GSdx: Purge D3D11 Software

[tadanokojin]

1.6.0:

This PR:

1.6.0:

This PR:

F9 has been modified on Windows to have the following functionality:

• If the renderer in the config is D3D11, switch between D3D11 and SW
• If the renderer in the config is OGL, switch between OGL and SW
• If the renderer in the config is SW, switch between SW and the renderer returned by GetBestRenderer()

[ghost]

Small nitpick, I think the "Direct 3D" name should be changed to "DirectX". Also, I am not in favor of the "null" name but that's subjective.

[refractionpcsx2]

Small nitpick, I think the "Direct 3D" name should be changed to "DirectX". Also, I am not in favor of the "null" name but that's subjective.

DirectX is the suite of API tools, Direct3D is the graphics API component

[ghost]

Oh ok, well in that case Direct3D is fine.

[tadanokojin]

I went with Null because it matches the logo which uses the ∅ symbol. It's also referred internally as Null but it doesn't really matter to me, I can change it back to "None" if it bothers anyone.

[RedDevilus]

It matches the plugin names for FW,USB and DEV too. Seems fine to me.

[beaumanvienna]

@tadanokojin For renderer == "Software", is that not based on any hardware acceleration at all? What's the difference between "OpenGL" and "Software"?

[refractionpcsx2]

Software mode uses an OpenGL interface to display the picture. But it doesn't use any of the hardware renderer code afaik

[tadanokojin]

@beaumanvienna
Software: scene rasterized on the CPU
OpenGL/DX11: scene rasterized on the GPU
both: display merger and post-process (external shader, FXAA, deinterlace) performed on the GPU