Combine/Separate Nodes

All of these nodes do essentially the same thing:

Separate: Split out an image into its composite color channels.
Combine: Re/combine an image from its composite color channels.

These nodes can be used to manipulate each color channel independently. Each type is differentiated in the applied Color Model.

In compositing and texture context each node supports the Alpha channel. In the texture context only RGB channels are available. In the shading context of Cycles and Eevee, a combine and separate node is added for HSV.

The Combine nodes can also be used to input single color values. For RGBA and HSVA color models it is recommended to use the RGB节点. Some common operations could easier be executed with the 颜色节点.

Separate/Combine RGBA Nodes

Input/Output

图像: Standard image in/output.

R (Red)
G (Green)
B (Blue)
A (Alpha)

属性

这个节点没有属性。

示例

../../../_images/compositing_types_converter_combine-separate_example-combine-rgba.png — 模糊Alpha通道举例。

在第一个例子中，我们采用Alpha通道并将其模糊，然后将其与颜色合并。当放置在场景中时，它的边缘将融入场景，而不会具有非常硬的边缘。这几乎就和抗锯齿的功能相似，但却是在三维意义上的抗锯齿。将CG元素添加到实时操作以删除任何硬边时，请使用此节点设置。在更大范围内对此效果进行动画处理，将使该物体看起来像是“逐步”移入和移出，就像“异相”时间旅行同步效果一样。