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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSGCONTEXT_H
#define QSGCONTEXT_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/QObject>
#include <QtCore/qabstractanimation.h>
#include <QtCore/QMutex>
#include <QtGui/QImage>
#include <QtGui/QSurfaceFormat>
#include <private/qtquickglobal_p.h>
#include <private/qrawfont_p.h>
#include <private/qfontengine_p.h>
#include <QtQuick/qsgnode.h>
#include <QtQuick/qsgrendererinterface.h>
#include <QtQuick/qsgtextnode.h>
#include <QtCore/qpointer.h>
QT_BEGIN_NAMESPACE
class QSGContextPrivate;
class QSGInternalRectangleNode;
class QSGInternalImageNode;
class QSGInternalTextNode;
class QSGPainterNode;
class QSGGlyphNode;
class QSGRenderer;
class QSGDistanceFieldGlyphCache;
class QQuickWindow;
class QSGTexture;
class QSGMaterial;
class QSGRenderLoop;
class QSGLayer;
class QQuickTextureFactory;
class QSGCompressedTextureFactory;
class QSGContext;
class QQuickPaintedItem;
class QSGRendererInterface;
class QSGShaderEffectNode;
class QSGGuiThreadShaderEffectManager;
class QSGRectangleNode;
class QSGTextNode;
class QSGImageNode;
class QSGNinePatchNode;
class QSGSpriteNode;
class QSGRenderContext;
class QSGRenderTarget;
class QRhi;
class QRhiRenderTarget;
class QRhiRenderPassDescriptor;
class QRhiCommandBuffer;
class QQuickGraphicsConfiguration;
class QQuickItem;
class QSGCurveGlyphAtlas;
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_TIME_RENDERLOOP)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_TIME_COMPILATION)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_TIME_TEXTURE)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_TIME_GLYPH)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_TIME_RENDERER)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_INFO)
Q_DECLARE_LOGGING_CATEGORY(QSG_LOG_RENDERLOOP)
class Q_QUICK_EXPORT QSGContext : public QObject
{
Q_OBJECT
public:
enum AntialiasingMethod {
UndecidedAntialiasing,
VertexAntialiasing,
MsaaAntialiasing
};
explicit QSGContext(QObject *parent = nullptr);
~QSGContext() override;
virtual void renderContextInitialized(QSGRenderContext *renderContext);
virtual void renderContextInvalidated(QSGRenderContext *renderContext);
virtual QSGRenderContext *createRenderContext() = 0;
QSGInternalRectangleNode *createInternalRectangleNode(const QRectF &rect, const QColor &c);
virtual QSGInternalRectangleNode *createInternalRectangleNode() = 0;
virtual QSGInternalImageNode *createInternalImageNode(QSGRenderContext *renderContext) = 0;
virtual QSGInternalTextNode *createInternalTextNode(QSGRenderContext *renderContext);
virtual QSGPainterNode *createPainterNode(QQuickPaintedItem *item) = 0;
virtual QSGGlyphNode *createGlyphNode(QSGRenderContext *rc, QSGTextNode::RenderType renderType, int renderTypeQuality) = 0;
virtual QSGLayer *createLayer(QSGRenderContext *renderContext) = 0;
virtual QSGGuiThreadShaderEffectManager *createGuiThreadShaderEffectManager();
virtual QSGShaderEffectNode *createShaderEffectNode(QSGRenderContext *renderContext);
#if QT_CONFIG(quick_sprite)
virtual QSGSpriteNode *createSpriteNode() = 0;
#endif
virtual QAnimationDriver *createAnimationDriver(QObject *parent);
virtual float vsyncIntervalForAnimationDriver(QAnimationDriver *driver);
virtual bool isVSyncDependent(QAnimationDriver *driver);
virtual QSize minimumFBOSize() const;
virtual QSurfaceFormat defaultSurfaceFormat() const = 0;
virtual QSGRendererInterface *rendererInterface(QSGRenderContext *renderContext);
virtual QSGTextNode *createTextNode(QSGRenderContext *renderContext);
virtual QSGRectangleNode *createRectangleNode() = 0;
virtual QSGImageNode *createImageNode() = 0;
