[REG 5.4.2->5.5.0] QSGGeometry::setLineWidth has no effect anymore with drawingMode GL_LINES

Setting lineWidth used to work with GL_LINES in Qt 5.4.2, tested both on Windows Desktop and android. Logging qpa.gl shows that in both windows versions (5.4.2 vs. 5.5.0) OpenGL (and not ANGLE) is used. GL_LINE_STRIP works fine in 5.5.0, though.

Code snippet:

QSGNode* Line::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
QSGGeometryNode* node = static_cast<QSGGeometryNode*>(oldNode);
if(!node)

{ node = new QSGGeometryNode; QSGGeometry *geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 2); QSGFlatColorMaterial *material = new QSGFlatColorMaterial; node->setGeometry(geometry); node->setFlag(QSGNode::OwnsGeometry); node->setMaterial(material); node->setFlag(QSGNode::OwnsMaterial); node->geometry()->setDrawingMode(GL_LINES); }

node->geometry()->setLineWidth(20); // since Qt 5.5.0, this has no more effect - resulting lineWidth is always 1

node->geometry()->vertexDataAsPoint2D()[0].set(m_p1.x(), m_p1.y());
node->geometry()->vertexDataAsPoint2D()[1].set(m_p2.x(), m_p2.y());

QSGFlatColorMaterial* flatmaterial = static_cast<QSGFlatColorMaterial*>(node->material());
flatmaterial->setColor(m_color);

node->markDirty(QSGNode::DirtyGeometry);

return node;
}