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40 | |
41 | #ifndef QT3DRENDER_RENDER_RENDERSTATE_H |
42 | #define QT3DRENDER_RENDER_RENDERSTATE_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/genericstate_p.h> |
56 | #include <Qt3DRender/private/renderstates_p.h> |
57 | #include <Qt3DRender/private/statevariant_p.h> |
58 | #include <QVector> |
59 | |
60 | QT_BEGIN_NAMESPACE |
61 | |
62 | namespace Qt3DRender { |
63 | |
64 | class QRenderState; |
65 | |
66 | namespace Render { |
67 | |
68 | class RenderState; |
69 | |
70 | class Q_3DRENDERSHARED_PRIVATE_EXPORT RenderStateSet |
71 | { |
72 | public: |
73 | RenderStateSet(); |
74 | ~RenderStateSet(); |
75 | |
76 | template<typename GenericState> |
77 | void addState(const GenericState &state) |
78 | { |
79 | addState(StateVariant::fromValue(state)); |
80 | } |
81 | |
82 | /** |
83 | * @brief changeCost - metric of cost to change to this state-set from |
84 | * a candidate previous state-set. This is used to find an optimal |
85 | * ordering of state-sets when sending draw commands. |
86 | * @param previousState |
87 | * @return |
88 | */ |
89 | int changeCost(RenderStateSet* previousState); |
90 | |
91 | StateMaskSet stateMask() const; |
92 | void merge(const RenderStateSet *other); |
93 | |
94 | const QVector<StateVariant>& states() const noexcept { return m_states; } |
95 | QVector<StateVariant>& states() noexcept { return m_states; } |
96 | |
97 | bool canAddStateOfType(StateMask type) const; |
98 | |
99 | /** |
100 | * @brief contains - check if this set contains a matching piece of state |
101 | * @param ds |
102 | * @return |
103 | */ |
104 | bool contains(const StateVariant &ds) const; |
105 | |
106 | private: |
107 | bool hasStateOfType(StateMask type) const; |
108 | bool allowMultipleStatesOfType(StateMask type) const; |
109 | |
110 | private: |
111 | StateMaskSet m_stateMask; |
112 | QVector<StateVariant> m_states; |
113 | }; |
114 | |
115 | template<> |
116 | Q_3DRENDERSHARED_PRIVATE_EXPORT void RenderStateSet::addState<StateVariant>(const StateVariant &state); |
117 | |
118 | } // namespace Render |
119 | } // namespace Qt3DRender |
120 | |
121 | QT_END_NAMESPACE |
122 | |
123 | #endif // QT3DRENDER_RENDER_RENDERSTATE_H |
124 | |