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39
40#include "rendersurfaceselector_p.h"
41#include <Qt3DRender/qrendersurfaceselector.h>
42#include <Qt3DRender/private/qrendersurfaceselector_p.h>
43#include <QtGui/qwindow.h>
44#include <QtGui/qscreen.h>
45#include <QtGui/qoffscreensurface.h>
46
47QT_BEGIN_NAMESPACE
48
49using namespace Qt3DCore;
50
51namespace {
52
53QSurface *surfaceFromQObject(QObject *o)
54{
55 QSurface *surface = nullptr;
56 QWindow *window = qobject_cast<QWindow *>(o);
57 if (window) {
58 surface = static_cast<QSurface *>(window);
59 } else {
60 QOffscreenSurface *offscreen = qobject_cast<QOffscreenSurface *>(object: o);
61 if (offscreen)
62 surface = static_cast<QSurface *>(offscreen);
63 }
64 return surface;
65}
66
67}
68
69namespace Qt3DRender {
70namespace Render {
71
72RenderSurfaceSelector::RenderSurfaceSelector()
73 : FrameGraphNode(FrameGraphNode::Surface)
74 , m_surfaceObj(nullptr)
75 , m_surface(nullptr)
76 , m_width(0)
77 , m_height(0)
78 , m_devicePixelRatio(0.0f)
79{
80}
81
82void RenderSurfaceSelector::syncFromFrontEnd(const QNode *frontEnd, bool firstTime)
83{
84 const QRenderSurfaceSelector *node = qobject_cast<const QRenderSurfaceSelector *>(object: frontEnd);
85 if (!node)
86 return;
87
88 FrameGraphNode::syncFromFrontEnd(frontEnd, firstTime);
89
90 if (node->surface() != m_surfaceObj) {
91 m_surfaceObj = node->surface();
92 m_surface = surfaceFromQObject(o: m_surfaceObj);
93 markDirty(changes: AbstractRenderer::FrameGraphDirty);
94 }
95
96 if (m_surface && m_surface->surfaceClass() == QSurface::Window) {
97 QWindow *window = static_cast<QWindow *>(m_surface);
98 if (window->width() != m_width) {
99 m_width = window->width();
100 markDirty(changes: AbstractRenderer::FrameGraphDirty);
101 }
102 if (window->height() != m_height) {
103 m_height = window->height();
104 markDirty(changes: AbstractRenderer::FrameGraphDirty);
105 }
106 }
107
108 if (node->externalRenderTargetSize() != m_renderTargetSize) {
109 m_renderTargetSize = node->externalRenderTargetSize();
110 markDirty(changes: AbstractRenderer::FrameGraphDirty);
111 }
112
113 if (node->surfacePixelRatio() != m_devicePixelRatio) {
114 m_devicePixelRatio = node->surfacePixelRatio();
115 markDirty(changes: AbstractRenderer::FrameGraphDirty);
116 }
117}
118
119QSize RenderSurfaceSelector::renderTargetSize() const
120{
121 if (m_renderTargetSize.isValid())
122 return m_renderTargetSize;
123 return QSize(m_width, m_height);
124}
125
126} // namespace Render
127} // namespace Qt3DRender
128
129QT_END_NAMESPACE
130

source code of qt3d/src/render/framegraph/rendersurfaceselector.cpp