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// 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.
#ifndef GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_SYNC_H_
#define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_SYNC_H_
#include <map>
#include <utility>
#include "base/lazy_instance.h"
#include "base/memory/ref_counted.h"
#include "gpu/command_buffer/common/constants.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "gpu/command_buffer/service/mailbox_manager.h"
#include "gpu/command_buffer/service/texture_definition.h"
#include "gpu/gpu_export.h"
namespace gpu {
namespace gles2 {
class Texture;
class TextureManager;
// Manages resources scoped beyond the context or context group level
// and across threads and driver level share groups by synchronizing
// texture state.
class GPU_EXPORT MailboxManagerSync : public MailboxManager {
public:
MailboxManagerSync();
// MailboxManager implementation:
Texture* ConsumeTexture(const Mailbox& mailbox) override;
void ProduceTexture(const Mailbox& mailbox, Texture* texture) override;
bool UsesSync() override;
void PushTextureUpdates(const SyncToken& token) override;
void PullTextureUpdates(const SyncToken& token) override;
void TextureDeleted(Texture* texture) override;
private:
friend class base::RefCounted<MailboxManager>;
static bool SkipTextureWorkarounds(const Texture* texture);
~MailboxManagerSync() override;
class TextureGroup : public base::RefCounted<TextureGroup> {
public:
explicit TextureGroup(const TextureDefinition& definition);
static TextureGroup* FromName(const Mailbox& name);
void AddName(const Mailbox& name);
void RemoveName(const Mailbox& name);
void AddTexture(MailboxManagerSync* manager, Texture* texture);
// Returns true if there are other textures left in the group after removal.
bool RemoveTexture(MailboxManagerSync* manager, Texture* texture);
Texture* FindTexture(MailboxManagerSync* manager);
const TextureDefinition& GetDefinition() { return definition_; }
void SetDefinition(TextureDefinition definition) {
definition_ = definition;
}
private:
friend class base::RefCounted<TextureGroup>;
~TextureGroup();
typedef std::vector<std::pair<MailboxManagerSync*, Texture*>> TextureList;
std::vector<Mailbox> names_;
TextureList textures_;
TextureDefinition definition_;
typedef std::map<Mailbox, scoped_refptr<TextureGroup>>
MailboxToGroupMap;
static base::LazyInstance<MailboxToGroupMap> mailbox_to_group_;
};
struct TextureGroupRef {
TextureGroupRef(unsigned version, TextureGroup* group);
~TextureGroupRef();
unsigned version;
scoped_refptr<TextureGroup> group;
};
static void UpdateDefinitionLocked(Texture* texture,
TextureGroupRef* group_ref);
typedef std::map<Texture*, TextureGroupRef> TextureToGroupMap;
TextureToGroupMap texture_to_group_;
DISALLOW_COPY_AND_ASSIGN(MailboxManagerSync);
};
} // namespage gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_SYNC_H_
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