diff options
Diffstat (limited to 'src/quick/items/qquickshadereffect.cpp')
| -rw-r--r-- | src/quick/items/qquickshadereffect.cpp | 780 |
1 files changed, 778 insertions, 2 deletions
diff --git a/src/quick/items/qquickshadereffect.cpp b/src/quick/items/qquickshadereffect.cpp index 7a37410faa..c4c48fdea5 100644 --- a/src/quick/items/qquickshadereffect.cpp +++ b/src/quick/items/qquickshadereffect.cpp @@ -40,11 +40,14 @@ #include <private/qquickshadereffect_p.h> #include <private/qsgcontextplugin_p.h> #include <private/qquickitem_p.h> -#include <private/qquickgenericshadereffect_p.h> #if QT_CONFIG(opengl) /* || QT_CONFIG(vulkan) || defined(Q_OS_WIN) || defined(Q_OS_DARWIN) */ #include <private/qsgrhisupport_p.h> #endif +#include <private/qquickwindow_p.h> +#include <private/qquickitem_p.h> +#include "qquickshadereffectmesh_p.h" + QT_BEGIN_NAMESPACE /*! @@ -284,6 +287,128 @@ QT_BEGIN_NAMESPACE \sa {Item Layers} */ + +namespace QtPrivate { +class EffectSlotMapper: public QtPrivate::QSlotObjectBase +{ +public: + typedef std::function<void()> PropChangedFunc; + + explicit EffectSlotMapper(PropChangedFunc func) + : QSlotObjectBase(&impl), _signalIndex(-1), func(func) + { 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<EffectSlotMapper*>(this_); + switch (which) { + case Destroy: + delete thiz; + break; + case Call: + thiz->func(); + break; + case Compare: + *ret = thiz == reinterpret_cast<EffectSlotMapper *>(a[0]); + break; + case NumOperations: ; + } + } +}; +} // namespace QtPrivate + +class QQuickShaderEffectImpl : public QObject +{ + Q_OBJECT + +public: + QQuickShaderEffectImpl(QQuickShaderEffect *item); + ~QQuickShaderEffectImpl(); + + QByteArray fragmentShader() const { return m_fragShader; } + void setFragmentShader(const QByteArray &src); + + QByteArray vertexShader() const { return m_vertShader; } + void setVertexShader(const QByteArray &src); + + bool blending() const { return m_blending; } + void setBlending(bool enable); + + QVariant mesh() const; + void setMesh(const QVariant &mesh); + + QQuickShaderEffect::CullMode cullMode() const { return m_cullMode; } + void setCullMode(QQuickShaderEffect::CullMode face); + + QString log() const; + QQuickShaderEffect::Status status() const; + + bool supportsAtlasTextures() const { return m_supportsAtlasTextures; } + void setSupportsAtlasTextures(bool supports); + + QString parseLog(); + + void handleEvent(QEvent *); + void handleGeometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry); + QSGNode *handleUpdatePaintNode(QSGNode *, QQuickItem::UpdatePaintNodeData *); + void handleComponentComplete(); + void handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value); + void maybeUpdateShaders(); + +private slots: + void propertyChanged(int mappedId); + void sourceDestroyed(QObject *object); + void markGeometryDirtyAndUpdate(); + void markGeometryDirtyAndUpdateIfSupportsAtlas(); + void shaderCodePrepared(bool ok, QSGGuiThreadShaderEffectManager::ShaderInfo::Type typeHint, + const QByteArray &src, QSGGuiThreadShaderEffectManager::ShaderInfo *result); + +private: + QSGGuiThreadShaderEffectManager *shaderEffectManager() const; + + enum Shader { + Vertex, + Fragment, + + NShader + }; + bool updateShader(Shader shaderType, const QByteArray &src); + void updateShaderVars(Shader shaderType); + void disconnectSignals(Shader shaderType); + void clearMappers(Shader shaderType); + bool sourceIsUnique(QQuickItem *source, Shader typeToSkip, int indexToSkip) const; + + QQuickShaderEffect *m_item; + const QMetaObject *m_itemMetaObject = nullptr; + QSize m_meshResolution; + QQuickShaderEffectMesh *m_mesh; + QQuickGridMesh m_defaultMesh; + QQuickShaderEffect::CullMode m_cullMode; + bool m_blending; + bool m_supportsAtlasTextures; + mutable QSGGuiThreadShaderEffectManager *m_mgr; + QByteArray m_fragShader; + bool m_fragNeedsUpdate; + QByteArray m_vertShader; + bool m_vertNeedsUpdate; + + QSGShaderEffectNode::ShaderData m_shaders[NShader]; + QSGShaderEffectNode::DirtyShaderFlags m_dirty; + QSet<int> m_dirtyConstants[NShader]; + QSet<int> m_dirtyTextures[NShader]; + QSGGuiThreadShaderEffectManager::ShaderInfo *m_inProgress[NShader]; + + QVector<QtPrivate::EffectSlotMapper*> m_mappers[NShader]; +}; + + class QQuickShaderEffectPrivate : public QQuickItemPrivate { Q_DECLARE_PUBLIC(QQuickShaderEffect) @@ -300,7 +425,7 @@ QQuickShaderEffect::QQuickShaderEffect(QQuickItem *parent) { setFlag(QQuickItem::ItemHasContents); - m_impl = new QQuickGenericShaderEffect(this, this); + m_impl = new QQuickShaderEffectImpl(this); } QQuickShaderEffect::~QQuickShaderEffect() @@ -558,6 +683,657 @@ void QQuickShaderEffectPrivate::updatePolish() q->m_impl->maybeUpdateShaders(); } +QQuickShaderEffectImpl::QQuickShaderEffectImpl(QQuickShaderEffect *item) + : QObject(item) + , m_item(item) + , m_meshResolution(1, 1) + , m_mesh(nullptr) + , m_cullMode(QQuickShaderEffect::NoCulling) + , m_blending(true) + , m_supportsAtlasTextures(false) + , m_mgr(nullptr) + , m_fragNeedsUpdate(true) + , m_vertNeedsUpdate(true) +{ + qRegisterMetaType<QSGGuiThreadShaderEffectManager::ShaderInfo::Type>("ShaderInfo::Type"); + for (int i = 0; i < NShader; ++i) + m_inProgress[i] = nullptr; +} + +QQuickShaderEffectImpl::~QQuickShaderEffectImpl() +{ + for (int i = 0; i < NShader; ++i) { + disconnectSignals(Shader(i)); + clearMappers(Shader(i)); + } + + delete m_mgr; +} + +void QQuickShaderEffectImpl::setFragmentShader(const QByteArray &src) +{ + // Compare the actual values since they are often just filenames. + // Optimizing by comparing constData() is a bad idea since seemingly static + // strings in QML may in fact have different addresses when a binding + // triggers assigning the "same" value to the property. + if (m_fragShader == src) + return; + + m_fragShader = src; + + m_fragNeedsUpdate = true; + if (m_item->isComponentComplete()) + maybeUpdateShaders(); + + emit m_item->fragmentShaderChanged(); +} + +void QQuickShaderEffectImpl::setVertexShader(const QByteArray &src) +{ + if (m_vertShader == src) + return; + + m_vertShader = src; + + m_vertNeedsUpdate = true; + if (m_item->isComponentComplete()) + maybeUpdateShaders(); + + emit m_item->vertexShaderChanged(); +} + +void QQuickShaderEffectImpl::setBlending(bool enable) +{ + if (m_blending == enable) + return; + + m_blending = enable; + m_item->update(); + emit m_item->blendingChanged(); +} + +QVariant QQuickShaderEffectImpl::mesh() const +{ + return m_mesh ? QVariant::fromValue(static_cast<QObject *>(m_mesh)) + : QVariant::fromValue(m_meshResolution); +} + +void QQuickShaderEffectImpl::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(markGeometryDirtyAndUpdate())); + } 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 a size or an object deriving from QQuickShaderEffectMesh"); + } + m_defaultMesh.setResolution(m_meshResolution); + } + + m_dirty |= QSGShaderEffectNode::DirtyShaderMesh; + m_item->update(); + + emit m_item->meshChanged(); +} + +void QQuickShaderEffectImpl::setCullMode(QQuickShaderEffect::CullMode face) +{ + if (m_cullMode == face) + return; + + m_cullMode = face; + m_item->update(); + emit m_item->cullModeChanged(); +} + +void QQuickShaderEffectImpl::setSupportsAtlasTextures(bool supports) +{ + if (m_supportsAtlasTextures == supports) + return; + + m_supportsAtlasTextures = supports; + markGeometryDirtyAndUpdate(); + emit m_item->supportsAtlasTexturesChanged(); +} + +QString QQuickShaderEffectImpl::parseLog() +{ + maybeUpdateShaders(); + return log(); +} + +QString QQuickShaderEffectImpl::log() const +{ + QSGGuiThreadShaderEffectManager *mgr = shaderEffectManager(); + if (!mgr) + return QString(); + + return mgr->log(); +} + +QQuickShaderEffect::Status QQuickShaderEffectImpl::status() const +{ + QSGGuiThreadShaderEffectManager *mgr = shaderEffectManager(); + if (!mgr) + return QQuickShaderEffect::Uncompiled; + + return QQuickShaderEffect::Status(mgr->status()); +} + +void QQuickShaderEffectImpl::handleEvent(QEvent *event) +{ + if (event->type() == QEvent::DynamicPropertyChange) { + QDynamicPropertyChangeEvent *e = static_cast<QDynamicPropertyChangeEvent *>(event); + for (int shaderType = 0; shaderType < NShader; ++shaderType) { + const auto &vars(m_shaders[shaderType].shaderInfo.variables); + for (int idx = 0; idx < vars.count(); ++idx) { + if (vars[idx].name == e->propertyName()) { + propertyChanged((shaderType << 16) | idx); + break; + } + } + } + } +} + +void QQuickShaderEffectImpl::handleGeometryChanged(const QRectF &, const QRectF &) +{ + m_dirty |= QSGShaderEffectNode::DirtyShaderGeometry; +} + +QSGNode *QQuickShaderEffectImpl::handleUpdatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *) +{ + QSGShaderEffectNode *node = static_cast<QSGShaderEffectNode *>(oldNode); + + if (m_item->width() <= 0 || m_item->height() <= 0) { + delete node; + return nullptr; + } + + // Do not change anything while a new shader is being reflected or compiled. + if (m_inProgress[Vertex] || m_inProgress[Fragment]) + return node; + + // The manager should be already created on the gui thread. Just take that instance. + QSGGuiThreadShaderEffectManager *mgr = shaderEffectManager(); + if (!mgr) { + delete node; + return nullptr; + } + + if (!node) { + QSGRenderContext *rc = QQuickWindowPrivate::get(m_item->window())->context; + node = rc->sceneGraphContext()->createShaderEffectNode(rc); + if (!node) { + qWarning("No shader effect node"); + return nullptr; + } + m_dirty = QSGShaderEffectNode::DirtyShaderAll; + connect(node, &QSGShaderEffectNode::textureChanged, + this, &QQuickShaderEffectImpl::markGeometryDirtyAndUpdateIfSupportsAtlas); + } + + QSGShaderEffectNode::SyncData sd; + sd.dirty = m_dirty; + sd.cullMode = QSGShaderEffectNode::CullMode(m_cullMode); + sd.blending = m_blending; + sd.vertex.shader = &m_shaders[Vertex]; + sd.vertex.dirtyConstants = &m_dirtyConstants[Vertex]; + sd.vertex.dirtyTextures = &m_dirtyTextures[Vertex]; + sd.fragment.shader = &m_shaders[Fragment]; + sd.fragment.dirtyConstants = &m_dirtyConstants[Fragment]; + sd.fragment.dirtyTextures = &m_dirtyTextures[Fragment]; + node->syncMaterial(&sd); + + if (m_dirty & QSGShaderEffectNode::DirtyShaderMesh) { + node->setGeometry(nullptr); + m_dirty &= ~QSGShaderEffectNode::DirtyShaderMesh; + m_dirty |= QSGShaderEffectNode::DirtyShaderGeometry; + } + + if (m_dirty & QSGShaderEffectNode::DirtyShaderGeometry) { + const QRectF rect(0, 0, m_item->width(), m_item->height()); + QQuickShaderEffectMesh *mesh = m_mesh ? m_mesh : &m_defaultMesh; + QSGGeometry *geometry = node->geometry(); + + const QRectF srcRect = node->updateNormalizedTextureSubRect(m_supportsAtlasTextures); + geometry = mesh->updateGeometry(geometry, 2, 0, srcRect, rect); + + node->setFlag(QSGNode::OwnsGeometry, false); + node->setGeometry(geometry); + node->setFlag(QSGNode::OwnsGeometry, true); + + m_dirty &= ~QSGShaderEffectNode::DirtyShaderGeometry; + } + + m_dirty = {}; + for (int i = 0; i < NShader; ++i) { + m_dirtyConstants[i].clear(); + m_dirtyTextures[i].clear(); + } + + return node; +} + +void QQuickShaderEffectImpl::maybeUpdateShaders() +{ + if (m_vertNeedsUpdate) + m_vertNeedsUpdate = !updateShader(Vertex, m_vertShader); + if (m_fragNeedsUpdate) + m_fragNeedsUpdate = !updateShader(Fragment, m_fragShader); + if (m_vertNeedsUpdate || m_fragNeedsUpdate) { + // This function is invoked either from componentComplete or in a + // response to a previous invocation's polish() request. If this is + // case #1 then updateShader can fail due to not having a window or + // scenegraph ready. Schedule the polish to try again later. In case #2 + // the backend probably does not have shadereffect support so there is + // nothing to do for us here. + if (!m_item->window() || !m_item->window()->isSceneGraphInitialized()) + m_item->polish(); + } +} + +void QQuickShaderEffectImpl::handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value) +{ + // Move the window ref. + if (change == QQuickItem::ItemSceneChange) { + for (int shaderType = 0; shaderType < NShader; ++shaderType) { + for (const auto &vd : qAsConst(m_shaders[shaderType].varData)) { + if (vd.specialType == QSGShaderEffectNode::VariableData::Source) { + QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(vd.value)); + if (source) { + if (value.window) + QQuickItemPrivate::get(source)->refWindow(value.window); + else + QQuickItemPrivate::get(source)->derefWindow(); + } + } + } + } + } +} + +QSGGuiThreadShaderEffectManager *QQuickShaderEffectImpl::shaderEffectManager() const +{ + if (!m_mgr) { + // return null if this is not the gui thread and not already created + if (QThread::currentThread() != m_item->thread()) + return m_mgr; + QQuickWindow *w = m_item->window(); + if (w) { // note: just the window, don't care about isSceneGraphInitialized() here + m_mgr = QQuickWindowPrivate::get(w)->context->sceneGraphContext()->createGuiThreadShaderEffectManager(); + if (m_mgr) { + connect(m_mgr, SIGNAL(logAndStatusChanged()), m_item, SIGNAL(logChanged())); + connect(m_mgr, SIGNAL(logAndStatusChanged()), m_item, SIGNAL(statusChanged())); + connect(m_mgr, &QSGGuiThreadShaderEffectManager::shaderCodePrepared, this, &QQuickShaderEffectImpl::shaderCodePrepared); + } + } + } + + return m_mgr; +} + +void QQuickShaderEffectImpl::disconnectSignals(Shader shaderType) +{ + for (auto *mapper : m_mappers[shaderType]) { + void *a = mapper; + if (mapper) + QObjectPrivate::disconnect(m_item, mapper->signalIndex(), &a); + } + for (const auto &vd : qAsConst(m_shaders[shaderType].varData)) { + if (vd.specialType == QSGShaderEffectNode::VariableData::Source) { + QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(vd.value)); + if (source) { + if (m_item->window()) + QQuickItemPrivate::get(source)->derefWindow(); + QObject::disconnect(source, SIGNAL(destroyed(QObject*)), this, SLOT(sourceDestroyed(QObject*))); + } + } + } +} + +void QQuickShaderEffectImpl::clearMappers(QQuickShaderEffectImpl::Shader shaderType) +{ + for (auto *mapper : qAsConst(m_mappers[shaderType])) { + if (mapper) + mapper->destroyIfLastRef(); + } + m_mappers[shaderType].clear(); +} + +static inline QVariant getValueFromProperty(QObject *item, const QMetaObject *itemMetaObject, + const QByteArray &name, int propertyIndex) +{ + QVariant value; + if (propertyIndex == -1) { + value = item->property(name); + } else { + value = itemMetaObject->property(propertyIndex).read(item); + } + return value; +} + +struct ShaderInfoCache +{ + bool contains(const