May 13, 2010 Patch (Portal)

{{Patch layout
 * game = portal
 * source      = http://store.steampowered.com/news/3825/
 * source-title = Portal Update Released
 * before      = March 3, 2010 Patch (Portal)
 * after       = May 15, 2010 Patch (Portal)
 * notes       =

Portal
}}
 * 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  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  convar, on Snow Leopard or better you can set this to have Portal still visible when it is not the foreground application