6 files changed, 21 insertions, 8 deletions
diff --git a/libs/WindowManager/Jetpack/Android.bp b/libs/WindowManager/Jetpack/Android.bp
index 4f4364f72fef..7fbbb61e469d 100644
--- a/libs/WindowManager/Jetpack/Android.bp
+++ b/libs/WindowManager/Jetpack/Android.bp
@@ -24,14 +24,14 @@ java_library {
     static_libs: ["window-sidecar"],
     installable: true,
     sdk_version: "core_platform",
-    vendor: true,
+    system_ext_specific: true,
     libs: ["framework", "androidx.annotation_annotation",],
     required: ["androidx.window.sidecar.xml",],
 }
 
 prebuilt_etc {
     name: "androidx.window.sidecar.xml",
-    vendor: true,
+    system_ext_specific: true,
     sub_dir: "permissions",
     src: "androidx.window.sidecar.xml",
     filename_from_src: true,
diff --git a/libs/WindowManager/Jetpack/androidx.window.sidecar.xml b/libs/WindowManager/Jetpack/androidx.window.sidecar.xml
index f88a5f4ae039..359e69fd9bc1 100644
--- a/libs/WindowManager/Jetpack/androidx.window.sidecar.xml
+++ b/libs/WindowManager/Jetpack/androidx.window.sidecar.xml
@@ -17,5 +17,5 @@
 <permissions>
     <library
         name="androidx.window.sidecar"
-        file="/vendor/framework/androidx.window.sidecar.jar"/>
+        file="/system_ext/framework/androidx.window.sidecar.jar"/>
 </permissions>
diff --git a/libs/hwui/JankTracker.cpp b/libs/hwui/JankTracker.cpp
index d25fc4b0b03e..b2c39c90071a 100644
--- a/libs/hwui/JankTracker.cpp
+++ b/libs/hwui/JankTracker.cpp
@@ -139,6 +139,9 @@ void JankTracker::finishFrame(const FrameInfo& frame) {
         (*mGlobalData)->reportJank();
     }
 
+    if (mSwapDeadline < 0) {
+        mSwapDeadline = frame[FrameInfoIndex::IntendedVsync] + mFrameInterval;
+    }
     bool isTripleBuffered = (mSwapDeadline - frame[FrameInfoIndex::IntendedVsync]) > (mFrameInterval * 0.1);
 
     mSwapDeadline = std::max(mSwapDeadline + mFrameInterval,
diff --git a/libs/hwui/JankTracker.h b/libs/hwui/JankTracker.h
index 4460266276f9..b3fbbfe98669 100644
--- a/libs/hwui/JankTracker.h
+++ b/libs/hwui/JankTracker.h
@@ -75,7 +75,7 @@ private:
 
     std::array<int64_t, NUM_BUCKETS> mThresholds;
     int64_t mFrameInterval;
-    nsecs_t mSwapDeadline;
+    nsecs_t mSwapDeadline = -1;
     // The amount of time we will erase from the total duration to account
     // for SF vsync offsets with HWC2 blocking dequeueBuffers.
     // (Vsync + mDequeueBlockTolerance) is the point at which we expect
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index a362bd220936..667a7517a24c 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -139,7 +139,7 @@ void CanvasContext::destroy() {
     mAnimationContext->destroy();
 }
 
-static void setBufferCount(ANativeWindow* window, uint32_t extraBuffers) {
+static void setBufferCount(ANativeWindow* window) {
     int query_value;
     int err = window->query(window, NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &query_value);
     if (err != 0 || query_value < 0) {
@@ -148,7 +148,9 @@ static void setBufferCount(ANativeWindow* window, uint32_t extraBuffers) {
     }
     auto min_undequeued_buffers = static_cast<uint32_t>(query_value);
 
-    int bufferCount = min_undequeued_buffers + 2 + extraBuffers;
+    // We only need to set min_undequeued + 2 because the renderahead amount was already factored into the
+    // query for min_undequeued
+    int bufferCount = min_undequeued_buffers + 2;
     native_window_set_buffer_count(window, bufferCount);
 }
 
@@ -179,7 +181,8 @@ void CanvasContext::setSurface(ANativeWindow* window, bool enableTimeout) {
             mNativeSurface ? mNativeSurface->getNativeWindow() : nullptr, mSwapBehavior);
 
     if (mNativeSurface && !mNativeSurface->didSetExtraBuffers()) {
-        setBufferCount(mNativeSurface->getNativeWindow(), mRenderAheadCapacity);
+        setBufferCount(mNativeSurface->getNativeWindow());
+
     }
 
     mFrameNumber = -1;
diff --git a/libs/hwui/renderthread/EglManager.cpp b/libs/hwui/renderthread/EglManager.cpp
index 5e0471c08d67..7982ab664c1b 100644
--- a/libs/hwui/renderthread/EglManager.cpp
+++ b/libs/hwui/renderthread/EglManager.cpp
@@ -208,8 +208,12 @@ EGLConfig EglManager::loadFP16Config(EGLDisplay display, SwapBehavior swapBehavi
     return config;
 }
 
+extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
 void EglManager::initExtensions() {
     auto extensions = StringUtils::split(eglQueryString(mEglDisplay, EGL_EXTENSIONS));
+    auto extensionsAndroid =
+            StringUtils::split(eglQueryStringImplementationANDROID(mEglDisplay, EGL_EXTENSIONS));
 
     // For our purposes we don't care if EGL_BUFFER_AGE is a result of
     // EGL_EXT_buffer_age or EGL_KHR_partial_update as our usage is covered
@@ -228,9 +232,12 @@ void EglManager::initExtensions() {
     EglExtensions.displayP3 = extensions.has("EGL_EXT_gl_colorspace_display_p3_passthrough");
     EglExtensions.contextPriority = extensions.has("EGL_IMG_context_priority");
     EglExtensions.surfacelessContext = extensions.has("EGL_KHR_surfaceless_context");
-    EglExtensions.nativeFenceSync = extensions.has("EGL_ANDROID_native_fence_sync");
     EglExtensions.fenceSync = extensions.has("EGL_KHR_fence_sync");
     EglExtensions.waitSync = extensions.has("EGL_KHR_wait_sync");
+
+    // EGL_ANDROID_native_fence_sync is not exposed to applications, so access
+    // this through the private Android-specific query instead.
+    EglExtensions.nativeFenceSync = extensionsAndroid.has("EGL_ANDROID_native_fence_sync");
 }
 
 bool EglManager::hasEglContext() {