Standard Unlit Distortion: Get Distortion only?

Hello,

I was trying out the new unlit particle shader but was unable to have distortion only. (like heat waves for example)

Additive modes make the entire particle lighter, no matter what color I put (even black), and multiply do the opposite.

Furthermore, with distortion, the entire particle isshows (as a full square), and adding an alpha to the diffuse texture did not create distortion only within that alpha.

So: how can I get distortion does does not lighten/darken the image (just distorts it), and how can I create an alpha (that apparently can't just be the alpha of the diffuse) so my distortion is not a big old square (the particle's full mesh).

Thank you

 

Main things to note: Using "Rendering Mode > Fade", and "Blend > 1". Alpha is coming from the diffuse texture, which is just a white circle texture with a soft edge, though the color doesn't actually matter, only the alpha.

 

Thank you for the answer, I will try that!

 

That worked! I simply did not know about the Blend amount.

Thank you for the excellent answer.