diff options
author | Mike Krus <mike.krus@kdab.com> | 2017-02-10 22:09:03 +0000 |
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committer | Sean Harmer <sean.harmer@kdab.com> | 2017-02-12 13:12:19 +0000 |
commit | 518a7a922cc90865744c4e302650528796c75147 (patch) | |
tree | 1be0c29648d9d92b974571f9ca210e7b3a270641 /src/render/backend/bufferutils_p.h | |
parent | be8099cd83a9fedf84508538ab49a86a41fc61d6 (diff) |
Use coordinates visitor to avoid copying vertex data
Change-Id: Ibab8d6cf8cedc93b0585a3af2d989eef7e8263b4
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Diffstat (limited to 'src/render/backend/bufferutils_p.h')
-rw-r--r-- | src/render/backend/bufferutils_p.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/render/backend/bufferutils_p.h b/src/render/backend/bufferutils_p.h new file mode 100644 index 000000000..2bb35fac6 --- /dev/null +++ b/src/render/backend/bufferutils_p.h @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** Copyright (C) 2015 Paul Lemire paul.lemire350@gmail.com +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or 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.GPL2 and 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-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QT3DRENDER_RENDER_BUFFERUTILS_P_H +#define QT3DRENDER_RENDER_BUFFERUTILS_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <Qt3DRender/QAttribute> +#include <QByteArray> + +QT_BEGIN_NAMESPACE + + +namespace Qt3DRender { + +namespace Render { + +class GeometryRenderer; +class NodeManagers; +class Attribute; +class Buffer; + +struct BufferInfo +{ + BufferInfo() + : type(QAttribute::VertexBaseType::Float) + , dataSize(0) + , count(0) + , byteStride(0) + , byteOffset(0) + {} + + QByteArray data; + QAttribute::VertexBaseType type; + uint dataSize; + uint count; + uint byteStride; + uint byteOffset; +}; + + +namespace BufferTypeInfo { + + template <QAttribute::VertexBaseType> struct EnumToType; + template <> struct EnumToType<QAttribute::Byte> { typedef const char type; }; + template <> struct EnumToType<QAttribute::UnsignedByte> { typedef const uchar type; }; + template <> struct EnumToType<QAttribute::Short> { typedef const short type; }; + template <> struct EnumToType<QAttribute::UnsignedShort> { typedef const ushort type; }; + template <> struct EnumToType<QAttribute::Int> { typedef const int type; }; + template <> struct EnumToType<QAttribute::UnsignedInt> { typedef const uint type; }; + template <> struct EnumToType<QAttribute::Float> { typedef const float type; }; + template <> struct EnumToType<QAttribute::Double> { typedef const double type; }; + + template<QAttribute::VertexBaseType v> + typename EnumToType<v>::type *castToType(const QByteArray &u, uint byteOffset) + { + return reinterpret_cast< typename EnumToType<v>::type *>(u.constData() + byteOffset); + } + +} // namespace BufferTypeInfo + +} // namespace Render + +} // namespace Qt3DRender + +QT_END_NAMESPACE + + +#endif // QT3DRENDER_RENDER_BUFFERUTILS_P_H |