Provided by: nvidia-cuda-dev_7.5.18-0ubuntu1_amd64 
NAME
Direct3D 9 Interoperability -
Enumerations
enum cudaD3D9DeviceList { cudaD3D9DeviceListAll = 1, cudaD3D9DeviceListCurrentFrame = 2,
cudaD3D9DeviceListNextFrame = 3 }
Functions
cudaError_t cudaD3D9GetDevice (int *device, const char *pszAdapterName)
Gets the device number for an adapter.
cudaError_t cudaD3D9GetDevices (unsigned int *pCudaDeviceCount, int *pCudaDevices,
unsigned int cudaDeviceCount, IDirect3DDevice9 *pD3D9Device, enum cudaD3D9DeviceList
deviceList)
Gets the CUDA devices corresponding to a Direct3D 9 device.
cudaError_t cudaD3D9GetDirect3DDevice (IDirect3DDevice9 **ppD3D9Device)
Gets the Direct3D device against which the current CUDA context was created.
cudaError_t cudaD3D9SetDirect3DDevice (IDirect3DDevice9 *pD3D9Device, int device=-1)
Sets the Direct3D 9 device to use for interoperability with a CUDA device.
cudaError_t cudaGraphicsD3D9RegisterResource (struct cudaGraphicsResource **resource,
IDirect3DResource9 *pD3DResource, unsigned int flags)
Register a Direct3D 9 resource for access by CUDA.
Detailed Description
This section describes the Direct3D 9 interoperability functions of the CUDA runtime
application programming interface. Note that mapping of Direct3D 9 resources is performed
with the graphics API agnostic, resource mapping interface described in Graphics
Interopability.
Enumeration Type Documentation
enum cudaD3D9DeviceList
CUDA devices corresponding to a D3D9 device
Enumerator:
cudaD3D9DeviceListAll
The CUDA devices for all GPUs used by a D3D9 device
cudaD3D9DeviceListCurrentFrame
The CUDA devices for the GPUs used by a D3D9 device in its currently rendering
frame
cudaD3D9DeviceListNextFrame
The CUDA devices for the GPUs to be used by a D3D9 device in the next frame
Function Documentation
cudaError_t cudaD3D9GetDevice (int * device, const char * pszAdapterName)
Returns in *device the CUDA-compatible device corresponding to the adapter name
pszAdapterName obtained from EnumDisplayDevices or IDirect3D9::GetAdapterIdentifier(). If
no device on the adapter with name pszAdapterName is CUDA-compatible then the call will
fail.
Parameters:
device - Returns the device corresponding to pszAdapterName
pszAdapterName - D3D9 adapter to get device for
Returns:
cudaSuccess, cudaErrorInvalidValue, cudaErrorUnknown
Note:
Note that this function may also return error codes from previous, asynchronous
launches.
See also:
cudaD3D9SetDirect3DDevice, cudaGraphicsD3D9RegisterResource,
cudaError_t cudaD3D9GetDevices (unsigned int * pCudaDeviceCount, int * pCudaDevices, unsigned
int cudaDeviceCount, IDirect3DDevice9 * pD3D9Device, enum cudaD3D9DeviceList deviceList)
Returns in *pCudaDeviceCount the number of CUDA-compatible devices corresponding to the
Direct3D 9 device pD3D9Device. Also returns in *pCudaDevices at most cudaDeviceCount of
the the CUDA-compatible devices corresponding to the Direct3D 9 device pD3D9Device.
If any of the GPUs being used to render pDevice are not CUDA capable then the call will
return cudaErrorNoDevice.
Parameters:
pCudaDeviceCount - Returned number of CUDA devices corresponding to pD3D9Device
pCudaDevices - Returned CUDA devices corresponding to pD3D9Device
cudaDeviceCount - The size of the output device array pCudaDevices
pD3D9Device - Direct3D 9 device to query for CUDA devices
deviceList - The set of devices to return. This set may be cudaD3D9DeviceListAll for
all devices, cudaD3D9DeviceListCurrentFrame for the devices used to render the current
frame (in SLI), or cudaD3D9DeviceListNextFrame for the devices used to render the next
frame (in SLI).
Returns:
cudaSuccess, cudaErrorNoDevice, cudaErrorUnknown
Note:
Note that this function may also return error codes from previous, asynchronous
launches.
See also:
cudaGraphicsUnregisterResource, cudaGraphicsMapResources,
cudaGraphicsSubResourceGetMappedArray, cudaGraphicsResourceGetMappedPointer
cudaError_t cudaD3D9GetDirect3DDevice (IDirect3DDevice9 ** ppD3D9Device)
Returns in *ppD3D9Device the Direct3D device against which this CUDA context was created
in cudaD3D9SetDirect3DDevice().
Parameters:
ppD3D9Device - Returns the Direct3D device for this thread
Returns:
cudaSuccess, cudaErrorUnknown
Note:
Note that this function may also return error codes from previous, asynchronous
launches.
