diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index db8786d..2821b51 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -20,6 +20,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <com_android_graphics_libgui_flags.h>
+
 #include <android/gui/BnWindowInfosReportedListener.h>
 #include <android/gui/DisplayState.h>
 #include <android/gui/EdgeExtensionParameters.h>
@@ -2330,6 +2332,10 @@
     return *this;
 }
 
+bool SurfaceComposerClient::flagEdgeExtensionEffectUseShader() {
+    return com::android::graphics::libgui::flags::edge_extension_shader();
+}
+
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setEdgeExtensionEffect(
         const sp<SurfaceControl>& sc, const gui::EdgeExtensionParameters& effect) {
     layer_state_t* s = getLayerState(sc);
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index a10283b..95574ee 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -339,6 +339,8 @@
     static std::optional<aidl::android::hardware::graphics::common::DisplayDecorationSupport>
     getDisplayDecorationSupport(const sp<IBinder>& displayToken);
 
+    static bool flagEdgeExtensionEffectUseShader();
+
     // ------------------------------------------------------------------------
     // surface creation / destruction
 
diff --git a/libs/gui/libgui_flags.aconfig b/libs/gui/libgui_flags.aconfig
index 2d70052..74d806e 100644
--- a/libs/gui/libgui_flags.aconfig
+++ b/libs/gui/libgui_flags.aconfig
@@ -43,3 +43,11 @@
   bug: "340933794"
   is_fixed_read_only: true
 } # wb_platform_api_improvements
+
+flag {
+  name: "edge_extension_shader"
+  namespace: "windowing_frontend"
+  description: "Enable edge extension via shader"
+  bug: "322036393"
+  is_fixed_read_only: true
+} # edge_extension_shader