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LightmapperRD

Inherits: :ref:`Lightmapper<class_Lightmapper>` < :ref:`RefCounted<class_RefCounted>` < :ref:`Object<class_Object>`

The built-in GPU-based lightmapper for use with :ref:`LightmapGI<class_LightmapGI>`.

.. rst-class:: classref-introduction-group

Description

LightmapperRD ("RD" stands for :ref:`RenderingDevice<class_RenderingDevice>`) is the built-in GPU-based lightmapper for use with :ref:`LightmapGI<class_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 Vulkan backend (Forward+ or Mobile), not OpenGL.