gpu/command_buffer/service/mailbox_manager_impl.h

   1 // Copyright 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_MANAGER_IMPL_H_
   6 #define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_IMPL_H_
   7
   8 #include <map>
   9 #include <utility>
  10
  11 #include "base/memory/linked_ptr.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "gpu/command_buffer/common/constants.h"
  14 #include "gpu/command_buffer/common/mailbox.h"
  15 #include "gpu/command_buffer/service/mailbox_manager.h"
  16 #include "gpu/gpu_export.h"
  17
  18 namespace gpu {
  19 namespace gles2 {
  20
  21 class Texture;
  22 class TextureManager;
  23
  24 // Manages resources scoped beyond the context or context group level.
  25 class GPU_EXPORT MailboxManagerImpl : public MailboxManager {
  26  public:
  27   MailboxManagerImpl();
  28
  29   // MailboxManager implementation:
  30   Texture* ConsumeTexture(const Mailbox& mailbox) override;
  31   void ProduceTexture(const Mailbox& mailbox, Texture* texture) override;
  32   bool UsesSync() override;
  33   void PushTextureUpdates(uint32 sync_point) override {}
  34   void PullTextureUpdates(uint32 sync_point) override {}
  35   void TextureDeleted(Texture* texture) override;
  36
  37  protected:
  38   ~MailboxManagerImpl() override;
  39
  40  private:
  41   friend class base::RefCounted<MailboxManager>;
  42
  43   void InsertTexture(const Mailbox& mailbox, Texture* texture);
  44
  45   // This is a bidirectional map between mailbox and textures. We can have
  46   // multiple mailboxes per texture, but one texture per mailbox. We keep an
  47   // iterator in the MailboxToTextureMap to be able to manage changes to
  48   // the TextureToMailboxMap efficiently.
  49   typedef std::multimap<Texture*, Mailbox> TextureToMailboxMap;
  50   typedef std::map<Mailbox, TextureToMailboxMap::iterator>
  51       MailboxToTextureMap;
  52
  53   MailboxToTextureMap mailbox_to_textures_;
  54   TextureToMailboxMap textures_to_mailboxes_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(MailboxManagerImpl);
  57 };
  58
  59 }  // namespage gles2
  60 }  // namespace gpu
  61
  62 #endif  // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_IMPL_H_
  63