Direct3D 9 Interoperability [DEPRECATED]

enum CUd3d9map_flags

Flags to map or unmap a resource

enum CUd3d9register_flags

Flags to register a resource

CUresult cuD3D9MapResources (unsigned int count, IDirect3DResource9 ** ppResource)

Deprecated

Maps the count Direct3D resources in ppResource for access by CUDA.

The resources in ppResource may be accessed in CUDA kernels until they are unmapped. Direct3D should not access any resources while they are mapped by CUDA. If an application does so the results are undefined.

This function provides the synchronization guarantee that any Direct3D calls issued before cuD3D9MapResources() will complete before any CUDA kernels issued after cuD3D9MapResources() begin.

If any of ppResource have not been registered for use with CUDA or if ppResource contains any duplicate entries, then CUDA_ERROR_INVALID_HANDLE is returned. If any of ppResource are presently mapped for access by CUDA, then CUDA_ERROR_ALREADY_MAPPED is returned.

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CUresult cuD3D9RegisterResource (IDirect3DResource9 * pResource, unsigned int Flags)

Deprecated

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.

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CUresult cuD3D9ResourceGetMappedArray (CUarray * pArray, IDirect3DResource9 * pResource, unsigned int Face, unsigned int Level)

Deprecated

Returns in *pArray an array through which the subresource of the mapped Direct3D resource pResource which corresponds to Face and Level may be accessed. The value set in pArray may change every time that pResource is mapped.

If pResource is not registered then CUDA_ERROR_INVALID_HANDLE is returned. If pResource was not registered with usage flags CU_D3D9_REGISTER_FLAGS_ARRAY then CUDA_ERROR_INVALID_HANDLE is returned. If pResource is not mapped then CUDA_ERROR_NOT_MAPPED is returned.

For usage requirements of Face and Level parameters, see cuD3D9ResourceGetMappedPointer().

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CUresult cuD3D9ResourceGetMappedPitch (size_t * pPitch, size_t * pPitchSlice, IDirect3DResource9 * pResource, unsigned int Face, unsigned int Level)

Deprecated

Returns in *pPitch and *pPitchSlice the pitch and Z-slice pitch of the subresource of the mapped Direct3D resource pResource, which corresponds to Face and Level. The values set in pPitch and pPitchSlice may change every time that pResource is mapped.

The pitch and Z-slice pitch values may be used to compute the location of a sample on a surface as follows.

For a 2D surface, the byte offset of the sample at position x, y from the base pointer of the surface is:

y * pitch + (bytes per pixel) * x

For a 3D surface, the byte offset of the sample at position x, y, z from the base pointer of the surface is:

z* slicePitch + y * pitch + (bytes per pixel) * x

Both parameters pPitch and pPitchSlice are optional and may be set to NULL.

If pResource is not of type IDirect3DBaseTexture9 or one of its sub-types or if pResource has not been registered for use with CUDA, then cudaErrorInvalidResourceHandle is returned. If pResource was not registered with usage flags CU_D3D9_REGISTER_FLAGS_NONE, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource is not mapped for access by CUDA then CUDA_ERROR_NOT_MAPPED is returned.

For usage requirements of Face and Level parameters, see cuD3D9ResourceGetMappedPointer().

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CUresult cuD3D9ResourceGetMappedPointer (CUdeviceptr * pDevPtr, IDirect3DResource9 * pResource, unsigned int Face, unsigned int Level)

Deprecated

Returns in *pDevPtr the base pointer of the subresource of the mapped Direct3D resource pResource, which corresponds to Face and Level. The value set in pDevPtr may change every time that pResource is mapped.

If pResource is not registered, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource was not registered with usage flags CU_D3D9_REGISTER_FLAGS_NONE, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource is not mapped, then CUDA_ERROR_NOT_MAPPED is returned.

If pResource is of type IDirect3DCubeTexture9, then Face must one of the values enumerated by type D3DCUBEMAP_FACES. For all other types Face must be 0. If Face is invalid, then CUDA_ERROR_INVALID_VALUE is returned.

