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50
51#include "deferredrenderer.h"
52#include "gbuffer.h"
53#include <Qt3DRender/QParameter>
54#include <QWindow>
55
56DeferredRenderer::DeferredRenderer(Qt3DCore::QNode *parent)
57 : Qt3DRender::QViewport(parent)
58 , m_surfaceSelector(new Qt3DRender::QRenderSurfaceSelector(this))
59 , m_sceneFilter(new Qt3DRender::QLayerFilter(m_surfaceSelector))
60 , m_screenQuadFilter(new Qt3DRender::QLayerFilter(m_surfaceSelector))
61 , m_clearScreenQuad(new Qt3DRender::QClearBuffers(m_screenQuadFilter))
62 , m_gBufferTargetSelector(new Qt3DRender::QRenderTargetSelector(m_sceneFilter))
63 , m_clearGBuffer(new Qt3DRender::QClearBuffers(m_gBufferTargetSelector))
64 , m_geometryPassFilter(new Qt3DRender::QRenderPassFilter(m_clearGBuffer))
65 , m_finalPassFilter(new Qt3DRender::QRenderPassFilter(m_clearScreenQuad))
66 , m_sceneCameraSelector(new Qt3DRender::QCameraSelector(m_geometryPassFilter))
67 , m_winSize(new Qt3DRender::QParameter(QStringLiteral("winSize"), QSizeF(1024.0f, 768.0f)))
68 , m_gBuffer(new GBuffer(this))
69 , m_window(nullptr)
70{
71 m_clearGBuffer->setBuffers(Qt3DRender::QClearBuffers::ColorDepthBuffer);
72 m_clearScreenQuad->setBuffers(Qt3DRender::QClearBuffers::ColorDepthBuffer);
73 m_gBufferTargetSelector->setTarget(m_gBuffer);
74
75 m_finalPassFilter->addParameter(parameter: new Qt3DRender::QParameter(QStringLiteral("position"), m_gBuffer->positionTexture()));
76 m_finalPassFilter->addParameter(parameter: new Qt3DRender::QParameter(QStringLiteral("normal"), m_gBuffer->normalTexture()));
77 m_finalPassFilter->addParameter(parameter: new Qt3DRender::QParameter(QStringLiteral("color"), m_gBuffer->colorTexture()));
78 m_finalPassFilter->addParameter(parameter: m_winSize);
79}
80
81void DeferredRenderer::setSceneCamera(Qt3DCore::QEntity *camera)
82{
83 m_sceneCameraSelector->setCamera(camera);
84}
85
86void DeferredRenderer::setGeometryPassCriteria(QList<Qt3DRender::QFilterKey *> criteria)
87{
88 for (Qt3DRender::QFilterKey *c : qAsConst(t&: criteria))
89 m_geometryPassFilter->addMatch(filterKey: c);
90}
91
92void DeferredRenderer::setFinalPassCriteria(QList<Qt3DRender::QFilterKey *> criteria)
93{
94 for (Qt3DRender::QFilterKey *c : qAsConst(t&: criteria))
95 c->setParent(m_finalPassFilter);
96}
97
98void DeferredRenderer::setGBufferLayer(Qt3DRender::QLayer *layer)
99{
100 m_sceneFilter->addLayer(layer);
101}
102
103void DeferredRenderer::setScreenQuadLayer(Qt3DRender::QLayer *layer)
104{
105 m_screenQuadFilter->addLayer(layer);
106}
107
108void DeferredRenderer::setSurface(QWindow *surface)
109{
110 if (surface != m_window) {
111
112 // Disconnect old window's signals
113 if (m_window != nullptr) {
114 QObject::disconnect(m_widthChangedConnection);
115 QObject::disconnect(m_heightChangedConnection);
116 }
117
118 m_window = surface;
119 m_surfaceSelector->setSurface(surface);
120
121 if (m_window != nullptr) {
122 // Store connections
123 m_widthChangedConnection = QObject::connect(sender: surface, signal: &QWindow::widthChanged,
124 slot: [this] (int width) {
125 m_winSize->setValue(QSizeF(float(width), m_winSize->value().toSizeF().height()));
126 });
127 m_heightChangedConnection = QObject::connect(sender: surface, signal: &QWindow::heightChanged,
128 slot: [this] (int height) {
129 m_winSize->setValue(QSizeF(m_winSize->value().toSizeF().width(), float(height)));
130 });
131 }
132 }
133}
134

source code of qt3d/tests/manual/deferred-renderer-cpp/deferredrenderer.cpp