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What (who) is scanline - definition
Scanline rendering
RENDERING METHOD
Scan line rendering; Scanline algorithm; S-buffering; S-buffer; S buffer; S buffering; Scan-line rendering; Scan-line renderer; Scan-line algorithm
Scanline rendering (also scan line rendering and scan-line rendering) is an algorithm for visible surface determination, in 3D computer graphics, that works on a row-by-row basis rather than a polygon-by-polygon or pixel-by-pixel basis. All of the polygons to be rendered are first sorted by the top y coordinate at which they first appear, then each row or scan line of the image is computed using the intersection of a scanline with the polygons on the front of the sorted list, while the sorted list is updated to discard no-longer-visible polygons as the active scan line is advanced down the picture.
Scan line
![front porch]], sync pulse, back porch with color burst, video portion of the next scan line. The signals from multiple lines are overlaid, showing shaded areas instead of a single curve](https://commons.wikimedia.org/wiki/Special:FilePath/Videosignal scanline.jpg?width=200 "front porch]], sync pulse, back porch with color burst, video portion of the next scan line. The signals from multiple lines are overlaid, showing shaded areas instead of a single curve")
SINGLE HORIZONTAL LINE WITHIN A RASTER (PARTICULARLY CRT) IMAGE
Scanline; Scanlines; Scan line effect; Scan Line Effect; Scan-Line Effect; Scan-line Effect; Scan-line effect; Scanline effect; Scanline Effect; Scan-lines; Scan lines; Scan-line; Scan-Lines; Scan-Line; Scan Line; Scan Lines; Scanning line; ⎺; ⎻; ⎼; ⎽
A scan line (also scanline) is one line, or row, in a raster scanning pattern, such as a line of video on a cathode ray tube (CRT) display of a television set or computer monitor.
scan line
SINGLE HORIZONTAL LINE WITHIN A RASTER (PARTICULARLY CRT) IMAGE
Scanline; Scanlines; Scan line effect; Scan Line Effect; Scan-Line Effect; Scan-line Effect; Scan-line effect; Scanline effect; Scanline Effect; Scan-lines; Scan lines; Scan-line; Scan-Lines; Scan-Line; Scan Line; Scan Lines; Scanning line; ⎺; ⎻; ⎼; ⎽
<hardware> A horizontal line of pixels generated by a single
horizontal sweep of the beam from a monitor's {electron
gun}. The number of scanlines that make up a frame is the
vertical resolution.
(1996-02-09)
