CSS Masking Module Level 1.Abstract. CSS Masking provides two means for partially or fully hiding portions of visual elements masking and clipping.Masking describes how to use another graphical element or image as a luminance or alpha mask.Typically, rendering an element via CSS or SVG can conceptually described as if the element, including its children, are drawn into a buffer and then that buffer is composited into the elements parent.Luminance and alpha masks influence the transparency of this buffer before the compositing stage.Clipping describes the visible region of visual elements.The region can be described by using certain SVG graphics elements or basic shapes.Anything outside of this region is not rendered.CSS is a language for describing the rendering of structured documents.HTML and XML. on screen, on paper, in speech, etc.Status of this document.Table of Contents.Introduction. This section is not normative.This specification defines two different graphical operations which both fully or partly hide portions of an object clipping and masking.Clipping. A closed vector path, shape or polygon defines a so called clipping path.This clipping path is a region in the absence of anti aliasing where everything on the inside of this region is allowed to show through but everything on the outside is clipped out and does not appear on the canvas.Download Adobe Protected Content Module Definition And Sentence
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