Remove QQuickOpenGLShaderEffect

This also removes QQuickUniformAnimator, which is not yet ported
to RHI (QTBUG-83976)

Task-number: QTBUG-83977
Change-Id: I3e656e6817ac991371b7f6557f050e122635d279
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

1 files changed, 0 insertions, 996 deletions

diff --git a/src/quick/items/qquickopenglshadereffect.cpp b/src/quick/items/qquickopenglshadereffect.cpp
deleted file mode 100644
index 280cdbf831..0000000000
--- a/src/quick/items/qquickopenglshadereffect.cpp
+++ /dev/null
@@ -1,996 +0,0 @@
-/****************************************************************************
-**
-** 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.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <private/qquickopenglshadereffect_p.h>
-
-#include <QtQuick/qsgmaterial.h>
-#include <QtQuick/private/qsgshadersourcebuilder_p.h>
-#include "qquickitem_p.h"
-
-#include <QtQuick/private/qsgcontext_p.h>
-#include <QtQuick/qsgtextureprovider.h>
-#include "qquickwindow.h"
-
-#include "qquickimage_p.h"
-#include "qquickshadereffectsource_p.h"
-#include "qquickshadereffectmesh_p.h"
-
-#include <QtQml/qqmlfile.h>
-#include <QtCore/qfile.h>
-#include <QtCore/qfileselector.h>
-#include <QtCore/qsignalmapper.h>
-
-QT_BEGIN_NAMESPACE
-
-// Note: this legacy ShaderEffect implementation is used only when running
-// directly with OpenGL. This is going to go away in the future (Qt 6?), since
-// the RHI path uses QQuickGenericShaderEffect always.
-
-namespace {
-
-    enum VariableQualifier {
-        AttributeQualifier,
-        UniformQualifier
-    };
-
-    inline bool qt_isalpha(char c)
-    {
-        char ch = c | 0x20;
-        return (ch >= 'a' && ch <= 'z') || c == '_';
-    }
-
-    inline bool qt_isalnum(char c)
-    {
-        return qt_isalpha(c) || (c >= '0' && c <= '9');
-    }
-
-    inline bool qt_isspace(char c)
-    {
-        return c == ' ' || (c >= 0x09 && c <= 0x0d);
-    }
-
-    // Returns -1 if not found, returns index to first character after the name if found.
-    int qt_search_for_variable(const char *s, int length, int index, VariableQualifier &decl,
-                               int &typeIndex, int &typeLength,
-                               int &nameIndex, int &nameLength,
-                               QQuickOpenGLShaderEffectCommon::Key::ShaderType shaderType)
-    {
-        enum Identifier {
-            QualifierIdentifier, // Base state
-            PrecisionIdentifier,
-            TypeIdentifier,
-            NameIdentifier
-        };
-        Identifier expected = QualifierIdentifier;
-        bool compilerDirectiveExpected = index == 0;
-
-        while (index < length) {
-            // Skip whitespace.
-            while (qt_isspace(s[index])) {
-                compilerDirectiveExpected |= s[index] == '\n';
-                ++index;
-            }
-
-            if (qt_isalpha(s[index])) {
-                // Read identifier.
-                int idIndex = index;
-                ++index;
-                while (qt_isalnum(s[index]))
-                    ++index;
-                int idLength = index - idIndex;
-
-                const int attrLen = sizeof("attribute") - 1;
-                const int inLen = sizeof("in") - 1;
-                const int uniLen = sizeof("uniform") - 1;
-                const int loLen = sizeof("lowp") - 1;
-                const int medLen = sizeof("mediump") - 1;
-                const int hiLen = sizeof("highp") - 1;
-
-                switch (expected) {
-                case QualifierIdentifier:
-                    if (idLength == attrLen && qstrncmp("attribute", s + idIndex, attrLen) == 0) {
-                        decl = AttributeQualifier;
-                        expected = PrecisionIdentifier;
-                    } else if (shaderType == QQuickOpenGLShaderEffectCommon::Key::VertexShader
-                               && idLength == inLen && qstrncmp("in", s + idIndex, inLen) == 0) {
-                        decl = AttributeQualifier;
-                        expected = PrecisionIdentifier;
-                    } else if (idLength == uniLen && qstrncmp("uniform", s + idIndex, uniLen) == 0) {
-                        decl = UniformQualifier;
-                        expected = PrecisionIdentifier;
-                    }
-                    break;
-                case PrecisionIdentifier:
-                    if ((idLength == loLen && qstrncmp("lowp", s + idIndex, loLen) == 0)
-                            || (idLength == medLen && qstrncmp("mediump", s + idIndex, medLen) == 0)
-                            || (idLength == hiLen && qstrncmp("highp", s + idIndex, hiLen) == 0))
-                    {
-                        expected = TypeIdentifier;
-                        break;
-                    }
-                    Q_FALLTHROUGH();
-                case TypeIdentifier:
-                    typeIndex = idIndex;
-                    typeLength = idLength;
-                    expected = NameIdentifier;
-                    break;
-                case NameIdentifier:
-                    nameIndex = idIndex;
-                    nameLength = idLength;
-                    return index; // Attribute or uniform declaration found. Return result.
