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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