See also:
cudaD3D9SetDirect3DDevice
cudaError_t cudaD3D9SetDirect3DDevice (IDirect3DDevice9 * pD3D9Device, int device = -1)
Records pD3D9Device as the Direct3D 9 device to use for Direct3D 9 interoperability with
the CUDA device device and sets device as the current device for the calling host thread.
If device has already been initialized then this call will fail with the error
cudaErrorSetOnActiveProcess. In this case it is necessary to reset device using
cudaDeviceReset() before Direct3D 9 interoperability on device may be enabled.
Successfully initializing CUDA interoperability with pD3D9Device will increase the
internal reference count on pD3D9Device. This reference count will be decremented when
device is reset using cudaDeviceReset().
Note that this function is never required for correct functionality. Use of this function
will result in accelerated interoperability only when the operating system is Windows
Vista or Windows 7, and the device pD3DDdevice is not an IDirect3DDevice9Ex. In all other
cirumstances, this function is not necessary.
Parameters:
pD3D9Device - Direct3D device to use for this thread
device - The CUDA device to use. This device must be among the devices returned when
querying cudaD3D9DeviceListAll from cudaD3D9GetDevices, may be set to -1 to
automatically select an appropriate CUDA device.
Returns:
cudaSuccess, cudaErrorInitializationError, cudaErrorInvalidValue,
cudaErrorSetOnActiveProcess
Note:
Note that this function may also return error codes from previous, asynchronous
launches.
See also:
cudaD3D9GetDevice, cudaGraphicsD3D9RegisterResource, cudaDeviceReset
cudaError_t cudaGraphicsD3D9RegisterResource (struct cudaGraphicsResource ** resource,
IDirect3DResource9 * pD3DResource, unsigned int flags)
Registers the Direct3D 9 resource pD3DResource for access by CUDA.
If this call is successful then the application will be able to map and unmap this
resource until it is unregistered through cudaGraphicsUnregisterResource(). Also on
success, this call will increase the internal reference count on pD3DResource. This
reference count will be decremented when this resource is unregistered through
cudaGraphicsUnregisterResource().
This call potentially has a high-overhead and should not be called every frame in
interactive applications.
The type of pD3DResource must be one of the following.
• IDirect3DVertexBuffer9: may be accessed through a device pointer
• IDirect3DIndexBuffer9: may be accessed through a device pointer
• IDirect3DSurface9: may be accessed through an array. Only stand-alone objects of type
IDirect3DSurface9 may be explicitly shared. In particular, individual mipmap levels and
faces of cube maps may not be registered directly. To access individual surfaces
associated with a texture, one must register the base texture object.
• IDirect3DBaseTexture9: individual surfaces on this texture may be accessed through an
array.
The flags argument may be used to specify additional parameters at register time. The
valid values for this parameter are
• cudaGraphicsRegisterFlagsNone: Specifies no hints about how this resource will be used.
• cudaGraphicsRegisterFlagsSurfaceLoadStore: Specifies that CUDA will bind this resource
to a surface reference.
• cudaGraphicsRegisterFlagsTextureGather: Specifies that CUDA will perform texture gather
operations on this resource.
Not all Direct3D resources of the above types may be used for interoperability with CUDA.
The following are some limitations.
• The primary rendertarget may not be registered with CUDA.
• Resources allocated as shared may not be registered with CUDA.
• Textures which are not of a format which is 1, 2, or 4 channels of 8, 16, or 32-bit
integer or floating-point data cannot be shared.
• Surfaces of depth or stencil formats cannot be shared.
A complete list of supported formats is as follows:
• D3DFMT_L8
• D3DFMT_L16
• D3DFMT_A8R8G8B8
• D3DFMT_X8R8G8B8
• D3DFMT_G16R16
• D3DFMT_A8B8G8R8
• D3DFMT_A8
• D3DFMT_A8L8
• D3DFMT_Q8W8V8U8
• D3DFMT_V16U16
• D3DFMT_A16B16G16R16F
• D3DFMT_A16B16G16R16
• D3DFMT_R32F
• D3DFMT_G16R16F
• D3DFMT_A32B32G32R32F
• D3DFMT_G32R32F
• D3DFMT_R16F
If pD3DResource is of incorrect type or is already registered, then
cudaErrorInvalidResourceHandle is returned. If pD3DResource cannot be registered, then
cudaErrorUnknown is returned.
Parameters:
resource - Pointer to returned resource handle
pD3DResource - Direct3D resource to register
flags - Parameters for resource registration
Returns:
cudaSuccess, cudaErrorInvalidDevice, cudaErrorInvalidValue,
cudaErrorInvalidResourceHandle, cudaErrorUnknown
Note:
Note that this function may also return error codes from previous, asynchronous
launches.
See also:
cudaD3D9SetDirect3DDevice, cudaGraphicsUnregisterResource, cudaGraphicsMapResources,
cudaGraphicsSubResourceGetMappedArray, cudaGraphicsResourceGetMappedPointer
Author
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