Naked Snake
Member
It is an open source multi platform graphics API developed by the Khronos Group. It is a replacement for the old OpenGL API that Khronos has been maintaining since 1998. It is also an alternative to Microsoft's DirectX 12. Right now Vulkan is still a bit in it's infancy, and Doom makes the best use of it in a game and it gets much better performance than Doom's OpenGL renderer.
Thanks for the explanation... I kinda knew it was a graphics API but didn't know it was developed by same people who did OpenGL and that it's supposed to replace it.