Conversão de alfa

O nó do tipo Conversão de alfa converte a interpretação do canal alfa de uma imagem.

For compositing and rendering, Premultiplied Alpha is the standard in Blender. Render layers will be premultiplied alpha, and images loaded into rendering or compositing will be converted to this.

If you want to do a compositing operation with straight alpha, the Alpha Convert node can be used. Typically this would be a color correction operation where it might give better results working on RGB channels without alpha. If the alpha is converted to straight in the Compositor, it should be converted back to premultiplied before the Composite Output node, otherwise some artifacts might occur.

Inputs

Imagem

Standard color input.

Properties

Mapeamento

The direction of convert alpha. For details on the difference between both ways to store alpha values see Alpha Channel.

To Premultiplied

Converts from Straight Alpha to Premultiplied Alpha.

To Straight

Converts from Premultiplied Alpha to Straight Alpha.

Saídas

Imagem

Standard color output.