Improve workaround for partial texture updates on Android

* java/AndroidManifest.xml.in:
* java/org/gnu/emacs/EmacsDialog.java (toAlertDialog): Don't
change hardware acceleration state.
* java/org/gnu/emacs/EmacsNative.java (notifyPixelsChanged): New
function.
* java/org/gnu/emacs/EmacsSurfaceView.java (EmacsSurfaceView):
New field `bitmapChanged'.
(copyToFrontBuffer): Signal that the bitmap has changed.
(onDraw): If the bitmap has changed, increment the generation
ID.
* src/android.c (JNICALL): Implement new function.

1 files changed, 0 insertions, 5 deletions

diff --git a/java/AndroidManifest.xml.in b/java/AndroidManifest.xml.in
index f2aede7369c..e79fb4e46e7 100644
--- a/java/AndroidManifest.xml.in
+++ b/java/AndroidManifest.xml.in
@@ -77,14 +77,10 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
                @ANDROID_SHARED_USER_ID@
                android:extractNativeLibs="true">
 
-    <!-- See EmacsSurfaceView.onDraw for why hardware acceleration is
-         disabled.  -->
-
     <activity android:name="org.gnu.emacs.EmacsActivity"
               android:launchMode="singleInstance"
               android:windowSoftInputMode="adjustResize"
               android:exported="true"
-              android:hardwareAccelerated="false"
               android:configChanges="orientation|screenSize|screenLayout|keyboardHidden">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
@@ -177,7 +173,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
     <activity android:name="org.gnu.emacs.EmacsMultitaskActivity"
               android:windowSoftInputMode="adjustResize"
               android:exported="true"
-              android:hardwareAccelerated="false"
               android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"/>
 
     <activity android:autoRemoveFromRecents="true"