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I realized that if I create two UV's in the Blender, Unity automatically reads the first UV channel as "Base" and the second as "lightmap". And bumpmap? I created Difuse, Normal Map (Bump) and Lightmap in Blender, each one with its respective UV map channel. Consequently, now in Unity, I need to use the channels Base, Bump and the lightmap of "Lightmapped / Bumped Diffuse" shader. How should I organize my UV's in the blender so that the unity read each one for each channel of the shader? The Unity reads more than two UV channels of blender? How does this reading of the relationship between Blender's UV's and shaders channels of Unity?
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Unity can only use 2 UV sets. It would be much better if the normal map read the second UV (the same of lightmap) and not the first. For thus we would have a much better optimization since we could use small tiled textures for the first UV. The way it is today, we can not use tiled with normal map texture and lightmap. But we have to create a bigger texture for diffuse with several pieces of tiled texture duplicated. Do you agree? Have any other solution to use small tiled texture for diffuse with bumpmap and lightmap?
Jul 30 '10 at 05:42 PM
Lucio
@Lucio, I don't really understand what you're trying to do, but you can use either set of UVs to do whatever you want. You're not stuck with the built-in shaders; you can alter them and use custom shaders for any purpose.
Jul 30 '10 at 07:03 PM
Eric5h5
Hi, @Eric5h5! What I'm trying do explain is clear explained in this image http://www.4shared.com/photo/eKIBn0g-/unity.html I realize that unfortunately we do not have this interface I suggested in this shader. The solution is that even what you said. But I'm still beginning to study the creation of shaders. Could you tell me more specifically what and where should I look on the definition of uv map by custom shader code? Thank you!
Aug 02 '10 at 08:10 PM
Lucio
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