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Added the current 3.4 godot docs as a base.
2022-03-18 17:46:08 +01:00
:github_url: hide
.. Generated automatically by doc/tools/make_rst.py in Godot's source tree.
.. DO NOT EDIT THIS FILE, but the BakedLightmap.xml source instead.
.. The source is found in doc/classes or modules/<name>/doc_classes.
.. _class_BakedLightmap:
BakedLightmap
=============
**Inherits:** :ref:`VisualInstance<class_VisualInstance>` **<** :ref:`CullInstance<class_CullInstance>` **<** :ref:`Spatial<class_Spatial>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
Prerendered indirect light map for a scene.
Description
-----------
Baked lightmaps are an alternative workflow for adding indirect (or baked) lighting to a scene. Unlike the :ref:`GIProbe<class_GIProbe>` approach, baked lightmaps work fine on low-end PCs and mobile devices as they consume almost no resources in run-time.
**Procedural generation:** Lightmap baking functionality is only available in the editor. This means ``BakedLightmap`` is not suited to procedurally generated or user-built levels. For procedurally generated or user-built levels, use :ref:`GIProbe<class_GIProbe>` instead.
**Note:** Due to how lightmaps work, most properties only have a visible effect once lightmaps are baked again.
Tutorials
---------
- :doc:`../tutorials/3d/baked_lightmaps`
Properties
----------
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`bool<class_bool>` | :ref:`atlas_generate<class_BakedLightmap_property_atlas_generate>` | ``true`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`int<class_int>` | :ref:`atlas_max_size<class_BakedLightmap_property_atlas_max_size>` | ``4096`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`bias<class_BakedLightmap_property_bias>` | ``0.005`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`bounce_indirect_energy<class_BakedLightmap_property_bounce_indirect_energy>` | ``1.0`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`int<class_int>` | :ref:`bounces<class_BakedLightmap_property_bounces>` | ``3`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`capture_cell_size<class_BakedLightmap_property_capture_cell_size>` | ``0.5`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`bool<class_bool>` | :ref:`capture_enabled<class_BakedLightmap_property_capture_enabled>` | ``true`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`capture_propagation<class_BakedLightmap_property_capture_propagation>` | ``1.0`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`BakeQuality<enum_BakedLightmap_BakeQuality>` | :ref:`capture_quality<class_BakedLightmap_property_capture_quality>` | ``1`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`default_texels_per_unit<class_BakedLightmap_property_default_texels_per_unit>` | ``16.0`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`Color<class_Color>` | :ref:`environment_custom_color<class_BakedLightmap_property_environment_custom_color>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`float<class_float>` | :ref:`environment_custom_energy<class_BakedLightmap_property_environment_custom_energy>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`Sky<class_Sky>` | :ref:`environment_custom_sky<class_BakedLightmap_property_environment_custom_sky>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`Vector3<class_Vector3>` | :ref:`environment_custom_sky_rotation_degrees<class_BakedLightmap_property_environment_custom_sky_rotation_degrees>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`Color<class_Color>` | :ref:`environment_min_light<class_BakedLightmap_property_environment_min_light>` | ``Color( 0, 0, 0, 1 )`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`EnvironmentMode<enum_BakedLightmap_EnvironmentMode>` | :ref:`environment_mode<class_BakedLightmap_property_environment_mode>` | ``0`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`Vector3<class_Vector3>` | :ref:`extents<class_BakedLightmap_property_extents>` | ``Vector3( 10, 10, 10 )`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`String<class_String>` | :ref:`image_path<class_BakedLightmap_property_image_path>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`BakedLightmapData<class_BakedLightmapData>` | :ref:`light_data<class_BakedLightmap_property_light_data>` | |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`BakeQuality<enum_BakedLightmap_BakeQuality>` | :ref:`quality<class_BakedLightmap_property_quality>` | ``1`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`bool<class_bool>` | :ref:`use_color<class_BakedLightmap_property_use_color>` | ``true`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`bool<class_bool>` | :ref:`use_denoiser<class_BakedLightmap_property_use_denoiser>` | ``true`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
| :ref:`bool<class_bool>` | :ref:`use_hdr<class_BakedLightmap_property_use_hdr>` | ``true`` |
+------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------+---------------------------+
Methods
-------
+------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`BakeError<enum_BakedLightmap_BakeError>` | :ref:`bake<class_BakedLightmap_method_bake>` **(** :ref:`Node<class_Node>` from_node=null, :ref:`String<class_String>` data_save_path="" **)** |
+------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
Enumerations
------------
.. _enum_BakedLightmap_BakeQuality:
.. _class_BakedLightmap_constant_BAKE_QUALITY_LOW:
.. _class_BakedLightmap_constant_BAKE_QUALITY_MEDIUM:
.. _class_BakedLightmap_constant_BAKE_QUALITY_HIGH:
.. _class_BakedLightmap_constant_BAKE_QUALITY_ULTRA:
enum **BakeQuality**:
- **BAKE_QUALITY_LOW** = **0** --- The lowest bake quality mode. Fastest to calculate.
