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Question by m_truly · Apr 17, 2016 at 03:50 PM · shader mapping uvs

Composite Materials/Multiple UVs?

Imagine a 3d model of a section of pipe. The pipe has UV coordinates (channel 1 in MAX, channel 0 in Unity) for the pipe surface texture.

Now imagine that both ends of the pipe need to fade to be 100% transparent. So the pipe is opaque in the middle and fades to be transparent on both ends.

In MAX, it's easy to simply apply a second UV mapping (channel 2) and use a gradient ramp to make both ends of the pipe fade to transparent (while preserving UV1 for the pipe texture).

How would I accomplish this in Unity? Are there asset tools that would make this easy?

Thanks for any ideas!

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