-                default:
-                    break;
-                }
-            } else if (s[index] == '#' && compilerDirectiveExpected) {
-                // Skip compiler directives.
-                ++index;
-                while (index < length && (s[index] != '\n' || s[index - 1] == '\\'))
-                    ++index;
-            } else if (s[index] == '/' && s[index + 1] == '/') {
-                // Skip comments.
-                index += 2;
-                while (index < length && s[index] != '\n')
-                    ++index;
-            } else if (s[index] == '/' && s[index + 1] == '*') {
-                // Skip comments.
-                index += 2;
-                while (index < length && (s[index] != '*' || s[index + 1] != '/'))
-                    ++index;
-                if (index < length)
-                    index += 2; // Skip star-slash.
-            } else {
-                expected = QualifierIdentifier;
-                ++index;
-            }
-            compilerDirectiveExpected = false;
-        }
-        return -1;
-    }
-}
-
-namespace QtPrivate {
-class MappedSlotObject: public QtPrivate::QSlotObjectBase
-{
-public:
-    typedef std::function<void()> PropChangedFunc;
-
-    explicit MappedSlotObject(PropChangedFunc f)
-        : QSlotObjectBase(&impl), _signalIndex(-1), func(std::move(f))
-    { ref(); }
-
-    void setSignalIndex(int idx) { _signalIndex = idx; }
-    int signalIndex() const { return _signalIndex; }
-
-private:
-    int _signalIndex;
-    PropChangedFunc func;
-
-    static void impl(int which, QSlotObjectBase *this_, QObject *, void **a, bool *ret)
-    {
-        auto thiz = static_cast<MappedSlotObject*>(this_);
-        switch (which) {
-        case Destroy:
-            delete thiz;
-            break;
-        case Call:
-            thiz->func();
-            break;
-        case Compare:
-            *ret = thiz == reinterpret_cast<MappedSlotObject *>(a[0]);
-            break;
-        case NumOperations: ;
-        }
-    }
-};
-}
-
-QQuickOpenGLShaderEffectCommon::~QQuickOpenGLShaderEffectCommon()
-{
-    for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType)
-        clearSignalMappers(shaderType);
-}
-
-void QQuickOpenGLShaderEffectCommon::disconnectPropertySignals(QQuickItem *item, Key::ShaderType shaderType)
-{
-    for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-        if (signalMappers[shaderType].at(i) == 0)
-            continue;
-        const UniformData &d = uniformData[shaderType].at(i);
-        auto mapper = signalMappers[shaderType].at(i);
-        void *a = mapper;
-        QObjectPrivate::disconnect(item, mapper->signalIndex(), &a);
-        if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
-            QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-            if (source) {
-                if (item->window())
-                    QQuickItemPrivate::get(source)->derefWindow();
-                QObject::disconnect(source, SIGNAL(destroyed(QObject*)), host, SLOT(sourceDestroyed(QObject*)));
-            }
-        }
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::connectPropertySignals(QQuickItem *item,
-                                                            const QMetaObject *itemMetaObject,
-                                                            Key::ShaderType shaderType)
-{
-    auto engine = qmlEngine(item);
-    if (!engine)
-        return;
-
-    QQmlPropertyCache *propCache = QQmlData::ensurePropertyCache(engine, item);
-    for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-        if (signalMappers[shaderType].at(i) == 0)
-            continue;
-        const UniformData &d = uniformData[shaderType].at(i);
-        QQmlPropertyData *pd = propCache->property(QString::fromUtf8(d.name), nullptr, nullptr);
-        if (pd && !pd->isFunction()) {
-            if (pd->notifyIndex() == -1) {
-                qWarning("QQuickOpenGLShaderEffect: property '%s' does not have notification method!", d.name.constData());
-            } else {
-                auto *mapper = signalMappers[shaderType].at(i);
-                mapper->setSignalIndex(itemMetaObject->property(d.propertyIndex).notifySignal().methodIndex());
-                Q_ASSERT(item->metaObject() == itemMetaObject);
-                bool ok = QObjectPrivate::connectImpl(item, pd->notifyIndex(), item, nullptr, mapper,
-                                                      Qt::AutoConnection, nullptr, itemMetaObject);
-                if (!ok)
-                    qWarning() << "Failed to connect to property" << itemMetaObject->property(d.propertyIndex).name()
-                               << "(" << d.propertyIndex << ", signal index" << pd->notifyIndex()
-                               << ") of item" << item;
-            }
-        } else {
-            // If the source is set via a dynamic property, like the layer is, then we need this
-            // check to disable the warning.
