jni_egl_fence.cpp revision e5c8ed74768f16e4e82c46a31d5118788dbb3a57 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "jni_egl_fence.h"
18
19#include <cutils/log.h>
20#include <EGL/egl.h>
21#include <EGL/eglext.h>
22
23void
24Java_com_android_gallery3d_photoeditor_FilterStack_nativeEglSetFenceAndWait(JNIEnv* env,
25                                                                          jobject thiz) {
26  EGLDisplay display = eglGetCurrentDisplay();
27
28  // Create a egl fence and wait for egl to return it.
29  // Additional reference on egl fence sync can be found in:
30  // http://www.khronos.org/registry/vg/extensions/KHR/EGL_KHR_fence_sync.txt
31  EGLSyncKHR fence = eglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL);
32  if (fence == EGL_NO_SYNC_KHR) {
33    return;
34  }
35
36  EGLint result = eglClientWaitSyncKHR(display,
37                                       fence,
38                                       EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
39                                       EGL_FOREVER_KHR);
40  if (result == EGL_FALSE) {
41    ALOGE("EGL FENCE: error waiting for fence: %#x", eglGetError());
42  }
43  eglDestroySyncKHR(display, fence);
44}
45