func CLCreateContextFromType(properties []CL_context_properties,
device_type CL_device_type,
pfn_notify CL_ctx_notify,
user_data unsafe.Pointer,
errcode_ret *CL_int) CL_context {
var c_errcode_ret C.cl_int
var c_context C.cl_context
if pfn_notify == nil && user_data != nil {
c_errcode_ret = CL_INVALID_VALUE
c_context = nil
} else {
var c_properties []C.cl_context_properties
var c_properties_ptr *C.cl_context_properties
if properties != nil {
c_properties = make([]C.cl_context_properties, len(properties))
for i := 0; i < len(properties); i++ {
c_properties[i] = C.cl_context_properties(properties[i])
}
c_properties_ptr = &c_properties[0]
} else {
c_properties_ptr = nil
}
if pfn_notify != nil {
//var c_user_data []unsafe.Pointer
//c_user_data = make([]unsafe.Pointer, 2)
arr := C.allocArray(2)
c_user_data := (*[2]C.pVoid)(unsafe.Pointer(arr))[:]
c_user_data[0] = (C.pVoid)(user_data)
c_user_data[1] = (C.pVoid)(unsafe.Pointer(&pfn_notify))
ctx_notify[unsafe.Pointer(&pfn_notify)] = pfn_notify
c_context = C.CLCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
unsafe.Pointer(&c_user_data),
&c_errcode_ret)
C.freeArray(arr)
} else {
c_context = C.clCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
nil,
nil,
&c_errcode_ret)
}
}
if errcode_ret != nil {
*errcode_ret = CL_int(c_errcode_ret)
}
return CL_context{c_context}
}
func CLCreateContextFromType(properties []CL_context_properties,
device_type CL_device_type,
pfn_notify CL_ctx_notify,
user_data unsafe.Pointer,
errcode_ret *CL_int) CL_context {
var c_errcode_ret C.cl_int
var c_context C.cl_context
if pfn_notify == nil && user_data != nil {
c_errcode_ret = CL_INVALID_VALUE
c_context = nil
} else {
var c_properties []C.cl_context_properties
var c_properties_ptr *C.cl_context_properties
if properties != nil {
c_properties = make([]C.cl_context_properties, len(properties))
for i := 0; i < len(properties); i++ {
c_properties[i] = C.cl_context_properties(properties[i])
}
c_properties_ptr = &c_properties[0]
} else {
c_properties_ptr = nil
}
if pfn_notify != nil {
var c_user_data []unsafe.Pointer
c_user_data = make([]unsafe.Pointer, 2)
c_user_data[0] = user_data
c_user_data[1] = unsafe.Pointer(&pfn_notify)
ctx_notify[c_user_data[1]] = pfn_notify
c_context = C.CLCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
unsafe.Pointer(&c_user_data),
&c_errcode_ret)
} else {
c_context = C.clCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
nil,
nil,
&c_errcode_ret)
}
}
if errcode_ret != nil {
*errcode_ret = CL_int(c_errcode_ret)
}
return CL_context{c_context}
}
func createParameters(params map[ContextParameter]interface{}) ([]C.cl_context_properties, error) {
c_params := make([]C.cl_context_properties, (len(params)<<1)+1)
i := 0
for param, value := range params {
c_params[i] = C.cl_context_properties(param)
switch param {
case CONTEXT_PLATFORM:
if v, ok := value.(Platform); ok {
c_params[i+1] = C.PlatformToContextParameter(v.id)
} else {
return nil, Cl_error(C.CL_INVALID_VALUE)
}
default:
return nil, Cl_error(C.CL_INVALID_VALUE)
}
i += 2
}
c_params[i] = 0
return c_params, nil
}
func CLCreateContext(properties []CL_context_properties,
num_devices CL_uint,
devices []CL_device_id,
pfn_notify CL_ctx_notify,
user_data unsafe.Pointer,
errcode_ret *CL_int) CL_context {
var c_errcode_ret C.cl_int
var c_context C.cl_context
if num_devices == 0 || devices == nil || (pfn_notify == nil && user_data != nil) {
c_errcode_ret = CL_INVALID_VALUE
c_context = nil
} else {
var c_properties []C.cl_context_properties
var c_properties_ptr *C.cl_context_properties
var c_devices []C.cl_device_id
var c_devices_ptr *C.cl_device_id
if properties != nil {
c_properties = make([]C.cl_context_properties, len(properties))
for i := 0; i < len(properties); i++ {
c_properties[i] = C.cl_context_properties(properties[i])
}
c_properties_ptr = &c_properties[0]
} else {
c_properties_ptr = nil
}
if devices != nil {
c_devices = make([]C.cl_device_id, len(devices))
for i := 0; i < len(devices); i++ {
c_devices[i] = C.cl_device_id(devices[i].cl_device_id)
}
c_devices_ptr = &c_devices[0]
} else {
c_devices_ptr = nil
}
if pfn_notify != nil {
var c_user_data []unsafe.Pointer
c_user_data = make([]unsafe.Pointer, 2)
c_user_data[0] = user_data
c_user_data[1] = unsafe.Pointer(&pfn_notify)
ctx_notify[c_user_data[1]] = pfn_notify
c_context = C.CLCreateContext(c_properties_ptr,
C.cl_uint(len(c_devices)),
c_devices_ptr,
unsafe.Pointer(&c_user_data),
&c_errcode_ret)
} else {
c_context = C.clCreateContext(c_properties_ptr,
C.cl_uint(len(c_devices)),
c_devices_ptr,
nil,
nil,
&c_errcode_ret)
}
}
if errcode_ret != nil {
*errcode_ret = CL_int(c_errcode_ret)
}
return CL_context{c_context}
}
func CreateContext(platform *Platform, devType DeviceType) *Context {
var ctx Context
var error C.cl_int
properties := []C.cl_context_properties{CL_CONTEXT_PLATFORM, C.platform2property(platform.item), C.cl_context_properties(0)}
ctx.item = C.clCreateContextFromType(&properties[0], C.cl_device_type(devType), nil, nil, &error)
fmt.Printf("Context error:%d\n", error)
return &ctx
}
