Deprecate constructing QFlags from a pointer

This was used to support QFlags f = 0 initialization, but with 0 used
as a pointer literal now considered bad form, it had been changed many
places to QFlags f = nullptr, which is meaningless and confusing.

Change-Id: I4bc592151c255dc5cab1a232615caecc520f02e8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

23 files changed, 44 insertions, 45 deletions

diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index d8ed0829af..869e206524 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -1912,10 +1912,10 @@ void QImage::invertPixels(InvertMode mode)
     // Inverting premultiplied pixels would produce invalid image data.
     if (hasAlphaChannel() && qPixelLayouts[d->format].premultiplied) {
         if (depth() > 32) {
-            if (!d->convertInPlace(QImage::Format_RGBA64, 0))
+            if (!d->convertInPlace(QImage::Format_RGBA64, { }))
                 *this = convertToFormat(QImage::Format_RGBA64);
         } else {
-            if (!d->convertInPlace(QImage::Format_ARGB32, 0))
+            if (!d->convertInPlace(QImage::Format_ARGB32, { }))
                 *this = convertToFormat(QImage::Format_ARGB32);
         }
     }
@@ -1982,7 +1982,7 @@ void QImage::invertPixels(InvertMode mode)
     }
 
     if (originalFormat != d->format) {
-        if (!d->convertInPlace(originalFormat, 0))
+        if (!d->convertInPlace(originalFormat, { }))
             *this = convertToFormat(originalFormat);
     }
 }
diff --git a/src/gui/kernel/qplatformcursor.cpp b/src/gui/kernel/qplatformcursor.cpp
index 49eff2ad23..34c4549443 100644
--- a/src/gui/kernel/qplatformcursor.cpp
+++ b/src/gui/kernel/qplatformcursor.cpp
@@ -103,7 +103,7 @@ QT_BEGIN_NAMESPACE
                           QPlatformCursor::clearOverrideCursor().
 */
 
-QPlatformCursor::Capabilities QPlatformCursor::m_capabilities = 0;
+QPlatformCursor::Capabilities QPlatformCursor::m_capabilities = { };
 
 /*!
     \fn QPlatformCursor::QPlatformCursor()
diff --git a/src/gui/kernel/qplatformtheme.h b/src/gui/kernel/qplatformtheme.h
index 356c4ea3ea..3185fc4541 100644
--- a/src/gui/kernel/qplatformtheme.h
+++ b/src/gui/kernel/qplatformtheme.h
@@ -309,7 +309,7 @@ public:
 
     virtual QPixmap standardPixmap(StandardPixmap sp, const QSizeF &size) const;
     virtual QIcon fileIcon(const QFileInfo &fileInfo,
-                           QPlatformTheme::IconOptions iconOptions = nullptr) const;
+                           QPlatformTheme::IconOptions iconOptions = { }) const;
     virtual QIconEngine *createIconEngine(const QString &iconName) const;
 
 #ifndef QT_NO_SHORTCUT
diff --git a/src/gui/kernel/qsimpledrag.cpp b/src/gui/kernel/qsimpledrag.cpp
index d3070a3d1a..803206477c 100644
--- a/src/gui/kernel/qsimpledrag.cpp
+++ b/src/gui/kernel/qsimpledrag.cpp
@@ -393,7 +393,7 @@ void QSimpleDrag::startDrag()
 
 static void sendDragLeave(QWindow *window)
 {
-    QWindowSystemInterface::handleDrag(window, nullptr, QPoint(), Qt::IgnoreAction, 0, 0);
+    QWindowSystemInterface::handleDrag(window, nullptr, QPoint(), Qt::IgnoreAction, { }, { });
 }
 
