| 1 | // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
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| 2 | // Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies). |
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| 3 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 4 | |
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| 5 | #ifndef QT3DRENDER_RENDER_RENDERSTATE_H |
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| 6 | #define QT3DRENDER_RENDER_RENDERSTATE_H |
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| 7 | |
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| 8 | // |
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| 9 | // W A R N I N G |
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| 10 | // ------------- |
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| 11 | // |
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| 12 | // This file is not part of the Qt API. It exists for the convenience |
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| 13 | // of other Qt classes. This header file may change from version to |
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| 14 | // version without notice, or even be removed. |
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| 15 | // |
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| 16 | // We mean it. |
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| 17 | // |
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| 18 | |
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| 19 | #include <Qt3DRender/private/genericstate_p.h> |
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| 20 | #include <Qt3DRender/private/renderstates_p.h> |
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| 21 | #include <Qt3DRender/private/statevariant_p.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | namespace Qt3DRender { |
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| 26 | |
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| 27 | class QRenderState; |
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| 28 | |
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| 29 | namespace Render { |
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| 30 | |
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| 31 | class RenderState; |
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| 32 | |
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| 33 | class Q_3DRENDERSHARED_PRIVATE_EXPORT RenderStateSet |
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| 34 | { |
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| 35 | public: |
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| 36 | RenderStateSet(); |
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| 37 | ~RenderStateSet(); |
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| 38 | |
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| 39 | template<typename GenericState> |
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| 40 | void addState(const GenericState &state) |
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| 41 | { |
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| 42 | addState(StateVariant::fromValue(state)); |
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| 43 | } |
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| 44 | |
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| 45 | /** |
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| 46 | * @brief changeCost - metric of cost to change to this state-set from |
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| 47 | * a candidate previous state-set. This is used to find an optimal |
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| 48 | * ordering of state-sets when sending draw commands. |
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| 49 | * @param previousState |
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| 50 | * @return |
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| 51 | */ |
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| 52 | int changeCost(RenderStateSet* previousState); |
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| 53 | |
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| 54 | StateMaskSet stateMask() const; |
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| 55 | void merge(const RenderStateSet *other); |
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| 56 | |
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| 57 | const std::vector<StateVariant>& states() const noexcept { return m_states; } |
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| 58 | std::vector<StateVariant>& states() noexcept { return m_states; } |
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| 59 | |
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| 60 | bool canAddStateOfType(StateMask type) const; |
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| 61 | |
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| 62 | /** |
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| 63 | * @brief contains - check if this set contains a matching piece of state |
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| 64 | * @param ds |
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| 65 | * @return |
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| 66 | */ |
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| 67 | bool contains(const StateVariant &ds) const; |
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| 68 | |
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| 69 | private: |
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| 70 | bool hasStateOfType(StateMask type) const; |
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| 71 | bool allowMultipleStatesOfType(StateMask type) const; |
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| 72 | |
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| 73 | private: |
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| 74 | StateMaskSet m_stateMask; |
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| 75 | std::vector<StateVariant> m_states; |
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| 76 | }; |
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| 77 | |
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| 78 | template<> |
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| 79 | Q_3DRENDERSHARED_PRIVATE_EXPORT void RenderStateSet::addState<StateVariant>(const StateVariant &state); |
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| 80 | |
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| 81 | } // namespace Render |
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| 82 | } // namespace Qt3DRender |
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| 83 | |
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| 84 | QT_END_NAMESPACE |
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| 85 | |
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| 86 | #endif // QT3DRENDER_RENDER_RENDERSTATE_H |
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| 87 | |
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