QByteArray &key) const + { + return m_shaderInfoCache.contains(key); + } + + QSGGuiThreadShaderEffectManager::ShaderInfo value(const QByteArray &key) const + { + return m_shaderInfoCache.value(key); + } + + void insert(const QByteArray &key, const QSGGuiThreadShaderEffectManager::ShaderInfo &value) + { + m_shaderInfoCache.insert(key, value); + } + + QHash<QByteArray, QSGGuiThreadShaderEffectManager::ShaderInfo> m_shaderInfoCache; +}; + +Q_GLOBAL_STATIC(ShaderInfoCache, shaderInfoCache) + +bool QQuickShaderEffectImpl::updateShader(Shader shaderType, const QByteArray &src) +{ + QSGGuiThreadShaderEffectManager *mgr = shaderEffectManager(); + if (!mgr) + return false; + + const bool texturesSeparate = mgr->hasSeparateSamplerAndTextureObjects(); + + disconnectSignals(shaderType); + + m_shaders[shaderType].shaderInfo = QSGGuiThreadShaderEffectManager::ShaderInfo(); + m_shaders[shaderType].varData.clear(); + + if (!src.isEmpty()) { + if (shaderInfoCache()->contains(src)) { + m_shaders[shaderType].shaderInfo = shaderInfoCache()->value(src); + m_shaders[shaderType].hasShaderCode = true; + } else { + // Each prepareShaderCode call needs its own work area, hence the + // dynamic alloc. If there are calls in progress, let those run to + // finish, their results can then simply be ignored because + // m_inProgress indicates what we care about. + m_inProgress[shaderType] = new QSGGuiThreadShaderEffectManager::ShaderInfo; + const QSGGuiThreadShaderEffectManager::ShaderInfo::Type typeHint = + shaderType == Vertex ? QSGGuiThreadShaderEffectManager::ShaderInfo::TypeVertex + : QSGGuiThreadShaderEffectManager::ShaderInfo::TypeFragment; + // Figure out what input parameters and variables are used in the + // shader. For file-based shader source/bytecode this is where the data + // is pulled in from the file. Some backends may choose to do + // source->bytecode compilation as well in this step. + mgr->prepareShaderCode(typeHint, src, m_inProgress[shaderType]); + // the rest is handled in shaderCodePrepared() + return true; + } + } else { + m_shaders[shaderType].hasShaderCode = false; + if (shaderType == Fragment) { + // With built-in shaders hasShaderCode is set to false and all + // metadata is empty, as it is left up to the node to provide a + // built-in default shader and its metadata. However, in case of + // the built-in fragment shader the value for 'source' has to be + // provided and monitored like with an application-provided shader. + QSGGuiThreadShaderEffectManager::ShaderInfo::Variable v; + v.name = QByteArrayLiteral("source"); + v.bindPoint = 0; // fake + v.type = texturesSeparate ? QSGGuiThreadShaderEffectManager::ShaderInfo::Texture + : QSGGuiThreadShaderEffectManager::ShaderInfo::Sampler; + m_shaders[shaderType].shaderInfo.variables.append(v); + } + } + + updateShaderVars(shaderType); + m_dirty |= QSGShaderEffectNode::DirtyShaders; + m_item->update(); + return true; +} + +void QQuickShaderEffectImpl::shaderCodePrepared(bool ok, QSGGuiThreadShaderEffectManager::ShaderInfo::Type typeHint, + const QByteArray &src, QSGGuiThreadShaderEffectManager::ShaderInfo *result) +{ + const Shader shaderType = typeHint == QSGGuiThreadShaderEffectManager::ShaderInfo::TypeVertex ? Vertex : Fragment; + + // If another call was made to updateShader() for the same shader type in + // the meantime then our results are useless, just drop them. + if (result != m_inProgress[shaderType]) { + delete result; + return; + } + + m_shaders[shaderType].shaderInfo = *result; + delete result; + m_inProgress[shaderType] = nullptr; + + if (!ok) { + qWarning("ShaderEffect: