func (s *Sampler) Info(param SamplerInfo) (uint32, error) {
var ret uint32
var c_size_ret C.size_t
if err := C.clGetSamplerInfo(s.id, C.cl_sampler_info(param), C.size_t(4), unsafe.Pointer(&ret), &c_size_ret); err != C.CL_SUCCESS {
return 0, Cl_error(err)
}
return ret, nil
}
func (s *Sampler) Property(prop SamplerProperty) interface{} {
if value, ok := s.properties[prop]; ok {
return value
}
var data interface{}
var length C.size_t
var ret C.cl_int
switch prop {
case SAMPLER_REFERENCE_COUNT:
var val C.cl_uint
ret = C.clGetSamplerInfo(s.id, C.cl_sampler_info(prop), C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), &length)
data = val
case SAMPLER_NORMALIZED_COORDS:
var val C.cl_bool
ret = C.clGetSamplerInfo(s.id, C.cl_sampler_info(prop), C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), &length)
data = val == C.CL_TRUE
case SAMPLER_ADDRESSING_MODE:
var val C.cl_addressing_mode
ret = C.clGetSamplerInfo(s.id, C.cl_sampler_info(prop), C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), &length)
data = AddressingMode(ret)
case SAMPLER_FILTER_MODE:
var val C.cl_filter_mode
ret = C.clGetSamplerInfo(s.id, C.cl_sampler_info(prop), C.size_t(unsafe.Sizeof(val)), unsafe.Pointer(&val), &length)
data = FilterMode(ret)
default:
return nil
}
if ret != C.CL_SUCCESS {
return nil
}
s.properties[prop] = data
return s.properties[prop]
}
// see https://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html
func GetSamplerInfo(sampler Sampler, paramName SamplerInfo, paramValueSize uint64, paramValue unsafe.Pointer, paramValueSizeRet *uint64) ErrorCode {
return ErrorCode(C.clGetSamplerInfo(sampler, C.cl_sampler_info(paramName), C.size_t(paramValueSize), paramValue, (*C.size_t)(paramValueSizeRet)))
}
func CLGetSamplerInfo(sampler CL_sampler,
param_name CL_sampler_info,
param_value_size CL_size_t,
param_value *interface{},
param_value_size_ret *CL_size_t) CL_int {
if (param_value_size == 0 || param_value == nil) && param_value_size_ret == nil {
return CL_INVALID_VALUE
} else {
var c_param_value_size_ret C.size_t
var c_errcode_ret C.cl_int
if param_value_size == 0 || param_value == nil {
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
nil,
&c_param_value_size_ret)
} else {
switch param_name {
case CL_SAMPLER_REFERENCE_COUNT:
var value C.cl_uint
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
unsafe.Pointer(&value),
&c_param_value_size_ret)
*param_value = CL_uint(value)
case CL_SAMPLER_CONTEXT:
var value C.cl_context
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
unsafe.Pointer(&value),
&c_param_value_size_ret)
*param_value = CL_context{value}
case CL_SAMPLER_FILTER_MODE:
var value C.cl_filter_mode
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
unsafe.Pointer(&value),
&c_param_value_size_ret)
*param_value = CL_filter_mode(value)
case CL_SAMPLER_ADDRESSING_MODE:
var value C.cl_addressing_mode
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
unsafe.Pointer(&value),
&c_param_value_size_ret)
*param_value = CL_addressing_mode(value)
case CL_SAMPLER_NORMALIZED_COORDS:
var value C.cl_bool
c_errcode_ret = C.clGetSamplerInfo(sampler.cl_sampler,
C.cl_sampler_info(param_name),
C.size_t(param_value_size),
unsafe.Pointer(&value),
&c_param_value_size_ret)
*param_value = CL_bool(value)
//TODO in CL.h, but not in spec? Why?
//case CL_SAMPLER_MIP_FILTER_MODE,
// CL_SAMPLER_LOD_MIN,
// CL_SAMPLER_LOD_MAX:
default:
return CL_INVALID_VALUE
}
}
if param_value_size_ret != nil {
*param_value_size_ret = CL_size_t(c_param_value_size_ret)
}
return CL_int(c_errcode_ret)
}
}