ANGLE In Use Dialog Box

When ANGLE is enabled for an app, show a dialog box to the user to
indicate that ANGLE is in use.   This is useful because there are
not (or at least shouldn't be) any visual indication that a different
OpenGL driver is in use.

Bug: 120489005
Test: atest CtsAngleIntegrationHostTestCases
Test: Load an app with ANGLE enabled and verify dialog box is shown.
Test: Load an app without ANGLE and verify dialog box is not shown.
Change-Id: I5e87ec96582d43666cfcca2266b46ce98b859a32
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 0eadd1d..5f778da 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -65,6 +65,7 @@
 import android.os.BadParcelableException;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.GraphicsEnvironment;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Looper;
@@ -7708,6 +7709,8 @@
             }
         }
 
+        GraphicsEnvironment.getInstance().showAngleInUseDialogBox(this);
+
         mActivityTransitionState.enterReady(this);
         dispatchActivityPostStarted();
     }
diff --git a/core/java/android/os/GraphicsEnvironment.java b/core/java/android/os/GraphicsEnvironment.java
index 269c781..8813e40 100644
--- a/core/java/android/os/GraphicsEnvironment.java
+++ b/core/java/android/os/GraphicsEnvironment.java
@@ -16,6 +16,7 @@
 
 package android.os;
 
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
@@ -30,6 +31,7 @@
 import android.provider.Settings;
 import android.util.Base64;
 import android.util.Log;
+import android.widget.Toast;
 
 import com.android.framework.protobuf.InvalidProtocolBufferException;
 
@@ -222,9 +224,17 @@
     }
 
 
-    private static List<String> getGlobalSettingsString(Bundle bundle, String globalSetting) {
-        List<String> valueList = null;
-        final String settingsValue = bundle.getString(globalSetting);
+    private static List<String> getGlobalSettingsString(ContentResolver contentResolver,
+                                                        Bundle bundle,
+                                                        String globalSetting) {
+        final List<String> valueList;
+        final String settingsValue;
+
+        if (bundle != null) {
+            settingsValue = bundle.getString(globalSetting);
+        } else {
+            settingsValue = Settings.Global.getString(contentResolver, globalSetting);
+        }
 
         if (settingsValue != null) {
             valueList = new ArrayList<>(Arrays.asList(settingsValue.split(",")));
@@ -246,17 +256,27 @@
         return -1;
     }
 
-    private static String getDriverForPkg(Bundle bundle, String packageName) {
-        final String allUseAngle =
-                bundle.getString(Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_ALL_ANGLE);
+    private static String getDriverForPkg(Context context, Bundle bundle, String packageName) {
+        final String allUseAngle;
+        if (bundle != null) {
+            allUseAngle =
+                    bundle.getString(Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_ALL_ANGLE);
+        } else {
+            ContentResolver contentResolver = context.getContentResolver();
+            allUseAngle = Settings.Global.getString(contentResolver,
+                    Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_ALL_ANGLE);
+        }
         if ((allUseAngle != null) && allUseAngle.equals("1")) {
             return sDriverMap.get(OpenGlDriverChoice.ANGLE);
         }
 
-        final List<String> globalSettingsDriverPkgs = getGlobalSettingsString(
-                bundle, Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_SELECTION_PKGS);
-        final List<String> globalSettingsDriverValues = getGlobalSettingsString(
-                bundle, Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_SELECTION_VALUES);
+        final ContentResolver contentResolver = context.getContentResolver();
+        final List<String> globalSettingsDriverPkgs =
+                getGlobalSettingsString(contentResolver, bundle,
+                        Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_SELECTION_PKGS);
+        final List<String> globalSettingsDriverValues =
+                getGlobalSettingsString(contentResolver, bundle,
+                        Settings.Global.GLOBAL_SETTINGS_ANGLE_GL_DRIVER_SELECTION_VALUES);
 
