Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
The <filter> element contains a series of filter primitives, each of which takes one or more inputs and provides a single result for use with other filters. The result of the last filter in the series is rendered into the final graphic. You specify the dimensions of the canvas to which the filter applies with the x, y, width, and height attributes.
Table 10-1 presents a filter reference summary. Each of the filter primitive elements has an in attribute that gives the source for the primitive, and may also specify an x, y, width, and height. Default attributes are in boldface.