For our own asset pipeline construction, we need to use SP's custom channel as a data map. The custom shader then reads the texture as the basis for rendering. Textures are generated by the texture generator created by SD. Reference file: temporaryPlan.spp, see Shader: Toon.glsl, as shown.
Render the final result correctly
Layer settings
Cartoon Map User Channel
SP defaults to premultiplied UVs and expands the channel map, which causes the data map to not read as expected, as shown. Reference file: bad.spp, as shown.
render result
Data channel error due to premultiplied UVs
Because the relevant settings were not found, and the related API could not close the texture premultiplication and expansion for a certain channel. So try to use another auxiliary patch with fully unwrapped UVs to solve the problem.
Hope, whether the official can provide relevant solutions. Or increase the corresponding settings of the channel. Or provide APIs that can control related functions.
demo file
https://drive.google.com/file/d/1-9xalr7fYIiOfxXotG1I8yWjKgGbmuMm/view?usp=sharing
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