Adding a Baking Workflow to Three.JS

[bhouston]

This ties into the previous meta task that describes the progressive global illumination workflow. Basically once you can calculate global illumination, you likely want to bake it into the meshes for reuse. This would also be useful for ambient occlusion and shadow baking as well.

There are two aspects to a baking workflow.

UV Unwrapping via Mesh Color Textures
#14053

Render to Unwrapped Texture
#14054

[FlorentMasson]

Some previous works might be useful:

• Light Baking for three.js
• Runtime Lightmaps in PlayCanvas - (source)[https://github.com/playcanvas/engine/blob/master/src/scene/lightmapper.js]

[cptSwing]

This ties into the previous meta task that describes the progressive global illumination workflow. Basically once you can calculate global illumination, you likely want to bake it into the meshes for reuse. This would also be useful for ambient occlusion and shadow baking as well.

There are two aspects to a baking workflow.

To forgo the need to unwrap and RTT, one could also bake to meshes' vertex color RGB or A ..

[repalash]

I am working on a utility to unwrap geometry UVs and packing them into an atlas using xatlas here: https://github.com/repalash/xatlas-three