| UID | title | description | old-location | tech.root | ms.date | keywords | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | f1_keywords | topic_type | api_type | api_location | api_name | ||||||||
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NC:d3dumddi.PFND3DDDI_GETCAPS |
PFND3DDDI_GETCAPS (d3dumddi.h) |
The GetCaps function queries for capabilities of the graphics adapter. |
display\getcaps.htm |
display |
02/02/2022 |
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GetCaps, GetCaps callback function [Display Devices], PFND3DDDI_GETCAPS, PFND3DDDI_GETCAPS callback, UserModeDisplayDriver_Functions_2848e873-69ef-4b77-b8bc-8ae9f4abe2c9.xml, d3dumddi/GetCaps, display.getcaps |
d3dumddi.h |
D3dumddi.h |
Desktop |
Windows Vista |
Windows |
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The D3D runtime calls the driver's PFND3DDDI_GETCAPS callback function to query the capabilities of the graphics adapter.
A handle that identifies the graphics adapter.
pData [in, out]
A pointer to a D3DDDIARG_GETCAPS structure that describes the capabilities to retrieve.
PFND3DDDI_GETCAPS returns one of the following values:
| Return code | Description |
|---|---|
| S_OK | The capabilities were successfully retrieved. |
| E_OUTOFMEMORY | PFND3DDDI_GETCAPS could not allocate the required memory for it to complete. |
The data returned in the pData member of the D3DDDIARG_GETCAPS structure depends on the type of data that is requested (that is, the data depends on D3DDDIARG_GETCAPS.Type and sometimes on the pInfo member).
The following table has two examples of how to set up the PFND3DDDI_GETCAPS call depending on the value of D3DDDIARG_GETCAPS.Type.
| D3DDDIARG_GETCAPS member | Example 1 | Example 2 |
|---|---|---|
| Type | D3DDDICAPS_DDRAW | D3DDDICAPS_GETFORMATCOUNT |
| pInfo | [in] NULL (no conditions are set) | [in] NULL (no conditions are set) |
| pData | [out] DDRAW_CAPS (unique pointer) | [out] UINT* (unique pointer) |
| DataSize | sizeof(DDRAW_CAPS) | sizeof(UINT) |
| Notes | Driver must fill in the DDRAW_CAPS structure with the DirectDraw capabilities that it supports. | Driver must fill the buffer pointed to by pData with a UINT value that represents the number of D3DDDIFORMAT surface formats that the device supports. |
See D3DDDIARG_GETCAPS for explanations of other values for D3DDDIARG_GETCAPS.Type that are used for multiplane overlays.
If a Direct3D Level 9 driver that supports Windows Display Driver Model (WDDM) 1.3 and later completes a call to PFND3DDDI_GETCAPS and returns S_OK but doesn't change the data in the D3DDDIARG_GETCAPS structure, it is indicating to the Direct3D runtime that the hardware and driver don't support simple instancing. For more info, see D3DDDICAPS_SIMPLE_INSTANCING_SUPPORT.