February 18, 2021 Patch

Patch notes

Implemented a Vulkan render backend (currently accessible through the -vulkan command line parameter).
Improved compile time for Perpetual Training^(sic) 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^(sic) 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.

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.