I'm using WSL2 on Ubuntu 18.04 to run Ruby code in Windows 10. For example, running Ruby on Rails is easily done with no special setup required.
In case of Ruby2D: The installation went fine but, I get an error when running any Ruby2D file, even the most basic one:
require 'ruby2d'
show
I get this error in Console:
error: XDG_RUNTIME_DIR not set in the environment.
Error: (SDL_Init) No available video device
error: XDG_RUNTIME_DIR not set in the environment.
Error: (SDL_CreateWindow) No available video device
Error: (GL2 / SDL_GL_CreateContext) Video subsystem has not been initialized
Error: An OpenGL context could not be created
How do I "add" (or config) a "video device" to my Ubuntu on the WSL2?