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// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "deferredrenderer.h"
#include "gbuffer.h"
#include <Qt3DRender/QParameter>
#include <QWindow>
DeferredRenderer::DeferredRenderer(Qt3DCore::QNode *parent)
: Qt3DRender::QViewport(parent)
, m_surfaceSelector(new Qt3DRender::QRenderSurfaceSelector(this))
, m_sceneFilter(new Qt3DRender::QLayerFilter(m_surfaceSelector))
, m_screenQuadFilter(new Qt3DRender::QLayerFilter(m_surfaceSelector))
, m_clearScreenQuad(new Qt3DRender::QClearBuffers(m_screenQuadFilter))
, m_gBufferTargetSelector(new Qt3DRender::QRenderTargetSelector(m_sceneFilter))
, m_clearGBuffer(new Qt3DRender::QClearBuffers(m_gBufferTargetSelector))
, m_geometryPassFilter(new Qt3DRender::QRenderPassFilter(m_clearGBuffer))
, m_finalPassFilter(new Qt3DRender::QRenderPassFilter(m_clearScreenQuad))
, m_sceneCameraSelector(new Qt3DRender::QCameraSelector(m_geometryPassFilter))
, m_winSize(new Qt3DRender::QParameter(QStringLiteral("winSize"), QSizeF(1024.0f, 768.0f)))
, m_gBuffer(new GBuffer(this))
, m_window(nullptr)
{
m_clearGBuffer->setBuffers(Qt3DRender::QClearBuffers::ColorDepthBuffer);
m_clearScreenQuad->setBuffers(Qt3DRender::QClearBuffers::ColorDepthBuffer);
m_gBufferTargetSelector->setTarget(m_gBuffer);
m_finalPassFilter->addParameter(new Qt3DRender::QParameter(QStringLiteral("position"), m_gBuffer->positionTexture()));
m_finalPassFilter->addParameter(new Qt3DRender::QParameter(QStringLiteral("normal"), m_gBuffer->normalTexture()));
m_finalPassFilter->addParameter(new Qt3DRender::QParameter(QStringLiteral("color"), m_gBuffer->colorTexture()));
m_finalPassFilter->addParameter(m_winSize);
}
void DeferredRenderer::setSceneCamera(Qt3DCore::QEntity *camera)
{
m_sceneCameraSelector->setCamera(camera);
}
void DeferredRenderer::setGeometryPassCriteria(QList<Qt3DRender::QFilterKey *> criteria)
{
for (Qt3DRender::QFilterKey *c : std::as_const(criteria))
m_geometryPassFilter->addMatch(c);
}
void DeferredRenderer::setFinalPassCriteria(QList<Qt3DRender::QFilterKey *> criteria)
{
for (Qt3DRender::QFilterKey *c : std::as_const(criteria))
c->setParent(m_finalPassFilter);
}
void DeferredRenderer::setGBufferLayer(Qt3DRender::QLayer *layer)
{
m_sceneFilter->addLayer(layer);
}
void DeferredRenderer::setScreenQuadLayer(Qt3DRender::QLayer *layer)
{
m_screenQuadFilter->addLayer(layer);
}
void DeferredRenderer::setSurface(QWindow *surface)
{
if (surface != m_window) {
// Disconnect old window's signals
if (m_window != nullptr) {
QObject::disconnect(m_widthChangedConnection);
QObject::disconnect(m_heightChangedConnection);
}
m_window = surface;
m_surfaceSelector->setSurface(surface);
if (m_window != nullptr) {
// Store connections
m_widthChangedConnection = QObject::connect(surface, &QWindow::widthChanged,
[this] (int width) {
m_winSize->setValue(QSizeF(float(width), m_winSize->value().toSizeF().height()));
});
m_heightChangedConnection = QObject::connect(surface, &QWindow::heightChanged,
[this] (int height) {
m_winSize->setValue(QSizeF(m_winSize->value().toSizeF().width(), float(height)));
});
}
}
}
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