Multiplying with vertex color no longer works

[craggy spindle]

Why can't I multiply a color with vertex color or particle vertex color anymore?

When I use "color over lifetime" in shuriken and set alpha to 0, nothing happens. It's like it's not affecting it. What am I forgetting? This used to work.

[restive gust]

What do you imply by "anymore"? A version change? Changing a shader?

[craggy spindle]

No, sorry, I meant it always worked in the past with different shaders

[limpid kernel]

You could show this one

[craggy spindle]

I'm not at home right now but it's just a color (hdr) multiplied with vertex color, then multiplied with a scrolling noise for the color part

[limpid kernel]

Or so you assume
Usually errors are between the assumptions and reality
All I can say is that particle system's vertex color behavior hasn't changed

[craggy spindle]

There you go

I even unplugged the scrolling noise and plugged the multiply straight into albedo on the master stack, no difference

particles just pop in and out all the same even when my "color over lifetime" is just alpha 0

When I set my start color to 0 alpha, same thing

[surreal shell]

Base Color in the master stack is a Vector3, so only sets the RGB. Alpha is a separate block/port which shows when the graph is set to Transparent

[craggy spindle]

so I need to split the A from vertex color and multiply it by the other stuff I'm doing in alpha?

[surreal shell]

Yes

[craggy spindle]

Ah, you're right

[craggy spindle]

I checked another one of my shaders

I used particle vertex color which had both albedo and alpha outputs

and I multiplied alpha with the other stuff