Brush transformations are not supported by the PDF engine

#include <QGuiApplication>
#include <QImage>
#include <QPainter>
#include <QPdfWriter>
static const int TEXTURE_SIZE = 64;
static const int PAINT_SCALE = 40;
static const int PAINT_SIZE = 256;
static QImage createTexture() {
 QImage image(TEXTURE_SIZE, TEXTURE_SIZE, QImage::Format_ARGB32);
 QPainter p(&image);
 p.setPen(Qt::NoPen);
 p.fillRect(0, 0, TEXTURE_SIZE, TEXTURE_SIZE, Qt::red);
 p.setBrush(QBrush(Qt::white, Qt::BDiagPattern));
 p.drawRect(0, 0, TEXTURE_SIZE, TEXTURE_SIZE);
 p.end();
 return image;
}
static void drawOnPainter(QPainter *painter) {
 painter->setPen(Qt::NoPen);
 painter->scale(PAINT_SCALE, PAINT_SCALE);
 QBrush brush(createTexture());
 brush.setTransform(painter->worldTransform().inverted());
 painter->setBrush(brush);
 painter->drawRect(0, 0, PAINT_SIZE, PAINT_SIZE);
}
static void drawOnPdf() {
 QPdfWriter pdf("test.pdf");
 pdf.setResolution(72);
 pdf.setPageSize(QPageSize::A4);
 QPainter p(&pdf);
 drawOnPainter(&p);
 p.end();
}
static void drawOnImage() {
 QImage i(700, 700, QImage::Format_ARGB32);
 QPainter p(&i);
 drawOnPainter(&p);
 p.end();
 i.save("test.png");
}
int main (int argc, char **argv) {
 QGuiApplication app(argc, argv);
 drawOnPdf();
 drawOnImage();
 return 0;
}