Build: ------- In the directory demo/external clone the following repositories: $ git clone https://github.com/jtsiomb/gph-math.git $ git clone https://github.com/jtsiomb/libimago.git and build/install the libraries. In the root (demo) directory run: $ make Run: ----- To use the OpenGl backend: $ ./demo -opengl To use the Vulkan backend: $ ./demo -vulkan Default: $ ./demo (uses the OpenGL backend) Use mouse motion + left click to rotate the camera and right click + mouse motion to zoom in/out.