VulkanViewer on Android

platform_tools/android/third_party/native_app_glue/android_native_app_glue.c

 /*
  * Copyright (C) 2010 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
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 static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) {
     LOGV("InputQueueCreated: %p -- %p\n", activity, queue);
     android_app_set_input((struct android_app*)activity->instance, queue);
 }
 
 static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) {
     LOGV("InputQueueDestroyed: %p -- %p\n", activity, queue);
     android_app_set_input((struct android_app*)activity->instance, NULL);
 }
 
+static void onContentRectChanged(ANativeActivity* activity, const ARect* rect) {
+        struct android_app* android_app = (struct android_app*)activity->instance;
+    LOGV("OnContentRectChanged: %p\n", activity);
+    android_app->contentRect = *rect;
+    android_app_write_cmd(android_app, APP_CMD_CONTENT_RECT_CHANGED);
+}
+
 void ANativeActivity_onCreate(ANativeActivity* activity,
         void* savedState, size_t savedStateSize) {
     LOGV("Creating: %p\n", activity);
     activity->callbacks->onDestroy = onDestroy;
     activity->callbacks->onStart = onStart;
     activity->callbacks->onResume = onResume;
     activity->callbacks->onSaveInstanceState = onSaveInstanceState;
     activity->callbacks->onPause = onPause;
     activity->callbacks->onStop = onStop;
     activity->callbacks->onConfigurationChanged = onConfigurationChanged;
     activity->callbacks->onLowMemory = onLowMemory;
     activity->callbacks->onWindowFocusChanged = onWindowFocusChanged;
     activity->callbacks->onNativeWindowCreated = onNativeWindowCreated;
     activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed;
     activity->callbacks->onInputQueueCreated = onInputQueueCreated;
     activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed;
+    activity->callbacks->onContentRectChanged = onContentRectChanged;
 
     activity->instance = android_app_create(activity, savedState, savedStateSize);
 }