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Draw routine

The Draw function draws nonindexed primitives.

Syntax


PFND3D10DDI_DRAW Draw;

VOID APIENTRY Draw(
  _In_  D3D10DDI_HDEVICE hDevice,
  _In_  UINT VertexCount,
  _In_  UINT StartVertexLocation
)
{ ... }

Parameters

hDevice [in]

A handle to the display device (graphics context).

VertexCount [in]

The number of vertices in the vertex buffer that vertices are read from to draw the primitives.

StartVertexLocation [in]

The first vertex in the vertex buffer that vertices are read from to draw the primitives.

Return value

None

The driver can use the pfnSetErrorCb callback function to set an error code. For more information about setting error codes, see the following Remarks section.

Remarks

The driver should not encounter any error, except for D3DDDIERR_DEVICEREMOVED. Therefore, if the driver passes any error, except for D3DDDIERR_DEVICEREMOVED, in a call to the pfnSetErrorCb function, the Direct3D runtime will determine that the error is critical. Even if the device was removed, the driver is not required to return D3DDDIERR_DEVICEREMOVED; however, if device removal interfered with the operation of Draw (which typically should not happen), the driver can return D3DDDIERR_DEVICEREMOVED.

Requirements

Version

Available in Windows Vista and later versions of the Windows operating systems.

Header

D3d10umddi.h (include D3d10umddi.h)

See also

D3D10DDI_DEVICEFUNCS
pfnSetErrorCb

 

 

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