:github_url: hide .. DO NOT EDIT THIS FILE!!! .. Generated automatically from Godot engine sources. .. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py. .. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/LightmapperRD.xml. .. _class_LightmapperRD: LightmapperRD ============= **Inherits:** :ref:`Lightmapper` **<** :ref:`RefCounted` **<** :ref:`Object` The built-in GPU-based lightmapper for use with :ref:`LightmapGI`. .. rst-class:: classref-introduction-group Description ----------- LightmapperRD ("RD" stands for :ref:`RenderingDevice`) is the built-in GPU-based lightmapper for use with :ref:`LightmapGI`. On most dedicated GPUs, it can bake lightmaps much faster than most CPU-based lightmappers. LightmapperRD uses compute shaders to bake lightmaps, so it does not require CUDA or OpenCL libraries to be installed to be usable. \ **Note:** Only usable when using the RenderingDevice backend (Forward+ or Mobile renderers), not Compatibility. .. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)` .. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)` .. |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.)` .. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)` .. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)` .. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)` .. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)` .. |void| replace:: :abbr:`void (No return value.)`