Is it possible to fade between textures on a 3D object?

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I know you can have multiple textures on a 3D object but I'm not entirely sure how to access them. I have been using mainTexture but how do I access the others?

Basically, what I want to do is have a load of textures on a certain object and when the game stage changes, fade the alpha down one one and up on another, so that I'm basically fading between graphics. I can work that bit out... just how does one access the different textures? It's probably something really simple but any help greatly appreciated.

Cheers!

EDIT: Just had a brainwave that it's probably just like any other array... will try now.

Answer 1

Best Answer

Answer by Bunny83 · Jan 17, 2013 at 12:02 AM

You need to write a custom shader for this. The shader in Erics answer here might by a good start ;)

What texture properties are available depends only on the shader you use. Usually the main texture property is called "_MainTex", see the ShaderLab documentation for more details.

To set a texture for a material / shader at runtime you have to use Material.SetTexture. The property mainTexture is just a simplification like this:

 // C# (decompiled from UnityEngine.dll)
 public Texture mainTexture
 {
     get
     {
         return this.GetTexture("_MainTex");
     }
     set
     {
         this.SetTexture("_MainTex", value);
     }
 }

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POLYGAMe · Jan 17, 2013 at 12:13 AM 0

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Ah, okay, thanks. Will look into it. I have found a workaround, just swapping textures quickly, which is fine as it's a retro game but be good to sort this out for future reference. Cheers!

Answer 2

Answer by cdrandin · Jan 16, 2013 at 11:15 PM

Like start() uses a texture. Over time reduce alpha channel to 0, then when at 0 import a new texture then raise the alpha channel back to normal. Simple fade out and fade in with new material.

not sure if alpha or transparency. I don't know textures or anything like that.

You could also store the textures as array or just individuality, like startTexture, fadeInTexture

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POLYGAMe · Jan 16, 2013 at 11:25 PM 0

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That would fade out totally before fading back in. I need to fade from one texture to another, without fading to nothing in between, so I need two textures assigned to the object and fade the one on top to alpha of zero. I understand how to do that... but not sure how to access the other textures in the materials array... I need to scroll them etc.

Is it possible to fade between textures on a 3D object?

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