- Qt 5.5
- Qt3D Module
- Qt3D: Deferred Renderer C++ Example
- deferredrenderer.cpp Example File
- Qt 5.5.1 Reference Documentation

# deferredrenderer.cpp Example File

deferred-renderer-cpp/deferredrenderer.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the Qt3D module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL3$
    ** 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
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    ** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
    ** Software Foundation and appearing in the file LICENSE.GPL included in
    ** the packaging of this file. Please review the following information to
    ** ensure the GNU General Public License version 2.0 requirements will be
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    ****************************************************************************/

    #include "deferredrenderer.h"

    DeferredRenderer::DeferredRenderer(Qt3D::QNode *parent)
        : Qt3D::QViewport(parent)
        , m_sceneFilter(new Qt3D::QLayerFilter(this))
        , m_screenQuadFilter(new Qt3D::QLayerFilter(this))
        , m_clearScreenQuad(new Qt3D::QClearBuffer(m_screenQuadFilter))
        , m_gBufferTargetSelector(new Qt3D::QRenderTargetSelector(m_sceneFilter))
        , m_clearGBuffer(new Qt3D::QClearBuffer(m_gBufferTargetSelector))
        , m_geometryPassFilter(new Qt3D::QRenderPassFilter(m_clearGBuffer))
        , m_finalPassFilter(new Qt3D::QRenderPassFilter(m_clearScreenQuad))
        , m_sceneCameraSelector(new Qt3D::QCameraSelector(m_geometryPassFilter))
    {
        m_clearGBuffer->setBuffers(Qt3D::QClearBuffer::ColorDepthBuffer);
        m_clearScreenQuad->setBuffers(Qt3D::QClearBuffer::ColorDepthBuffer);
    }

    void DeferredRenderer::setSceneCamera(Qt3D::QEntity *camera)
    {
        m_sceneCameraSelector->setCamera(camera);
    }

    void DeferredRenderer::setGBuffer(Qt3D::QRenderTarget *gBuffer)
    {
        m_gBufferTargetSelector->setTarget(gBuffer);
    }

    void DeferredRenderer::setGeometryPassCriteria(QList<Qt3D::QAnnotation *> criteria)
    {
        Q_FOREACH (Qt3D::QAnnotation *c, criteria)
            m_geometryPassFilter->addInclude(c);
    }

    void DeferredRenderer::setFinalPassCriteria(QList<Qt3D::QAnnotation *> criteria)
    {
        Q_FOREACH (Qt3D::QAnnotation *c, criteria)
            c->setParent(m_finalPassFilter);
    }

    void DeferredRenderer::setGBufferLayers(const QStringList &layerNames)
    {
        m_sceneFilter->setLayers(layerNames);
    }

    void DeferredRenderer::setScreenQuadLayers(const QStringList &layerNames)
    {
        m_screenQuadFilter->setLayers(layerNames);
    }