| // Copyright (c) 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. |
| |
| #ifndef GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| #define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| |
| #include "gpu/command_buffer/common/mailbox.h" |
| |
| #include <map> |
| #include <set> |
| |
| #include "base/memory/linked_ptr.h" |
| #include "base/synchronization/lock.h" |
| #include "gpu/command_buffer/service/texture_definition.h" |
| #include "gpu/gpu_export.h" |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| class MailboxManager; |
| class Texture; |
| |
| // A thread-safe proxy that can be used to emulate texture sharing across |
| // share-groups. |
| class MailboxSynchronizer { |
| public: |
| ~MailboxSynchronizer(); |
| |
| GPU_EXPORT static bool Initialize(); |
| GPU_EXPORT static void Terminate(); |
| static MailboxSynchronizer* GetInstance(); |
| |
| // Create a texture from a globally visible mailbox. |
| Texture* CreateTextureFromMailbox(unsigned target, const Mailbox& mailbox); |
| |
| void PushTextureUpdates(MailboxManager* manager); |
| void PullTextureUpdates(MailboxManager* manager); |
| |
| void TextureDeleted(Texture* texture); |
| |
| private: |
| MailboxSynchronizer(); |
| |
| struct TargetName { |
| TargetName(unsigned target, const Mailbox& mailbox); |
| bool operator<(const TargetName& rhs) const { |
| return memcmp(this, &rhs, sizeof(rhs)) < 0; |
| } |
| bool operator!=(const TargetName& rhs) const { |
| return memcmp(this, &rhs, sizeof(rhs)) != 0; |
| } |
| bool operator==(const TargetName& rhs) const { |
| return !operator!=(rhs); |
| } |
| unsigned target; |
| Mailbox mailbox; |
| }; |
| |
| base::Lock lock_; |
| |
| struct TextureGroup { |
| explicit TextureGroup(const TextureDefinition& definition); |
| ~TextureGroup(); |
| |
| TextureDefinition definition; |
| std::set<TargetName> mailboxes; |
| private: |
| DISALLOW_COPY_AND_ASSIGN(TextureGroup); |
| }; |
| |
| struct TextureVersion { |
| explicit TextureVersion(linked_ptr<TextureGroup> group); |
| ~TextureVersion(); |
| |
| unsigned int version; |
| linked_ptr<TextureGroup> group; |
| }; |
| typedef std::map<Texture*, TextureVersion> TextureMap; |
| TextureMap textures_; |
| |
| linked_ptr<TextureGroup> GetGroupForMailboxLocked( |
| const TargetName& target_name); |
| void ReassociateMailboxLocked( |
| const TargetName& target_name, |
| TextureGroup* group); |
| |
| DISALLOW_COPY_AND_ASSIGN(MailboxSynchronizer); |
| }; |
| |
| } // namespage gles2 |
| } // namespace gpu |
| |
| #endif // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| |