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The XFORMOBJ_iGetFloatObjXform function downloads a FLOATOBJ transform to the driver.
Syntax
ULONG XFORMOBJ_iGetFloatObjXform(
XFORMOBJ *pxo,
FLOATOBJ_XFORM *pfxo
);
Parameters
pxo
Pointer to the XFORMOBJ structure that defines the transform to be downloaded.
pfxo
Pointer to the buffer that is to receive the FLOATOBJ_XFORM structure. This parameter can be NULL.
Return value
If an error occurs, the return value is DDI_ERROR. Otherwise, the return value is a complexity hint about the transform object. The value of this transform characterization can be one of the following:
| Return code | Description |
|---|---|
|
Arbitrary 2 x 2 matrix and offset. |
|
Identity matrix; no translation offset. |
|
Identity matrix; there is a translation offset. |
|
Off-diagonal matrix elements are zero. |
Remarks
If pxfo is not NULL, XFORMOBJ_iGetFloatObjXform loads a FLOATOBJ_XFORM into the memory location pxfo points to. This function allows graphics drivers to emulate floating-point arithmetic. NT-based operating systems do not support kernel-mode floating-point operations on some systems.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
| Target Platform | Universal |
| Header | winddi.h (include Winddi.h) |
| Library | Win32k.lib |
| DLL | Win32k.sys |