CUresult cuD3D9RegisterResource	(	IDirect3DResource9 *	pResource,
		unsigned int	Flags
	)

Deprecated:: This function is deprecated as of Cuda 3.0.

Registers the Direct3D resource pResource 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 cuD3D9UnregisterResource(). Also on success, this call will increase the internal reference count on pResource. This reference count will be decremented when this resource is unregistered through cuD3D9UnregisterResource().

This call is potentially high-overhead and should not be called every frame in interactive applications.

The type of pResource must be one of the following.

IDirect3DVertexBuffer9: Cannot be used with Flags set to CU_D3D9_REGISTER_FLAGS_ARRAY.
IDirect3DIndexBuffer9: Cannot be used with Flags set to CU_D3D9_REGISTER_FLAGS_ARRAY.
IDirect3DSurface9: 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. For restrictions on the Flags parameter, see type IDirect3DBaseTexture9.
IDirect3DBaseTexture9: When a texture is registered, all surfaces associated with the all mipmap levels of all faces of the texture will be accessible to CUDA.

The Flags argument specifies the mechanism through which CUDA will access the Direct3D resource. The following values are allowed.

CU_D3D9_REGISTER_FLAGS_NONE: Specifies that CUDA will access this resource through a CUdeviceptr. The pointer, size, and (for textures), pitch for each subresource of this allocation may be queried through cuD3D9ResourceGetMappedPointer(), cuD3D9ResourceGetMappedSize(), and cuD3D9ResourceGetMappedPitch() respectively. This option is valid for all resource types.
CU_D3D9_REGISTER_FLAGS_ARRAY: Specifies that CUDA will access this resource through a CUarray queried on a sub-resource basis through cuD3D9ResourceGetMappedArray(). This option is only valid for resources of type IDirect3DSurface9 and subtypes of IDirect3DBaseTexture9.

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.
Any resources allocated in D3DPOOL_SYSTEMMEM or D3DPOOL_MANAGED 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.

If Direct3D interoperability is not initialized on this context, then CUDA_ERROR_INVALID_CONTEXT is returned. If pResource is of incorrect type (e.g. is a non-stand-alone IDirect3DSurface9) or is already registered, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource cannot be registered then CUDA_ERROR_UNKNOWN is returned.

Parameters:

	pResource	- Resource to register for CUDA access
	Flags	- Flags 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:: cuGraphicsD3D9RegisterResource