- **BAKE_QUALITY_MEDIUM** = **1** --- The default bake quality mode.
- **BAKE_QUALITY_HIGH** = **2** --- A higher bake quality mode. Takes longer to calculate.
- **BAKE_QUALITY_ULTRA** = **3** --- The highest bake quality mode. Takes the longest to calculate.
----
.. _enum_BakedLightmap_BakeError:
.. _class_BakedLightmap_constant_BAKE_ERROR_OK:
.. _class_BakedLightmap_constant_BAKE_ERROR_NO_SAVE_PATH:
.. _class_BakedLightmap_constant_BAKE_ERROR_NO_MESHES:
.. _class_BakedLightmap_constant_BAKE_ERROR_CANT_CREATE_IMAGE:
.. _class_BakedLightmap_constant_BAKE_ERROR_LIGHTMAP_SIZE:
.. _class_BakedLightmap_constant_BAKE_ERROR_INVALID_MESH:
.. _class_BakedLightmap_constant_BAKE_ERROR_USER_ABORTED:
.. _class_BakedLightmap_constant_BAKE_ERROR_NO_LIGHTMAPPER:
.. _class_BakedLightmap_constant_BAKE_ERROR_NO_ROOT:
enum **BakeError**:
- **BAKE_ERROR_OK** = **0** --- Baking was successful.
- **BAKE_ERROR_NO_SAVE_PATH** = **1** --- Returns if no viable save path is found. This can happen where an :ref:`image_path<class_BakedLightmap_property_image_path>` is not specified or when the save location is invalid.
- **BAKE_ERROR_NO_MESHES** = **2** --- Currently unused.
- **BAKE_ERROR_CANT_CREATE_IMAGE** = **3** --- Returns when the baker cannot save per-mesh textures to file.
- **BAKE_ERROR_LIGHTMAP_SIZE** = **4** --- The size of the generated lightmaps is too large.
- **BAKE_ERROR_INVALID_MESH** = **5** --- Some mesh contains UV2 values outside the ``[0,1]`` range.
- **BAKE_ERROR_USER_ABORTED** = **6** --- Returns if user cancels baking.
- **BAKE_ERROR_NO_LIGHTMAPPER** = **7** --- Returns if lightmapper can't be created. Unless you are using a custom lightmapper, please report this as bug.
- **BAKE_ERROR_NO_ROOT** = **8** --- There is no root node to start baking from. Either provide ``from_node`` argument or attach this node to a parent that should be used as root.
----
.. _enum_BakedLightmap_EnvironmentMode:
.. _class_BakedLightmap_constant_ENVIRONMENT_MODE_DISABLED:
.. _class_BakedLightmap_constant_ENVIRONMENT_MODE_SCENE:
.. _class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_SKY:
.. _class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_COLOR:
enum **EnvironmentMode**:
- **ENVIRONMENT_MODE_DISABLED** = **0** --- No environment is used during baking.
- **ENVIRONMENT_MODE_SCENE** = **1** --- The baked environment is automatically picked from the current scene.
- **ENVIRONMENT_MODE_CUSTOM_SKY** = **2** --- A custom sky is used as environment during baking.
- **ENVIRONMENT_MODE_CUSTOM_COLOR** = **3** --- A custom solid color is used as environment during baking.
Property Descriptions
---------------------
.. _class_BakedLightmap_property_atlas_generate:
- :ref:`bool<class_bool>` **atlas_generate**
+-----------+-----------------------------+
| *Default* | ``true`` |
+-----------+-----------------------------+
| *Setter* | set_generate_atlas(value) |
+-----------+-----------------------------+
| *Getter* | is_generate_atlas_enabled() |
+-----------+-----------------------------+
When enabled, the lightmapper will merge the textures for all meshes into a single large layered texture. Not supported in GLES2.
