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 QSGMATERIALSHADER_H
5#define QSGMATERIALSHADER_H
6
7#include <QtQuick/qtquickglobal.h>
8#include <QtCore/QRect>
9#include <QtGui/QMatrix4x4>
10#include <QtGui/QColor>
11#include <QtQuick/qsgmaterialtype.h>
12
13QT_BEGIN_NAMESPACE
14
15class QSGMaterial;
16class QSGMaterialShaderPrivate;
17class QSGTexture;
18class QRhiResourceUpdateBatch;
19class QRhi;
20class QShader;
21
22class Q_QUICK_EXPORT QSGMaterialShader
23{
24public:
25 class Q_QUICK_EXPORT RenderState {
26 public:
27 enum DirtyState
28 {
29 DirtyMatrix = 0x0001,
30 DirtyOpacity = 0x0002,
31 DirtyCachedMaterialData = 0x0004,
32 DirtyAll = 0xFFFF
33 };
34 Q_DECLARE_FLAGS(DirtyStates, DirtyState)
35
36 inline DirtyStates dirtyStates() const { return m_dirty; }
37
38 inline bool isMatrixDirty() const { return bool(m_dirty & QSGMaterialShader::RenderState::DirtyMatrix); }
39 inline bool isOpacityDirty() const { return bool(m_dirty & QSGMaterialShader::RenderState::DirtyOpacity); }
40
41 float opacity() const;
42 QMatrix4x4 combinedMatrix() const;
43 QMatrix4x4 combinedMatrix(qsizetype index) const;
44 QMatrix4x4 modelViewMatrix() const;
45 QMatrix4x4 projectionMatrix() const;
46 QMatrix4x4 projectionMatrix(qsizetype index) const;
47 qsizetype projectionMatrixCount() const;
48 QRect viewportRect() const;
49 QRect deviceRect() const;
50 float determinant() const;
51 float devicePixelRatio() const;
52
53 QByteArray *uniformData();
54 QRhiResourceUpdateBatch *resourceUpdateBatch();
55 QRhi *rhi();
56
57 private:
58 friend class QSGRenderer;
59 DirtyStates m_dirty;
60 const void *m_data;
61 };
62
63 struct GraphicsPipelineState {
64 enum BlendFactor {
65 Zero,
66 One,
67 SrcColor,
68 OneMinusSrcColor,
69 DstColor,
70 OneMinusDstColor,
71 SrcAlpha,
72 OneMinusSrcAlpha,
73 DstAlpha,
74 OneMinusDstAlpha,
75 ConstantColor,
76 OneMinusConstantColor,
77 ConstantAlpha,
78 OneMinusConstantAlpha,
79 SrcAlphaSaturate,
80 Src1Color,
81 OneMinusSrc1Color,
82 Src1Alpha,
83 OneMinusSrc1Alpha
84 };
85
86 enum class BlendOp {
87 Add,
88 Subtract,
89 ReverseSubtract,
90 Min,
91 Max,
92 };
93
94 enum ColorMaskComponent {
95 R = 1 << 0,
96 G = 1 << 1,
97 B = 1 << 2,
98 A = 1 << 3
99 };
100 Q_DECLARE_FLAGS(ColorMask, ColorMaskComponent)
101
102 enum CullMode {
103 CullNone,
104 CullFront,
105 CullBack
106 };
107
108 enum PolygonMode {
109 Fill,
110 Line,
111 };
112
113 bool blendEnable;
114 BlendFactor srcColor;
115 BlendFactor dstColor;
116 ColorMask colorWrite;
117 QColor blendConstant;
118 CullMode cullMode;
119 PolygonMode polygonMode;
120 bool separateBlendFactors;
121 BlendFactor srcAlpha;
122 BlendFactor dstAlpha;
123 BlendOp opColor;
124 BlendOp opAlpha;
125
126 // This struct is extensible while keeping BC since apps only ever get
127 // a ptr to the struct, it is not created by them.
128 };
129
130 enum Flag {
131 UpdatesGraphicsPipelineState = 0x0001
132 };
133 Q_DECLARE_FLAGS(Flags, Flag)
134
135 enum Stage {
136 VertexStage,
137 FragmentStage,
138 };
139
140 QSGMaterialShader();
141 virtual ~QSGMaterialShader();
142
143 virtual bool updateUniformData(RenderState &state,
144 QSGMaterial *newMaterial, QSGMaterial *oldMaterial);
145
146 virtual void updateSampledImage(RenderState &state, int binding, QSGTexture **texture,
147 QSGMaterial *newMaterial, QSGMaterial *oldMaterial);
148
149 virtual bool updateGraphicsPipelineState(RenderState &state, GraphicsPipelineState *ps,
150 QSGMaterial *newMaterial, QSGMaterial *oldMaterial);
151
152 Flags flags() const;
153 void setFlag(Flags flags, bool on = true);
154 void setFlags(Flags flags);
155
156 int combinedImageSamplerCount(int binding) const;
157
158protected:
159 Q_DECLARE_PRIVATE(QSGMaterialShader)
160 QSGMaterialShader(QSGMaterialShaderPrivate &dd);
161
162 // filename is for a file containing a serialized QShader.
163 void setShaderFileName(Stage stage, const QString &filename);
164 void setShaderFileName(Stage stage, const QString &filename, int viewCount);
165
166 void setShader(Stage stage, const QShader &shader);
167
168private:
169 QScopedPointer<QSGMaterialShaderPrivate> d_ptr;
170};
171
172Q_DECLARE_OPERATORS_FOR_FLAGS(QSGMaterialShader::RenderState::DirtyStates)
173Q_DECLARE_OPERATORS_FOR_FLAGS(QSGMaterialShader::GraphicsPipelineState::ColorMask)
174Q_DECLARE_OPERATORS_FOR_FLAGS(QSGMaterialShader::Flags)
175
176QT_END_NAMESPACE
177
178#endif
179

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source code of qtdeclarative/src/quick/scenegraph/coreapi/qsgmaterialshader.h