I’m having a lot of problems understanding the workflow between B2M, Player and Utility. And I cannot get the Substances to export channels from within unity. And there is no documentation. Is anyone else in this same place? Have you figured it all out and want to explain it ti me? Thanks.
B2M can indeed be used from inside Unity, the Player or Utility, here are the main differences
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From the Player, you can input your textures, set your parameters right and export the resulting textures as bitmaps.
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Using B2M with Utility allows you to embed your bitmap inputs into the substance file as a jpeg, so when you import the substance in Unity, you will have a substance with no image input.
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In Unity, you can use the B2M (or any other substance) to generate the outputs the same way than in the Player, the main difference being that you don’t have to export as bitmaps, as the parameters you set will be carried over when you save and when you build your scenes.
As for exporting bitmaps from B2M inside Unity, there is a bug in he last 3.5 builds preventing to do so, what version of Unity are you using ?
I’m using Unity 4.0.0f7. I was advised on the allegorithmic site that the bug persists in 4 and will be fixed in an up coming patch.