/**************************************************************************** ** ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt3D 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 "qeffect.h" #include "qeffect_p.h" #include "qtechnique.h" #include "qparameter.h" QT_BEGIN_NAMESPACE using namespace Qt3DCore; namespace Qt3DRender { QEffectPrivate::QEffectPrivate() : QNodePrivate() { } /*! \class Qt3DRender::QEffect \inmodule Qt3DRender \inherits Qt3DCore::QNode \since 5.7 \brief The base class for effects in a Qt 3D scene. The QEffect class combines a set of techniques and parameters used by those techniques to produce a rendering effect for a material. An QEffect instance should be shared among several QMaterial instances when possible. \note QEffect node can not be disabled. \code QEffect *effect = new QEffect(); // Create technique, render pass and shader QTechnique *gl3Technique = new QTechnique(); QRenderPass *gl3Pass = new QRenderPass(); QShaderProgram *glShader = new QShaderProgram(); // Set the shader on the render pass gl3Pass->setShaderProgram(glShader); // Add the pass to the technique gl3Technique->addRenderPass(gl3Pass); // Set the targeted GL version for the technique gl3Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL); gl3Technique->graphicsApiFilter()->setMajorVersion(3); gl3Technique->graphicsApiFilter()->setMinorVersion(1); gl3Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::CoreProfile); // Add the technique to the effect effect->addTechnique(gl3Technique); \endcode A QParameter defined on a QEffect overrides parameter (of the same name) defined in QTechnique and QRenderPass, but are overridden by parameter in QRenderPassFilter, QTechniqueFilter and QMaterial. \sa QMaterial, QTechnique, QParameter */ /*! \qmltype Effect \instantiates Qt3DRender::QEffect \inherits Node \inqmlmodule Qt3D.Render \since 5.7 \brief The base class for effects in a Qt 3D scene. The Effect type combines a set of techniques and parameters used by those techniques to produce a rendering effect for a material. An Effect instance should be shared among several Material instances when possible. A Parameter defined on a Effect overrides parameter (of the same name) defined in Technique and RenderPass, but are overridden by parameter in RenderPassFilter, TechniqueFilter and Material. \note Effect node can not be disabled. \code Effect { id: effect technique: [ Technique { id: gl3Technique graphicsApiFilter { api: GraphicsApiFilter.OpenGL profile: GraphicsApiFilter.CoreProfile majorVersion: 3 minorVersion: 1 } renderPasses: [ RenderPass { id: gl3Pass shaderProgram: ShaderProgram { ... } } ] } ] } \endcode \sa Material, Technique, Parameter */ QEffect::QEffect(QNode *parent) : QNode(*new QEffectPrivate, parent) { } QEffect::~QEffect() { } /*! \internal */ QEffect::QEffect(QEffectPrivate &dd, QNode *parent) : QNode(dd, parent) { } /*! \qmlproperty list Effect::techniques Holds the list of techniques used by this effect. */ /*! \qmlproperty list Effect::parameters Holds the list of parameters used by this effect. A parameter is used to set a corresponding uniform value in the shader used by this effect. */ /*! * Adds \a parameter to the effect. It sends an update to the backend. * The \a parameter will be used to set a corresponding uniform value in the shader used * by this effect. */ void QEffect::addParameter(QParameter *parameter) { Q_D(QEffect); if (parameter && !d->m_parameters.contains(parameter)) { d->m_parameters.append(parameter); // Ensures proper bookkeeping d->registerDestructionHelper(parameter, &QEffect::removeParameter, d->m_parameters); // We need to add it as a child of the current node if it has been declared inline // Or not previously added as a child of the current node so that // 1) The backend gets notified about it's creation // 2) When the current node is destroyed, it gets destroyed as well if (!parameter->parent()) parameter->setParent(this); d->updateNode(parameter, "parameter", Qt3DCore::PropertyValueAdded); } } /*! * Removes a parameter \a parameter from the effect. */ void QEffect::removeParameter(QParameter *parameter) { Q_D(QEffect); if (!d->m_parameters.removeOne(parameter)) return; // Remove bookkeeping connection d->unregisterDestructionHelper(parameter); d->updateNode(parameter, "parameter", Qt3DCore::PropertyValueRemoved); } /*! * Returns the list of parameters used by the effect. */ QVector QEffect::parameters() const { Q_D(const QEffect); return d->m_parameters; } /*! * Adds a new technique \a t to the effect. It sends an update to the backend. */ void QEffect::addTechnique(QTechnique *t) { Q_ASSERT(t); Q_D(QEffect); if (t && !d->m_techniques.contains(t)) { d->m_techniques.append(t); // Ensures proper bookkeeping d->registerDestructionHelper(t, &QEffect::removeTechnique, d->m_techniques); // We need to add it as a child of the current node if it has been declared inline // Or not previously added as a child of the current node so that // 1) The backend gets notified about it's creation // 2) When the current node is destroyed, tit gets destroyed as well if (!t->parent()) t->setParent(this); d->updateNode(t, "technique", Qt3DCore::PropertyValueAdded); } } /*! * Removes a technique \a t from the effect. */ void QEffect::removeTechnique(QTechnique *t) { Q_D(QEffect); if (!d->m_techniques.removeOne(t)) return; d->updateNode(t, "technique", Qt3DCore::PropertyValueRemoved); // Remove bookkeeping connection d->unregisterDestructionHelper(t); } /*! * Returns the list of techniques used by the effect. */ QVector QEffect::techniques() const { Q_D(const QEffect); return d->m_techniques; } Qt3DCore::QNodeCreatedChangeBasePtr QEffect::createNodeCreationChange() const { auto creationChange = Qt3DCore::QNodeCreatedChangePtr::create(this); auto &data = creationChange->data; Q_D(const QEffect); data.parameterIds = qIdsForNodes(d->m_parameters); data.techniqueIds = qIdsForNodes(d->m_techniques); return creationChange; } } // namespace Qt3DRender QT_END_NAMESPACE