Lightmap Mesh Texture 
Mircosoft Game Dev
JANUARY 15, 2023
supports advanced global illumination techniques such as lightmapping (including SH lightmapping), Voxel GI (which is fully real-time) and SDFGI (which is a single click, open world GI solution). The most common types of streaming are: Texture streaming : All textures are loaded in a tiny size by default.
Mircosoft Game Dev
DECEMBER 13, 2017
The solution to these problems is to add support for a more traditional lightmapper (pre-baked light texture). Light is precomputed offline and rendered to a texture, which is then used by the geometry. Lightmapping is a very cheap operation, so it should run fine even on low end mobile. What are the performance limitations?
Cocos
FEBRUARY 16, 2023
(engine#14218) [XR] AR engine module update Fix shadowmap lowp with huawei and reflection probe brightness (engine#14058) Fix shader compilation error with the new version of lightmap (engine#14071) Fix unsynchronized model data issue when adding lod levels dynamically (engine#14054) Fix the issue that lod is not working properly when forced to use (..)
Cocos
MARCH 26, 2023
Fixed an issue where Mesh objects created through MeshUtils.createMesh caused data anomalies. Fixed an issue where the setter for the Mesh:: _ hash attribute was not bound. When the user turns on high-precision lightmap baking, 16-bit colors are used instead of 8-bit colors, and AO channels are baked separately.
Mircosoft Game Dev
MAY 24, 2021
Notably, Windows users could experience crashes when baking lightmaps. Import: Print a warning when importing a repeating NPOT texture in a GLES2 project ( GH-48817 ). Import: glTF: Improved error handling around invalid images and invalid meshes ( GH-48904 , GH-48912 ). was thus subject to this crash when baking lightmaps.
Mircosoft Game Dev
JUNE 27, 2020
SDFGI is something akin to a dynamic real-time lightmap (but it does not requiere unwrapping, nor does it use textures). Ensure your meshes are marked as "Static Bake", then enable SDFGI in the Environment settings. What can it do? As long as walls are thicker than a voxel for a given cascade, light won't go through.
Mircosoft Game Dev
AUGUST 10, 2022
x CPU lightmapper and adding a new debug draw mode for visualizing the texel density of lightmaps. Previously every LightmapGI node used to store its lightmap atlas in a single large image. I modified the implementation to allow saving the lightmap atlas as multiple images if it doesn't fit inside a single image.
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