         // Make sure we have a good package name
         if ((packageName == null) || (packageName.isEmpty())) {
@@ -308,7 +328,7 @@
      * True: Temporary rules file was loaded.
      * False: Temporary rules file was *not* loaded.
      */
-    private boolean setupAngleWithTempRulesFile(Context context,
+    private static boolean setupAngleWithTempRulesFile(Context context,
                                                 String packageName,
                                                 String paths,
                                                 String devOptIn) {
@@ -372,7 +392,7 @@
      * True: APK rules file was loaded.
      * False: APK rules file was *not* loaded.
      */
-    private boolean setupAngleRulesApk(String anglePkgName,
+    private static boolean setupAngleRulesApk(String anglePkgName,
             ApplicationInfo angleInfo,
             PackageManager pm,
             String packageName,
@@ -405,23 +425,32 @@
     /**
      * Pull ANGLE whitelist from GlobalSettings and compare against current package
      */
-    private boolean checkAngleWhitelist(Bundle bundle, String packageName) {
+    private static boolean checkAngleWhitelist(Context context, Bundle bundle, String packageName) {
+        final ContentResolver contentResolver = context.getContentResolver();
         final List<String> angleWhitelist =
-                getGlobalSettingsString(bundle, Settings.Global.GLOBAL_SETTINGS_ANGLE_WHITELIST);
+                getGlobalSettingsString(contentResolver, bundle,
+                    Settings.Global.GLOBAL_SETTINGS_ANGLE_WHITELIST);
 
         return angleWhitelist.contains(packageName);
     }
 
     /**
      * Pass ANGLE details down to trigger enable logic
+     *
+     * @param context
+     * @param bundle
+     * @param packageName
+     * @return true: ANGLE setup successfully
+     *         false: ANGLE not setup (not on whitelist, ANGLE not present, etc.)
      */
-    public void setupAngle(Context context, Bundle bundle, PackageManager pm, String packageName) {
+    public boolean setupAngle(Context context, Bundle bundle, PackageManager pm,
+            String packageName) {
         if (packageName.isEmpty()) {
             Log.v(TAG, "No package name available yet, skipping ANGLE setup");
-            return;
+            return false;
         }
 
-        final String devOptIn = getDriverForPkg(bundle, packageName);
+        final String devOptIn = getDriverForPkg(context, bundle, packageName);
         if (DEBUG) {
             Log.v(TAG, "ANGLE Developer option for '" + packageName + "' "
                     + "set to: '" + devOptIn + "'");
@@ -439,11 +468,11 @@
         // load a driver, GraphicsEnv::shouldUseAngle() has seen the package name before
         // and can confidently answer yes/no based on the previously set developer
         // option value.
-        final boolean whitelisted = checkAngleWhitelist(bundle, packageName);
+        final boolean whitelisted = checkAngleWhitelist(context, bundle, packageName);
         final boolean defaulted = devOptIn.equals(sDriverMap.get(OpenGlDriverChoice.DEFAULT));
         final boolean rulesCheck = (whitelisted || !defaulted);
         if (!rulesCheck) {
-            return;
+            return false;
         }
 
         if (whitelisted) {
@@ -456,7 +485,7 @@
         final String anglePkgName = getAnglePackageName(pm);
         if (anglePkgName.isEmpty()) {
             Log.e(TAG, "Failed to find ANGLE package.");
-            return;
+            return false;
         }
 
         final ApplicationInfo angleInfo;
@@ -464,7 +493,7 @@
             angleInfo = pm.getApplicationInfo(anglePkgName, PackageManager.MATCH_SYSTEM_ONLY);
         } catch (PackageManager.NameNotFoundException e) {
             Log.w(TAG, "ANGLE package '" + anglePkgName + "' not installed");
-            return;
+            return false;
         }
 
         final String abi = chooseAbi(angleInfo);
@@ -480,12 +509,62 @@
 
         if (setupAngleWithTempRulesFile(context, packageName, paths, devOptIn)) {
             // We setup ANGLE with a temp rules file, so we're done here.
-            return;
+            return true;
         }
 
