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39
40#ifndef QT3DRENDER_RENDER_BUFFERUTILS_P_H
41#define QT3DRENDER_RENDER_BUFFERUTILS_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <Qt3DRender/QAttribute>
55#include <QByteArray>
56
57QT_BEGIN_NAMESPACE
58
59
60namespace Qt3DRender {
61
62namespace Render {
63
64class GeometryRenderer;
65class NodeManagers;
66class Attribute;
67class Buffer;
68
69struct BufferInfo
70{
71 BufferInfo()
72 : type(QAttribute::VertexBaseType::Float)
73 , dataSize(0)
74 , count(0)
75 , byteStride(0)
76 , byteOffset(0)
77 , restartEnabled(false)
78 , restartIndexValue(-1)
79 {}
80
81 QByteArray data;
82 QAttribute::VertexBaseType type;
83 uint dataSize;
84 uint count;
85 uint byteStride;
86 uint byteOffset;
87 bool restartEnabled;
88 int restartIndexValue;
89};
90
91
92namespace BufferTypeInfo {
93
94 template <QAttribute::VertexBaseType> struct EnumToType;
95 template <> struct EnumToType<QAttribute::Byte> { typedef const char type; };
96 template <> struct EnumToType<QAttribute::UnsignedByte> { typedef const uchar type; };
97 template <> struct EnumToType<QAttribute::Short> { typedef const short type; };
98 template <> struct EnumToType<QAttribute::UnsignedShort> { typedef const ushort type; };
99 template <> struct EnumToType<QAttribute::Int> { typedef const int type; };
100 template <> struct EnumToType<QAttribute::UnsignedInt> { typedef const uint type; };
101 template <> struct EnumToType<QAttribute::Float> { typedef const float type; };
102 template <> struct EnumToType<QAttribute::Double> { typedef const double type; };
103
104 template<QAttribute::VertexBaseType v>
105 typename EnumToType<v>::type *castToType(const QByteArray &u, uint byteOffset)
106 {
107 return reinterpret_cast< typename EnumToType<v>::type *>(u.constData() + byteOffset);
108 }
109
110} // namespace BufferTypeInfo
111
112} // namespace Render
113
114} // namespace Qt3DRender
115
116QT_END_NAMESPACE
117
118
119#endif // QT3DRENDER_RENDER_BUFFERUTILS_P_H
120

source code of qt3d/src/render/backend/bufferutils_p.h