----
.. _class_BakedLightmap_property_atlas_max_size:
- :ref:`int<class_int>` **atlas_max_size**
+-----------+---------------------------+
| *Default* | ``4096`` |
+-----------+---------------------------+
| *Setter* | set_max_atlas_size(value) |
+-----------+---------------------------+
| *Getter* | get_max_atlas_size() |
+-----------+---------------------------+
Maximum size of each lightmap layer, only used when :ref:`atlas_generate<class_BakedLightmap_property_atlas_generate>` is enabled.
----
.. _class_BakedLightmap_property_bias:
- :ref:`float<class_float>` **bias**
+-----------+-----------------+
| *Default* | ``0.005`` |
+-----------+-----------------+
| *Setter* | set_bias(value) |
+-----------+-----------------+
| *Getter* | get_bias() |
+-----------+-----------------+
Raycasting bias used during baking to avoid floating point precision issues.
----
.. _class_BakedLightmap_property_bounce_indirect_energy:
- :ref:`float<class_float>` **bounce_indirect_energy**
+-----------+-----------------------------------+
| *Default* | ``1.0`` |
+-----------+-----------------------------------+
| *Setter* | set_bounce_indirect_energy(value) |
+-----------+-----------------------------------+
| *Getter* | get_bounce_indirect_energy() |
+-----------+-----------------------------------+
The energy multiplier for each bounce. Higher values will make indirect lighting brighter. A value of ``1.0`` represents physically accurate behavior, but higher values can be used to make indirect lighting propagate more visibly when using a low number of bounces. This can be used to speed up bake times by lowering the number of :ref:`bounces<class_BakedLightmap_property_bounces>` then increasing :ref:`bounce_indirect_energy<class_BakedLightmap_property_bounce_indirect_energy>`. Unlike :ref:`BakedLightmapData.energy<class_BakedLightmapData_property_energy>`, this property does not affect direct lighting emitted by light nodes, emissive materials and the environment.
**Note:** :ref:`bounce_indirect_energy<class_BakedLightmap_property_bounce_indirect_energy>` only has an effect if :ref:`bounces<class_BakedLightmap_property_bounces>` is set to a value greater than or equal to ``1``.
----
.. _class_BakedLightmap_property_bounces:
- :ref:`int<class_int>` **bounces**
+-----------+--------------------+
| *Default* | ``3`` |
+-----------+--------------------+
| *Setter* | set_bounces(value) |
+-----------+--------------------+
| *Getter* | get_bounces() |
+-----------+--------------------+
Number of light bounces that are taken into account during baking. See also :ref:`bounce_indirect_energy<class_BakedLightmap_property_bounce_indirect_energy>`.
----
.. _class_BakedLightmap_property_capture_cell_size:
- :ref:`float<class_float>` **capture_cell_size**
+-----------+------------------------------+
| *Default* | ``0.5`` |
+-----------+------------------------------+
| *Setter* | set_capture_cell_size(value) |
+-----------+------------------------------+
| *Getter* | get_capture_cell_size() |
+-----------+------------------------------+
Grid size used for real-time capture information on dynamic objects.
----
.. _class_BakedLightmap_property_capture_enabled:
- :ref:`bool<class_bool>` **capture_enabled**
+-----------+----------------------------+
| *Default* | ``true`` |
+-----------+----------------------------+
| *Setter* | set_capture_enabled(value) |
+-----------+----------------------------+
| *Getter* | get_capture_enabled() |
+-----------+----------------------------+
When enabled, an octree containing the scene's lighting information will be computed. This octree will then be used to light dynamic objects in the scene.
----
.. _class_BakedLightmap_property_capture_propagation:
- :ref:`float<class_float>` **capture_propagation**
+-----------+--------------------------------+
| *Default* | ``1.0`` |
+-----------+--------------------------------+
| *Setter* | set_capture_propagation(value) |
+-----------+--------------------------------+
| *Getter* | get_capture_propagation() |
+-----------+--------------------------------+
Bias value to reduce the amount of light propagation in the captured octree.
