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| 1 // Copyright (c) 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 #ifndef GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| 6 #define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| 7 |
| 8 #include "gpu/command_buffer/common/mailbox.h" |
| 9 |
| 10 #include <map> |
| 11 #include <set> |
| 12 |
| 13 #include "base/memory/linked_ptr.h" |
| 14 #include "base/synchronization/lock.h" |
| 15 #include "gpu/command_buffer/service/texture_definition.h" |
| 16 #include "gpu/gpu_export.h" |
| 17 |
| 18 namespace gpu { |
| 19 namespace gles2 { |
| 20 |
| 21 class MailboxManager; |
| 22 class Texture; |
| 23 |
| 24 // A thread-safe proxy that can be used to emulate texture sharing across |
| 25 // share-groups. |
| 26 class MailboxSynchronizer { |
| 27 public: |
| 28 ~MailboxSynchronizer(); |
| 29 |
| 30 GPU_EXPORT static bool Initialize(); |
| 31 GPU_EXPORT static void Terminate(); |
| 32 static MailboxSynchronizer* GetInstance(); |
| 33 |
| 34 // Create a texture from a globally visible mailbox. |
| 35 Texture* CreateTextureFromMailbox(unsigned target, const Mailbox& mailbox); |
| 36 |
| 37 void PushTextureUpdates(MailboxManager* manager); |
| 38 void PullTextureUpdates(MailboxManager* manager); |
| 39 |
| 40 void TextureDeleted(Texture* texture); |
| 41 |
| 42 private: |
| 43 MailboxSynchronizer(); |
| 44 |
| 45 struct TargetName { |
| 46 TargetName(unsigned target, const Mailbox& mailbox); |
| 47 bool operator<(const TargetName& rhs) const { |
| 48 return memcmp(this, &rhs, sizeof(rhs)) < 0; |
| 49 } |
| 50 bool operator!=(const TargetName& rhs) const { |
| 51 return memcmp(this, &rhs, sizeof(rhs)) != 0; |
| 52 } |
| 53 bool operator==(const TargetName& rhs) const { |
| 54 return !operator!=(rhs); |
| 55 } |
| 56 unsigned target; |
| 57 Mailbox mailbox; |
| 58 }; |
| 59 |
| 60 base::Lock lock_; |
| 61 |
| 62 struct TextureGroup { |
| 63 explicit TextureGroup(const TextureDefinition& definition); |
| 64 ~TextureGroup(); |
| 65 |
| 66 TextureDefinition definition; |
| 67 std::set<TargetName> mailboxes; |
| 68 private: |
| 69 DISALLOW_COPY_AND_ASSIGN(TextureGroup); |
| 70 }; |
| 71 |
| 72 struct TextureVersion { |
| 73 explicit TextureVersion(linked_ptr<TextureGroup> group); |
| 74 ~TextureVersion(); |
| 75 |
| 76 unsigned int version; |
| 77 linked_ptr<TextureGroup> group; |
| 78 }; |
| 79 typedef std::map<Texture*, TextureVersion> TextureMap; |
| 80 TextureMap textures_; |
| 81 |
| 82 linked_ptr<TextureGroup> GetGroupForMailboxLocked( |
| 83 const TargetName& target_name); |
| 84 void ReassociateMailboxLocked( |
| 85 const TargetName& target_name, |
| 86 TextureGroup* group); |
| 87 |
| 88 DISALLOW_COPY_AND_ASSIGN(MailboxSynchronizer); |
| 89 }; |
| 90 |
| 91 } // namespage gles2 |
| 92 } // namespace gpu |
| 93 |
| 94 #endif // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_SYNCHRONIZER_H_ |
| 95 |
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