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Diffstat (limited to 'src/render/Qt3DSRenderDataBuffer.cpp')
| -rw-r--r-- | src/render/Qt3DSRenderDataBuffer.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/render/Qt3DSRenderDataBuffer.cpp b/src/render/Qt3DSRenderDataBuffer.cpp new file mode 100644 index 0000000..b00b0af --- /dev/null +++ b/src/render/Qt3DSRenderDataBuffer.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** 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/Qt3DSRenderContext.h" +#include "render/Qt3DSRenderDataBuffer.h" +#include "render/Qt3DSRenderBaseTypes.h" +#include "foundation/Qt3DSFoundation.h" + +namespace qt3ds { +namespace render { + + NVRenderDataBuffer::NVRenderDataBuffer(NVRenderContextImpl &context, NVFoundationBase &fnd, + size_t size, NVRenderBufferBindFlags bindFlags, + NVRenderBufferUsageType::Enum usageType, + NVDataRef<QT3DSU8> data) + : m_Context(context) + , m_Foundation(fnd) + , mRefCount(0) + , m_Backend(context.GetBackend()) + , m_UsageType(usageType) + , m_BindFlags(bindFlags) + , m_BufferData(data) + , m_BufferCapacity(data.size()) + , m_BufferSize(size) + , m_OwnsData(false) + , m_Mapped(false) + { + m_BufferHandle = + m_Backend->CreateBuffer(size, bindFlags, usageType, (const void *)m_BufferData.begin()); + } + + NVRenderDataBuffer::~NVRenderDataBuffer() + { + if (m_BufferHandle) { + m_Backend->ReleaseBuffer(m_BufferHandle); + } + m_BufferHandle = 0; + + releaseMemory(); + } + + void NVRenderDataBuffer::releaseMemory() + { + // chekc if we should release memory + if (m_BufferData.size() && m_OwnsData) { + m_Foundation.getAllocator().deallocate(m_BufferData.begin()); + } + + m_BufferData = NVDataRef<QT3DSU8>(); + m_OwnsData = false; + } + + NVDataRef<QT3DSU8> NVRenderDataBuffer::MapBuffer() + { + // don't map twice + if (m_Mapped) { + qCCritical(INVALID_OPERATION, "Attempting to map a mapped buffer"); + QT3DS_ASSERT(false); + } + + QT3DSU8 *pData = (QT3DSU8 *)m_Backend->MapBuffer( + m_BufferHandle, m_BindFlags, 0, m_BufferSize, + NVRenderBufferAccessFlags(NVRenderBufferAccessTypeValues::Read + | NVRenderBufferAccessTypeValues::Write)); + + releaseMemory(); + m_BufferData = toDataRef(const_cast<QT3DSU8 *>(pData), (QT3DSU32)m_BufferSize); + m_BufferCapacity = (QT3DSU32)m_BufferSize; + m_OwnsData = false; + + // currently we return a reference to the system memory + m_Mapped = true; + return m_BufferData; + } + + NVDataRef<QT3DSU8> NVRenderDataBuffer::MapBufferRange(size_t offset, size_t size, + NVRenderBufferAccessFlags flags) + { + // don't map twice + if (m_Mapped) { + qCCritical(INVALID_OPERATION, "Attempting to map a mapped buffer"); + QT3DS_ASSERT(false); + } + // don't map out of range + if ((m_BufferSize < (offset + size)) || (size == 0)) { + qCCritical(INVALID_OPERATION, "Attempting to map out of buffer range"); + QT3DS_ASSERT(false); + } + + QT3DSU8 *pData = + (QT3DSU8 *)m_Backend->MapBuffer(m_BufferHandle, m_BindFlags, offset, size, flags); + + releaseMemory(); + m_BufferData = toDataRef(const_cast<QT3DSU8 *>(pData), (QT3DSU32)size); + m_BufferCapacity = (QT3DSU32)size; + m_OwnsData = false; + + // currently we return a reference to the system memory + m_Mapped = true; + return m_BufferData; + } + + void NVRenderDataBuffer::UnmapBuffer() + { + if (m_Mapped) { + // update hardware + m_Backend->UnmapBuffer(m_BufferHandle, m_BindFlags); + m_Mapped = false; + releaseMemory(); + } + } + + void NVRenderDataBuffer::UpdateBuffer(NVConstDataRef<QT3DSU8> data, bool ownsMemory) + { + // don't update a mapped buffer + if (m_Mapped) { + qCCritical(INVALID_OPERATION, "Attempting to update a mapped buffer"); + QT3DS_ASSERT(false); + } + + releaseMemory(); + + m_BufferData = toDataRef(const_cast<QT3DSU8 *>(data.begin()), data.size()); + m_BufferCapacity = data.mSize; + m_OwnsData = ownsMemory; + // update hardware + m_Backend->UpdateBuffer(m_BufferHandle, m_BindFlags, m_BufferCapacity, m_UsageType, + (const void *)m_BufferData.begin()); + } +} +} |