----
.. _class_BakedLightmap_property_capture_quality:
- :ref:`BakeQuality<enum_BakedLightmap_BakeQuality>` **capture_quality**
+-----------+----------------------------+
| *Default* | ``1`` |
+-----------+----------------------------+
| *Setter* | set_capture_quality(value) |
+-----------+----------------------------+
| *Getter* | get_capture_quality() |
+-----------+----------------------------+
Bake quality of the capture data.
----
.. _class_BakedLightmap_property_default_texels_per_unit:
- :ref:`float<class_float>` **default_texels_per_unit**
+-----------+------------------------------------+
| *Default* | ``16.0`` |
+-----------+------------------------------------+
| *Setter* | set_default_texels_per_unit(value) |
+-----------+------------------------------------+
| *Getter* | get_default_texels_per_unit() |
+-----------+------------------------------------+
If a baked mesh doesn't have a UV2 size hint, this value will be used to roughly compute a suitable lightmap size.
----
.. _class_BakedLightmap_property_environment_custom_color:
- :ref:`Color<class_Color>` **environment_custom_color**
+----------+-------------------------------------+
| *Setter* | set_environment_custom_color(value) |
+----------+-------------------------------------+
| *Getter* | get_environment_custom_color() |
+----------+-------------------------------------+
The environment color when :ref:`environment_mode<class_BakedLightmap_property_environment_mode>` is set to :ref:`ENVIRONMENT_MODE_CUSTOM_COLOR<class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_COLOR>`.
----
.. _class_BakedLightmap_property_environment_custom_energy:
- :ref:`float<class_float>` **environment_custom_energy**
+----------+--------------------------------------+
| *Setter* | set_environment_custom_energy(value) |
+----------+--------------------------------------+
| *Getter* | get_environment_custom_energy() |
+----------+--------------------------------------+
The energy scaling factor when when :ref:`environment_mode<class_BakedLightmap_property_environment_mode>` is set to :ref:`ENVIRONMENT_MODE_CUSTOM_COLOR<class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_COLOR>` or :ref:`ENVIRONMENT_MODE_CUSTOM_SKY<class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_SKY>`.
----
.. _class_BakedLightmap_property_environment_custom_sky:
- :ref:`Sky<class_Sky>` **environment_custom_sky**
+----------+-----------------------------------+
| *Setter* | set_environment_custom_sky(value) |
+----------+-----------------------------------+
| *Getter* | get_environment_custom_sky() |
+----------+-----------------------------------+
The :ref:`Sky<class_Sky>` resource to use when :ref:`environment_mode<class_BakedLightmap_property_environment_mode>` is set o :ref:`ENVIRONMENT_MODE_CUSTOM_SKY<class_BakedLightmap_constant_ENVIRONMENT_MODE_CUSTOM_SKY>`.
----
.. _class_BakedLightmap_property_environment_custom_sky_rotation_degrees:
- :ref:`Vector3<class_Vector3>` **environment_custom_sky_rotation_degrees**
+----------+----------------------------------------------------+
| *Setter* | set_environment_custom_sky_rotation_degrees(value) |
+----------+----------------------------------------------------+
| *Getter* | get_environment_custom_sky_rotation_degrees() |
+----------+----------------------------------------------------+
The rotation of the baked custom sky.
----
.. _class_BakedLightmap_property_environment_min_light:
- :ref:`Color<class_Color>` **environment_min_light**
+-----------+----------------------------------+
| *Default* | ``Color( 0, 0, 0, 1 )`` |
+-----------+----------------------------------+
| *Setter* | set_environment_min_light(value) |
+-----------+----------------------------------+
| *Getter* | get_environment_min_light() |
+-----------+----------------------------------+
Minimum ambient light for all the lightmap texels. This doesn't take into account any occlusion from the scene's geometry, it simply ensures a minimum amount of light on all the lightmap texels. Can be used for artistic control on shadow color.
----
.. _class_BakedLightmap_property_environment_mode:
- :ref:`EnvironmentMode<enum_BakedLightmap_EnvironmentMode>` **environment_mode**
+-----------+-----------------------------+
| *Default* | ``0`` |
+-----------+-----------------------------+
| *Setter* | set_environment_mode(value) |
+-----------+-----------------------------+
| *Getter* | get_environment_mode() |
+-----------+-----------------------------+
Decides which environment to use during baking.
