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39
40#ifndef QQUICKSHAPENVPRRENDERER_P_H
41#define QQUICKSHAPENVPRRENDERER_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of a number of Qt sources files. This header file may change from
49// version to version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtQuickShapes/private/qquickshapesglobal_p.h>
55#include <QtQuickShapes/private/qquickshape_p_p.h>
56#include <QtQuickShapes/private/qquicknvprfunctions_p.h>
57#include <qsgrendernode.h>
58#include <QColor>
59#include <QVector4D>
60#include <QDebug>
61
62#if QT_CONFIG(opengl)
63
64QT_BEGIN_NAMESPACE
65
66class QQuickShapeNvprRenderNode;
67class QOpenGLFramebufferObject;
68class QOpenGLBuffer;
69class QOpenGLExtraFunctions;
70
71class QQuickShapeNvprRenderer : public QQuickAbstractPathRenderer
72{
73public:
74 enum Dirty {
75 DirtyPath = 0x01,
76 DirtyStyle = 0x02,
77 DirtyFillRule = 0x04,
78 DirtyDash = 0x08,
79 DirtyFillGradient = 0x10,
80 DirtyList = 0x20
81 };
82
83 void beginSync(int totalCount) override;
84 void setPath(int index, const QQuickPath *path) override;
85 void setStrokeColor(int index, const QColor &color) override;
86 void setStrokeWidth(int index, qreal w) override;
87 void setFillColor(int index, const QColor &color) override;
88 void setFillRule(int index, QQuickShapePath::FillRule fillRule) override;
89 void setJoinStyle(int index, QQuickShapePath::JoinStyle joinStyle, int miterLimit) override;
90 void setCapStyle(int index, QQuickShapePath::CapStyle capStyle) override;
91 void setStrokeStyle(int index, QQuickShapePath::StrokeStyle strokeStyle,
92 qreal dashOffset, const QVector<qreal> &dashPattern) override;
93 void setFillGradient(int index, QQuickShapeGradient *gradient) override;
94 void endSync(bool async) override;
95
96 void updateNode() override;
97
98 void setNode(QQuickShapeNvprRenderNode *node);
99
100 struct NvprPath {
101 QVector<GLubyte> cmd;
102 QVector<GLfloat> coord;
103 QByteArray str;
104 };
105
106private:
107 struct ShapePathGuiData {
108 int dirty = 0;
109 NvprPath path;
110 qreal strokeWidth;
111 QColor strokeColor;
112 QColor fillColor;
113 QQuickShapePath::JoinStyle joinStyle;
114 int miterLimit;
115 QQuickShapePath::CapStyle capStyle;
116 QQuickShapePath::FillRule fillRule;
117 bool dashActive;
118 qreal dashOffset;
119 QVector<qreal> dashPattern;
120 FillGradientType fillGradientActive;
121 GradientDesc fillGradient;
122 };
123
124 void convertPath(const QQuickPath *path, ShapePathGuiData *d);
125
126 QQuickShapeNvprRenderNode *m_node = nullptr;
127 int m_accDirty = 0;
128
129 QVector<ShapePathGuiData> m_sp;
130};
131
132QDebug operator<<(QDebug debug, const QQuickShapeNvprRenderer::NvprPath &path);
133
134class QQuickNvprMaterialManager
135{
136public:
137 enum Material {
138 MatSolid,
139 MatLinearGradient,
140 MatRadialGradient,
141 MatConicalGradient,
142
143 NMaterials
144 };
145
146 struct MaterialDesc {
147 GLuint ppl = 0;
148 GLuint prg = 0;
149 int uniLoc[8];
150 };
151
152 void create(QQuickNvprFunctions *nvpr);
153 MaterialDesc *activateMaterial(Material m);
154 void releaseResources();
155
156private:
157 QQuickNvprFunctions *m_nvpr = nullptr;
158 MaterialDesc m_materials[NMaterials];
159};
160
161class QQuickNvprBlitter
162{
163public:
164 bool create();
165 void destroy();
166 bool isCreated() const { return m_program != nullptr; }
167 void texturedQuad(GLuint textureId, const QSize &size,
168 const QMatrix4x4 &proj, const QMatrix4x4 &modelview,
169 float opacity);
170
171private:
172 QOpenGLShaderProgram *m_program = nullptr;
173 QOpenGLBuffer *m_buffer = nullptr;
174 int m_matrixLoc = -1;
175 int m_opacityLoc = -1;
176 QSize m_prevSize;
177};
178
179class QQuickShapeNvprRenderNode : public QSGRenderNode
180{
181public:
182 ~QQuickShapeNvprRenderNode();
183
184 void render(const RenderState *state) override;
185 void releaseResources() override;
186 StateFlags changedStates() const override;
187 RenderingFlags flags() const override;
188
189 static bool isSupported();
190
191private:
192 struct ShapePathRenderData {
193 GLuint path = 0;
194 int dirty = 0;
195 QQuickShapeNvprRenderer::NvprPath source;
196 GLfloat strokeWidth;
197 QVector4D strokeColor;
198 QVector4D fillColor;
199 GLenum joinStyle;
200 GLint miterLimit;
201 GLenum capStyle;
202 GLenum fillRule;
203 GLfloat dashOffset;
204 QVector<GLfloat> dashPattern;
205 QQuickAbstractPathRenderer::FillGradientType fillGradientActive;
206 QQuickAbstractPathRenderer::GradientDesc fillGradient;
207 QOpenGLFramebufferObject *fallbackFbo = nullptr;
208 bool fallbackValid = false;
209 QSize fallbackSize;
210 QPointF fallbackTopLeft;
211
212 bool hasFill() const { return !qFuzzyIsNull(f: fillColor.w()) || fillGradientActive; }
213 bool hasStroke() const { return strokeWidth >= 0.0f && !qFuzzyIsNull(f: strokeColor.w()); }
214 };
215
216 void updatePath(ShapePathRenderData *d);
217 void renderStroke(ShapePathRenderData *d, int strokeStencilValue, int writeMask);
218 void renderFill(ShapePathRenderData *d);
219 void renderOffscreenFill(ShapePathRenderData *d);
220 void setupStencilForCover(bool stencilClip, int sv);
221
222 static bool nvprInited;
223 static QQuickNvprFunctions nvpr;
224 static QQuickNvprMaterialManager mtlmgr;
225
226 QQuickNvprBlitter m_fallbackBlitter;
227 QOpenGLExtraFunctions *f = nullptr;
228
229 QVector<ShapePathRenderData> m_sp;
230
231 friend class QQuickShapeNvprRenderer;
232};
233
234QT_END_NAMESPACE
235
236#endif // QT_CONFIG(opengl)
237
238#endif // QQUICKSHAPENVPRRENDERER_P_H
239

source code of qtdeclarative/src/quickshapes/qquickshapenvprrenderer_p.h