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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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "render/Qt3DSRenderAtomicCounterBuffer.h"
#include "render/Qt3DSRenderContext.h"
#include "render/Qt3DSRenderShaderProgram.h"
namespace qt3ds {
namespace render {
///< struct handling a constant buffer entry
class AtomicCounterBufferEntry
{
public:
CRegisteredString m_Name; ///< parameter Name
QT3DSI32 m_Offset; ///< offset into the memory buffer
AtomicCounterBufferEntry(CRegisteredString name, QT3DSI32 offset)
: m_Name(name)
, m_Offset(offset)
{
}
};
NVRenderAtomicCounterBuffer::NVRenderAtomicCounterBuffer(
NVRenderContextImpl &context, CRegisteredString bufferName, size_t size,
NVRenderBufferUsageType::Enum usageType, NVDataRef<QT3DSU8> data)
: NVRenderDataBuffer(context, context.GetFoundation(), size,
NVRenderBufferBindValues::Storage, usageType, data)
, m_Name(bufferName)
, m_AtomicCounterBufferEntryMap(
m_Foundation.getAllocator(),
"NVRenderAtomicCounterBuffer::m_AtomicCounterBufferEntryMap")
, m_Dirty(true)
{
QT3DS_ASSERT(context.IsStorageBufferSupported());
}
NVRenderAtomicCounterBuffer::~NVRenderAtomicCounterBuffer()
{
for (TRenderAtomiCounterBufferEntryMap::iterator
iter = m_AtomicCounterBufferEntryMap.begin(),
end = m_AtomicCounterBufferEntryMap.end();
iter != end; ++iter) {
NVDelete(m_Foundation.getAllocator(), iter->second);
}
m_AtomicCounterBufferEntryMap.clear();
m_Context.BufferDestroyed(*this);
}
void NVRenderAtomicCounterBuffer::Bind()
{
if (m_Mapped) {
qCCritical(INVALID_OPERATION, "Attempting to Bind a locked buffer");
QT3DS_ASSERT(false);
}
m_Backend->BindBuffer(m_BufferHandle, m_BindFlags);
}
void NVRenderAtomicCounterBuffer::BindToShaderProgram(QT3DSU32 index)
{
m_Backend->ProgramSetAtomicCounterBuffer(index, m_BufferHandle);
}
void NVRenderAtomicCounterBuffer::Update()
{
// we only update the buffer if it is dirty and we actually have some data
if (m_Dirty && m_BufferData.size()) {
m_Backend->UpdateBuffer(m_BufferHandle, m_BindFlags, m_BufferData.size(), m_UsageType,
m_BufferData.begin());
m_Dirty = false;
}
}
void NVRenderAtomicCounterBuffer::UpdateData(QT3DSI32 offset, NVDataRef<QT3DSU8> data)
{
// we only update the buffer if we something
if (data.size())
m_Backend->UpdateBuffer(m_BufferHandle, m_BindFlags, data.size(), m_UsageType,
data.begin() + offset);
}
void NVRenderAtomicCounterBuffer::AddParam(CRegisteredString name, QT3DSU32 offset)
{
if (m_AtomicCounterBufferEntryMap.find(name) == m_AtomicCounterBufferEntryMap.end()) {
AtomicCounterBufferEntry *newEntry =
QT3DS_NEW(m_Foundation.getAllocator(), AtomicCounterBufferEntry)(name, offset);
if (newEntry)
m_AtomicCounterBufferEntryMap.insert(eastl::make_pair(name, newEntry));
} else {
// no duplicated entries
return;
}
}
bool NVRenderAtomicCounterBuffer::ContainsParam(CRegisteredString name)
{
if (m_AtomicCounterBufferEntryMap.find(name) != m_AtomicCounterBufferEntryMap.end())
return true;
else
return false;
}
NVRenderAtomicCounterBuffer *
NVRenderAtomicCounterBuffer::Create(NVRenderContextImpl &context, const char *bufferName,
NVRenderBufferUsageType::Enum usageType, size_t size,
NVConstDataRef<QT3DSU8> bufferData)
{
NVFoundationBase &fnd(context.GetFoundation());
NVRenderAtomicCounterBuffer *retval = NULL;
if (context.IsAtomicCounterBufferSupported()) {
CRegisteredString theBufferName(context.GetStringTable().RegisterStr(bufferName));
QT3DSU32 bufSize = sizeof(NVRenderAtomicCounterBuffer);
QT3DSU8 *newMem = (QT3DSU8 *)QT3DS_ALLOC(fnd.getAllocator(), bufSize, "AtomicCounterBuffer");
retval = new (newMem) NVRenderAtomicCounterBuffer(
context, theBufferName, size, usageType,
toDataRef(const_cast<QT3DSU8 *>(bufferData.begin()), bufferData.size()));
} else {
QT3DS_ASSERT(false);
}
return retval;
}
}
}
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