排除延迟上下文的 DDI 函数

本部分仅适用于 Windows 7 及更高版本以及 Windows Server 2008 R2 及更高版本的 Windows 操作系统。

当 Microsoft Direct3D 运行时调用用户模式显示驱动程序的 CreateDeferredContext 函数来创建延迟上下文时，驱动程序会提供运行时可为该延迟上下文调用的函数。 驱动程序填充 D3D11DDIARG_CREATEDEFERREDCONTEXT 结构的 p11ContextFuncs 成员指向 的 D3D11DDI_DEVICEFUNCS 结构的成员。 驱动程序仅为延迟上下文提供函数子集，就像驱动程序为即时上下文提供函数子集一样。

驱动程序通过将 D3D11DDI_DEVICEFUNCS 或 D3D11_1DDI_DEVICEFUNCS 的以下成员设置为 NULL 来排除延迟上下文的许多函数：

typedef struct D3D11DDI_DEVICEFUNCS {
...
  PFND3D10DDI_RESOURCEMAP  pfnStagingResourceMap;
  PFND3D10DDI_RESOURCEUNMAP  pfnStagingResourceUnmap;
  PFND3D10DDI_QUERYGETDATA  pfnQueryGetData;
  PFND3D10DDI_FLUSH  pfnFlush;
  PFND3D10DDI_RESOURCEMAP  pfnResourceMap;
  PFND3D10DDI_RESOURCEUNMAP  pfnResourceUnmap;
  PFND3D10DDI_RESOURCEISSTAGINGBUSY  pfnResourceIsStagingBusy;
  PFND3D11DDI_CALCPRIVATERESOURCESIZE  pfnCalcPrivateResourceSize;
  PFND3D10DDI_CALCPRIVATEOPENEDRESOURCESIZE  pfnCalcPrivateOpenedResourceSize;
  PFND3D10DDI_OPENRESOURCE  fnOpenResource;
  PFND3D11DDI_CALCPRIVATESHADERRESOURCEVIEWSIZE  pfnCalcPrivateShaderResourceViewSize;
  PFND3D10DDI_CALCPRIVATERENDERTARGETVIEWSIZE  pfnCalcPrivateRenderTargetViewSize;
  PFND3D11DDI_CALCPRIVATEDEPTHSTENCILVIEWSIZE  pfnCalcPrivateDepthStencilViewSize;
  PFND3D10DDI_CALCPRIVATEELEMENTLAYOUTSIZE  pfnCalcPrivateElementLayoutSize;
  PFND3D10_1DDI_CALCPRIVATEBLENDSTATESIZE  pfnCalcPrivateBlendStateSize;
  PFND3D10DDI_CALCPRIVATEDEPTHSTENCILSTATESIZE  pfnCalcPrivateDepthStencilStateSize;
  PFND3D10DDI_CALCPRIVATERASTERIZERSTATESIZE  pfnCalcPrivateRasterizerStateSize;
  PFND3D10DDI_CALCPRIVATESHADERSIZE  pfnCalcPrivateShaderSize;
  PFND3D11DDI_CALCPRIVATEGEOMETRYSHADERWITHSTREAMOUTPUT  pfnCalcPrivateGeometryShaderWithStreamOutput;
  PFND3D10DDI_CALCPRIVATESAMPLERSIZE  pfnCalcPrivateSamplerSize;
  PFND3D10DDI_CALCPRIVATEQUERYSIZE  pfnCalcPrivateQuerySize;
  PFND3D10DDI_CHECKFORMATSUPPORT  pfnCheckFormatSupport;
  PFND3D10DDI_CHECKMULTISAMPLEQUALITYLEVELS  pfnCheckMultisampleQualityLevels;
  PFND3D10DDI_CHECKCOUNTERINFO  pfnCheckCounterInfo;
  PFND3D10DDI_CHECKCOUNTER  pfnCheckCounter;
  PFND3D11DDI_CHECKDEFERREDCONTEXTHANDLESIZES  pfnCheckDeferredContextHandleSizes;
  PFND3D11DDI_CALCDEFERREDCONTEXTHANDLESIZE  pfnCalcDeferredContextHandleSize;
  PFND3D11DDI_CALCPRIVATEDEFERREDCONTEXTSIZE  pfnCalcPrivateDeferredContextSize;
  PFND3D11DDI_CREATEDEFERREDCONTEXT  pfnCreateDeferredContext;
  PFND3D11DDI_CALCPRIVATECOMMANDLISTSIZE  pfnCalcPrivateCommandListSize;
  PFND3D11DDI_CALCPRIVATETESSELLATIONSHADERSIZE  pfnCalcPrivateTessellationShaderSize;
  PFND3D11DDI_CALCPRIVATEUNORDEREDACCESSVIEWSIZE  pfnCalcPrivateUnorderedAccessViewSize;
  PFND3D11DDI_SETRESOURCEMINLOD  pfnSetResourceMinLOD;
} D3D11DDI_DEVICEFUNCS;

