C Specification

To return information about a sampler object, call the function

cl_int clGetSamplerInfo(
    cl_sampler sampler,
    cl_sampler_info param_name,
    size_t param_value_size,
    void* param_value,
    size_t* param_value_size_ret);

Parameters

  • sampler specifies the sampler being queried.

  • param_name specifies the information to query. The list of supported param_name types and the information returned in param_value by clGetSamplerInfo is described in the Sampler Object Queries table.

  • param_value is a pointer to memory where the appropriate result being queried is returned. If param_value is NULL, it is ignored.

  • param_value_size is used to specify the size in bytes of memory pointed to by param_value. This size must be ≥ size of return type as described in the Sampler Object Queries table.

  • param_value_size_ret returns the actual size in bytes of data being queried by param_name. If param_value_size_ret is NULL, it is ignored.

Description

Table 1. List of supported param_names by https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_API.html#clGetSamplerInfo
cl_sampler_info Return Type Info. returned in param_value

CL_​SAMPLER_​REFERENCE_​COUNT13

cl_uint

Return the sampler reference count.

CL_​SAMPLER_​CONTEXT

cl_context

Return the context specified when the sampler is created.

CL_​SAMPLER_​NORMALIZED_​COORDS

cl_bool

Return the normalized coords value associated with sampler.

CL_​SAMPLER_​ADDRESSING_​MODE

cl_addressing_mode

Return the addressing mode value associated with sampler.

CL_​SAMPLER_​FILTER_​MODE

cl_filter_mode

Return the filter mode value associated with sampler.

13

The reference count returned should be considered immediately stale. It is unsuitable for general use in applications. This feature is provided for identifying memory leaks.

clGetSamplerInfo returns CL_​SUCCESS if the function is executed successfully. Otherwise, it returns one of the following errors:

  • CL_​INVALID_​VALUE if param_name is not valid, or if size in bytes specified by param_value_size is < size of return type as described in the Sampler Object Queries table and param_value is not NULL.

  • CL_​INVALID_​SAMPLER if sampler is a not a valid sampler object.

  • CL_​OUT_​OF_​RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.

  • CL_​OUT_​OF_​HOST_​MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.

See Also

Document Notes

For more information, see the OpenCL Specification

This page is extracted from the OpenCL Specification. Fixes and changes should be made to the Specification, not directly.

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.