Blending Textures with Tree Leaves Shader (for seasons)

Unity Engine
1

I’m trying to modify the tree leaves shader in order to animate a change of season.

I have spent hours trying to figure this out. I’ve looked up several examples of blending 2 textures using a slider/range and my attempt to implement it within the Tree Leaves.shader fails. It will only blend from 1 texture to black.

The main command for blending I have found is this:

SetTexture[_MainTex]
{
     Combine texture
}

SetTexture[_Texture2]
{
     ConstantColor (0,0,0, [_Blend])
     Combine texture Lerp(constant) previous
}

It seems like I can’t get the shader to use the second texture. It will only show the first and then blend to black. There’s a lot of other stuff going on in the shader and I wonder if something in the CG is causing this problem.

I really appreciate any help.

Thanks!

2

Don’t mix Cg with texture combiners.

Also, you never need

{Combine texture}
3

Hrmm…what are my options then? Do I need to do something in CG? I really like the way the Leaves shader looks.

Any direction would be helpful.

Would I be better of just creating a double sided shader and making sure I have good lighting?

4

I don’t know what that is.

Good lighting and double-sided don’t mix. If one side of something is lit, so is the other; it doesn’t make sense. I guess if your leaves are really thin it might be acceptable.