PFND3D10DDI_DRAWAUTO callback function (d3d10umddi.h)
The DrawAuto function works similarly to the Draw function, except DrawAuto is used for the special case where vertex data is written through the stream-output unit and then recycled as a vertex buffer. The driver determines the number of primitives, in part, by how much data was written to the buffer through stream output.
Syntax
PFND3D10DDI_DRAWAUTO Pfnd3d10ddiDrawauto;
void Pfnd3d10ddiDrawauto(
D3D10DDI_HDEVICE unnamedParam1
)
{...}
Parameters
unnamedParam1
hDevice [in]
A handle to the display device (graphics context).
Return value
None
Remarks
The driver can use the pfnSetErrorCb callback function to set an error code.
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 DrawAuto (which typically should not happen), the driver can return D3DDDIERR_DEVICEREMOVED.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | d3d10umddi.h (include D3d10umddi.h) |