 void QSimpleDrag::cancel()
diff --git a/src/gui/kernel/qsurfaceformat.cpp b/src/gui/kernel/qsurfaceformat.cpp
index 238886220b..571b820409 100644
--- a/src/gui/kernel/qsurfaceformat.cpp
+++ b/src/gui/kernel/qsurfaceformat.cpp
@@ -57,7 +57,7 @@ QT_BEGIN_NAMESPACE
 class QSurfaceFormatPrivate
 {
 public:
-    explicit QSurfaceFormatPrivate(QSurfaceFormat::FormatOptions _opts = 0)
+    explicit QSurfaceFormatPrivate(QSurfaceFormat::FormatOptions _opts = { })
         : ref(1)
         , opts(_opts)
         , redBufferSize(-1)
diff --git a/src/gui/opengl/qopenglbuffer.cpp b/src/gui/opengl/qopenglbuffer.cpp
index 537097c09f..5ad16a8438 100644
--- a/src/gui/opengl/qopenglbuffer.cpp
+++ b/src/gui/opengl/qopenglbuffer.cpp
@@ -545,9 +545,9 @@ void *QOpenGLBuffer::map(QOpenGLBuffer::Access access)
         qWarning("QOpenGLBuffer::map(): buffer not created");
 #endif
     if (!d->guard || !d->guard->id())
-        return 0;
+        return nullptr;
     if (d->funcs->hasOpenGLExtension(QOpenGLExtensions::MapBufferRange)) {
-        QOpenGLBuffer::RangeAccessFlags rangeAccess = 0;
+        QOpenGLBuffer::RangeAccessFlags rangeAccess;
         switch (access) {
         case QOpenGLBuffer::ReadOnly:
             rangeAccess = QOpenGLBuffer::RangeRead;
diff --git a/src/gui/opengl/qopenglfunctions.cpp b/src/gui/opengl/qopenglfunctions.cpp
index 8ec814296a..42186ace23 100644
--- a/src/gui/opengl/qopenglfunctions.cpp
+++ b/src/gui/opengl/qopenglfunctions.cpp
@@ -489,7 +489,7 @@ QOpenGLFunctions::OpenGLFeatures QOpenGLFunctions::openGLFeatures() const
 {
     QOpenGLFunctionsPrivateEx *d = static_cast<QOpenGLFunctionsPrivateEx *>(d_ptr);
     if (!d)
-        return 0;
+        return { };
     if (d->m_features == -1)
         d->m_features = qt_gl_resolve_features();
     return QOpenGLFunctions::OpenGLFeatures(d->m_features);
@@ -527,7 +527,7 @@ QOpenGLExtensions::OpenGLExtensions QOpenGLExtensions::openGLExtensions()
 {
     QOpenGLFunctionsPrivateEx *d = static_cast<QOpenGLFunctionsPrivateEx *>(d_ptr);
     if (!d)
-        return 0;
+        return { };
     if (d->m_extensions == -1)
         d->m_extensions = qt_gl_resolve_extensions();
     return QOpenGLExtensions::OpenGLExtensions(d->m_extensions);
diff --git a/src/gui/opengl/qopenglpaintengine.cpp b/src/gui/opengl/qopenglpaintengine.cpp
index 47394999c6..20cc2b5ae5 100644
--- a/src/gui/opengl/qopenglpaintengine.cpp
+++ b/src/gui/opengl/qopenglpaintengine.cpp
@@ -1575,7 +1575,7 @@ void QOpenGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, c
     case QImage::Format_ARGB32:
     case QImage::Format_RGBA64:
         d->shaderManager->setSrcPixelType(QOpenGLEngineShaderManager::NonPremultipliedImageSrc);
-        bindOption = 0;
+        bindOption = { };
         break;
     case QImage::Format_Alpha8:
         if (ctx->functions()->hasOpenGLFeature(QOpenGLFunctions::TextureRGFormats)) {
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 8314e8bc8a..722afaf119 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -1061,7 +1061,7 @@ void QPaintEngineEx::drawStaticTextItem(QStaticTextItem *staticTextItem)
 
     QFontEngine *fontEngine = staticTextItem->fontEngine();
     fontEngine->addGlyphsToPath(staticTextItem->glyphs, staticTextItem->glyphPositions,
-                                staticTextItem->numGlyphs, &path, 0);
+                                staticTextItem->numGlyphs, &path, { });
     if (!path.isEmpty()) {
         QPainterState *s = state();
         QPainter::RenderHints oldHints = s->renderHints;
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 3ce54c20be..4336ff66be 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -5902,7 +5902,7 @@ void QPainter::drawText(const QPointF &p, const QString &str, int tf, int justif
         int numGlyphs = len;
         QVarLengthGlyphLayoutArray glyphs(len);
         QFontEngine *fontEngine = d->state->font.d->engineForScript(QChar::Script_Common);
-        if (!fontEngine->stringToCMap(str.data(), len, &glyphs, &numGlyphs, 0))
+        if (!fontEngine->stringToCMap(str.data(), len, &glyphs, &numGlyphs, { }))
             Q_UNREACHABLE();
 
