1// Copyright (C) 2019 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QSGRHISHADEREFFECTNODE_P_H
5#define QSGRHISHADEREFFECTNODE_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <private/qsgadaptationlayer_p.h>
19#include <qsgmaterial.h>
20#include <QUrl>
21
22QT_BEGIN_NAMESPACE
23
24class QSGDefaultRenderContext;
25class QSGPlainTexture;
26class QSGRhiShaderEffectNode;
27class QFileSelector;
28
29class QSGRhiShaderLinker
30{
31public:
32 void reset(const QShader &vs, const QShader &fs);
33
34 void feedConstants(const QSGShaderEffectNode::ShaderData &shader, const QSet<int> *dirtyIndices = nullptr);
35 void feedSamplers(const QSGShaderEffectNode::ShaderData &shader, const QSet<int> *dirtyIndices = nullptr);
36 void linkTextureSubRects();
37
38 void dump();
39
40 struct Constant {
41 uint size;
42 QSGShaderEffectNode::VariableData::SpecialType specialType;
43 QVariant value;
44 bool operator==(const Constant &other) const {
45 return size == other.size && specialType == other.specialType
46 && (specialType == QSGShaderEffectNode::VariableData::None ? value == other.value : true);
47 }
48 };
49
50 bool m_error;
51 QShader m_vs;
52 QShader m_fs;
53 QHash<uint, Constant> m_constants; // offset -> Constant
54 QHash<int, QVariant> m_samplers; // binding -> value (source ref)
55 QHash<QByteArray, int> m_samplerNameMap; // name -> binding
56 QSet<int> m_subRectBindings;
57};
58
59QDebug operator<<(QDebug debug, const QSGRhiShaderLinker::Constant &c);
60
61class QSGRhiShaderEffectMaterial : public QSGMaterial
62{
63public:
64 QSGRhiShaderEffectMaterial(QSGRhiShaderEffectNode *node);
65 ~QSGRhiShaderEffectMaterial();
66
67 int compare(const QSGMaterial *other) const override;
68 QSGMaterialType *type() const override;
69 QSGMaterialShader *createShader(QSGRendererInterface::RenderMode renderMode) const override;
70
71 void updateTextureProviders(bool layoutChange);
72
73 bool usesSubRectUniform(int binding) const { return m_linker.m_subRectBindings.contains(value: binding); }
74
75 static const int MAX_BINDINGS = 32;
76
77 QSGRhiShaderEffectNode *m_node;
78 QSGMaterialType *m_materialType = nullptr;
79 void *m_materialTypeCacheKey = nullptr;
80 QSGRhiShaderLinker m_linker;
81 QVector<QSGTextureProvider *> m_textureProviders; // [binding] = QSGTextureProvider
82 bool m_geometryUsesTextureSubRect = false;
83 QSGShaderEffectNode::CullMode m_cullMode = QSGShaderEffectNode::NoCulling;
84 bool m_hasCustomVertexShader = false;
85 bool m_hasCustomFragmentShader = false;
86 QShader m_vertexShader;
87 QShader m_fragmentShader;
88 QSGPlainTexture *m_dummyTexture = nullptr;
89};
90
91class QSGRhiShaderEffectNode : public QSGShaderEffectNode
92{
93 Q_OBJECT
94
95public:
96 QSGRhiShaderEffectNode(QSGDefaultRenderContext *rc);
97
98 QRectF updateNormalizedTextureSubRect(bool supportsAtlasTextures) override;
99 void syncMaterial(SyncData *syncData) override;
100 void preprocess() override;
101
102 static void resetMaterialTypeCache(void *materialTypeCacheKey);
103 static void garbageCollectMaterialTypeCache(void *materialTypeCacheKey);
104
105private Q_SLOTS:
106 void handleTextureChange();
107 void handleTextureProviderDestroyed(QObject *object);
108
109private:
110 QSGRhiShaderEffectMaterial m_material;
111};
112
113class QSGRhiGuiThreadShaderEffectManager : public QSGGuiThreadShaderEffectManager
114{
115public:
116 bool hasSeparateSamplerAndTextureObjects() const override;
117 QString log() const override;
118 Status status() const override;
119 void prepareShaderCode(ShaderInfo::Type typeHint, const QUrl &src, ShaderInfo *result) override;
120
121private:
122 bool reflect(ShaderInfo *result);
123 Status m_status = Uncompiled;
124 QFileSelector *m_fileSelector = nullptr;
125};
126
127QT_END_NAMESPACE
128
129#endif // QSGRHISHADEREFFECTNODE_P_H
130

source code of qtdeclarative/src/quick/scenegraph/qsgrhishadereffectnode_p.h