| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "gpu/command_buffer/service/mailbox_manager_impl.h" |
| |
| #include <algorithm> |
| |
| #include "gpu/command_buffer/service/texture_manager.h" |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| MailboxManagerImpl::MailboxManagerImpl() { |
| } |
| |
| MailboxManagerImpl::~MailboxManagerImpl() { |
| DCHECK(mailbox_to_textures_.empty()); |
| DCHECK(textures_to_mailboxes_.empty()); |
| } |
| |
| bool MailboxManagerImpl::UsesSync() { |
| return false; |
| } |
| |
| Texture* MailboxManagerImpl::ConsumeTexture(const Mailbox& mailbox) { |
| MailboxToTextureMap::iterator it = |
| mailbox_to_textures_.find(mailbox); |
| if (it != mailbox_to_textures_.end()) |
| return it->second->first; |
| |
| return NULL; |
| } |
| |
| void MailboxManagerImpl::ProduceTexture(const Mailbox& mailbox, |
| Texture* texture) { |
| MailboxToTextureMap::iterator it = mailbox_to_textures_.find(mailbox); |
| if (it != mailbox_to_textures_.end()) { |
| if (it->second->first == texture) |
| return; |
| TextureToMailboxMap::iterator texture_it = it->second; |
| mailbox_to_textures_.erase(it); |
| textures_to_mailboxes_.erase(texture_it); |
| } |
| InsertTexture(mailbox, texture); |
| } |
| |
| void MailboxManagerImpl::InsertTexture(const Mailbox& mailbox, |
| Texture* texture) { |
| texture->SetMailboxManager(this); |
| TextureToMailboxMap::iterator texture_it = |
| textures_to_mailboxes_.insert(std::make_pair(texture, mailbox)); |
| mailbox_to_textures_.insert(std::make_pair(mailbox, texture_it)); |
| DCHECK_EQ(mailbox_to_textures_.size(), textures_to_mailboxes_.size()); |
| } |
| |
| void MailboxManagerImpl::TextureDeleted(Texture* texture) { |
| std::pair<TextureToMailboxMap::iterator, |
| TextureToMailboxMap::iterator> range = |
| textures_to_mailboxes_.equal_range(texture); |
| for (TextureToMailboxMap::iterator it = range.first; |
| it != range.second; ++it) { |
| size_t count = mailbox_to_textures_.erase(it->second); |
| DCHECK(count == 1); |
| } |
| textures_to_mailboxes_.erase(range.first, range.second); |
| DCHECK_EQ(mailbox_to_textures_.size(), textures_to_mailboxes_.size()); |
| } |
| |
| } // namespace gles2 |
| } // namespace gpu |