1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/gl/gl_fence_egl.h"
7 #include "ui/gl/gl_bindings.h"
8 #include "ui/gl/gl_context.h"
12 GLFenceEGL::GLFenceEGL(bool flush
) {
13 display_
= eglGetCurrentDisplay();
14 sync_
= eglCreateSyncKHR(display_
, EGL_SYNC_FENCE_KHR
, NULL
);
15 DCHECK(sync_
!= EGL_NO_SYNC_KHR
);
19 flush_event_
= GLContext::GetCurrent()->SignalFlush();
23 bool GLFenceEGL::HasCompleted() {
25 eglGetSyncAttribKHR(display_
, sync_
, EGL_SYNC_STATUS_KHR
, &value
);
26 DCHECK(value
== EGL_SIGNALED_KHR
|| value
== EGL_UNSIGNALED_KHR
);
27 return !value
|| value
== EGL_SIGNALED_KHR
;
30 void GLFenceEGL::ClientWait() {
31 if (!flush_event_
|| flush_event_
->IsSignaled()) {
33 EGLTimeKHR time
= EGL_FOREVER_KHR
;
34 eglClientWaitSyncKHR(display_
, sync_
, flags
, time
);
36 LOG(ERROR
) << "Trying to wait for uncommitted fence. Skipping...";
40 void GLFenceEGL::ServerWait() {
41 if (!flush_event_
|| flush_event_
->IsSignaled()) {
43 eglWaitSyncKHR(display_
, sync_
, flags
);
45 LOG(ERROR
) << "Trying to wait for uncommitted fence. Skipping...";
49 GLFenceEGL::~GLFenceEGL() {
50 eglDestroySyncKHR(display_
, sync_
);