| // 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 <stddef.h> |
| |
| #include <algorithm> |
| |
| #include "gpu/command_buffer/service/texture_base.h" |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| MailboxManagerImpl::MailboxManagerImpl() = default; |
| |
| MailboxManagerImpl::~MailboxManagerImpl() { |
| DCHECK(mailbox_to_textures_.empty()); |
| DCHECK(textures_to_mailboxes_.empty()); |
| } |
| |
| bool MailboxManagerImpl::UsesSync() { |
| return false; |
| } |
| |
| TextureBase* MailboxManagerImpl::ConsumeTexture(const Mailbox& mailbox) { |
| MailboxToTextureMap::iterator it = |
| mailbox_to_textures_.find(mailbox); |
| if (it != mailbox_to_textures_.end()) |
| return it->second->first; |
| |
| return nullptr; |
| } |
| |
| void MailboxManagerImpl::ProduceTexture(const Mailbox& mailbox, |
| TextureBase* texture) { |
| DCHECK(texture); |
| MailboxToTextureMap::iterator it = mailbox_to_textures_.find(mailbox); |
| if (it != mailbox_to_textures_.end()) { |
| DLOG(ERROR) << "Ignored attempt to reassign a mailbox"; |
| return; |
| } |
| 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(TextureBase* 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 |