content/browser/aura/owned_mailbox.cc

   1 // Copyright 2013 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/aura/owned_mailbox.h"
   6
   7 #include "base/logging.h"
   8 #include "content/browser/aura/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), sync_point_(0), gl_helper_(gl_helper) {
  15   texture_id_ = gl_helper_->CreateTexture();
  16   mailbox_ = gl_helper_->ProduceMailboxFromTexture(texture_id_, &sync_point_);
  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     sync_point_ = sync_point;
  28 }
  29
  30 void OwnedMailbox::Destroy() {
  31   ImageTransportFactory::GetInstance()->RemoveObserver(this);
  32   gl_helper_->WaitSyncPoint(sync_point_);
  33   gl_helper_->DeleteTexture(texture_id_);
  34   texture_id_ = 0;
  35   mailbox_ = gpu::Mailbox();
  36   sync_point_ = 0;
  37   gl_helper_ = NULL;
  38 }
  39
  40 void OwnedMailbox::OnLostResources() {
  41   if (gl_helper_)
  42     Destroy();
  43 }
  44
  45 }  // namespace content