virtual QSGNinePatchNode *createNinePatchNode() = 0;
static QSGContext *createDefaultContext();
static QQuickTextureFactory *createTextureFactoryFromImage(const QImage &image);
static QSGRenderLoop *createWindowManager();
static void setBackend(const QString &backend);
static QString backend();
};
class Q_QUICK_EXPORT QSGRenderContext : public QObject
{
Q_OBJECT
public:
enum CreateTextureFlags {
CreateTexture_Alpha = 0x1,
CreateTexture_Atlas = 0x2,
CreateTexture_Mipmap = 0x4
};
QSGRenderContext(QSGContext *context);
~QSGRenderContext() override;
QSGContext *sceneGraphContext() const { return m_sg; }
virtual bool isValid() const { return true; }
struct InitParams { };
virtual void initialize(const InitParams *params);
virtual void invalidate();
using RenderPassCallback = void (*)(void *);
virtual void prepareSync(qreal devicePixelRatio,
QRhiCommandBuffer *cb,
const QQuickGraphicsConfiguration &config);
virtual void beginNextFrame(QSGRenderer *renderer, const QSGRenderTarget &renderTarget,
RenderPassCallback mainPassRecordingStart,
RenderPassCallback mainPassRecordingEnd,
void *callbackUserData);
virtual void renderNextFrame(QSGRenderer *renderer) = 0;
virtual void endNextFrame(QSGRenderer *renderer);
virtual void endSync();
virtual void preprocess();
virtual void invalidateGlyphCaches();
virtual QSGDistanceFieldGlyphCache *distanceFieldGlyphCache(const QRawFont &font, int renderTypeQuality);
virtual QSGCurveGlyphAtlas *curveGlyphAtlas(const QRawFont &font);
QSGTexture *textureForFactory(QQuickTextureFactory *factory, QQuickWindow *window);
virtual QSGTexture *createTexture(const QImage &image, uint flags = CreateTexture_Alpha) const = 0;
virtual QSGRenderer *createRenderer(QSGRendererInterface::RenderMode renderMode = QSGRendererInterface::RenderMode2D) = 0;
virtual QSGTexture *compressedTextureForFactory(const QSGCompressedTextureFactory *) const;
virtual int maxTextureSize() const = 0;
void unregisterFontengineForCleanup(QFontEngine *engine);
void registerFontengineForCleanup(QFontEngine *engine);
virtual QRhi *rhi() const;
Q_SIGNALS:
void initialized();
void invalidated();
void releaseCachedResourcesRequested();
public Q_SLOTS:
void textureFactoryDestroyed(QObject *o);
protected:
struct FontKey {
FontKey(const QRawFont &font, int renderTypeQuality);
QFontEngine::FaceId faceId;
QFont::Style style;
int weight;
int renderTypeQuality;
QString familyName;
QString styleName;
};
friend bool operator==(const QSGRenderContext::FontKey &f1, const QSGRenderContext::FontKey &f2);
friend size_t qHash(const QSGRenderContext::FontKey &f, size_t seed);
// Hold m_sg with QPointer in the rare case it gets deleted before us.
QPointer<QSGContext> m_sg;
QMutex m_mutex;
QHash<QObject *, QSGTexture *> m_textures;
QSet<QSGTexture *> m_texturesToDelete;
QHash<FontKey, QSGDistanceFieldGlyphCache *> m_glyphCaches;
// References to font engines that are currently in use by native rendering glyph nodes
// and which must be kept alive as long as they are used in the render thread.
QHash<QFontEngine *, int> m_fontEnginesToClean;
};
inline bool operator ==(const QSGRenderContext::FontKey &f1, const QSGRenderContext::FontKey &f2)
{
return f1.faceId == f2.faceId
&& f1.style == f2.style
&& f1.weight == f2.weight
&& f1.renderTypeQuality == f2.renderTypeQuality
&& f1.familyName == f2.familyName
&& f1.styleName == f2.styleName;
}
inline size_t qHash(const QSGRenderContext::FontKey &f, size_t seed = 0)
{
return qHashMulti(seed, f.faceId, f.renderTypeQuality, f.familyName, f.styleName, f.style, f.weight);
}
QT_END_NAMESPACE
#endif // QSGCONTEXT_H
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