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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Quick 3D.
**
** $QT_BEGIN_LICENSE:GPL$
** 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
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** 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.
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****************************************************************************/
#include <QtQuick3DRender/private/qssgrendercontext_p.h>
#include <QtQuick3DRender/private/qssgrenderdatabuffer_p.h>
#include <QtQuick3DRender/private/qssgrenderbasetypes_p.h>
#include <QtQuick3DUtils/private/qssgutils_p.h>
QT_BEGIN_NAMESPACE
QSSGRenderDataBuffer::QSSGRenderDataBuffer(const QSSGRef<QSSGRenderContext> &context,
QSSGRenderBufferType bindFlags,
QSSGRenderBufferUsageType usageType,
QSSGByteView data)
: m_context(context)
, m_backend(context->backend())
, m_usageType(usageType)
, m_type(bindFlags)
, m_bufferData(data)
, m_bufferCapacity(data.size())
, m_bufferSize(data.size())
, m_mapped(false)
{
m_handle = m_backend->createBuffer(bindFlags, usageType, data);
}
QSSGRenderDataBuffer::~QSSGRenderDataBuffer()
{
if (m_handle)
m_backend->releaseBuffer(m_handle);
}
QSSGByteRef QSSGRenderDataBuffer::mapBuffer()
{
// don't map twice
if (m_mapped) {
qCCritical(RENDER_INVALID_OPERATION, "Attempting to map a mapped buffer");
Q_ASSERT(false);
}
quint8 *pData = (quint8 *)m_backend->mapBuffer(m_handle,
m_type,
0,
m_bufferSize,
QSSGRenderBufferAccessFlags(QSSGRenderBufferAccessTypeValues::Read
| QSSGRenderBufferAccessTypeValues::Write));
m_bufferData = toDataView(pData, (quint32)m_bufferSize);
m_bufferCapacity = (quint32)m_bufferSize;
// currently we return a reference to the system memory
m_mapped = true;
return QSSGByteRef(pData, qint32(m_bufferSize));
}
QSSGByteRef QSSGRenderDataBuffer::mapBufferRange(size_t offset, size_t size, QSSGRenderBufferAccessFlags flags)
{
// don't map twice
if (m_mapped) {
qCCritical(RENDER_INVALID_OPERATION, "Attempting to map a mapped buffer");
Q_ASSERT(false);
}
// don't map out of range
if ((m_bufferSize < (offset + size)) || (size == 0)) {
qCCritical(RENDER_INVALID_OPERATION, "Attempting to map out of buffer range");
Q_ASSERT(false);
}
quint8 *pData = (quint8 *)m_backend->mapBuffer(m_handle, m_type, offset, size, flags);
m_bufferData = toDataView(pData, (quint32)size);
m_bufferCapacity = (quint32)size;
// currently we return a reference to the system memory
m_mapped = true;
return QSSGByteRef(pData, qint32(m_bufferSize));
}
void QSSGRenderDataBuffer::unmapBuffer()
{
if (m_mapped) {
// update hardware
m_backend->unmapBuffer(m_handle, m_type);
m_mapped = false;
m_bufferData.clear();
}
}
void QSSGRenderDataBuffer::updateBuffer(QSSGByteView data)
{
// don't update a mapped buffer
if (m_mapped) {
qCCritical(RENDER_INVALID_OPERATION, "Attempting to update a mapped buffer");
Q_ASSERT(false);
}
m_bufferData = data;
m_bufferCapacity = data.mSize;
// update hardware
m_backend->updateBuffer(m_handle, m_type, m_usageType, data);
}
QT_END_NAMESPACE