GetVesaModeNumber
uint16 GetVesaModeNumber(const display_mode& mode, uint8 bitsPerPixel);
uint16 GetVesaModeNumber(const display_mode& mode, uint8 bitsPerPixel);
uint16 vesaMode = GetVesaModeNumber(display_mode(mode), mode.bitsPerPixel);
if (GetVesaModeNumber(*mode, bitsPerPixel) == 0)
uint16 vesaMode = GetVesaModeNumber(display_mode(mode), mode.bitsPerPixel);