         if (setupAngleRulesApk(anglePkgName, angleInfo, pm, packageName, paths, devOptIn)) {
             // We setup ANGLE with rules from the APK, so we're done here.
-            return;
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Determine if the "ANGLE In Use" dialog box should be shown.
+     */
+    private boolean shouldShowAngleInUseDialogBox(Context context) {
+        try {
+            ContentResolver contentResolver = context.getContentResolver();
+            final int showDialogBox = Settings.Global.getInt(contentResolver,
+                    Settings.Global.GLOBAL_SETTINGS_SHOW_ANGLE_IN_USE_DIALOG_BOX);
+
+            return (showDialogBox == 1);
+        } catch (Settings.SettingNotFoundException | SecurityException e) {
+            // Do nothing and move on
+        }
+
+        // No setting, so assume false
+        return false;
+    }
+
+    /**
+     * Determine if ANGLE should be used.
+     */
+    private boolean shouldUseAngle(Context context, String packageName) {
+        // Need to make sure we are evaluating ANGLE usage for the correct circumstances
+        if (!setupAngle(context, null, context.getPackageManager(), packageName)) {
+            Log.v(TAG, "Package '" + packageName + "' should use not ANGLE");
+            return false;
+        }
+
+        final boolean useAngle = getShouldUseAngle(packageName);
+        Log.v(TAG, "Package '" + packageName + "' should use ANGLE = '" + useAngle + "'");
+
+        return useAngle;
+    }
+
+    /**
+     * Show the ANGLE in Use Dialog Box
+     * @param context
+     */
+    public void showAngleInUseDialogBox(Context context) {
+        final String packageName = context.getPackageName();
+
+        if (shouldShowAngleInUseDialogBox(context) && shouldUseAngle(context, packageName)) {
+            final String toastMsg = packageName + " is using ANGLE";
+            final Toast toast = Toast.makeText(context, toastMsg, Toast.LENGTH_LONG);
+            toast.show();
         }
     }
 
@@ -541,19 +620,19 @@
 
         if (gameDriverAllApps != 1) {
             // GAME_DRIVER_OPT_OUT_APPS has higher priority than GAME_DRIVER_OPT_IN_APPS
-            if (getGlobalSettingsString(coreSettings, Settings.Global.GAME_DRIVER_OPT_OUT_APPS)
-                            .contains(packageName)) {
+            if (getGlobalSettingsString(null, coreSettings,
+                    Settings.Global.GAME_DRIVER_OPT_OUT_APPS).contains(packageName)) {
                 if (DEBUG) {
                     Log.w(TAG, packageName + " opts out from Game Driver.");
                 }
                 return false;
             }
             final boolean isOptIn =
-                    getGlobalSettingsString(coreSettings, Settings.Global.GAME_DRIVER_OPT_IN_APPS)
-                            .contains(packageName);
+                    getGlobalSettingsString(null, coreSettings,
+                            Settings.Global.GAME_DRIVER_OPT_IN_APPS).contains(packageName);
             if (!isOptIn
-                    && !getGlobalSettingsString(coreSettings, Settings.Global.GAME_DRIVER_WHITELIST)
-                                .contains(packageName)) {
+                    && !getGlobalSettingsString(null, coreSettings,
+                    Settings.Global.GAME_DRIVER_WHITELIST).contains(packageName)) {
                 if (DEBUG) {
                     Log.w(TAG, packageName + " is not on the whitelist.");
                 }
@@ -660,4 +739,5 @@
             long driverVersionCode, String appPackageName);
     private static native void setAngleInfo(String path, String appPackage, String devOptIn,
             FileDescriptor rulesFd, long rulesOffset, long rulesLength);
+    private static native boolean getShouldUseAngle(String packageName);
 }
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index c4019ad..2b638f6 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -12318,6 +12318,14 @@
                 "angle_whitelist";
 