typedef struct D3D11_1DDI_DEVICEFUNCS {
...
  PFND3D10DDI_RESOURCEMAP  pfnStagingResourceMap;
  PFND3D10DDI_RESOURCEUNMAP  pfnStagingResourceUnmap;
  PFND3D10DDI_QUERYGETDATA  pfnQueryGetData;
  PFND3D11_1DDI_FLUSH  pfnFlush;
  PFND3D10DDI_RESOURCEMAP  pfnResourceMap;
  PFND3D10DDI_RESOURCEUNMAP  pfnResourceUnmap;
  PFND3D10DDI_RESOURCEISSTAGINGBUSY  pfnResourceIsStagingBusy;
  PFND3D11DDI_CALCPRIVATERESOURCESIZE  pfnCalcPrivateResourceSize;
  PFND3D10DDI_CALCPRIVATEOPENEDRESOURCESIZE  pfnCalcPrivateOpenedResourceSize;
  PFND3D10DDI_OPENRESOURCE  fnOpenResource;
  PFND3D11DDI_CALCPRIVATESHADERRESOURCEVIEWSIZE  pfnCalcPrivateShaderResourceViewSize;
  PFND3D10DDI_CALCPRIVATERENDERTARGETVIEWSIZE  pfnCalcPrivateRenderTargetViewSize;
  PFND3D11DDI_CALCPRIVATEDEPTHSTENCILVIEWSIZE  pfnCalcPrivateDepthStencilViewSize;
  PFND3D10DDI_CALCPRIVATEELEMENTLAYOUTSIZE  pfnCalcPrivateElementLayoutSize;
  PFND3D11_1DDI_CALCPRIVATEBLENDSTATESIZE  pfnCalcPrivateBlendStateSize;
  PFND3D10DDI_CALCPRIVATEDEPTHSTENCILSTATESIZE  pfnCalcPrivateDepthStencilStateSize;
  PFND3D11_1DDI_CALCPRIVATERASTERIZERSTATESIZE  pfnCalcPrivateRasterizerStateSize;
  PFND3D11_1DDI_CALCPRIVATESHADERSIZE  pfnCalcPrivateShaderSize;
  PFND3D11_1DDI_CALCPRIVATEGEOMETRYSHADERWITHSTREAMOUTPUT  pfnCalcPrivateGeometryShaderWithStreamOutput;
  PFND3D10DDI_CALCPRIVATESAMPLERSIZE  pfnCalcPrivateSamplerSize;
  PFND3D10DDI_CALCPRIVATEQUERYSIZE  pfnCalcPrivateQuerySize;
  PFND3D10DDI_CHECKFORMATSUPPORT  pfnCheckFormatSupport;
  PFND3D10DDI_CHECKMULTISAMPLEQUALITYLEVELS  pfnCheckMultisampleQualityLevels;
  PFND3D10DDI_CHECKCOUNTERINFO  pfnCheckCounterInfo;
  PFND3D10DDI_CHECKCOUNTER  pfnCheckCounter;
  PFND3D11DDI_CHECKDEFERREDCONTEXTHANDLESIZES  pfnCheckDeferredContextHandleSizes;
  PFND3D11DDI_CALCDEFERREDCONTEXTHANDLESIZE  pfnCalcDeferredContextHandleSize;
  PFND3D11DDI_CALCPRIVATEDEFERREDCONTEXTSIZE  pfnCalcPrivateDeferredContextSize;
  PFND3D11DDI_CREATEDEFERREDCONTEXT  pfnCreateDeferredContext;
  PFND3D11DDI_CALCPRIVATECOMMANDLISTSIZE  pfnCalcPrivateCommandListSize;
  PFND3D11_1DDI_CALCPRIVATETESSELLATIONSHADERSIZE  pfnCalcPrivateTessellationShaderSize;
  PFND3D11DDI_CALCPRIVATEUNORDEREDACCESSVIEWSIZE  pfnCalcPrivateUnorderedAccessViewSize;
  PFND3D11DDI_SETRESOURCEMINLOD  pfnSetResourceMinLOD;
} D3D11DDI_DEVICEFUNCS;