func GetCurrentDeviceInGlContext(go_ctx_properties []ContextPropertiesId) (*Device, error) {
var c_ctx_properties []C.cl_context_properties
defer C.free(c_ctx_properties)
for i, prop := range go_ctx_properties {
c_ctx_properties[i] = (C.cl_context_properties)(prop)
}
var device C.cl_device_id
err := C.CLGetGLContextInfo(&c_ctx_properties[0], (C.cl_gl_context_info)(GLContextCurrentDevice), C.size_t(unsafe.Sizeof(device)), unsafe.Pointer(&device), nil)
return &Device{id: device}, toError(err)
}
func GetAllDevicesInGlContext(go_ctx_properties []ContextPropertiesId) ([]*Device, error) {
var c_ctx_properties []C.cl_context_properties
defer C.free(c_ctx_properties)
for i, prop := range go_ctx_properties {
c_ctx_properties[i] = (C.cl_context_properties)(prop)
}
var devices []C.cl_device_id
var devCnt C.size_t
defer C.free(devices)
err := C.CLGetGLContextInfo(&c_ctx_properties[0], C.CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR, C.size_t(unsafe.Sizeof(devices)), unsafe.Pointer(&devices), &devCnt)
devicesL := make([]C.cl_device_id, int(devCnt))
defer C.free(devicesL)
err = C.CLGetGLContextInfo(&c_ctx_properties[0], C.CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR, devCnt, unsafe.Pointer(&devicesL), &devCnt)
if toError(err) != nil {
fmt.Printf("cl: failed to get all devices in GetAllDevicesInGlContext \n")
return nil, toError(err)
}
DeviceList := make([]*Device, len(devices))
for i, deviceId := range devicesL {
DeviceList[i].id = deviceId
}
return DeviceList, nil
}