         QTextItemInt gf(glyphs, &d->state->font, str.data(), len, fontEngine);
@@ -6404,7 +6404,7 @@ Q_GUI_EXPORT void qt_draw_decoration_for_glyphs(QPainter *painter, const glyph_t
     }
 
     QFixed width = rightMost - leftMost;
-    QTextItem::RenderFlags flags = 0;
+    QTextItem::RenderFlags flags;
 
     if (font.underline())
         flags |= QTextItem::Underline;
@@ -7213,7 +7213,7 @@ QPainter::RenderHints QPainter::renderHints() const
     Q_D(const QPainter);
 
     if (!d->engine)
-        return 0;
+        return { };
 
     return d->state->renderHints;
 }
@@ -7795,7 +7795,7 @@ QPainterState::QPainterState()
       composition_mode(QPainter::CompositionMode_SourceOver),
       emulationSpecifier(0), changeFlags(0)
 {
-    dirtyFlags = 0;
+    dirtyFlags = { };
 }
 
 QPainterState::~QPainterState()
@@ -7824,9 +7824,9 @@ void QPainterState::init(QPainter *p) {
     layoutDirection = QGuiApplication::layoutDirection();
     composition_mode = QPainter::CompositionMode_SourceOver;
     emulationSpecifier = 0;
-    dirtyFlags = 0;
+    dirtyFlags = { };
     changeFlags = 0;
-    renderHints = 0;
+    renderHints = { };
     opacity = 1;
 }
 
@@ -7883,7 +7883,7 @@ void QPainterState::init(QPainter *p) {
 
 /*!
     \fn void QPainter::drawImage(const QPointF &point, const QImage &image, const QRectF &source,
-                                 Qt::ImageConversionFlags flags = 0)
+                                 Qt::ImageConversionFlags flags = Qt::AutoColor)
 
     \overload
 
@@ -7893,7 +7893,7 @@ void QPainterState::init(QPainter *p) {
 
 /*!
     \fn void QPainter::drawImage(const QPoint &point, const QImage &image, const QRect &source,
-                                 Qt::ImageConversionFlags flags = 0)
+                                 Qt::ImageConversionFlags flags = Qt::AutoColor)
     \overload
 
     Draws the rectangular portion \a source of the given \a image with
diff --git a/src/gui/painting/qplatformbackingstore.cpp b/src/gui/painting/qplatformbackingstore.cpp
index 45e90bd99b..0ecb4390e9 100644
--- a/src/gui/painting/qplatformbackingstore.cpp
+++ b/src/gui/painting/qplatformbackingstore.cpp
@@ -427,7 +427,7 @@ void QPlatformBackingStore::composeAndFlush(QWindow *window, const QRegion &regi
             origin = QOpenGLTextureBlitter::OriginBottomLeft;
         textureId = d_ptr->textureId;
     } else {
-        TextureFlags flags = 0;
+        TextureFlags flags;
         textureId = toTexture(deviceRegion(region, window, offset), &d_ptr->textureSize, &flags);
         d_ptr->needsSwizzle = (flags & TextureSwizzle) != 0;
         d_ptr->premultiplied = (flags & TexturePremultiplied) != 0;
@@ -534,7 +534,7 @@ GLuint QPlatformBackingStore::toTexture(const QRegion &dirtyRegion, QSize *textu
     GLuint pixelType = GL_UNSIGNED_BYTE;
 
     bool needsConversion = false;
-    *flags = 0;
+    *flags = { };
     switch (image.format()) {
     case QImage::Format_ARGB32_Premultiplied:
         *flags |= TexturePremultiplied;
diff --git a/src/gui/painting/qplatformbackingstore.h b/src/gui/painting/qplatformbackingstore.h
index 4f08b0092f..7aa054f1e2 100644
--- a/src/gui/painting/qplatformbackingstore.h
+++ b/src/gui/painting/qplatformbackingstore.h
@@ -100,7 +100,7 @@ public:
     bool isLocked() const;
 
     void appendTexture(void *source, GLuint textureId, const QRect &geometry,
-                       const QRect &clipRect = QRect(), Flags flags = nullptr);
+                       const QRect &clipRect = QRect(), Flags flags = { });
     void clear();
 
