RGBA Transfer

RGBA Transfer is an addon that allows to bake, edit and transfer RGBA channels.

It has a wrapper around the native Blender baking function which extends existing functionality.

It adds operators to edit the color and the alpha channels of images and mesh color attributes.

RGBA Transfer Features

• Blender baking wrapper
  • Transfer color and alpha channels
  • Bake to images and mesh color attributes
  • Transfer images across similar meshes with different topology
  • Speed up bakes with subprocessing
  • Bake with a mask to select which mesh areas to influence
  • Reiterate bakes in case of edits conveniently
• RGBA operators
  • Channel packing
  • Premultiply Color with Alpha
  • Preview Material with a custom bake configuration
  • Create a setup to transfer images
  • Create a setup to bake normals from a source high poly mesh to a target low poly mesh

RGBA Transfer Documentation

https://greenjadeleaf.github.io/rgba-transfer/

Practical use cases

• Example A
  • A mesh has paint work but the topology must be changed because the mesh deformation or rendering has flaws.
  • The color image map can be transferred from the initial mesh to the modified mesh to preserve most of the paint work.
  • The source and target meshes must have a similar shape.
• Example B
  • A mesh has paint work but the UV map must be changed because there is visible texture stretching or overlapping.
  • The color image map can be transferred from the initial UV map to the modified UV map to preserve most of the paint work.
  • The source mesh must have the initial and the modified UV map to perform the transfer.
• Example C
  • Bake images with transparency on the surface of meshes.
  • It can be performed with 3D texture painting but it is limited in 2D screen space whereas baking with meshes allows more accuracy and casts images in 3D space.
  • The bake operator in RGBA Transfer can blend the baked image with the existing image.

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