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Question by markhula · Nov 07, 2011 at 03:22 PM · alpha

Mobile model alpha fading

Hi all,

Basically I wish to 'simply' fade a model's alpha. I have read other threads and found transparent/bump diffused to work (in the editor). My question is what's the equivalent mobile shader for this? or am I meant to write my own ???

Any advice appreciated

Cheers

p.s. I haven't tried it on a real device so don't know if the actual alpha fade will work but assume it's highly inefficient on this platform.

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avatar image syclamoth · Nov 07, 2011 at 11:47 PM 0
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Simple alpha fading isn't really a problem. I'd stay away from bumped shaders, though...

avatar image Steven-Walker · Nov 08, 2011 at 02:24 AM 0
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Not sure I understand your question... are you looking for a shader that supports opacity that will work on mobile devices?

avatar image markhula · Nov 08, 2011 at 09:34 AM 0
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:-) I guess my question is which shader is the most efficient for mobile devices to achieve the alpha effect I want?

Thanks all.

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Answer by Steven-Walker · Nov 08, 2011 at 05:05 PM

I don't think there is a built-in mobile shader that supports diffuse, bump and alpha. You could modify one though to include alpha, multiplying a float value to the alpha. You can download the source code for all the built-in shaders as a starting point, or perhaps you can find one that someone has already created. http://unity3d.com/support/resources/assets/built-in-shaders.html

I'd suggest too that you test out the performance on a device. In my experience alpha fading objects works but can affect performance.

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