NAME

       VDPAU Interoperability -

   Functions
       cudaError_t cudaGraphicsVDPAURegisterOutputSurface (struct cudaGraphicsResource
           **resource, VdpOutputSurface vdpSurface, unsigned int flags)
           Register a VdpOutputSurface object.
       cudaError_t cudaGraphicsVDPAURegisterVideoSurface (struct cudaGraphicsResource **resource,
           VdpVideoSurface vdpSurface, unsigned int flags)
           Register a VdpVideoSurface object.
       cudaError_t cudaVDPAUGetDevice (int *device, VdpDevice vdpDevice, VdpGetProcAddress
           *vdpGetProcAddress)
           Gets the CUDA device associated with a VdpDevice.
       cudaError_t cudaVDPAUSetVDPAUDevice (int device, VdpDevice vdpDevice, VdpGetProcAddress
           *vdpGetProcAddress)
           Sets a CUDA device to use VDPAU interoperability.

Detailed Description

       This section describes the VDPAU interoperability functions of the CUDA runtime
       application programming interface.

Function Documentation

   cudaError_t cudaGraphicsVDPAURegisterOutputSurface (struct cudaGraphicsResource ** resource,
       VdpOutputSurface vdpSurface, unsigned int flags)
       Registers the VdpOutputSurface specified by vdpSurface for access by CUDA. A handle to the
       registered object is returned as resource. The surface's intended usage is specified using
       flags, as follows:

       • cudaGraphicsMapFlagsNone: 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.

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

       • cudaGraphicsMapFlagsWriteDiscard: 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.

       Parameters:
           resource - Pointer to the returned object handle
           vdpSurface - VDPAU object to be registered
           flags - Map flags

       Returns:
           cudaSuccess, cudaErrorInvalidDevice, cudaErrorInvalidValue,
           cudaErrorInvalidResourceHandle, cudaErrorUnknown

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

       See also:
           cudaVDPAUSetVDPAUDevice, cudaGraphicsUnregisterResource,
           cudaGraphicsSubResourceGetMappedArray

   cudaError_t cudaGraphicsVDPAURegisterVideoSurface (struct cudaGraphicsResource ** resource,
       VdpVideoSurface vdpSurface, unsigned int flags)
       Registers the VdpVideoSurface specified by vdpSurface for access by CUDA. A handle to the
       registered object is returned as resource. The surface's intended usage is specified using
       flags, as follows:

       • cudaGraphicsMapFlagsNone: 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.

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

       • cudaGraphicsMapFlagsWriteDiscard: 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.

       Parameters:
           resource - Pointer to the returned object handle
           vdpSurface - VDPAU object to be registered
           flags - Map flags

       Returns:
           cudaSuccess, cudaErrorInvalidDevice, cudaErrorInvalidValue,
           cudaErrorInvalidResourceHandle, cudaErrorUnknown

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

       See also:
           cudaVDPAUSetVDPAUDevice, cudaGraphicsUnregisterResource,
           cudaGraphicsSubResourceGetMappedArray

   cudaError_t cudaVDPAUGetDevice (int * device, VdpDevice vdpDevice, VdpGetProcAddress *
       vdpGetProcAddress)
       Returns the CUDA device associated with a VdpDevice, if applicable.

       Parameters:
           device - Returns the device associated with vdpDevice, or -1 if the device associated
           with vdpDevice is not a compute device.
           vdpDevice - A VdpDevice handle
           vdpGetProcAddress - VDPAU's VdpGetProcAddress function pointer

       Returns:
           cudaSuccess

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

       See also:
           cudaVDPAUSetVDPAUDevice

   cudaError_t cudaVDPAUSetVDPAUDevice (int device, VdpDevice vdpDevice, VdpGetProcAddress *
       vdpGetProcAddress)
       Records vdpDevice as the VdpDevice for VDPAU 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 VDPAU interoperability on device may be enabled.

       Parameters:
           device - Device to use for VDPAU interoperability
           vdpDevice - The VdpDevice to interoperate with
           vdpGetProcAddress - VDPAU's VdpGetProcAddress function pointer

       Returns:
           cudaSuccess, cudaErrorInvalidDevice, cudaErrorSetOnActiveProcess

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

       See also:
           cudaGraphicsVDPAURegisterVideoSurface, cudaGraphicsVDPAURegisterOutputSurface,
           cudaDeviceReset

Author

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