If pResource is of type IDirect3DBaseTexture9, then Level must correspond to a valid mipmap level. At present only mipmap level 0 is supported. For all other types Level must be 0. If Level is invalid, then CUDA_ERROR_INVALID_VALUE is returned.

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CUresult cuD3D9ResourceGetMappedSize (size_t * pSize, IDirect3DResource9 * pResource, unsigned int Face, unsigned int Level)

Deprecated

Returns in *pSize the size of the subresource of the mapped Direct3D resource pResource, which corresponds to Face and Level. The value set in pSize may change every time that pResource is mapped.

If pResource has not been registered for use with CUDA, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource was not registered with usage flags CU_D3D9_REGISTER_FLAGS_NONE, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource is not mapped for access by CUDA, then CUDA_ERROR_NOT_MAPPED is returned.

For usage requirements of Face and Level parameters, see cuD3D9ResourceGetMappedPointer.

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CUresult cuD3D9ResourceGetSurfaceDimensions (size_t * pWidth, size_t * pHeight, size_t * pDepth, IDirect3DResource9 * pResource, unsigned int Face, unsigned int Level)

Deprecated

Returns in *pWidth, *pHeight, and *pDepth the dimensions of the subresource of the mapped Direct3D resource pResource, which corresponds to Face and Level.

Because anti-aliased surfaces may have multiple samples per pixel, it is possible that the dimensions of a resource will be an integer factor larger than the dimensions reported by the Direct3D runtime.

The parameters pWidth, pHeight, and pDepth are optional. For 2D surfaces, the value returned in *pDepth will be 0.

If pResource is not of type IDirect3DBaseTexture9 or IDirect3DSurface9 or if pResource has not been registered for use with CUDA, then CUDA_ERROR_INVALID_HANDLE is returned.

For usage requirements of Face and Level parameters, see cuD3D9ResourceGetMappedPointer().

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CUresult cuD3D9ResourceSetMapFlags (IDirect3DResource9 * pResource, unsigned int Flags)

Deprecated

Set Flags for mapping the Direct3D resource pResource.

Changes to Flags will take effect the next time pResource is mapped. The Flags argument may be any of the following:

• CU_D3D9_MAPRESOURCE_FLAGS_NONE: Specifies no hints about how this resource will be used. It is therefore assumed that this resource will be read from and written to by CUDA kernels. This is the default value.
• CU_D3D9_MAPRESOURCE_FLAGS_READONLY: Specifies that CUDA kernels which access this resource will not write to this resource.
• CU_D3D9_MAPRESOURCE_FLAGS_WRITEDISCARD: Specifies that CUDA kernels which access this resource will not read from this resource and will write over the entire contents of the resource, so none of the data previously stored in the resource will be preserved.

If pResource has not been registered for use with CUDA, then CUDA_ERROR_INVALID_HANDLE is returned. If pResource is presently mapped for access by CUDA, then CUDA_ERROR_ALREADY_MAPPED is returned.

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CUresult cuD3D9UnmapResources (unsigned int count, IDirect3DResource9 ** ppResource)

Deprecated

Unmaps the count Direct3D resources in ppResource.

This function provides the synchronization guarantee that any CUDA kernels issued before cuD3D9UnmapResources() will complete before any Direct3D calls issued after cuD3D9UnmapResources() begin.

If any of ppResource have not been registered for use with CUDA or if ppResource contains any duplicate entries, then CUDA_ERROR_INVALID_HANDLE is returned. If any of ppResource are not presently mapped for access by CUDA, then CUDA_ERROR_NOT_MAPPED is returned.

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CUresult cuD3D9UnregisterResource (IDirect3DResource9 * pResource)

Deprecated

Unregisters the Direct3D resource pResource so it is not accessible by CUDA unless registered again.

If pResource is not registered, then CUDA_ERROR_INVALID_HANDLE is returned.

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