  Q_SIGNALS:
diff --git a/src/gui/text/qcssparser.cpp b/src/gui/text/qcssparser.cpp
index 793ef5774b..cf3d8e5ea2 100644
--- a/src/gui/text/qcssparser.cpp
+++ b/src/gui/text/qcssparser.cpp
@@ -682,7 +682,7 @@ bool ValueExtractor::extractOutline(int *borders, QBrush *colors, BorderStyle *s
 
 static Qt::Alignment parseAlignment(const QCss::Value *values, int count)
 {
-    Qt::Alignment a[2] = { 0, 0 };
+    Qt::Alignment a[2] = { { }, { } };
     for (int i = 0; i < qMin(2, count); i++) {
         if (values[i].type != Value::KnownIdentifier)
             break;
diff --git a/src/gui/text/qdistancefield.cpp b/src/gui/text/qdistancefield.cpp
index d8a971c7b7..89f943ca51 100644
--- a/src/gui/text/qdistancefield.cpp
+++ b/src/gui/text/qdistancefield.cpp
@@ -952,7 +952,7 @@ void QDistanceField::setGlyph(QFontEngine *fontEngine, glyph_t glyph, bool doubl
 {
     QFixedPoint position;
     QPainterPath path;
-    fontEngine->addGlyphsToPath(&glyph, &position, 1, &path, 0);
+    fontEngine->addGlyphsToPath(&glyph, &position, 1, &path, { });
     path.translate(-path.boundingRect().topLeft());
     path.setFillRule(Qt::WindingFill);
 
diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp
index 403a0510fa..3a1f5ed4f4 100644
--- a/src/gui/text/qfontengine.cpp
+++ b/src/gui/text/qfontengine.cpp
@@ -506,7 +506,7 @@ void QFontEngine::getGlyphPositions(const QGlyphLayout &glyphs, const QTransform
                 g.numGlyphs = 1;
                 g.glyphs = &kashidaGlyph;
                 g.advances = &kashidaWidth;
-                recalcAdvances(&g, 0);
+                recalcAdvances(&g, { });
 
                 for (uint k = 0; k < glyphs.justifications[i].nKashidas; ++k) {
                     xpos -= kashidaWidth;
@@ -948,7 +948,7 @@ QImage QFontEngine::alphaMapForGlyph(glyph_t glyph)
     im.fill(Qt::transparent);
     QPainter p(&im);
     p.setRenderHint(QPainter::Antialiasing);
-    addGlyphsToPath(&glyph, &pt, 1, &path, 0);
+    addGlyphsToPath(&glyph, &pt, 1, &path, { });
     p.setPen(Qt::NoPen);
     p.setBrush(Qt::black);
     p.drawPath(path);
diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp
index d3e4f11e8c..906047cdb4 100644
--- a/src/gui/text/qfontmetrics.cpp
+++ b/src/gui/text/qfontmetrics.cpp
@@ -562,7 +562,7 @@ int QFontMetrics::width(const QString &text, int len, int flags) const
         int numGlyphs = len;
         QVarLengthGlyphLayoutArray glyphs(numGlyphs);
         QFontEngine *engine = d->engineForScript(QChar::Script_Common);
-        if (!engine->stringToCMap(text.data(), len, &glyphs, &numGlyphs, 0))
+        if (!engine->stringToCMap(text.data(), len, &glyphs, &numGlyphs, { }))
             Q_UNREACHABLE();
 
