cuD3D11GetDevices (3)
NAME
Direct3D 11 Interoperability -Modules
Direct3D 11 Interoperability [DEPRECATED]
Enumerations
enum CUd3d11DeviceList { CU_D3D11_DEVICE_LIST_ALL = 0x01, CU_D3D11_DEVICE_LIST_CURRENT_FRAME = 0x02, CU_D3D11_DEVICE_LIST_NEXT_FRAME = 0x03 }
Functions
CUresult cuD3D11GetDevice (CUdevice *pCudaDevice, IDXGIAdapter *pAdapter)
Gets the CUDA device corresponding to a display adapter.
CUresult cuD3D11GetDevices (unsigned int *pCudaDeviceCount, CUdevice *pCudaDevices, unsigned int cudaDeviceCount, ID3D11Device *pD3D11Device, CUd3d11DeviceList deviceList)
Gets the CUDA devices corresponding to a Direct3D 11 device.
CUresult cuGraphicsD3D11RegisterResource (CUgraphicsResource *pCudaResource, ID3D11Resource *pD3DResource, unsigned int Flags)
Register a Direct3D 11 resource for access by CUDA.
Detailed Description
\brief Direct3D 11 interoperability functions of the low-level CUDA driver API (cudaD3D11.h)
This section describes the Direct3D 11 interoperability functions of the low-level CUDA driver application programming interface. Note that mapping of Direct3D 11 resources is performed with the graphics API agnostic, resource mapping interface described in Graphics Interoperability.
Enumeration Type Documentation
enum CUd3d11DeviceList
CUDA devices corresponding to a D3D11 device
Enumerator:
- CU_D3D11_DEVICE_LIST_ALL
- The CUDA devices for all GPUs used by a D3D11 device
- CU_D3D11_DEVICE_LIST_CURRENT_FRAME
- The CUDA devices for the GPUs used by a D3D11 device in its currently rendering frame
- CU_D3D11_DEVICE_LIST_NEXT_FRAME
- The CUDA devices for the GPUs to be used by a D3D11 device in the next frame
Function Documentation
CUresult cuD3D11GetDevice (CUdevice * pCudaDevice, IDXGIAdapter * pAdapter)
Returns in *pCudaDevice the CUDA-compatible device corresponding to the adapter pAdapter obtained from IDXGIFactory::EnumAdapters.
If no device on pAdapter is CUDA-compatible the call will return CUDA_ERROR_NO_DEVICE.
Parameters:
-
pCudaDevice - Returned CUDA device corresponding to pAdapter
pAdapter - Adapter to query for CUDA device
Returns:
- CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_NO_DEVICE, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_NOT_FOUND, CUDA_ERROR_UNKNOWN
Note:
- Note that this function may also return error codes from previous, asynchronous launches.
See also:
- cuD3D11GetDevices
CUresult cuD3D11GetDevices (unsigned int * pCudaDeviceCount, CUdevice * pCudaDevices, unsigned int cudaDeviceCount, ID3D11Device * pD3D11Device, CUd3d11DeviceList deviceList)
Returns in *pCudaDeviceCount the number of CUDA-compatible device corresponding to the Direct3D 11 device pD3D11Device. Also returns in *pCudaDevices at most cudaDeviceCount of the CUDA-compatible devices corresponding to the Direct3D 11 device pD3D11Device.
If any of the GPUs being used to render pDevice are not CUDA capable then the call will return CUDA_ERROR_NO_DEVICE.
Parameters:
-
pCudaDeviceCount - Returned number of CUDA devices corresponding to pD3D11Device
pCudaDevices - Returned CUDA devices corresponding to pD3D11Device
cudaDeviceCount - The size of the output device array pCudaDevices
pD3D11Device - Direct3D 11 device to query for CUDA devices
deviceList - The set of devices to return. This set may be CU_D3D11_DEVICE_LIST_ALL for all devices, CU_D3D11_DEVICE_LIST_CURRENT_FRAME for the devices used to render the current frame (in SLI), or CU_D3D11_DEVICE_LIST_NEXT_FRAME for the devices used to render the next frame (in SLI).
