content/browser/compositor/owned_mailbox.cc

   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.
   4
   5 #include "content/browser/compositor/owned_mailbox.h"
   6
   7 #include "base/logging.h"
   8 #include "content/browser/compositor/image_transport_factory.h"
   9 #include "content/common/gpu/client/gl_helper.h"
  10
  11 namespace content {
  12
  13 OwnedMailbox::OwnedMailbox(GLHelper* gl_helper)
  14     : texture_id_(0), gl_helper_(gl_helper) {
  15   texture_id_ = gl_helper_->CreateTexture();
  16   mailbox_holder_ = gl_helper_->ProduceMailboxHolderFromTexture(texture_id_);
  17   ImageTransportFactory::GetInstance()->AddObserver(this);
  18 }
  19
  20 OwnedMailbox::~OwnedMailbox() {
  21   if (gl_helper_)
  22     Destroy();
  23 }
  24
  25 void OwnedMailbox::UpdateSyncPoint(uint32 sync_point) {
  26   if (sync_point)
  27     mailbox_holder_.sync_point = sync_point;
  28 }
  29
  30 void OwnedMailbox::Destroy() {
  31   ImageTransportFactory::GetInstance()->RemoveObserver(this);
  32   gl_helper_->WaitSyncPoint(mailbox_holder_.sync_point);
  33   gl_helper_->DeleteTexture(texture_id_);
  34   texture_id_ = 0;
  35   mailbox_holder_ = gpu::MailboxHolder();
  36   gl_helper_ = NULL;
  37 }
  38
  39 void OwnedMailbox::OnLostResources() {
  40   if (gl_helper_)
  41     Destroy();
  42 }
  43
  44 }  // namespace content