         /**
+         * Show the "ANGLE In Use" dialog box to the user when ANGLE is the OpenGL driver.
+         * The value is a boolean (1 or 0).
+         * @hide
+         */
+        public static final String GLOBAL_SETTINGS_SHOW_ANGLE_IN_USE_DIALOG_BOX =
+                "show_angle_in_use_dialog_box";
+
+        /**
          * Game Driver global preference for all Apps.
          * 0 = Default
          * 1 = All Apps use Game Driver
diff --git a/core/jni/android_os_GraphicsEnvironment.cpp b/core/jni/android_os_GraphicsEnvironment.cpp
index e2e66ce..95f99b7 100644
--- a/core/jni/android_os_GraphicsEnvironment.cpp
+++ b/core/jni/android_os_GraphicsEnvironment.cpp
@@ -55,6 +55,11 @@
             devOptInChars.c_str(), rulesFd_native, rulesOffset, rulesLength);
 }
 
+bool shouldUseAngle_native(JNIEnv* env, jobject clazz, jstring appName) {
+    ScopedUtfChars appNameChars(env, appName);
+    return android::GraphicsEnv::getInstance().shouldUseAngle(appNameChars.c_str());
+}
+
 void setLayerPaths_native(JNIEnv* env, jobject clazz, jobject classLoader, jstring layerPaths) {
     android::NativeLoaderNamespace* appNamespace = android::FindNativeLoaderNamespaceByClassLoader(
         env, classLoader);
@@ -81,6 +86,7 @@
     { "setDriverPath", "(Ljava/lang/String;)V", reinterpret_cast<void*>(setDriverPath) },
     { "setGpuStats", "(Ljava/lang/String;Ljava/lang/String;JLjava/lang/String;)V", reinterpret_cast<void*>(setGpuStats_native) },
     { "setAngleInfo", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/io/FileDescriptor;JJ)V", reinterpret_cast<void*>(setAngleInfo_native) },
+    { "getShouldUseAngle", "(Ljava/lang/String;)Z", reinterpret_cast<void*>(shouldUseAngle_native) },
     { "setLayerPaths", "(Ljava/lang/ClassLoader;Ljava/lang/String;)V", reinterpret_cast<void*>(setLayerPaths_native) },
     { "setDebugLayers", "(Ljava/lang/String;)V", reinterpret_cast<void*>(setDebugLayers_native) },
     { "setDebugLayersGLES", "(Ljava/lang/String;)V", reinterpret_cast<void*>(setDebugLayersGLES_native) },
diff --git a/core/proto/android/providers/settings/global.proto b/core/proto/android/providers/settings/global.proto
index 39d61a1..c9957f3 100644
--- a/core/proto/android/providers/settings/global.proto
+++ b/core/proto/android/providers/settings/global.proto
@@ -451,6 +451,8 @@
         // Game Driver - List of blacklists, each blacklist is a blacklist for
         // a specific Game Driver version
         optional SettingProto game_driver_blacklists = 14;
+        // ANGLE - Show a dialog box when ANGLE is selected for the currently running PKG
+        optional SettingProto show_angle_in_use_dialog = 15;
     }
     optional Gpu gpu = 59;
 
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index b919553..4d2f005 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -494,6 +494,7 @@
                     Settings.Global.GAME_DRIVER_BLACKLISTS,
                     Settings.Global.GAME_DRIVER_BLACKLIST,
                     Settings.Global.GAME_DRIVER_WHITELIST,
+                    Settings.Global.GLOBAL_SETTINGS_SHOW_ANGLE_IN_USE_DIALOG_BOX,
                     Settings.Global.GPU_DEBUG_LAYER_APP,
                     Settings.Global.ENABLE_GNSS_RAW_MEAS_FULL_TRACKING,
                     Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_PERSISTENT,