Returns:
- CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_NO_DEVICE, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_NOT_FOUND, CUDA_ERROR_UNKNOWN
Note:
- Note that this function may also return error codes from previous, asynchronous launches.
See also:
- cuD3D11GetDevice
CUresult cuGraphicsD3D11RegisterResource (CUgraphicsResource * pCudaResource, ID3D11Resource * pD3DResource, unsigned int Flags)
Registers the Direct3D 11 resource pD3DResource for access by CUDA and returns a CUDA handle to pD3Dresource in pCudaResource. The handle returned in pCudaResource may be used to map and unmap this resource until it is unregistered. On success this call will increase the internal reference count on pD3DResource. This reference count will be decremented when this resource is unregistered through cuGraphicsUnregisterResource().
This call is potentially high-overhead and should not be called every frame in interactive applications.
The type of pD3DResource must be one of the following.
- *
- ID3D11Buffer: may be accessed through a device pointer.
- *
- ID3D11Texture1D: individual subresources of the texture may be accessed via arrays
- *
- ID3D11Texture2D: individual subresources of the texture may be accessed via arrays
- *
- ID3D11Texture3D: individual subresources of the texture may be accessed via arrays
The Flags argument may be used to specify additional parameters at register time. The valid values for this parameter are
- *
- CU_GRAPHICS_REGISTER_FLAGS_NONE: Specifies no hints about how this resource will be used.
- *
- CU_GRAPHICS_REGISTER_FLAGS_SURFACE_LDST: Specifies that CUDA will bind this resource to a surface reference.
- *
- CU_GRAPHICS_REGISTER_FLAGS_TEXTURE_GATHER: 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 DXGI formats is as follows. For compactness the notation A_{B,C,D} represents A_B, A_C, and A_D.
- *
- DXGI_FORMAT_A8_UNORM
- *
- DXGI_FORMAT_B8G8R8A8_UNORM
- *
- DXGI_FORMAT_B8G8R8X8_UNORM
- *
- DXGI_FORMAT_R16_FLOAT
- *
- DXGI_FORMAT_R16G16B16A16_{FLOAT,SINT,SNORM,UINT,UNORM}
- *
- DXGI_FORMAT_R16G16_{FLOAT,SINT,SNORM,UINT,UNORM}
- *
- DXGI_FORMAT_R16_{SINT,SNORM,UINT,UNORM}
- *
- DXGI_FORMAT_R32_FLOAT
- *
- DXGI_FORMAT_R32G32B32A32_{FLOAT,SINT,UINT}
- *
- DXGI_FORMAT_R32G32_{FLOAT,SINT,UINT}
- *
- DXGI_FORMAT_R32_{SINT,UINT}
- *
- DXGI_FORMAT_R8G8B8A8_{SINT,SNORM,UINT,UNORM,UNORM_SRGB}
- *
- DXGI_FORMAT_R8G8_{SINT,SNORM,UINT,UNORM}
- *
- DXGI_FORMAT_R8_{SINT,SNORM,UINT,UNORM}
If pD3DResource is of incorrect type or is already registered then CUDA_ERROR_INVALID_HANDLE is returned. If pD3DResource cannot be registered then CUDA_ERROR_UNKNOWN is returned. If Flags is not one of the above specified value then CUDA_ERROR_INVALID_VALUE is returned.
Parameters:
-
pCudaResource - Returned graphics resource handle
pD3DResource - Direct3D resource to register
Flags - Parameters for resource registration
Returns:
- CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED, CUDA_ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_OUT_OF_MEMORY, CUDA_ERROR_UNKNOWN
Note:
- Note that this function may also return error codes from previous, asynchronous launches.
See also:
- cuGraphicsUnregisterResource, cuGraphicsMapResources, cuGraphicsSubResourceGetMappedArray, cuGraphicsResourceGetMappedPointer
Author
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