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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_INDEX_BUFFER_H
#define QT3DS_RENDER_INDEX_BUFFER_H
#include "render/Qt3DSRenderDataBuffer.h"
#include "render/Qt3DSRenderDrawable.h"
namespace qt3ds {
class NVFoundationBase;
}
namespace qt3ds {
namespace render {
// forward declaration
class NVRenderContextImpl;
class NVRenderIndexBuffer : public NVRenderDataBuffer, public NVRenderDrawable
{
public:
/**
* @brief constructor
*
* @param[in] context Pointer to context
* @param[in] size Size of the buffer
* @param[in] componentType Size of the buffer
* @param[in] usage Usage of the buffer (e.g. static, dynamic...)
* @param[in] data A pointer to the buffer data that is allocated by the
* application.
*
* @return No return.
*/
NVRenderIndexBuffer(NVRenderContextImpl &context, size_t size,
NVRenderComponentTypes::Enum componentType,
NVRenderBufferUsageType::Enum usageType, NVDataRef<QT3DSU8> data);
///< destruvtor
~NVRenderIndexBuffer();
/**
* @brief get the component type (QT3DSU8, QT3DSU16)
*
* @return the component type
*/
virtual NVRenderComponentTypes::Enum GetComponentType() const { return m_ComponentType; }
/**
* @brief get the index count
*
* @return actual index count
*/
virtual QT3DSU32 GetNumIndices() const;
/**
* @brief bind the buffer bypasses the context state
*
* @return no return.
*/
void Bind() override;
/**
* @brief draw the buffer
*
* @param[in] drawMode draw mode (e.g Triangles...)
* @param[in] count vertex count
* @param[in] offset start offset in byte
*
* @return no return.
*/
void Draw(NVRenderDrawMode::Enum drawMode, QT3DSU32 count, QT3DSU32 offset) override;
/**
* @brief draw the buffer via indirec draw buffer setup
*
* @param[in] drawMode draw mode (e.g Triangles...)
* @param[in] offset byte offset into the bound drawIndirectBuffer see
* NVRenderDrawIndirectBuffer
*
* @return no return.
*/
virtual void DrawIndirect(NVRenderDrawMode::Enum drawMode, QT3DSU32 offset);
/**
* @brief get the backend object handle
*
* @return the backend object handle.
*/
NVRenderBackend::NVRenderBackendBufferObject GetBuffertHandle() const override
{
return m_BufferHandle;
}
// this will be obsolete
const void *GetImplementationHandle() const override
{
return reinterpret_cast<void *>(m_BufferHandle);
}
static NVRenderIndexBuffer *Create(NVRenderContextImpl &context,
NVRenderBufferUsageType::Enum usageType,
NVRenderComponentTypes::Enum componentType, size_t size,
NVConstDataRef<QT3DSU8> bufferData);
private:
NVRenderComponentTypes::Enum m_ComponentType; ///< component type (QT3DSU8, QT3DSU16)
};
}
}
#endif
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