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Dette innholdet er ikke tilgjengelig på ditt språk, men her er den engelske versjonen.

D3D11_FEATURE_DATA_D3D11_OPTIONS structure

Note  This structure is supported by the Direct3D 11.1 runtime, which is available on Windows 8 and later operating systems.

Describes Direct3D 11.1 feature options in the current graphics driver.

Syntax


typedef struct D3D11_FEATURE_DATA_D3D11_OPTIONS {
  BOOL OutputMergerLogicOp;
  BOOL UAVOnlyRenderingForcedSampleCount;
  BOOL DiscardAPIsSeenByDriver;
  BOOL FlagsForUpdateAndCopySeenByDriver;
  BOOL ClearView;
  BOOL CopyWithOverlap;
  BOOL ConstantBufferPartialUpdate;
  BOOL ConstantBufferOffsetting;
  BOOL MapNoOverwriteOnDynamicConstantBuffer;
  BOOL MapNoOverwriteOnDynamicBufferSRV;
  BOOL MultisampleRTVWithForcedSampleCountOne;
  BOOL SAD4ShaderInstructions;
  BOOL ExtendedDoublesShaderInstructions;
  BOOL ExtendedResourceSharing;
} D3D11_FEATURE_DATA_D3D11_OPTIONS;

Members

OutputMergerLogicOp

Specifies whether logic operations are available in blend state. The runtime sets this member to TRUE if logic operations are available in blend state and FALSE otherwise. This member is FALSE for feature level 9.1, 9.2, and 9.3. This member is optional for feature level 10, 10.1, and 11. This member is TRUE for feature level 11.1.

UAVOnlyRenderingForcedSampleCount

Specifies whether the driver can render with no render target views (RTVs) or depth stencil views (DSVs), and only unordered access views (UAVs) bound. The runtime sets this member to TRUE if the driver can render with no RTVs or DSVs and only UAVs bound and FALSE otherwise. If TRUE, you can set the ForcedSampleCount member of D3D11_RASTERIZER_DESC1 to 1, 4, or 8 when you render with no RTVs or DSV and only UAVs bound. For feature level 11.1, this member is always TRUE and you can also set ForcedSampleCount to 16 in addition to 1, 4, or 8. The default value of ForcedSampleCount is 0, which means the same as if the value is set to 1. You can always set ForcedSampleCount to 0 or 1 for UAV-only rendering independently of how this member is set.

DiscardAPIsSeenByDriver

Specifies whether the driver supports the ID3D11DeviceContext1::DiscardView and ID3D11DeviceContext1::DiscardResource methods. The runtime sets this member to TRUE if the driver supports these methods and FALSE otherwise. How this member is set does not indicate whether the driver actually uses these methods; that is, the driver might ignore these methods if they are not useful to the hardware. If FALSE, the runtime does not expose these methods to the driver because the driver does not support them. You can monitor this member during development to rule out legacy drivers on hardware where these methods might have otherwise been beneficial. You are not required to write separate code paths based on whether this member is TRUE or FALSE; you can call these methods whenever applicable.

FlagsForUpdateAndCopySeenByDriver

Specifies whether the driver supports new semantics for copy and update that are exposed by the ID3D11DeviceContext1::CopySubresourceRegion1 and ID3D11DeviceContext1::UpdateSubresource1 methods. The runtime sets this member to TRUE if the driver supports new semantics for copy and update. The runtime sets this member to FALSE only for legacy drivers. The runtime handles this member similarly to the DiscardAPIsSeenByDriver member.

ClearView

Specifies whether the driver supports the ID3D11DeviceContext1::ClearView method. The runtime sets this member to TRUE if the driver supports this method and FALSE otherwise. If FALSE, the runtime does not expose this method to the driver because the driver does not support it.

Note  For feature level 9.1, 9.2, and 9.3, this member is always TRUE because the option is emulated by the runtime.

CopyWithOverlap

Specifies whether you can call ID3D11DeviceContext1::CopySubresourceRegion1 with overlapping source and destination rectangles. The runtime sets this member to TRUE if you can call CopySubresourceRegion1 with overlapping source and destination rectangles and FALSE otherwise. If FALSE, the runtime does not expose this method to the driver because the driver does not support it.

Note  For feature level 9.1, 9.2, and 9.3, this member is always TRUE because drivers already support the option for these feature levels.

ConstantBufferPartialUpdate

Specifies whether the driver supports partial updates of constant buffers. The runtime sets this member to TRUE if the driver supports partial updates of constant buffers and FALSE otherwise. If FALSE, the runtime does not expose this operation to the driver because the driver does not support it.

