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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