shader preparation failed for %s\n%s\n", src.constData(), qPrintable(log())); + m_shaders[shaderType].hasShaderCode = false; + return; + } + + m_shaders[shaderType].hasShaderCode = true; + shaderInfoCache()->insert(src, m_shaders[shaderType].shaderInfo); + updateShaderVars(shaderType); + m_dirty |= QSGShaderEffectNode::DirtyShaders; + m_item->update(); +} + +void QQuickShaderEffectImpl::updateShaderVars(Shader shaderType) +{ + QSGGuiThreadShaderEffectManager *mgr = shaderEffectManager(); + if (!mgr) + return; + + const bool texturesSeparate = mgr->hasSeparateSamplerAndTextureObjects(); + + const int varCount = m_shaders[shaderType].shaderInfo.variables.count(); + m_shaders[shaderType].varData.resize(varCount); + + // Reuse signal mappers as much as possible since the mapping is based on + // the index and shader type which are both constant. + if (m_mappers[shaderType].count() < varCount) + m_mappers[shaderType].resize(varCount); + + auto *engine = qmlEngine(m_item); + QQmlPropertyCache *propCache = engine ? QQmlData::ensurePropertyCache(engine, m_item) : nullptr; + + if (!m_itemMetaObject) + m_itemMetaObject = m_item->metaObject(); + + // Hook up the signals to get notified about changes for properties that + // correspond to variables in the shader. Store also the values. + for (int i = 0; i < varCount; ++i) { + const auto &v(m_shaders[shaderType].shaderInfo.variables.at(i)); + QSGShaderEffectNode::VariableData &vd(m_shaders[shaderType].varData[i]); + const bool isSpecial = v.name.startsWith("qt_"); // special names not mapped to properties + if (isSpecial) { + if (v.name == "qt_Opacity") + vd.specialType = QSGShaderEffectNode::VariableData::Opacity; + else if (v.name == "qt_Matrix") + vd.specialType = QSGShaderEffectNode::VariableData::Matrix; + else if (v.name.startsWith("qt_SubRect_")) + vd.specialType = QSGShaderEffectNode::VariableData::SubRect; + continue; + } + + // The value of a property corresponding to a sampler is the source + // item ref, unless there are separate texture objects in which case + // the sampler is ignored (here). + if (v.type == QSGGuiThreadShaderEffectManager::ShaderInfo::Sampler) { + if (texturesSeparate) { + vd.specialType = QSGShaderEffectNode::VariableData::Unused; + continue; + } else { + vd.specialType = QSGShaderEffectNode::VariableData::Source; + } + } else if (v.type == QSGGuiThreadShaderEffectManager::ShaderInfo::Texture) { + Q_ASSERT(texturesSeparate); + vd.specialType = QSGShaderEffectNode::VariableData::Source; + } else { + vd.specialType = QSGShaderEffectNode::VariableData::None; + } + + // Find the property on the ShaderEffect item. + int propIdx = -1; + QQmlPropertyData *pd = nullptr; + if (propCache) { + pd = propCache->property(QLatin1String(v.name), nullptr, nullptr); + if (pd) { + if (!pd->isFunction()) + propIdx = pd->coreIndex(); + } + } + if (propIdx >= 0) { + if (pd && !pd->isFunction()) { + if (pd->notifyIndex() == -1) { + qWarning("QQuickShaderEffect: property '%s' does not have notification method!", v.name.constData()); + } else { + auto *&mapper = m_mappers[shaderType][i]; + if (!mapper) { + const int mappedId = i | (shaderType << 16); + mapper = new QtPrivate::EffectSlotMapper([this, mappedId](){ + this->propertyChanged(mappedId); + }); + } + mapper->setSignalIndex(m_itemMetaObject->property(propIdx).notifySignal().methodIndex()); + Q_ASSERT(m_item->metaObject() == m_itemMetaObject); + bool ok = QObjectPrivate::connectImpl(m_item, pd->notifyIndex(), m_item, nullptr, mapper, + Qt::AutoConnection, nullptr, m_itemMetaObject); + if (!ok) + qWarning() << "Failed to connect