mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
36 lines
1.9 KiB
ReStructuredText
36 lines
1.9 KiB
ReStructuredText
|
==============================
|
||
|
Initialization
|
||
|
==============================
|
||
|
|
||
|
.. index:: initialization
|
||
|
|
||
|
When it comes to running |VTKm| code, there are a few ways in which various facilities, such as logging device connections, and device configuration parameters, can be initialized.
|
||
|
The preferred method of initializing these features is to run the :func:`vtkm::cont::Initialize` function.
|
||
|
Although it is not strictly necessary to call :func:`vtkm::cont::Initialize`, it is recommended to set up state and check for available devices.
|
||
|
|
||
|
.. doxygenfunction:: vtkm::cont::Initialize(int &argc, char *argv[], InitializeOptions opts)
|
||
|
|
||
|
.. index::
|
||
|
single: argc
|
||
|
single: argv
|
||
|
|
||
|
:func:`vtkm::cont::Initialize` can be called without any arguments, in which case |VTKm| will be initialized with defaults.
|
||
|
But it can also optionally take the ``argc`` and ``argv`` arguments to the ``main`` function to parse some options that control the state of |VTKm|.
|
||
|
|VTKm| accepts arguments that, for example, configure the compute device to use or establish logging levels.
|
||
|
Any arguments that are handled by |VTKm| are removed from the ``argc``/``argv`` list so that your program can then respond to the remaining arguments.
|
||
|
|
||
|
:func:`vtkm::cont::Initialize` returns a :struct:`vtkm::cont::InitializeResult` structure.
|
||
|
This structure contains information about the supported arguments and options selected during initialization.
|
||
|
|
||
|
.. doxygenstruct:: vtkm::cont::InitializeResult
|
||
|
:members:
|
||
|
|
||
|
:func:`vtkm::cont::Initialize` takes an optional third argument that specifies some options on the behavior of the argument parsing.
|
||
|
The options are specified as a bit-wise "or" of fields specified in the :enum:`vtkm::cont::InitializeOptions` enum.
|
||
|
|
||
|
.. doxygenenum:: vtkm::cont::InitializeOptions
|
||
|
|
||
|
.. load-example:: BasicInitialize
|
||
|
:file: GuideExampleInitialization.cxx
|
||
|
:caption: Calling :func:`vtkm::cont::Initialize`.
|