----
.. _class_BakedLightmap_property_extents:
- :ref:`Vector3<class_Vector3>` **extents**
+-----------+---------------------------+
| *Default* | ``Vector3( 10, 10, 10 )`` |
+-----------+---------------------------+
| *Setter* | set_extents(value) |
+-----------+---------------------------+
| *Getter* | get_extents() |
+-----------+---------------------------+
Size of the baked lightmap. Only meshes inside this region will be included in the baked lightmap, also used as the bounds of the captured region for dynamic lighting.
----
.. _class_BakedLightmap_property_image_path:
- :ref:`String<class_String>` **image_path**
+----------+-----------------------+
| *Setter* | set_image_path(value) |
+----------+-----------------------+
| *Getter* | get_image_path() |
+----------+-----------------------+
Deprecated, in previous versions it determined the location where lightmaps were be saved.
----
.. _class_BakedLightmap_property_light_data:
- :ref:`BakedLightmapData<class_BakedLightmapData>` **light_data**
+----------+-----------------------+
| *Setter* | set_light_data(value) |
+----------+-----------------------+
| *Getter* | get_light_data() |
+----------+-----------------------+
The calculated light data.
----
.. _class_BakedLightmap_property_quality:
- :ref:`BakeQuality<enum_BakedLightmap_BakeQuality>` **quality**
+-----------+-------------------------+
| *Default* | ``1`` |
+-----------+-------------------------+
| *Setter* | set_bake_quality(value) |
+-----------+-------------------------+
| *Getter* | get_bake_quality() |
+-----------+-------------------------+
Determines the amount of samples per texel used in indrect light baking. The amount of samples for each quality level can be configured in the project settings.
----
.. _class_BakedLightmap_property_use_color:
- :ref:`bool<class_bool>` **use_color**
+-----------+----------------------+
| *Default* | ``true`` |
+-----------+----------------------+
| *Setter* | set_use_color(value) |
+-----------+----------------------+
| *Getter* | is_using_color() |
+-----------+----------------------+
Store full color values in the lightmap textures. When disabled, lightmap textures will store a single brightness channel. Can be disabled to reduce disk usage if the scene contains only white lights or you don't mind losing color information in indirect lighting.
----
.. _class_BakedLightmap_property_use_denoiser:
- :ref:`bool<class_bool>` **use_denoiser**
+-----------+-------------------------+
| *Default* | ``true`` |
+-----------+-------------------------+
| *Setter* | set_use_denoiser(value) |
+-----------+-------------------------+
| *Getter* | is_using_denoiser() |
+-----------+-------------------------+
When enabled, a lightmap denoiser will be used to reduce the noise inherent to Monte Carlo based global illumination.
----
.. _class_BakedLightmap_property_use_hdr:
- :ref:`bool<class_bool>` **use_hdr**
+-----------+--------------------+
| *Default* | ``true`` |
+-----------+--------------------+
| *Setter* | set_use_hdr(value) |
+-----------+--------------------+
| *Getter* | is_using_hdr() |
+-----------+--------------------+
If ``true``, stores the lightmap textures in a high dynamic range format (EXR). If ``false``, stores the lightmap texture in a low dynamic range PNG image. This can be set to ``false`` to reduce disk usage, but light values over 1.0 will be clamped and you may see banding caused by the reduced precision.
**Note:** Setting :ref:`use_hdr<class_BakedLightmap_property_use_hdr>` to ``true`` will decrease lightmap banding even when using the GLES2 backend or if :ref:`ProjectSettings.rendering/quality/depth/hdr<class_ProjectSettings_property_rendering/quality/depth/hdr>` is ``false``.
Method Descriptions
-------------------
.. _class_BakedLightmap_method_bake:
- :ref:`BakeError<enum_BakedLightmap_BakeError>` **bake** **(** :ref:`Node<class_Node>` from_node=null, :ref:`String<class_String>` data_save_path="" **)**
Bakes the lightmap, scanning from the given ``from_node`` root and saves the resulting :ref:`BakedLightmapData<class_BakedLightmapData>` in ``data_save_path``. If no root node is provided, parent of this node will be used as root instead. If no save path is provided it will try to match the path from the current :ref:`light_data<class_BakedLightmap_property_light_data>`.
.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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