Nodes · Color
Associate
Colorv1coreConcat: Pointwise
Overview
Multiplies RGB by alpha. Do it after Copy'ing a matte in, before an over.
How to
How-to
- Wire an image whose RGB is straight (unpremultiplied) with an alpha in place — typically after a Copy that brought a matte in.
- The output has RGB × alpha, ready for an
over. - Pair it with Unassociate around a grade that must run on straight colour.
Inputs
| Input | What it takes |
|---|---|
| in | the image this node works on |
| mask | limits the effect to this matte — the engine's universal mask slot, applied for every node that declares it |
Outputs
| Output | Type |
|---|---|
| out | Image |
Parameters
| Parameter | Type | Default | What it does |
|---|---|---|---|
| disabled | Bool | false | Bypass: the node passes its first input through untouched (D in the graph). The knobs keep their values for when it comes back. |
| label | Text | A note shown under the node in the graph — what this node is FOR. Never affects the render or the cache. | |
| hide_input | Bool | false | Draw the node without its input wire — a tidy graph for a node whose source is obvious (a Dot, a viewer tap). |