-            if (!item->property(d.name).isValid())
-                qWarning("QQuickOpenGLShaderEffect: '%s' does not have a matching property!", d.name.constData());
-        }
-
-        if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
-            QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-            if (source) {
-                if (item->window())
-                    QQuickItemPrivate::get(source)->refWindow(item->window());
-                QObject::connect(source, SIGNAL(destroyed(QObject*)), host, SLOT(sourceDestroyed(QObject*)));
-            }
-        }
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::updateParseLog(bool ignoreAttributes)
-{
-    parseLog.clear();
-    if (!ignoreAttributes) {
-        if (!attributes.contains(qtPositionAttributeName())) {
-            parseLog += QLatin1String("Warning: Missing reference to \'")
-                        + QLatin1String(qtPositionAttributeName())
-                        + QLatin1String("\'.\n");
-        }
-        if (!attributes.contains(qtTexCoordAttributeName())) {
-            parseLog += QLatin1String("Warning: Missing reference to \'")
-                        + QLatin1String(qtTexCoordAttributeName())
-                        + QLatin1String("\'.\n");
-        }
-    }
-    bool respectsMatrix = false;
-    bool respectsOpacity = false;
-    for (int i = 0; i < uniformData[Key::VertexShader].size(); ++i)
-        respectsMatrix |= uniformData[Key::VertexShader].at(i).specialType == UniformData::Matrix;
-    for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-        for (int i = 0; i < uniformData[shaderType].size(); ++i)
-            respectsOpacity |= uniformData[shaderType].at(i).specialType == UniformData::Opacity;
-    }
-    if (!respectsMatrix)
-        parseLog += QLatin1String("Warning: Vertex shader is missing reference to \'qt_Matrix\'.\n");
-    if (!respectsOpacity)
-        parseLog += QLatin1String("Warning: Shaders are missing reference to \'qt_Opacity\'.\n");
-}
-
-void QQuickOpenGLShaderEffectCommon::lookThroughShaderCode(QQuickItem *item,
-                                                           const QMetaObject *itemMetaObject,
-                                                           Key::ShaderType shaderType,
-                                                           const QByteArray &code)
-{
-    auto engine = qmlEngine(item);
-    QQmlPropertyCache *propCache = (engine) ? QQmlData::ensurePropertyCache(engine, item) : nullptr;
-    int index = 0;
-    int typeIndex = -1;
-    int typeLength = 0;
-    int nameIndex = -1;
-    int nameLength = 0;
-    const char *s = code.constData();
-    VariableQualifier decl = AttributeQualifier;
-    while ((index = qt_search_for_variable(s, code.size(), index, decl, typeIndex, typeLength,
-                                           nameIndex, nameLength, shaderType)) != -1)
-    {
-        if (decl == AttributeQualifier) {
-            if (shaderType == Key::VertexShader)
-                attributes.append(QByteArray(s + nameIndex, nameLength));
-        } else {
-            Q_ASSERT(decl == UniformQualifier);
-
-            const int sampLen = sizeof("sampler2D") - 1;
-            const int sampExtLen = sizeof("samplerExternalOES") - 1;
-            const int opLen = sizeof("qt_Opacity") - 1;
-            const int matLen = sizeof("qt_Matrix") - 1;
-            const int srLen = sizeof("qt_SubRect_") - 1;
-
-            UniformData d;
-            QtPrivate::MappedSlotObject *mapper = nullptr;
-            d.name = QByteArray(s + nameIndex, nameLength);
-            if (nameLength == opLen && qstrncmp("qt_Opacity", s + nameIndex, opLen) == 0) {
-                d.specialType = UniformData::Opacity;
-            } else if (nameLength == matLen && qstrncmp("qt_Matrix", s + nameIndex, matLen) == 0) {
-                d.specialType = UniformData::Matrix;
-            } else if (nameLength > srLen && qstrncmp("qt_SubRect_", s + nameIndex, srLen) == 0) {
-                d.specialType = UniformData::SubRect;
-            } else {
-                if (propCache) {
-                    if (QQmlPropertyData *pd = propCache->property(QString::fromUtf8(d.name), nullptr, nullptr)) {
-                        if (!pd->isFunction())
-                            d.propertyIndex = pd->coreIndex();
-                    }
-                }
-                const int mappedId = uniformData[shaderType].size() | (shaderType << 16);
-                mapper = new QtPrivate::MappedSlotObject([this, mappedId](){
-                    this->mappedPropertyChanged(mappedId);
-                });
-                if (typeLength == sampLen && qstrncmp("sampler2D", s + typeIndex, sampLen) == 0)
-                    d.specialType = UniformData::Sampler;
-                else if (typeLength == sampExtLen && qstrncmp("samplerExternalOES", s + typeIndex, sampExtLen) == 0)
-                    d.specialType = UniformData::SamplerExternal;
-                else
-                    d.specialType = UniformData::None;
-                d.setValueFromProperty(item, itemMetaObject);
-            }
-            uniformData[shaderType].append(d);
-            signalMappers[shaderType].append(mapper);
-        }
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::updateShader(QQuickItem *item,
-                                                  const QMetaObject *itemMetaObject,
-                                                  Key::ShaderType shaderType)
-{
-    disconnectPropertySignals(item, shaderType);
-    uniformData[shaderType].clear();
-    clearSignalMappers(shaderType);
-    if (shaderType == Key::VertexShader)
-        attributes.clear();
-
-    // A qrc or file URL means the shader source is to be read from the specified file.