to property" << m_itemMetaObject->property(propIdx).name() + << "(" << propIdx << ", signal index" << pd->notifyIndex() + << ") of item" << m_item; + } + } + } else { + // Do not warn for dynamic properties. + if (!m_item->property(v.name.constData()).isValid()) + qWarning("ShaderEffect: '%s' does not have a matching property", v.name.constData()); + } + + + vd.propertyIndex = propIdx; + vd.value = getValueFromProperty(m_item, m_itemMetaObject, v.name, vd.propertyIndex); + if (vd.specialType == QSGShaderEffectNode::VariableData::Source) { + QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(vd.value)); + if (source) { + if (m_item->window()) + QQuickItemPrivate::get(source)->refWindow(m_item->window()); + QObject::connect(source, SIGNAL(destroyed(QObject*)), this, SLOT(sourceDestroyed(QObject*))); + } + } + } +} + +bool QQuickShaderEffectImpl::sourceIsUnique(QQuickItem *source, Shader typeToSkip, int indexToSkip) const +{ + for (int shaderType = 0; shaderType < NShader; ++shaderType) { + for (int idx = 0; idx < m_shaders[shaderType].varData.count(); ++idx) { + if (shaderType != typeToSkip || idx != indexToSkip) { + const auto &vd(m_shaders[shaderType].varData[idx]); + if (vd.specialType == QSGShaderEffectNode::VariableData::Source && qvariant_cast<QObject *>(vd.value) == source) + return false; + } + } + } + return true; +} + +void QQuickShaderEffectImpl::propertyChanged(int mappedId) +{ + const Shader type = Shader(mappedId >> 16); + const int idx = mappedId & 0xFFFF; + const auto &v(m_shaders[type].shaderInfo.variables[idx]); + auto &vd(m_shaders[type].varData[idx]); + + vd.value = getValueFromProperty(m_item, m_itemMetaObject, v.name, vd.propertyIndex); + + if (vd.specialType == QSGShaderEffectNode::VariableData::Source) { + QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(vd.value)); + if (source) { + if (m_item->window()) + QQuickItemPrivate::get(source)->derefWindow(); + // QObject::disconnect() will disconnect all matching connections. + // If the same source has been attached to two separate + // textures/samplers, then changing one of them would trigger both + // to be disconnected. So check first. + if (sourceIsUnique(source, type, idx)) + QObject::disconnect(source, SIGNAL(destroyed(QObject*)), this, SLOT(sourceDestroyed(QObject*))); + } + + source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(vd.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 (m_item->window()) + QQuickItemPrivate::get(source)->refWindow(m_item->window()); + QObject::connect(source, SIGNAL(destroyed(QObject*)), this, SLOT(sourceDestroyed(QObject*))); + } + + m_dirty |= QSGShaderEffectNode::DirtyShaderTexture; + m_dirtyTextures[type].insert(idx); + + } else { + m_dirty |= QSGShaderEffectNode::DirtyShaderConstant; + m_dirtyConstants[type].insert(idx); + } + + m_item->update(); +} + +void QQuickShaderEffectImpl::sourceDestroyed(QObject *object) +{ + for (int shaderType = 0; shaderType < NShader; ++shaderType) { + for (auto &vd : m_shaders[shaderType].varData) { + if (vd.specialType == QSGShaderEffectNode::VariableData::Source && vd.value.canConvert<QObject *>()) { + if (qvariant_cast<QObject *>(vd.value) == object) + vd.value = QVariant(); + } + } + } +} + +void QQuickShaderEffectImpl::markGeometryDirtyAndUpdate() +{ + m_dirty |= QSGShaderEffectNode::DirtyShaderGeometry; + m_item->update(); +} + +void QQuickShaderEffectImpl::markGeometryDirtyAndUpdateIfSupportsAtlas() +{ + if (m_supportsAtlasTextures) + markGeometryDirtyAndUpdate(); +} + + + QT_END_NAMESPACE #include "moc_qquickshadereffect_p.cpp" +#include "qquickshadereffect.moc" |