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Diffstat (limited to 'src/render/Qt3DSRenderAtomicCounterBuffer.cpp')
| -rw-r--r-- | src/render/Qt3DSRenderAtomicCounterBuffer.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/render/Qt3DSRenderAtomicCounterBuffer.cpp b/src/render/Qt3DSRenderAtomicCounterBuffer.cpp new file mode 100644 index 0000000..272c3e8 --- /dev/null +++ b/src/render/Qt3DSRenderAtomicCounterBuffer.cpp @@ -0,0 +1,156 @@ +/**************************************************************************** +** +** 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; + } +} +} |