clGetSamplerInfo

Returns information about the sampler object.

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 table below.

param_value

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

param_value_size

Specifies the size in bytes of memory pointed to by param_value. This size must be greater than or equal to size of return type as described in the table below.

param_value_size_ret

Returns the actual size in bytes of data copied to param_value. If param_value_size_ret is NULL, it is ignored.

cl_sampler_info Return Type and Info. returned in param_value
CL_SAMPLER_REFERENCE_COUNT Return type: cl_uint

Return the sampler reference count. 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.

CL_SAMPLER_CONTEXT Return type: cl_context

Return the context specified when the sampler is created.

CL_SAMPLER_ADDRESSING_MODE Return type: cl_addressing_mode

Return the value specified by addressing_mode argument to clCreateSampler.

CL_SAMPLER_FILTER_MODE Return type: cl_filter_mode

Return the value specified by filter_mode argument to clCreateSampler.

CL_SAMPLER_NORMALIZED_COORDS Return type: cl_bool

Return the value specified by normalized_coords argument to clCreateSampler.

Errors

Returns CL_SUCCESS if the function is executed successfully, otherwise returns CL_INVALID_VALUE if param_name is not valid, or if size in bytes specified by param_value_size is less than return type as described in the table above and param_value is not NULL, and returns CL_INVALID_SAMPLER if sampler is a not a valid sampler object.

Specification

OpenCL Specification

Also see

clCreateSampler, clRetainSampler, clReleaseSampler

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