/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
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** This file is part of the Qt3D module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL3$
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** 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
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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);
}