Updates to Portal have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

  • Fixed screen "fuzziness" caused by color correction operation
    Fixed text not rendering in game if font Tahoma was disabled
    Fixed startup video not playing fullscreen
    Added optional -snd_openal command line parameter to force the engine to use the OpenAL api, can be used if Portal is playing no audio when launched normally
    Added mac_fsbackground convar, on Snow Leopard or better you can set this to have Portal still visible when it is not the foreground application