An update has been released for Portal 2. Improvements: - Implemented a Vulkan render backend (currently accessible through the -vulkan command line parameter). - Improved compile time for Perpetual Training Initiative puzzles. - Improved advanced video settings descriptions. - Made the game Hi-DPI aware. - Smarter default video settings. - Improved resolution of player avatars throughout the game. - Players can now be invited to play co-op on controller. - Button text contrast and padding has been improved when using a controller. - Implemented a 360° Spin action. - The portalgun is now correctly affected by dynamic lights (projected textures) in the scene. - Improved client-side prediction for coop play. - Added the ability for workshop levels to pack particles into their map with a particles/map_manifest.txt - Misc. rendering optimizations. - Added an icon to the game on Linux. - Removed the 'Trading Coming Soon' button. Bug Fixes: - Fixed a crash on startup that could happen on Linux. - Fixed a crash that could occur in some community test chambers using BEEMod on Linux. - Fixed the credits being corrupted on Linux. - Fixed the intro videos for acts 2 and 3 not playing on Linux. - Fixed the game starting in the top left corner of the screen on Linux. - Fixed a crash in the PeTI if you placed a light strip above a laser catcher on the floor and linked it to a fizzler. - Fixed the fizzler not playing the retract animation when turned off in new PeTI maps. - Fixed being able to copy 'uncopyable' items in the PeTI leading to invalid/broken levels. - Fixed some items in PeTI not maintaining their portalability state when expanding the chamber boundaries. - Fixed a crash if PeTI avatars could not be retrieved. - Fixed Cave Johnson's lines not progressing when playing queued workshop levels. - Fixed a memory leak that could occur when changing levels. - Fixed a bug where you could no longer ping/taunt via mouse/keyboard if you have ever used a controller. - Fixed the ping menu being visible when quick pinging on controller. - Fixed the game instructor not respecting input types for respective players in split-screen mode. - Fixed rumble not being respected for respective players in split-screen mode. - Fixed the wrong avatar being used if playing coop after playing a workshop level. - Fixed the OnFiredPortal2 output not firing. - Fixed some text being duplicated on the screen multiple times.

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