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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKPATHITEMNVPRRENDERER_P_H
#define QQUICKPATHITEMNVPRRENDERER_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 "qquickpathitem_p_p.h"
#include <qsgrendernode.h>
#include <private/qquicknvprfunctions_p.h>
#include <QColor>
#include <QVector4D>
#include <QDebug>
#ifndef QT_NO_OPENGL
QT_BEGIN_NAMESPACE
class QQuickPathItemNvprRenderNode;
class QOpenGLFramebufferObject;
class QOpenGLBuffer;
class QOpenGLExtraFunctions;
class QQuickPathItemNvprRenderer : public QQuickAbstractPathRenderer
{
public:
enum Dirty {
DirtyPath = 0x01,
DirtyStyle = 0x02,
DirtyFillRule = 0x04,
DirtyDash = 0x08,
DirtyFillGradient = 0x10,
DirtyAll = 0xFF
};
QQuickPathItemNvprRenderer(QQuickItem *item)
: m_item(item)
{ }
void beginSync() override;
void setPath(const QQuickPath *path) override;
void setStrokeColor(const QColor &color) override;
void setStrokeWidth(qreal w) override;
void setFillColor(const QColor &color) override;
void setFillRule(QQuickPathItem::FillRule fillRule) override;
void setJoinStyle(QQuickPathItem::JoinStyle joinStyle, int miterLimit) override;
void setCapStyle(QQuickPathItem::CapStyle capStyle) override;
void setStrokeStyle(QQuickPathItem::StrokeStyle strokeStyle,
qreal dashOffset, const QVector<qreal> &dashPattern) override;
void setFillGradient(QQuickPathGradient *gradient) override;
void endSync() override;
void updatePathRenderNode() override;
void setNode(QQuickPathItemNvprRenderNode *node);
struct NvprPath {
QVector<GLubyte> cmd;
QVector<GLfloat> coord;
};
private:
void convertPath(const QQuickPath *path);
QQuickItem *m_item;
QQuickPathItemNvprRenderNode *m_node = nullptr;
int m_dirty = 0;
NvprPath m_path;
qreal m_strokeWidth;
QColor m_strokeColor;
QColor m_fillColor;
QQuickPathItem::JoinStyle m_joinStyle;
int m_miterLimit;
QQuickPathItem::CapStyle m_capStyle;
QQuickPathItem::FillRule m_fillRule;
bool m_dashActive;
qreal m_dashOffset;
QVector<qreal> m_dashPattern;
bool m_fillGradientActive;
QQuickPathItemGradientCache::GradientDesc m_fillGradient;
};
QDebug operator<<(QDebug debug, const QQuickPathItemNvprRenderer::NvprPath &path);
class QQuickNvprMaterialManager
{
public:
enum Material {
MatSolid,
MatLinearGradient,
NMaterials
};
struct MaterialDesc {
GLuint ppl = 0;
GLuint prg = 0;
int uniLoc[4];
};
void create(QQuickNvprFunctions *nvpr);
MaterialDesc *activateMaterial(Material m);
void releaseResources();
private:
QQuickNvprFunctions *m_nvpr;
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;
int m_opacityLoc;
QSize m_prevSize;
};
class QQuickPathItemNvprRenderNode : public QSGRenderNode
{
public:
QQuickPathItemNvprRenderNode(QQuickPathItem *item);
~QQuickPathItemNvprRenderNode();
void render(const RenderState *state) override;
void releaseResources() override;
StateFlags changedStates() const override;
RenderingFlags flags() const override;
QRectF rect() const override;
static bool isSupported();
private:
void updatePath();
void renderStroke(int strokeStencilValue, int writeMask);
void renderFill();
void renderOffscreenFill();
void setupStencilForCover(bool stencilClip, int sv);
static bool nvprInited;
static QQuickNvprFunctions nvpr;
static QQuickNvprMaterialManager mtlmgr;
QQuickPathItem *m_item;
GLuint m_path = 0;
int m_dirty = 0;
QQuickPathItemNvprRenderer::NvprPath m_source;
GLfloat m_strokeWidth;
QVector4D m_strokeColor;
QVector4D m_fillColor;
GLenum m_joinStyle;
GLint m_miterLimit;
GLenum m_capStyle;
GLenum m_fillRule;
GLfloat m_dashOffset;
QVector<GLfloat> m_dashPattern;
bool m_fillGradientActive;
QQuickPathItemGradientCache::GradientDesc m_fillGradient;
QOpenGLFramebufferObject *m_fallbackFbo = nullptr;
QQuickNvprBlitter m_fallbackBlitter;
QOpenGLExtraFunctions *f = nullptr;
friend class QQuickPathItemNvprRenderer;
};
QT_END_NAMESPACE
#endif // QT_NO_OPENGL
#endif // QQUICKPATHITEMNVPRRENDERER_P_H
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