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Rocketwidget (talk | contribs) This article did not make clear that HDRR was originally (and still usually) tone-mapping the resulting render onto a SDR display. Made a pass at discussing HDR displays in the relevant sections, reducing or eliminating the need for tone mapping, and resulting in a more realistic image than original HDRR. |
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{{Short description|Rendering of computer graphics scenes by using lighting calculations done in high-dynamic-range}}
[[File:Lost Coast HDR comparison.png|thumb|300px|right|A comparison of the standard fixed-aperture rendering (left) with the HDR rendering (right) in the video game ''[[Half-Life 2: Lost Coast]].'' The HDRR was tone mapped to SDR for broad compatibility with almost all displays.]]
'''High-dynamic-range rendering''' ('''HDRR''' or '''HDR rendering'''), also known as '''high-dynamic-range lighting''', is the [[Rendering (computer graphics)|rendering]] of [[computer graphics]] scenes by using [[computer graphics lighting|lighting]] calculations done in [[high dynamic range]] (HDR). This allows preservation of details that may be lost due to limiting [[contrast ratio]]s. [[Video game]]s and [[Computer animation|computer-generated movies and special effects]] benefit from this as it creates more realistic scenes than with more simplistic lighting models. HDRR was originally required to [[Tone mapping|tone map]] the rendered image onto [[Standard-dynamic-range video|Standard Dynamic Range]] (SDR) displays, as the first [[High-dynamic-range television#Displays|HDR capable displays]] did not arrive until the 2010s. However if a modern HDR display is available, it is possible to instead display the HDRR with even greater contrast and realism.
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===Output to displays===
Although many manufacturers claim very high numbers, [[plasma displays]], [[liquid-crystal display]]s, and [[
Some increase in dynamic range in LCD monitors can be achieved by automatically reducing the backlight for dark scenes. For example, LG calls this technology "Digital Fine Contrast";<ref>[http://www.lge.com/about/press_release/detail/PRO%7CNEWS%5EPRE%7CMENU_20075_PRE%7CMENU.jhtml Digital Fine Contrast]</ref> Samsung describes it as "dynamic contrast ratio". Another technique is to have an array of brighter and darker LED backlights, for example with systems developed by BrightSide Technologies.<ref>[http://www.dolby.com/promo/hdr/technology.html BrightSide Technologies is now part of Dolby -] {{webarchive|url=https://web.archive.org/web/20070910145331/http://www.dolby.com/promo/hdr/technology.html |date=2007-09-10 }}</ref>
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