         QFixed width;
@@ -684,7 +684,7 @@ int QFontMetrics::horizontalAdvance(QChar ch) const
     glyphs.numGlyphs = 1;
     glyphs.glyphs = &glyph;
     glyphs.advances = &advance;
-    engine->recalcAdvances(&glyphs, 0);
+    engine->recalcAdvances(&glyphs, { });
 
     return qRound(advance);
 }
@@ -736,7 +736,7 @@ int QFontMetrics::charWidth(const QString &text, int pos) const
         glyphs.numGlyphs = 1;
         glyphs.glyphs = &glyph;
         glyphs.advances = &advance;
-        engine->recalcAdvances(&glyphs, 0);
+        engine->recalcAdvances(&glyphs, { });
 
         width = qRound(advance);
     }
@@ -1619,7 +1619,7 @@ qreal QFontMetricsF::horizontalAdvance(QChar ch) const
     glyphs.numGlyphs = 1;
     glyphs.glyphs = &glyph;
     glyphs.advances = &advance;
-    engine->recalcAdvances(&glyphs, 0);
+    engine->recalcAdvances(&glyphs, { });
 
     return advance.toReal();
 }
diff --git a/src/gui/text/qglyphrun.cpp b/src/gui/text/qglyphrun.cpp
index 3c16c3bf62..f4cd839f15 100644
--- a/src/gui/text/qglyphrun.cpp
+++ b/src/gui/text/qglyphrun.cpp
@@ -279,7 +279,7 @@ void QGlyphRun::clear()
 {
     detach();
     d->rawFont = QRawFont();
-    d->flags = 0;
+    d->flags = { };
 
     setPositions(QVector<QPointF>());
     setGlyphIndexes(QVector<quint32>());
diff --git a/src/gui/text/qglyphrun_p.h b/src/gui/text/qglyphrun_p.h
index 465c3c7000..46e2a8bbfb 100644
--- a/src/gui/text/qglyphrun_p.h
+++ b/src/gui/text/qglyphrun_p.h
@@ -65,8 +65,7 @@ class QGlyphRunPrivate: public QSharedData
 {
 public:
     QGlyphRunPrivate()
-        : flags(nullptr)
-        , glyphIndexData(glyphIndexes.constData())
+        : glyphIndexData(glyphIndexes.constData())
         , glyphIndexDataSize(0)
         , glyphPositionData(glyphPositions.constData())
         , glyphPositionDataSize(0)
diff --git a/src/gui/text/qrawfont.cpp b/src/gui/text/qrawfont.cpp
index a060448924..e04c8909f3 100644
--- a/src/gui/text/qrawfont.cpp
+++ b/src/gui/text/qrawfont.cpp
@@ -303,7 +303,7 @@ QPainterPath QRawFont::pathForGlyph(quint32 glyphIndex) const
 
     QFixedPoint position;
     QPainterPath path;
-    d->fontEngine->addGlyphsToPath(&glyphIndex, &position, 1, &path, 0);
+    d->fontEngine->addGlyphsToPath(&glyphIndex, &position, 1, &path, { });
     return path;
 }
 
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp
index 209433dac5..40adc4a3cf 100644
--- a/src/gui/text/qtextengine.cpp
+++ b/src/gui/text/qtextengine.cpp
@@ -1720,7 +1720,7 @@ int QTextEngine::shapeTextWithHarfbuzzNG(const QScriptItem &si,
                         g.glyphs[i] = actualFontEngine->glyphIndex('-');
                         if (Q_LIKELY(g.glyphs[i] != 0)) {
                             QGlyphLayout tmp = g.mid(i, 1);
-                            actualFontEngine->recalcAdvances(&tmp, 0);
+                            actualFontEngine->recalcAdvances(&tmp, { });
                         }
                         g.attributes[i].dontPrint = true;
                     }
@@ -2581,7 +2581,7 @@ static void set(QJustificationPoint *point, int type, const QGlyphLayout &glyph,
             g.numGlyphs = 1;
             g.glyphs = &kashidaGlyph;
             g.advances = &point->kashidaWidth;
-            fe->recalcAdvances(&g, 0);
+            fe->recalcAdvances(&g, { });
 
