message: TextureViewer: fix wheel zooming on HiDPI screens
  Without adjusting for pixel ratio it zoomed in into a wrong place.
diff: @@ -2207,7 +2207,8 @@ void TextureViewer::render_mouseWheel(QWheelEvent *e)
  // scroll in logarithmic scale
  double logScale = logf(m_TexDisplay.scale);
  logScale += e->delta() / 2500.0;
  - UI_SetScale((float)expf(logScale), cursorPos.x(), cursorPos.y());
  + UI_SetScale((float)expf(logScale), cursorPos.x() * ui->render->devicePixelRatio(),
  + cursorPos.y() * ui->render->devicePixelRatio());
  e->accept();
  }
  