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// Copyright (c) 2012 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_VERTEX_ARRAY_MANAGER_H_
#define GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_
#include "base/basictypes.h"
#include "base/containers/hash_tables.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "gpu/command_buffer/service/gl_utils.h"
#include "gpu/gpu_export.h"
namespace gpu {
namespace gles2 {
class VertexAttribManager;
// This class keeps track of the vertex arrays and their sizes so we can do
// bounds checking.
class GPU_EXPORT VertexArrayManager {
public:
VertexArrayManager();
~VertexArrayManager();
// Must call before destruction.
void Destroy(bool have_context);
// Creates a VertexAttribManager and if client_visible,
// maps it to the client_id.
scoped_refptr<VertexAttribManager> CreateVertexAttribManager(
GLuint client_id,
GLuint service_id,
uint32 num_vertex_attribs,
bool client_visible);
// Gets the vertex attrib manager for the given vertex array.
VertexAttribManager* GetVertexAttribManager(GLuint client_id);
// Removes the vertex attrib manager for the given vertex array.
void RemoveVertexAttribManager(GLuint client_id);
// Gets a client id for a given service id.
bool GetClientId(GLuint service_id, GLuint* client_id) const;
private:
friend class VertexAttribManager;
void StartTracking(VertexAttribManager* vertex_attrib_manager);
void StopTracking(VertexAttribManager* vertex_attrib_manager);
// Info for each vertex array in the system.
typedef base::hash_map<GLuint, scoped_refptr<VertexAttribManager> >
VertexAttribManagerMap;
VertexAttribManagerMap vertex_attrib_managers_;
// Counts the number of VertexArrayInfo allocated with 'this' as its manager.
// Allows to check no VertexArrayInfo will outlive this.
unsigned int vertex_attrib_manager_count_;
bool have_context_;
DISALLOW_COPY_AND_ASSIGN(VertexArrayManager);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_VERTEX_ARRAY_MANAGER_H_
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