Editing Direct3D (section)

===Direct3D 11.1===
'''Direct3D 11.1'''<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/desktop/hh404562(v=vs.85).aspx|title=Direct3D 11.1 Features|publisher=MSDN|access-date=30 September 2014}}</ref><ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/desktop/hh404457(v=vs.85).aspx|title=D3D11_FEATURE_DATA_D3D11_OPTIONS structure|publisher=MSDN|access-date=30 September 2014}}</ref> is an update to the API that ships with [[Windows 8]].<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/hardware/dn653328(v=vs.85).aspx#tir|title=DirectX feature improvements in Windows 8|publisher=MSDN|access-date=30 September 2014}}</ref><ref name="D3D11.1_Features">{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/desktop/hh404562 |title=Direct3D 11.1 Features|access-date=2009-09-13 |publisher=MSDN}}</ref> The Direct3D runtime in Windows 8 features [[DirectX Graphics Infrastructure|DXGI]] 1.2<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/desktop/hh404490(v=vs.85).aspx|title=DXGI 1.2 Improvements|publisher=MSDN|access-date=30 September 2014}}</ref> and requires new [[Windows Display Driver Model|WDDM 1.2]]<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/hardware/dn653373(v=vs.85).aspx|title=WDDM 1.2 features|publisher=MSDN|access-date=30 September 2014}}</ref> device drivers.<ref name=wddm_w8>{{cite web| url=http://msdn.microsoft.com/en-us/library/windows/hardware/br259098 |title=Windows Display Driver Model Enhancements in Windows Developer Preview|date=2011-09-13| publisher=MSDN}}</ref> Preliminary version of the Windows SDK for Windows 8 Developer Preview was released on September 13, 2011.

The new API features shader [[Tracing (software)|tracing]] and HLSL compiler enhancements, support for minimum precision HLSL scalar data types,<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/windows/desktop/bb509646(v=vs.85).aspx|title=Scalar Types|access-date=2 October 2014}}</ref> UAVs (Unordered Access Views) at every pipeline stage, target-independent rasterization (TIR), option to map SRVs of dynamic buffers with NO_OVERWRITE, shader processing of video resources, option to use logical operations in a render target, option to bind a subrange of a constant buffer to a shader and retrieve it, option to create larger constant buffers than a shader can access, option to discard resources and resource views, option to change subresources with new copy options, option to force the sample count to create a rasterizer state, option to clear all or part of a resource view, option to use Direct3D in Session 0 processes, option to specify user clip planes in HLSL on feature level 9 and higher, support for [[shadow buffer]] on feature level 9, support for video playback, extended support for shared Texture2D resources, and on-the-fly swapping between Direct3D 10 and 11 contexts and feature levels. Direct3D 11.1 includes new feature level 11_1, which brings minor updates to the shader language, such as larger constant buffers and optional double-precision instructions, as well as improved blending modes and mandatory support for 16-bit color formats to improve the performance of entry-level GPUs such as [[Intel HD Graphics]].<ref name=wddm_w8/><ref name="intelDX11.1">{{cite web| url=http://www.anandtech.com/show/4585/intels-haswell-igp-to-feature-directx-111-increased-professional-application-support |title=Intel's Haswell IGP to Feature DirectX 11.1, Increased Professional Application Support|date=2011-08-05|publisher=AnandTech}}</ref> WARP has been updated to support feature level 11_1.

The [[Windows 7#Platform Update|Platform Update]] for [[Windows 7]] includes a limited set of features from Direct3D 11.1, though components that depend on WDDM 1.2 – such as [[#Feature levels|feature level]] 11_1 and its related APIs, or [[quad buffering]] for [[stereoscopic]] rendering – are not present.<ref name=W7PU_MSDN>{{cite web | url = http://msdn.microsoft.com/en-us/library/jj863687.aspx| title = DirectX Graphics – Platform Update for Windows 7 |date=2012-11-14| publisher=MSDN}}</ref><ref name=D3D11.1W7>{{cite web | url = http://blogs.msdn.com/b/chuckw/archive/2012/11/14/directx-11-1-and-windows-7.aspx| title = DirectX 11.1 and Windows 7 | work = Games for Windows and the DirectX SDK Blog | date = November 13, 2012}}</ref>