In PixaFlux the node graph is the main system to create and edit images. The node graph can be seen as an assembly line, where each node acts as a workstation that creates or modifies images.
The Checker node generates an image.
Connecting the Checker node to a Gaussian Blur node filters the image.
Changing the number of tiles in the Checker node updates the image.
The Blend node blends images.
Easy to visualize.
There are no limits of size or color mode in the streams to be blend.