Motion
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ReferenceMaterial nodesColour

Unpremultiply Alpha

Divides a premultiplied colour by its alpha, back to straight alpha.

Colourunpremultiply

Inputs

PinTypeStarts atNotes
RGBAcolourvec4(1, 1, 1, 1)–

Outputs

PinType
outvec4

The code it becomes

What Studio writes for the graph below: a few lines of the material's shader, worked out for every pixel.

void mainImage(out vec4 fragColor, in vec2 fragCoord){    vec4 n2_out = lib_unpremultiply(vec4(1.0, 1.0, 1.0, 1.0));    fragColor = vec4((n2_out).xyz, 1.0);}

In a graph

Texture coordinates into the node, and the node into the material, as Studio draws them.