WPF_CTRL_VFLIP
flip |= BIT(WPF_CTRL_VFLIP);
flip ^= BIT(WPF_CTRL_VFLIP) | BIT(WPF_CTRL_HFLIP);
const unsigned int mask = BIT(WPF_CTRL_VFLIP)
if (wpf->flip.active & BIT(WPF_CTRL_VFLIP))
else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate)
if (flip & BIT(WPF_CTRL_VFLIP)) {