D3DDDI_CREATECONTEXTFLAGS structure (d3dukmdt.h)
The D3DDDI_CREATECONTEXTFLAGS structure describes how to create a context in a call to the pfnCreateContextCb function.
Syntax
typedef struct _D3DDDI_CREATECONTEXTFLAGS {
union {
struct {
UINT NullRendering : 1;
UINT InitialData : 1;
UINT DisableGpuTimeout : 1;
UINT SynchronizationOnly : 1;
UINT HwQueueSupported : 1;
UINT NoKmdAccess : 1;
UINT TestContext : 1;
#if ...
UINT Reserved : 25;
#elif
UINT Reserved : 28;
#else
UINT Reserved : 30;
#endif
};
UINT Value;
};
} D3DDDI_CREATECONTEXTFLAGS;
Members
NullRendering
Specifies whether the GPU should process any commands that are sent by the context that is created. The NullRendering bit-field flag is set to inform the GPU not to process any commands that are sent by the context. The NullRendering bit-field flag is set only during performance investigating and debugging to simulate an infinitely fast rendering engine that still must perform the overhead of DMA buffer submission and signaling. NullRendering is never set during typical operations.
InitialData
When set, indicates that the context is created with initial data.
DisableGpuTimeout
When set, indicates that the GPU timeout is disabled for the context.
SynchronizationOnly
When set, indicates that the context is created for synchronization purposes only, and not for rendering.
HwQueueSupported
When set, indicates that the context supports hardware queues, which can improve efficiency in command processing.
NoKmdAccess
When set, indicates that the context is created without kernel-mode driver (KMD) access. Added in WDDM 2.3.
TestContext
When set, indicates that the context is created for testing purposes. Added in WDDM 2.3.
Reserved
This member is reserved and should be set to zero.
Value
A member in the union that is contained in D3DDDI_CREATECONTEXTFLAGS that can hold one 32-bit value that identifies how to create the context.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of the Windows operating systems. |
| Header | d3dukmdt.h (include D3dumddi.h, D3dkmddi.h) |