-    QUrl srcUrl(QString::fromUtf8(source.sourceCode[shaderType]));
-    if (!srcUrl.scheme().compare(QLatin1String("qrc"), Qt::CaseInsensitive) || srcUrl.isLocalFile()) {
-        if (!fileSelector) {
-            fileSelector = new QFileSelector(item);
-            // There may not be an OpenGL context accessible here. So rely on
-            // the window's requestedFormat().
-            if (item->window()
-                    && item->window()->requestedFormat().profile() == QSurfaceFormat::CoreProfile) {
-                fileSelector->setExtraSelectors(QStringList() << QStringLiteral("glslcore"));
-            }
-        }
-        const QString fn = fileSelector->select(QQmlFile::urlToLocalFileOrQrc(srcUrl));
-        QFile f(fn);
-        if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
-            source.sourceCode[shaderType] = f.readAll();
-            f.close();
-        } else {
-            qWarning("ShaderEffect: Failed to read %s", qPrintable(fn));
-            source.sourceCode[shaderType] = QByteArray();
-        }
-    }
-
-    const QByteArray &code = source.sourceCode[shaderType];
-    if (code.isEmpty()) {
-        // Optimize for default code.
-        if (shaderType == Key::VertexShader) {
-            attributes.append(QByteArray(qtPositionAttributeName()));
-            attributes.append(QByteArray(qtTexCoordAttributeName()));
-            UniformData d;
-            d.name = "qt_Matrix";
-            d.specialType = UniformData::Matrix;
-            uniformData[Key::VertexShader].append(d);
-            signalMappers[Key::VertexShader].append(0);
-        } else if (shaderType == Key::FragmentShader) {
-            UniformData d;
-            d.name = "qt_Opacity";
-            d.specialType = UniformData::Opacity;
-            uniformData[Key::FragmentShader].append(d);
-            signalMappers[Key::FragmentShader].append(0);
-            auto mapper = new QtPrivate::MappedSlotObject([this](){
-                mappedPropertyChanged(1 | (Key::FragmentShader << 16));
-            });
-            const char *sourceName = "source";
-            d.name = sourceName;
-            d.setValueFromProperty(item, itemMetaObject);
-            d.specialType = UniformData::Sampler;
-            uniformData[Key::FragmentShader].append(d);
-            signalMappers[Key::FragmentShader].append(mapper);
-        }
-    } else {
-        lookThroughShaderCode(item, itemMetaObject, shaderType, code);
-    }
-
-    connectPropertySignals(item, itemMetaObject, shaderType);
-}
-
-void QQuickOpenGLShaderEffectCommon::updateMaterial(QQuickOpenGLShaderEffectNode *node,
-                                              QQuickOpenGLShaderEffectMaterial *material,
-                                              bool updateUniforms, bool updateUniformValues,
-                                              bool updateTextureProviders)
-{
-    if (updateUniforms) {
-        for (int i = 0; i < material->textureProviders.size(); ++i) {
-            QSGTextureProvider *t = material->textureProviders.at(i);
-            if (t) {
-                QObject::disconnect(t, SIGNAL(textureChanged()), node, SLOT(markDirtyTexture()));
-                QObject::disconnect(t, SIGNAL(destroyed(QObject*)), node, SLOT(textureProviderDestroyed(QObject*)));
-            }
-        }
-
-        // First make room in the textureProviders array. Set to proper value further down.
