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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_CLIENT_SHARE_GROUP_H_
#define GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_
#include <GLES2/gl2.h>
#include "base/memory/scoped_ptr.h"
#include "gles2_impl_export.h"
#include "gpu/command_buffer/client/ref_counted.h"
#include "gpu/command_buffer/common/gles2_cmd_format.h"
namespace gpu {
namespace gles2 {
class GLES2Implementation;
class GLES2ImplementationTest;
class ProgramInfoManager;
typedef void (GLES2Implementation::*DeleteFn)(GLsizei n, const GLuint* ids);
class ShareGroupContextData {
public:
struct IdHandlerData {
IdHandlerData();
~IdHandlerData();
std::vector<GLuint> freed_ids_;
uint32 flush_generation_;
};
IdHandlerData* id_handler_data(int namespace_id) {
return &id_handler_data_[namespace_id];
}
private:
IdHandlerData id_handler_data_[id_namespaces::kNumIdNamespaces];
};
// Base class for IdHandlers
class IdHandlerInterface {
public:
IdHandlerInterface() { }
virtual ~IdHandlerInterface() { }
// Makes some ids at or above id_offset.
virtual void MakeIds(
GLES2Implementation* gl_impl,
GLuint id_offset, GLsizei n, GLuint* ids) = 0;
// Frees some ids.
virtual bool FreeIds(
GLES2Implementation* gl_impl, GLsizei n, const GLuint* ids,
DeleteFn delete_fn) = 0;
// Marks an id as used for glBind functions. id = 0 does nothing.
virtual bool MarkAsUsedForBind(GLuint id) = 0;
// Called when a context in the share group is destructed.
virtual void FreeContext(GLES2Implementation* gl_impl) = 0;
};
// ShareGroup manages shared resources for contexts that are sharing resources.
class GLES2_IMPL_EXPORT ShareGroup
: public gpu::RefCountedThreadSafe<ShareGroup> {
public:
ShareGroup(bool bind_generates_resource);
bool bind_generates_resource() const {
return bind_generates_resource_;
}
bool Initialize();
IdHandlerInterface* GetIdHandler(int namespace_id) const {
return id_handlers_[namespace_id].get();
}
ProgramInfoManager* program_info_manager() {
return program_info_manager_.get();
}
void FreeContext(GLES2Implementation* gl_impl) {
for (int i = 0; i < id_namespaces::kNumIdNamespaces; ++i) {
id_handlers_[i]->FreeContext(gl_impl);
}
}
private:
friend class gpu::RefCountedThreadSafe<ShareGroup>;
friend class gpu::gles2::GLES2ImplementationTest;
~ShareGroup();
// Install a new program info manager. Used for testing only;
void set_program_info_manager(ProgramInfoManager* manager);
scoped_ptr<IdHandlerInterface> id_handlers_[id_namespaces::kNumIdNamespaces];
scoped_ptr<ProgramInfoManager> program_info_manager_;
bool bind_generates_resource_;
DISALLOW_COPY_AND_ASSIGN(ShareGroup);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_
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