NAME

       VDPAU Interoperability -

   Functions
       CUresult cuGraphicsVDPAURegisterOutputSurface (CUgraphicsResource *pCudaResource,
           VdpOutputSurface vdpSurface, unsigned int flags)
           Registers a VDPAU VdpOutputSurface object.
       CUresult cuGraphicsVDPAURegisterVideoSurface (CUgraphicsResource *pCudaResource,
           VdpVideoSurface vdpSurface, unsigned int flags)
           Registers a VDPAU VdpVideoSurface object.
       CUresult cuVDPAUCtxCreate (CUcontext *pCtx, unsigned int flags, CUdevice device, VdpDevice
           vdpDevice, VdpGetProcAddress *vdpGetProcAddress)
           Create a CUDA context for interoperability with VDPAU.
       CUresult cuVDPAUGetDevice (CUdevice *pDevice, VdpDevice vdpDevice, VdpGetProcAddress
           *vdpGetProcAddress)
           Gets the CUDA device associated with a VDPAU device.

Detailed Description

       \brief VDPAU interoperability functions of the low-level CUDA driver API (cudaVDPAU.h)

       This section describes the VDPAU interoperability functions of the low-level CUDA driver
       application programming interface.

Function Documentation

   CUresult cuGraphicsVDPAURegisterOutputSurface (CUgraphicsResource * pCudaResource,
       VdpOutputSurface vdpSurface, unsigned int flags)
       Registers the VdpOutputSurface specified by vdpSurface for access by CUDA. A handle to the
       registered object is returned as pCudaResource. The surface's intended usage is specified
       using flags, as follows:

       • CU_GRAPHICS_MAP_RESOURCE_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. This is the default value.

       • CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY: Specifies that CUDA will not write to this
         resource.

       • CU_GRAPHICS_MAP_RESOURCE_FLAGS_WRITE_DISCARD: Specifies that CUDA 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.

       The VdpOutputSurface is presented as an array of subresources that may be accessed using
       pointers returned by cuGraphicsSubResourceGetMappedArray. The exact number of valid
       arrayIndex values depends on the VDPAU surface format. The mapping is shown in the table
       below. mipLevel must be 0.

       Parameters:
           pCudaResource - Pointer to the returned object handle
           vdpSurface - The VdpOutputSurface to be registered
           flags - Map flags

       Returns:
           CUDA_SUCCESS, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_ALREADY_MAPPED,
           CUDA_ERROR_INVALID_CONTEXT,

       Note:
           Note that this function may also return error codes from previous, asynchronous
           launches.

       See also:
           cuCtxCreate, cuVDPAUCtxCreate, cuGraphicsVDPAURegisterVideoSurface,
           cuGraphicsUnregisterResource, cuGraphicsResourceSetMapFlags, cuGraphicsMapResources,
           cuGraphicsUnmapResources, cuGraphicsSubResourceGetMappedArray, cuVDPAUGetDevice,
           cudaGraphicsVDPAURegisterOutputSurface

   CUresult cuGraphicsVDPAURegisterVideoSurface (CUgraphicsResource * pCudaResource,
       VdpVideoSurface vdpSurface, unsigned int flags)
       Registers the VdpVideoSurface specified by vdpSurface for access by CUDA. A handle to the
       registered object is returned as pCudaResource. The surface's intended usage is specified
       using flags, as follows:

       • CU_GRAPHICS_MAP_RESOURCE_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. This is the default value.

       • CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY: Specifies that CUDA will not write to this
         resource.

       • CU_GRAPHICS_MAP_RESOURCE_FLAGS_WRITE_DISCARD: Specifies that CUDA 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.

       The VdpVideoSurface is presented as an array of subresources that may be accessed using
       pointers returned by cuGraphicsSubResourceGetMappedArray. The exact number of valid
       arrayIndex values depends on the VDPAU surface format. The mapping is shown in the table
       below. mipLevel must be 0.

       Parameters:
           pCudaResource - Pointer to the returned object handle
           vdpSurface - The VdpVideoSurface to be registered
           flags - Map flags

       Returns:
           CUDA_SUCCESS, CUDA_ERROR_INVALID_HANDLE, CUDA_ERROR_ALREADY_MAPPED,
           CUDA_ERROR_INVALID_CONTEXT,

       Note:
           Note that this function may also return error codes from previous, asynchronous
           launches.

       See also:
           cuCtxCreate, cuVDPAUCtxCreate, cuGraphicsVDPAURegisterOutputSurface,
           cuGraphicsUnregisterResource, cuGraphicsResourceSetMapFlags, cuGraphicsMapResources,
           cuGraphicsUnmapResources, cuGraphicsSubResourceGetMappedArray, cuVDPAUGetDevice,
           cudaGraphicsVDPAURegisterVideoSurface

   CUresult cuVDPAUCtxCreate (CUcontext * pCtx, unsigned int flags, CUdevice device, VdpDevice
       vdpDevice, VdpGetProcAddress * vdpGetProcAddress)
       Creates a new CUDA context, initializes VDPAU interoperability, and associates the CUDA
       context with the calling thread. It must be called before performing any other VDPAU
       interoperability operations. It may fail if the needed VDPAU driver facilities are not
       available. For usage of the flags parameter, see cuCtxCreate().

       Parameters:
           pCtx - Returned CUDA context
           flags - Options for CUDA context creation
           device - Device on which to create the context
           vdpDevice - The VdpDevice to interop with
           vdpGetProcAddress - VDPAU's VdpGetProcAddress function pointer

       Returns:
           CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED,
           CUDA_ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE, CUDA_ERROR_OUT_OF_MEMORY

       Note:
           Note that this function may also return error codes from previous, asynchronous
           launches.

       See also:
           cuCtxCreate, cuGraphicsVDPAURegisterVideoSurface,
           cuGraphicsVDPAURegisterOutputSurface, cuGraphicsUnregisterResource,
           cuGraphicsResourceSetMapFlags, cuGraphicsMapResources, cuGraphicsUnmapResources,
           cuGraphicsSubResourceGetMappedArray, cuVDPAUGetDevice

   CUresult cuVDPAUGetDevice (CUdevice * pDevice, VdpDevice vdpDevice, VdpGetProcAddress *
       vdpGetProcAddress)
       Returns in *pDevice the CUDA device associated with a vdpDevice, if applicable.

       Parameters:
           pDevice - Device associated with vdpDevice
           vdpDevice - A VdpDevice handle
           vdpGetProcAddress - VDPAU's VdpGetProcAddress function pointer

       Returns:
           CUDA_SUCCESS, CUDA_ERROR_DEINITIALIZED, CUDA_ERROR_NOT_INITIALIZED,
           CUDA_ERROR_INVALID_CONTEXT, CUDA_ERROR_INVALID_VALUE

       Note:
           Note that this function may also return error codes from previous, asynchronous
           launches.

       See also:
           cuCtxCreate, cuVDPAUCtxCreate, cuGraphicsVDPAURegisterVideoSurface,
           cuGraphicsVDPAURegisterOutputSurface, cuGraphicsUnregisterResource,
           cuGraphicsResourceSetMapFlags, cuGraphicsMapResources, cuGraphicsUnmapResources,
           cuGraphicsSubResourceGetMappedArray, cudaVDPAUGetDevice

Author

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