CUDA Interoperability

Declaration of functions for CUDA interoperability. More...

Functions
VPIStatus	vpiArrayWrapCudaDeviceMem (const VPIArrayData *arrayData, uint32_t flags, VPIArray *array)
	Create an array object by wrapping around an existing device-memory (CUDA) block. More...
VPIStatus	vpiImageWrapCudaDeviceMem (const VPIImageData *cudaData, uint32_t flags, VPIImage *img)
	Create an image object by wrapping around an existing device-memory (CUDA) block. More...

Detailed Description

Declaration of functions for CUDA interoperability.

The provided methods allows wrapping CUDA objects external to VPI. They can then be used efficiently in VPI compute pipelines.

Function Documentation

vpiArrayWrapCudaDeviceMem()

VPIStatus vpiArrayWrapCudaDeviceMem	(	const VPIArrayData *	arrayData,
		uint32_t	flags,
		VPIArray *	array
	)

#include <vpi/Array.h>

Create an array object by wrapping around an existing device-memory (CUDA) block.

Stride between elements has to be at least as large as the element structure size. It also has to respect alignment requirements of the element data structure.

Parameters

arrayData	[in] data
flags	[in] flags
array	[out] pointer to an array handle

Returns

an error code on failure else VPI_SUCCESS

vpiImageWrapCudaDeviceMem()

VPIStatus vpiImageWrapCudaDeviceMem	(	const VPIImageData *	cudaData,
		uint32_t	flags,
		VPIImage *	img
	)

#include <vpi/Image.h>

Create an image object by wrapping around an existing device-memory (CUDA) block.

Only pitch-linear format is supported. The underlying image object does not own/claim the memory block.

Parameters

cudaData	[in] Pointer to structure with cuda memory to be wrapped.
flags	[in] flags
img	[out] pointer to an image handle

Returns

an error code on failure else VPI_SUCCESS