integrate and link lib curl for android, add VAO support for brush draw, sync canvas with screen redraw instead of input events

android/CMakeLists.txt

@@ -46,7 +46,7 @@ target_include_directories(native-lib PRIVATE
 	../libs/tinyxml2
 	../libs/yoga
 	../libs/stb
-	../libs/curl/android/include
+	../libs/curl-android-ios/prebuilt-with-ssl/android/include
 )
 
 # add lib dependencies
@@ -54,7 +54,7 @@ target_link_libraries(
 	native-lib
 	android
 	app-glue
-	${CMAKE_SOURCE_DIR}/../libs/curl/android/armeabi-v7a/libcurl.a
+	${CMAKE_SOURCE_DIR}/../libs/curl-android-ios/prebuilt-with-ssl/android/armeabi-v7a/libcurl.a
 	EGL
 	GLESv3
 	log

android/src/main/AndroidManifest.xml

@@ -12,7 +12,8 @@
         <activity android:name="android.app.NativeActivity"
                   android:label="@string/app_name"
                   android:configChanges="orientation|keyboardHidden"
-                  android:screenOrientation="sensorLandscape">
+                  android:screenOrientation="sensorLandscape"
+                  android:noHistory="true">
             <meta-data android:name="android.app.lib_name"
                        android:value="native-lib" />
             <intent-filter>

android/src/main/cpp/main.cpp

@@ -257,6 +257,7 @@ static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
         case APP_CMD_TERM_WINDOW:
             // The window is being hidden or closed, clean it up.
             engine_term_display(engine);
+            exit(0);
             break;
         case APP_CMD_GAINED_FOCUS:
             // When our app gains focus, we start monitoring the accelerometer.
@@ -326,7 +327,7 @@ void android_main(struct android_app* state) {
     app_dummy();
 
     LOG("NETWORK TESTING...");
-    curl_test();
+    //curl_test();
     LOG("NETWORK TESTED");
 
     memset(&engine, 0, sizeof(engine));