• handle macOS fullscreen rendering in a less overengineered way
• added 1920x1200 screen resolution
• rebuilt shaders using glslangValidator embedded with Vulkan SDK 1.2.170.0
• the application now enables VK_KHR_portability_subset extension if it's supported by the device to conform with the Vulkan specs
• Windows: the game is now properly toggling between game's fullscreen and desktop's resolutions when alt-tabbing
• removed the non-functional vk_bitdepth command
• changed the initial value of vk_sampleshading to 0 due to a potential bug in the Metal driver which causes a deadlock during shader compilation