             if (point->kashidaWidth == 0)
                 point->type = Justification_Prohibited;
@@ -3214,13 +3214,13 @@ QString QTextEngine::elidedText(Qt::TextElideMode mode, const QFixed &width, int
         glyphs.advances = &ellipsisWidth;
 
         if (glyph != 0) {
-            engine->recalcAdvances(&glyphs, 0);
+            engine->recalcAdvances(&glyphs, { });
 
             ellipsisText = ellipsisChar;
         } else {
             glyph = engine->glyphIndex('.');
             if (glyph != 0) {
-                engine->recalcAdvances(&glyphs, 0);
+                engine->recalcAdvances(&glyphs, { });
 
                 ellipsisWidth *= 3;
                 ellipsisText = QStringLiteral("...");
@@ -3928,7 +3928,7 @@ void QTextItemInt::initWithScriptItem(const QScriptItem &si)
 {
     // explicitly initialize flags so that initFontAttributes can be called
     // multiple times on the same TextItem
-    flags = 0;
+    flags = { };
     if (si.analysis.bidiLevel %2)
         flags |= QTextItem::RightToLeft;
     ascent = si.ascent;
diff --git a/src/gui/util/qgridlayoutengine.cpp b/src/gui/util/qgridlayoutengine.cpp
index 33adac40b2..024f0f084e 100644
--- a/src/gui/util/qgridlayoutengine.cpp
+++ b/src/gui/util/qgridlayoutengine.cpp
@@ -1147,7 +1147,7 @@ QLayoutPolicy::ControlTypes QGridLayoutEngine::controlTypes(LayoutSide side) con
     Qt::Orientation orientation = (side == Top || side == Bottom) ? Qt::Vertical : Qt::Horizontal;
     int row = (side == Top || side == Left) ? effectiveFirstRow(orientation)
                                             : effectiveLastRow(orientation);
-    QLayoutPolicy::ControlTypes result = 0;
+    QLayoutPolicy::ControlTypes result;
 
     for (int column = columnCount(orientation) - 1; column >= 0; --column) {
         if (QGridLayoutItem *item = itemAt(row, column, orientation))
diff --git a/src/gui/util/qgridlayoutengine_p.h b/src/gui/util/qgridlayoutengine_p.h
index 5f0e84edb1..181326103b 100644
--- a/src/gui/util/qgridlayoutengine_p.h
+++ b/src/gui/util/qgridlayoutengine_p.h
@@ -276,7 +276,7 @@ class Q_GUI_EXPORT QGridLayoutItem
 {
 public:
     QGridLayoutItem(int row, int column, int rowSpan = 1, int columnSpan = 1,
-                    Qt::Alignment alignment = nullptr);
+                    Qt::Alignment alignment = { });
     virtual ~QGridLayoutItem() {}
 
     inline int firstRow() const { return q_firstRows[Ver]; }
@@ -339,7 +339,7 @@ private:
 class Q_GUI_EXPORT QGridLayoutEngine
 {
 public:
-    QGridLayoutEngine(Qt::Alignment defaultAlignment = Qt::Alignment(nullptr), bool snapToPixelGrid = false);
+    QGridLayoutEngine(Qt::Alignment defaultAlignment = { }, bool snapToPixelGrid = false);
     inline ~QGridLayoutEngine() { qDeleteAll(q_items); }
 
     int rowCount(Qt::Orientation orientation) const;
diff --git a/src/gui/vulkan/qvulkanwindow_p.h b/src/gui/vulkan/qvulkanwindow_p.h
index 777be237a8..915e359673 100644
--- a/src/gui/vulkan/qvulkanwindow_p.h
+++ b/src/gui/vulkan/qvulkanwindow_p.h
@@ -97,7 +97,7 @@ public:
     int physDevIndex = 0;
     QVector<VkPhysicalDevice> physDevs;
     QVector<VkPhysicalDeviceProperties> physDevProps;
-    QVulkanWindow::Flags flags = nullptr;
+    QVulkanWindow::Flags flags;
     QByteArrayList requestedDevExtensions;
     QHash<VkPhysicalDevice, QVulkanInfoVector<QVulkanExtension> > supportedDevExtensions;
     QVector<VkFormat> requestedColorFormats;