 private:
     RenderThread& mRenderThread;
     CanvasContext* mContext;