-        int textureProviderCount = 0;
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-                if (uniformData[shaderType].at(i).specialType == UniformData::Sampler ||
-                        uniformData[shaderType].at(i).specialType == UniformData::SamplerExternal)
-                    ++textureProviderCount;
-            }
-            material->uniforms[shaderType] = uniformData[shaderType];
-        }
-        material->textureProviders.fill(0, textureProviderCount);
-        updateUniformValues = false;
-        updateTextureProviders = true;
-    }
-
-    if (updateUniformValues) {
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            Q_ASSERT(uniformData[shaderType].size() == material->uniforms[shaderType].size());
-            for (int i = 0; i < uniformData[shaderType].size(); ++i)
-                material->uniforms[shaderType][i].value = uniformData[shaderType].at(i).value;
-        }
-    }
-
-    if (updateTextureProviders) {
-        int index = 0;
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-                const UniformData &d = uniformData[shaderType].at(i);
-                if (d.specialType != UniformData::Sampler && d.specialType != UniformData::SamplerExternal)
-                    continue;
-                QSGTextureProvider *oldProvider = material->textureProviders.at(index);
-                QSGTextureProvider *newProvider = nullptr;
-                QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-                if (source && source->isTextureProvider())
-                    newProvider = source->textureProvider();
-                if (newProvider != oldProvider) {
-                    if (oldProvider) {
-                        QObject::disconnect(oldProvider, SIGNAL(textureChanged()), node, SLOT(markDirtyTexture()));
-                        QObject::disconnect(oldProvider, SIGNAL(destroyed(QObject*)), node, SLOT(textureProviderDestroyed(QObject*)));
-                    }
-                    if (newProvider) {
-                        Q_ASSERT_X(newProvider->thread() == QThread::currentThread(),
-                                   "QQuickOpenGLShaderEffect::updatePaintNode",
-                                   "Texture provider must belong to the rendering thread");
-                        QObject::connect(newProvider, SIGNAL(textureChanged()), node, SLOT(markDirtyTexture()));
-                        QObject::connect(newProvider, SIGNAL(destroyed(QObject*)), node, SLOT(textureProviderDestroyed(QObject*)));
-                    } else {
-                        const char *typeName = source ? source->metaObject()->className() : d.value.typeName();
-                        qWarning("ShaderEffect: Property '%s' is not assigned a valid texture provider (%s).",
-                                 d.name.constData(), typeName);
-                    }
-                    material->textureProviders[index] = newProvider;
-                }
-                ++index;
-            }
-        }
-        Q_ASSERT(index == material->textureProviders.size());
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::updateWindow(QQuickWindow *window)
-{
-    // See comment in QQuickOpenGLShaderEffectCommon::propertyChanged().
-    if (window) {
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-                const UniformData &d = uniformData[shaderType].at(i);
-                if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
-                    QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-                    if (source)
-                        QQuickItemPrivate::get(source)->refWindow(window);
-                }
-            }
-        }
-    } else {
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-                const UniformData &d = uniformData[shaderType].at(i);
-                if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
-                    QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-                    if (source)
-                        QQuickItemPrivate::get(source)->derefWindow();
-                }
-            }
-        }
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::sourceDestroyed(QObject *object)
-{
-    for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-        for (int i = 0; i < uniformData[shaderType].size(); ++i) {
-            UniformData &d = uniformData[shaderType][i];
-            if ((d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) && d.value.canConvert<QObject *>()) {
-                if (qvariant_cast<QObject *>(d.value) == object)
-                    d.value = QVariant();
-            }
-        }
-    }
-}
-
-static bool qquick_uniqueInUniformData(QQuickItem *source, const QVector<QQuickOpenGLShaderEffectMaterial::UniformData> *uniformData, int typeToSkip, int indexToSkip)
-{
-    for (int s=0; s<QQuickOpenGLShaderEffectMaterialKey::ShaderTypeCount; ++s) {
-        for (int i=0; i<uniformData[s].size(); ++i) {
-            if (s == typeToSkip && i == indexToSkip)
-                continue;
-            const QQuickOpenGLShaderEffectMaterial::UniformData &d = uniformData[s][i];
-            if ((d.specialType == QQuickOpenGLShaderEffectMaterial::UniformData::Sampler || d.specialType == QQuickOpenGLShaderEffectMaterial::UniformData::SamplerExternal) && qvariant_cast<QObject *>(d.value) == source)
-                return false;
-        }
-    }
-    return true;
-}
-
-void QQuickOpenGLShaderEffectCommon::propertyChanged(QQuickItem *item,
-                                                     const QMetaObject *itemMetaObject,
-                                                     int mappedId, bool *textureProviderChanged)
-{
-    Key::ShaderType shaderType = Key::ShaderType(mappedId >> 16);
-    int index = mappedId & 0xffff;
-    UniformData &d = uniformData[shaderType][index];
-    if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
-        QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-        if (source) {
-            if (item->window())
-                QQuickItemPrivate::get(source)->derefWindow();
-
-            // QObject::disconnect() will disconnect all matching connections. If the same
-            // source has been attached to two separate samplers, then changing one of them
-            // would trigger both to be disconnected. Without the connection we'll end up
-            // with a dangling pointer in the uniformData.
-            if (qquick_uniqueInUniformData(source, uniformData, shaderType, index))
-                QObject::disconnect(source, SIGNAL(destroyed(QObject*)), host, SLOT(sourceDestroyed(QObject*)));
-        }
-
-        d.setValueFromProperty(item, itemMetaObject);
-
-        source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
-        if (source) {
-            // 'source' needs a window to get a scene graph node. It usually gets one through its
-            // parent, but if the source item is "inline" rather than a reference -- i.e.
-            // "property variant source: Image { }" instead of "property variant source: foo" -- it
-            // will not get a parent. In those cases, 'source' should get the window from 'item'.