Note  For feature level 9.1, 9.2, and 9.3, this member is always TRUE because the option is emulated by the runtime.

ConstantBufferOffsetting

Specifies whether the driver supports new semantics for setting offsets in constant buffers for a shader. The runtime sets this member to TRUE if the driver supports allowing you to specify offsets when you call new methods like the ID3D11DeviceContext1::VSSetConstantBuffers1 method and FALSE otherwise. If FALSE, the runtime does not expose this operation to the driver because the driver does not support it.

Note  For feature level 9.1, 9.2, and 9.3, this member is always TRUE because the option is emulated by the runtime.

MapNoOverwriteOnDynamicConstantBuffer

Specifies whether you can call ID3D11DeviceContext::Map with D3D11_MAP_WRITE_NO_OVERWRITE on a dynamic constant buffer (that is, whether the driver supports this operation). The runtime sets this member to TRUE if the driver supports this operation and FALSE otherwise. If FALSE, the runtime fails this method because the driver does not support the operation.

Note  For feature level 9.1, 9.2, and 9.3, this member is always TRUE because the option is emulated by the runtime.

MapNoOverwriteOnDynamicBufferSRV

Specifies whether you can call ID3D11DeviceContext::Map with D3D11_MAP_WRITE_NO_OVERWRITE on a dynamic buffer SRV (that is, whether the driver supports this operation). The runtime sets this member to TRUE if the driver supports this operation and FALSE otherwise. If FALSE, the runtime fails this method because the driver does not support the operation.

MultisampleRTVWithForcedSampleCountOne

Specifies whether the driver supports multisample rendering when you render with RTVs bound. If TRUE, you can set the ForcedSampleCount member of D3D11_RASTERIZER_DESC1 to 1 with a multisample RTV bound. The driver can support this option on feature level 10 and higher. If FALSE, the rasterizer-state creation will fail because the driver is legacy or the feature level is too low.

SAD4ShaderInstructions

Specifies whether the hardware and driver support the msad4 intrinsic function in shaders. The runtime sets this member to TRUE if the hardware and driver support calls to msad4 intrinsic functions in shaders. If FALSE, the driver is legacy or the hardware does not support the option; the runtime will fail shader creation for shaders that use msad4.

ExtendedDoublesShaderInstructions

Specifies whether the hardware and driver support the fma intrinsic function and other extended doubles instructions (DDIV and DRCP) in shaders. The fma intrinsic function emits an extended doubles DFMA instruction. The runtime sets this member to TRUE if the hardware and driver support extended doubles instructions in shaders (shader model 5 and higher). Support of this option implies support of basic double-precision shader instructions as well. You can use the D3D11_FEATURE_DOUBLES value to query for support of double-precision shaders. If FALSE, the hardware and driver do not support the option; the runtime will fail shader creation for shaders that use extended doubles instructions.

ExtendedResourceSharing

Specifies whether the hardware and driver support sharing a greater variety of Texture2D resource types and formats. The runtime sets this member to TRUE if the hardware and driver support extended Texture2D resource sharing.

Remarks

If a Microsoft Direct3D device supports feature level 11.1 (D3D_FEATURE_LEVEL_11_1), when you call ID3D11Device::CheckFeatureSupport with D3D11_FEATURE_D3D11_OPTIONS, CheckFeatureSupport returns a pointer to D3D11_FEATURE_DATA_D3D11_OPTIONS with all member set to TRUE except the SAD4ShaderInstructions and ExtendedDoublesShaderInstructions members, which are optionally supported by the hardware and driver and therefore can be TRUE or FALSE.

Feature level 11.1 provides the following additional features:

  • UAVs at every shader stage with 64 UAV bind slots instead of 8.
  • Target-independent rasterization, which enables you to set the ForcedSampleCount member of D3D11_RASTERIZER_DESC1 to 1, 4, 8, or 16 and to render to RTVs with a single sample.
  • UAV-only rendering with the ForcedSampleCount member of D3D11_RASTERIZER_DESC1 set to up to 16 (only up to 8 for feature level 11).

The runtime always sets the following groupings of members identically. That is, all the values in a grouping are TRUE or FALSE together:

  • DiscardAPIsSeenByDriver and FlagsForUpdateAndCopySeenByDriver
  • ClearView, CopyWithOverlap, ConstantBufferPartialUpdate, ConstantBufferOffsetting, and MapNoOverwriteOnDynamicConstantBuffer
  • MapNoOverwriteOnDynamicBufferSRV and MultisampleRTVWithForcedSampleCountOne

Requirements

Minimum supported client

Windows 8 and Platform Update for Windows 7 [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps | Windows Store apps]

Header

D3D11.h

See also

D3D11_FEATURE

 

 

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