Want to add support for multiple graphics cards

[nangua928]

If you have two identical graphics cards on a device, you may find the wrong one based on the name.

[darksylinc]

Hi!

OgreNext appends a number to the GPU devices when they're repeated.

So if you have e.g. two GeForce 1080 then it would list as:

• GeForce 1080 #1
• GeForce 1080 #2

Is that not the case? Beware only D3D11 and Vulkan allow selecting which GPU device to use; and there are no plans for OpenGL (OpenGL has limited device selection if you're using the headless option though; but that's for a very specific use case in linux/freebsd servers with no monitors attached).