-            if (item->window())
-                QQuickItemPrivate::get(source)->refWindow(item->window());
-            QObject::connect(source, SIGNAL(destroyed(QObject*)), host, SLOT(sourceDestroyed(QObject*)));
-        }
-        if (textureProviderChanged)
-            *textureProviderChanged = true;
-    } else {
-        d.setValueFromProperty(item, itemMetaObject);
-        if (textureProviderChanged)
-            *textureProviderChanged = false;
-    }
-}
-
-void QQuickOpenGLShaderEffectCommon::clearSignalMappers(int shader)
-{
-    for (auto mapper : qAsConst(signalMappers[shader])) {
-        if (mapper)
-            mapper->destroyIfLastRef();
-    }
-    signalMappers[shader].clear();
-}
-
-QQuickOpenGLShaderEffect::QQuickOpenGLShaderEffect(QQuickShaderEffect *item, QObject *parent)
-    : QObject(parent)
-    , m_item(item)
-    , m_itemMetaObject(nullptr)
-    , m_meshResolution(1, 1)
-    , m_mesh(nullptr)
-    , m_cullMode(QQuickShaderEffect::NoCulling)
-    , m_status(QQuickShaderEffect::Uncompiled)
-    , m_common(this, [this](int mappedId){this->propertyChanged(mappedId);})
-    , m_blending(true)
-    , m_dirtyUniforms(true)
-    , m_dirtyUniformValues(true)
-    , m_dirtyTextureProviders(true)
-    , m_dirtyProgram(true)
-    , m_dirtyParseLog(true)
-    , m_dirtyMesh(true)
-    , m_dirtyGeometry(true)
-    , m_customVertexShader(false)
-    , m_supportsAtlasTextures(false)
-    , m_vertNeedsUpdate(true)
-    , m_fragNeedsUpdate(true)
-{
-}
-
-QQuickOpenGLShaderEffect::~QQuickOpenGLShaderEffect()
-{
-    for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType)
-        m_common.disconnectPropertySignals(m_item, Key::ShaderType(shaderType));
-}
-
-void QQuickOpenGLShaderEffect::setFragmentShader(const QByteArray &code)
-{
-    if (m_common.source.sourceCode[Key::FragmentShader].constData() == code.constData())
-        return;
-    m_common.source.sourceCode[Key::FragmentShader] = code;
-    m_dirtyProgram = true;
-    m_dirtyParseLog = true;
-
-    m_fragNeedsUpdate = true;
-    if (m_item->isComponentComplete())
-        maybeUpdateShaders();
-
-    m_item->update();
-    if (m_status != QQuickShaderEffect::Uncompiled) {
-        m_status = QQuickShaderEffect::Uncompiled;
-        emit m_item->statusChanged();
-    }
-    emit m_item->fragmentShaderChanged();
-}
-
-void QQuickOpenGLShaderEffect::setVertexShader(const QByteArray &code)
-{
-    if (m_common.source.sourceCode[Key::VertexShader].constData() == code.constData())
-        return;
-    m_common.source.sourceCode[Key::VertexShader] = code;
-    m_dirtyProgram = true;
-    m_dirtyParseLog = true;
-    m_customVertexShader = true;
-
-    m_vertNeedsUpdate = true;
-    if (m_item->isComponentComplete())
-        maybeUpdateShaders();
-
-    m_item->update();
-    if (m_status != QQuickShaderEffect::Uncompiled) {
-        m_status = QQuickShaderEffect::Uncompiled;
-        emit m_item->statusChanged();
-    }
-    emit m_item->vertexShaderChanged();
-}
-
-void QQuickOpenGLShaderEffect::setBlending(bool enable)
-{
-    if (blending() == enable)
-        return;
-
-    m_blending = enable;
-    m_item->update();
-
-    emit m_item->blendingChanged();
-}
-
-QVariant QQuickOpenGLShaderEffect::mesh() const
-{
-    return m_mesh ? QVariant::fromValue(static_cast<QObject *>(m_mesh))
-                  : QVariant::fromValue(m_meshResolution);
-}
-
-void QQuickOpenGLShaderEffect::setMesh(const QVariant &mesh)
-{
-    QQuickShaderEffectMesh *newMesh = qobject_cast<QQuickShaderEffectMesh *>(qvariant_cast<QObject *>(mesh));
-    if (newMesh && newMesh == m_mesh)
-        return;
-    if (m_mesh)
-        disconnect(m_mesh, SIGNAL(geometryChanged()), this, nullptr);
-    m_mesh = newMesh;
-    if (m_mesh) {
-        connect(m_mesh, SIGNAL(geometryChanged()), this, SLOT(updateGeometry()));
