1 files changed, 44 insertions, 0 deletions
diff --git a/jni/jni_egl_fence.cpp b/jni/jni_egl_fence.cpp
new file mode 100644
index 000000000..8d557df31
--- /dev/null
+++ b/jni/jni_egl_fence.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2012 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
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "jni_egl_fence.h"
+
+#include <cutils/log.h>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+void
+Java_com_android_gallery3d_photoeditor_FilterStack_nativeEglSetFenceAndWait(JNIEnv* env,
+                                                                          jobject thiz) {
+  EGLDisplay display = eglGetCurrentDisplay();
+
+  // Create a egl fence and wait for egl to return it.
+  // Additional reference on egl fence sync can be found in:
+  // http://www.khronos.org/registry/vg/extensions/KHR/EGL_KHR_fence_sync.txt
+  EGLSyncKHR fence = eglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL);
+  if (fence == EGL_NO_SYNC_KHR) {
+    return;
+  }
+
+  EGLint result = eglClientWaitSyncKHR(display,
+                                       fence,
+                                       EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
+                                       EGL_FOREVER_KHR);
+  if (result == EGL_FALSE) {
+    ALOGE("EGL FENCE: error waiting for fence: %#x", eglGetError());
+  }
+  eglDestroySyncKHR(display, fence);
+}