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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QQUICKSHAPENVPRRENDERER_P_H
#define QQUICKSHAPENVPRRENDERER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of a number of Qt sources files. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
#include <QtQuickShapes/private/qquickshapesglobal_p.h>
#include <QtQuickShapes/private/qquickshape_p_p.h>
#include <QtQuickShapes/private/qquicknvprfunctions_p.h>
#include <qsgrendernode.h>
#include <QColor>
#include <QVector4D>
#include <QDebug>
#if QT_CONFIG(opengl)
QT_BEGIN_NAMESPACE
class QQuickShapeNvprRenderNode;
class QOpenGLFramebufferObject;
class QOpenGLBuffer;
class QOpenGLExtraFunctions;
class QQuickShapeNvprRenderer : public QQuickAbstractPathRenderer
{
public:
enum Dirty {
DirtyPath = 0x01,
DirtyStyle = 0x02,
DirtyFillRule = 0x04,
DirtyDash = 0x08,
DirtyFillGradient = 0x10,
DirtyList = 0x20
};
void beginSync(int totalCount) override;
void setPath(int index, const QQuickPath *path) override;
void setStrokeColor(int index, const QColor &color) override;
void setStrokeWidth(int index, qreal w) override;
void setFillColor(int index, const QColor &color) override;
void setFillRule(int index, QQuickShapePath::FillRule fillRule) override;
void setJoinStyle(int index, QQuickShapePath::JoinStyle joinStyle, int miterLimit) override;
void setCapStyle(int index, QQuickShapePath::CapStyle capStyle) override;
void setStrokeStyle(int index, QQuickShapePath::StrokeStyle strokeStyle,
qreal dashOffset, const QVector<qreal> &dashPattern) override;
void setFillGradient(int index, QQuickShapeGradient *gradient) override;
void endSync(bool async) override;
void updateNode() override;
void setNode(QQuickShapeNvprRenderNode *node);
struct NvprPath {
QVector<GLubyte> cmd;
QVector<GLfloat> coord;
QByteArray str;
};
private:
struct ShapePathGuiData {
int dirty = 0;
NvprPath path;
qreal strokeWidth;
QColor strokeColor;
QColor fillColor;
QQuickShapePath::JoinStyle joinStyle;
int miterLimit;
QQuickShapePath::CapStyle capStyle;
QQuickShapePath::FillRule fillRule;
bool dashActive;
qreal dashOffset;
QVector<qreal> dashPattern;
FillGradientType fillGradientActive;
GradientDesc fillGradient;
};
void convertPath(const QQuickPath *path, ShapePathGuiData *d);
QQuickShapeNvprRenderNode *m_node = nullptr;
int m_accDirty = 0;
QVector<ShapePathGuiData> m_sp;
};
QDebug operator<<(QDebug debug, const QQuickShapeNvprRenderer::NvprPath &path);
class QQuickNvprMaterialManager
{
public:
enum Material {
MatSolid,
MatLinearGradient,
MatRadialGradient,
MatConicalGradient,
NMaterials
};
struct MaterialDesc {
GLuint ppl = 0;
GLuint prg = 0;
int uniLoc[8];
};
void create(QQuickNvprFunctions *nvpr);
MaterialDesc *activateMaterial(Material m);
void releaseResources();
private:
QQuickNvprFunctions *m_nvpr = nullptr;
MaterialDesc m_materials[NMaterials];
};
class QQuickNvprBlitter
{
public:
bool create();
void destroy();
bool isCreated() const { return m_program != nullptr; }
void texturedQuad(GLuint textureId, const QSize &size,
const QMatrix4x4 &proj, const QMatrix4x4 &modelview,
float opacity);
private:
QOpenGLShaderProgram *m_program = nullptr;
QOpenGLBuffer *m_buffer = nullptr;
int m_matrixLoc = -1;
int m_opacityLoc = -1;
QSize m_prevSize;
};
class QQuickShapeNvprRenderNode : public QSGRenderNode
{
public:
~QQuickShapeNvprRenderNode();
void render(const RenderState *state) override;
void releaseResources() override;
StateFlags changedStates() const override;
RenderingFlags flags() const override;
static bool isSupported();
private:
struct ShapePathRenderData {
GLuint path = 0;
int dirty = 0;
QQuickShapeNvprRenderer::NvprPath source;
GLfloat strokeWidth;
QVector4D strokeColor;
QVector4D fillColor;
GLenum joinStyle;
GLint miterLimit;
GLenum capStyle;
GLenum fillRule;
GLfloat dashOffset;
QVector<GLfloat> dashPattern;
QQuickAbstractPathRenderer::FillGradientType fillGradientActive;
QQuickAbstractPathRenderer::GradientDesc fillGradient;
QOpenGLFramebufferObject *fallbackFbo = nullptr;
bool fallbackValid = false;
QSize fallbackSize;
QPointF fallbackTopLeft;
bool hasFill() const { return !qFuzzyIsNull(fillColor.w()) || fillGradientActive; }
bool hasStroke() const { return strokeWidth >= 0.0f && !qFuzzyIsNull(strokeColor.w()); }
};
void updatePath(ShapePathRenderData *d);
void renderStroke(ShapePathRenderData *d, int strokeStencilValue, int writeMask);
void renderFill(ShapePathRenderData *d);
void renderOffscreenFill(ShapePathRenderData *d);
void setupStencilForCover(bool stencilClip, int sv);
static bool nvprInited;
static QQuickNvprFunctions nvpr;
static QQuickNvprMaterialManager mtlmgr;
QQuickNvprBlitter m_fallbackBlitter;
QOpenGLExtraFunctions *f = nullptr;
QVector<ShapePathRenderData> m_sp;
friend class QQuickShapeNvprRenderer;
};
QT_END_NAMESPACE
#endif // QT_CONFIG(opengl)
#endif // QQUICKSHAPENVPRRENDERER_P_H
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