-    } else {
-        if (mesh.canConvert<QSize>()) {
-            m_meshResolution = mesh.toSize();
-        } else {
-            QList<QByteArray> res = mesh.toByteArray().split('x');
-            bool ok = res.size() == 2;
-            if (ok) {
-                int w = res.at(0).toInt(&ok);
-                if (ok) {
-                    int h = res.at(1).toInt(&ok);
-                    if (ok)
-                        m_meshResolution = QSize(w, h);
-                }
-            }
-            if (!ok)
-                qWarning("ShaderEffect: mesh property must be size or object deriving from QQuickShaderEffectMesh.");
-        }
-        m_defaultMesh.setResolution(m_meshResolution);
-    }
-
-    m_dirtyMesh = true;
-    m_dirtyParseLog = true;
-    m_item->update();
-    emit m_item->meshChanged();
-}
-
-void QQuickOpenGLShaderEffect::setCullMode(QQuickShaderEffect::CullMode face)
-{
-    if (face == m_cullMode)
-        return;
-    m_cullMode = face;
-    m_item->update();
-    emit m_item->cullModeChanged();
-}
-
-void QQuickOpenGLShaderEffect::setSupportsAtlasTextures(bool supports)
-{
-    if (supports == m_supportsAtlasTextures)
-        return;
-    m_supportsAtlasTextures = supports;
-    updateGeometry();
-    emit m_item->supportsAtlasTexturesChanged();
-}
-
-QString QQuickOpenGLShaderEffect::parseLog()
-{
-    maybeUpdateShaders(true);
-
-    if (m_dirtyParseLog) {
-        m_common.updateParseLog(m_mesh != nullptr);
-        m_dirtyParseLog = false;
-    }
-    return m_common.parseLog;
-}
-
-void QQuickOpenGLShaderEffect::handleEvent(QEvent *event)
-{
-    if (event->type() == QEvent::DynamicPropertyChange) {
-        QDynamicPropertyChangeEvent *e = static_cast<QDynamicPropertyChangeEvent *>(event);
-        for (int shaderType = 0; shaderType < Key::ShaderTypeCount; ++shaderType) {
-            for (int i = 0; i < m_common.uniformData[shaderType].size(); ++i) {
-                if (m_common.uniformData[shaderType].at(i).name == e->propertyName()) {
-                    bool textureProviderChanged;
-                    m_common.propertyChanged(m_item, m_itemMetaObject,
-                                             (shaderType << 16) | i, &textureProviderChanged);
-                    m_dirtyTextureProviders |= textureProviderChanged;
-                    m_dirtyUniformValues = true;
-                    m_item->update();
-                }
-            }
-        }
-    }
-}
-
-void QQuickOpenGLShaderEffect::updateGeometry()
-{
-    m_dirtyGeometry = true;
-    m_item->update();
-}
-
-void QQuickOpenGLShaderEffect::updateGeometryIfAtlased()
-{
-    if (m_supportsAtlasTextures)
-        updateGeometry();
-}
-
-void QQuickOpenGLShaderEffect::updateLogAndStatus(const QString &log, int status)
-{
-    m_log = parseLog() + log;
-    m_status = QQuickShaderEffect::Status(status);
-    emit m_item->logChanged();
-    emit m_item->statusChanged();
-}
-
-void QQuickOpenGLShaderEffect::sourceDestroyed(QObject *object)
-{
-    m_common.sourceDestroyed(object);
-}
-
-void QQuickOpenGLShaderEffect::propertyChanged(int mappedId)
-{
-    bool textureProviderChanged;
-    m_common.propertyChanged(m_item, m_itemMetaObject, mappedId, &textureProviderChanged);
-    m_dirtyTextureProviders |= textureProviderChanged;
-    m_dirtyUniformValues = true;
-    m_item->update();
-}
-
-void QQuickOpenGLShaderEffect::handleGeometryChanged(const QRectF &, const QRectF &)
-{
-    m_dirtyGeometry = true;
-}
-
-QSGNode *QQuickOpenGLShaderEffect::handleUpdatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
-{
-    QQuickOpenGLShaderEffectNode *node = static_cast<QQuickOpenGLShaderEffectNode *>(oldNode);
-
-    // In the case of zero-size or a bad vertex shader, don't try to create a node...
