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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_QUERY_BASE_H
#define QT3DS_RENDER_QUERY_BASE_H
#include "foundation/Qt3DSRefCounted.h"
#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSBroadcastingAllocator.h"
#include "foundation/Qt3DSAtomic.h"
#include "render/Qt3DSRenderBaseTypes.h"
#include "render/backends/Qt3DSRenderBackend.h"
namespace qt3ds {
class NVFoundationBase;
}
namespace qt3ds {
namespace render {
// forward declaration
class NVRenderContextImpl;
class NVRenderBackend;
///< Base class
class NVRenderQueryBase : public NVRefCounted
{
protected:
NVRenderContextImpl &m_Context; ///< pointer to context
NVFoundationBase &m_Foundation; ///< pointer to foundation
volatile QT3DSI32 mRefCount; ///< Using foundations' naming convention to ease implementation
NVRenderBackend *m_Backend; ///< pointer to backend
NVRenderBackend::NVRenderBackendQueryObject m_QueryHandle; ///< opaque backend handle
public:
/**
* @brief constructor
*
* @param[in] context Pointer to context
* @param[in] fnd Pointer to foundation
*
* @return No return.
*/
NVRenderQueryBase(NVRenderContextImpl &context, NVFoundationBase &fnd);
virtual ~NVRenderQueryBase();
// define refcount functions
QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE(m_Foundation)
/**
* @brief Get query type
*
* @return Return query type
*/
virtual NVRenderQueryType::Enum GetQueryType() const = 0;
/**
* @brief Get a pointer to the foundation
*
* @return pointer to foundation
*/
NVFoundationBase &GetFoundation() { return m_Foundation; }
/**
* @brief begin a query
*
* @return no return.
*/
virtual void Begin() = 0;
/**
* @brief end a query
*
* @return no return.
*/
virtual void End() = 0;
/**
* @brief Get the result of a query
*
* @param[out] params Contains result of query regarding query type
*
* @return no return.
*/
virtual void GetResult(QT3DSU32 *params) = 0;
/**
* @brief get the backend object handle
*
* @return the backend object handle.
*/
virtual NVRenderBackend::NVRenderBackendQueryObject GetQuerytHandle() const
{
return m_QueryHandle;
}
};
}
}
#endif
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