Nvidia GeForce GTX 980 White Paper page 26

MAXWELL: ENABLING THE NEXT
GeForce GTX 980 Whitepaper FRONTIER IN PC GRAPHICS
In addition, the DX12 release of DirectX will introduce a number of new features for graphics rendering.
Microsoft has disclosed some of these features, at GDC and during NVIDIA's Editor's conference.
Conservative Raster, discussed earlier in the GI section of this paper, is one such DX graphics feature.
Another is Raster Ordered Views (ROVs,) which gives developers control over the ordering pixel shader
operations. GM2xx supports both Conservative Raster and ROVs. The new graphics features included in
DX12 will be accessible from either DX11 or DX12 so developers will be free to use these new features
with either the DX11 or DX12 APIs on GPUs that implement the features in hardware.
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