-    if (m_common.attributes.isEmpty() || m_item->width() <= 0 || m_item->height() <= 0) {
-        if (node)
-            delete node;
-        return nullptr;
-    }
-
-    if (!node) {
-        node = new QQuickOpenGLShaderEffectNode;
-        node->setMaterial(new QQuickOpenGLShaderEffectMaterial(node));
-        node->setFlag(QSGNode::OwnsMaterial, true);
-        m_dirtyProgram = true;
-        m_dirtyUniforms = true;
-        m_dirtyGeometry = true;
-        connect(node, SIGNAL(logAndStatusChanged(QString,int)), this, SLOT(updateLogAndStatus(QString,int)));
-        connect(node, &QQuickOpenGLShaderEffectNode::dirtyTexture,
-                this, &QQuickOpenGLShaderEffect::updateGeometryIfAtlased);
-    }
-
-    QQuickOpenGLShaderEffectMaterial *material = static_cast<QQuickOpenGLShaderEffectMaterial *>(node->material());
-
-    // Update blending
-    if (bool(material->flags() & QSGMaterial::Blending) != m_blending) {
-        material->setFlag(QSGMaterial::Blending, m_blending);
-        node->markDirty(QSGNode::DirtyMaterial);
-    }
-
-    if (int(material->cullMode) != int(m_cullMode)) {
-        material->cullMode = QQuickShaderEffect::CullMode(m_cullMode);
-        node->markDirty(QSGNode::DirtyMaterial);
-    }
-
-    if (m_dirtyProgram) {
-        Key s = m_common.source;
-        QSGShaderSourceBuilder builder;
-        if (s.sourceCode[Key::FragmentShader].isEmpty()) {
-            builder.appendSourceFile(QStringLiteral(":/qt-project.org/items/shaders/shadereffect.frag"));
-            s.sourceCode[Key::FragmentShader] = builder.source();
-            builder.clear();
-        }
-        if (s.sourceCode[Key::VertexShader].isEmpty()) {
-            builder.appendSourceFile(QStringLiteral(":/qt-project.org/items/shaders/shadereffect.vert"));
-            s.sourceCode[Key::VertexShader] = builder.source();
-        }
-
-        material->setProgramSource(s);
-        material->attributes = m_common.attributes;
-        node->markDirty(QSGNode::DirtyMaterial);
-        m_dirtyProgram = false;
-        m_dirtyUniforms = true;
-    }
-
-    if (m_dirtyUniforms || m_dirtyUniformValues || m_dirtyTextureProviders) {
-        m_common.updateMaterial(node, material, m_dirtyUniforms, m_dirtyUniformValues,
-                                m_dirtyTextureProviders);
-        node->markDirty(QSGNode::DirtyMaterial);
-        m_dirtyUniforms = m_dirtyUniformValues = m_dirtyTextureProviders = false;
-    }
-
-    QRectF srcRect(0, 0, 1, 1);
-    bool geometryUsesTextureSubRect = false;
-    if (m_supportsAtlasTextures && material->textureProviders.size() == 1) {
-        QSGTextureProvider *provider = material->textureProviders.at(0);
-        if (provider && provider->texture()) {
-            srcRect = provider->texture()->normalizedTextureSubRect();
-            geometryUsesTextureSubRect = true;
-        }
-    }
-
-    if (bool(material->flags() & QSGMaterial::RequiresFullMatrix) != m_customVertexShader) {
-        material->setFlag(QSGMaterial::RequiresFullMatrix, m_customVertexShader);
-        node->markDirty(QSGNode::DirtyMaterial);
-    }
-
-    if (material->geometryUsesTextureSubRect != geometryUsesTextureSubRect) {
-        material->geometryUsesTextureSubRect = geometryUsesTextureSubRect;
-        node->markDirty(QSGNode::DirtyMaterial);
-    }
-
-    if (m_dirtyMesh) {
-        node->setGeometry(nullptr);
-        m_dirtyMesh = false;
-        m_dirtyGeometry = true;
-    }
-
-    if (m_dirtyGeometry) {
-        node->setFlag(QSGNode::OwnsGeometry, false);
-        QSGGeometry *geometry = node->geometry();
-        QRectF rect(0, 0, m_item->width(), m_item->height());
-        QQuickShaderEffectMesh *mesh = m_mesh ? m_mesh : &m_defaultMesh;
-
-        int posIndex = 0;
-        if (!mesh->validateAttributes(m_common.attributes, &posIndex)) {
-            QString log = mesh->log();
-            if (!log.isNull()) {
-                m_log = parseLog() + QLatin1String("*** Mesh ***\n") + log;
-                m_status = QQuickShaderEffect::Error;
-                emit m_item->logChanged();
-                emit m_item->statusChanged();
-            }
-            delete node;
-            return nullptr;
-        }
-
-        geometry = mesh->updateGeometry(geometry, m_common.attributes.count(), posIndex, srcRect, rect);
-
-        node->setGeometry(geometry);
-        node->setFlag(QSGNode::OwnsGeometry, true);
-
-        m_dirtyGeometry = false;
-    }
-
-    return node;
-}
-
-void QQuickOpenGLShaderEffect::maybeUpdateShaders(bool force)
-{
-    if (!m_itemMetaObject)
-        m_itemMetaObject = m_item->metaObject();
-
-    // Defer processing if a window is not yet associated with the item. This
-    // is because the actual scenegraph backend is not known so conditions
-    // based on GraphicsInfo.shaderType and similar evaluate to wrong results.
-    if (!m_item->window() && !force) {
-        m_item->polish();
-        return;
-    }
-
-    if (m_vertNeedsUpdate) {
-        m_vertNeedsUpdate = false;
-        m_common.updateShader(m_item, m_itemMetaObject, Key::VertexShader);
-    }
-
-    if (m_fragNeedsUpdate) {
-        m_fragNeedsUpdate = false;
-        m_common.updateShader(m_item, m_itemMetaObject, Key::FragmentShader);
-    }
-}
-
-void QQuickOpenGLShaderEffect::handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value)
-{
-    if (change == QQuickItem::ItemSceneChange)
-        m_common.updateWindow(value.window);
-}
-
-QT_END_NAMESPACE
-
-#include "moc_qquickopenglshadereffect_p.cpp"