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// Copyright 2014 The Chromium Authors
// 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_MANAGER_IMPL_H_
#define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_IMPL_H_
#include <map>
#include <utility>
#include "gpu/command_buffer/common/constants.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "gpu/command_buffer/service/mailbox_manager.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
namespace gles2 {
// Manages resources scoped beyond the context or context group level.
class GPU_GLES2_EXPORT MailboxManagerImpl : public MailboxManager {
public:
MailboxManagerImpl();
MailboxManagerImpl(const MailboxManagerImpl&) = delete;
MailboxManagerImpl& operator=(const MailboxManagerImpl&) = delete;
~MailboxManagerImpl() override;
// MailboxManager implementation:
TextureBase* ConsumeTexture(const Mailbox& mailbox) override;
void ProduceTexture(const Mailbox& mailbox, TextureBase* texture) override;
void TextureDeleted(TextureBase* texture) override;
private:
// This is a bidirectional map between mailbox and textures. We can have
// multiple mailboxes per texture, but one texture per mailbox. We keep an
// iterator in the MailboxToTextureMap to be able to manage changes to
// the TextureToMailboxMap efficiently.
typedef std::multimap<TextureBase*, Mailbox> TextureToMailboxMap;
typedef std::map<Mailbox, TextureToMailboxMap::iterator>
MailboxToTextureMap;
MailboxToTextureMap mailbox_to_textures_;
TextureToMailboxMap textures_to_mailboxes_;
};
} // namespage gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_IMPL_H_
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