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40
41#ifndef QT3DRENDER_RENDER_GENERICSTATE_H
42#define QT3DRENDER_RENDER_GENERICSTATE_H
43
44//
45// W A R N I N G
46// -------------
47//
48// This file is not part of the Qt API. It exists for the convenience
49// of other Qt classes. This header file may change from version to
50// version without notice, or even be removed.
51//
52// We mean it.
53//
54
55#include <Qt3DRender/private/backendnode_p.h>
56#include <Qt3DRender/private/qrenderstatecreatedchange_p.h>
57#include <Qt3DCore/private/qresourcemanager_p.h>
58#include <Qt3DRender/private/statemask_p.h>
59#include <Qt3DRender/private/qt3drender_global_p.h>
60//#include <Qt3DRender/private/statevariant_p.h>
61#include <QList>
62#include <QVector3D>
63#include <QOpenGLContext>
64
65QT_BEGIN_NAMESPACE
66
67namespace Qt3DRender {
68
69class QRenderState;
70
71namespace Render {
72
73class GraphicsContext;
74
75typedef quint64 StateMaskSet;
76
77class Q_3DRENDERSHARED_PRIVATE_EXPORT RenderStateImpl
78{
79public:
80 virtual ~RenderStateImpl() {}
81
82 virtual StateMask mask() const = 0;
83 virtual bool equalTo(const RenderStateImpl &renderState) const = 0;
84 virtual void updateProperties(const QRenderState *);
85};
86
87template <class StateSetImpl, StateMask stateMask, typename ... T>
88class GenericState : public RenderStateImpl
89{
90public:
91 GenericState *set(T... values)
92 {
93 m_values = std::tuple<T ...>(values...);
94 return this;
95 }
96
97 bool equalTo(const RenderStateImpl &renderState) const override
98 {
99 const GenericState *other = static_cast<const GenericState*>(&renderState);
100 return (other != nullptr && other->m_values == m_values);
101 }
102
103 StateMask mask() const override
104 {
105 return GenericState::type();
106 }
107
108 static StateMask type()
109 {
110 return stateMask;
111 }
112
113 std::tuple<T ...> values() const
114 {
115 return m_values;
116 }
117
118protected:
119 std::tuple<T ...> m_values;
120};
121
122} // namespace Render
123} // namespace Qt3DRender
124
125QT_END_NAMESPACE
126
127#endif // QT3DRENDER_RENDER_GENERICSTATE_H
128

source code of qt3d/src/render/renderstates/genericstate_p.h