Simulating Light - Inside Rendering Technology


	Simulating Light - Inside Rendering Technology
BartendingBear
7-16-2009 11:19 PM
181 views
BartendingBear says:
3D rendering produces fabulous images. Here's a nice explanation of how the various forms work.
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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/91a3ad2e-10ed-4620-bb5c-3537db2c75c9/ECF5692B-027D-4C94-B16F-7023C06936F2/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://computersight.com/software/simulating-light-inside-rendering-technology/" href="http://computersight.com/software/simulating-light-inside-rendering-technology/" style="font-size: 11px;">computersight.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/">As technology advances, games and CGI movies become more and more realistic. What is the math behind those graphics? This article looks into popular rendering techniques such as rasterization, ray tracing, and path tracing.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/">The basic goal of 3D rendering is to produce a realistic 2-dimensional image of an illuminated 3D scene. There are many techniques that can solve that problem partially or completely. They are used in real-time games, movies, and some of the most powerful ones are still restricted to still images. Here are some of those techniques.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/">1. <A target="_blank" href="http://en.wikipedia.org/wiki/Rasterisation" linkindex="16">Rasterization</A></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><STRONG>Time to render a frame: </STRONG>milliseconds</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/computersight.com/img/1528A633-6C46-4EE8-9B76-D3997C9FAF12" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><STRONG>2. <A target="_blank" href="http://en.wikipedia.org/wiki/Ray_tracing_%28graphics%29" linkindex="17">Ray Tracing</A></STRONG></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>Time to render a frame: </STRONG>minutes</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/computersight.com/img/9A0FB709-A6DE-4397-8771-E2551FBD36C4" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>2.5. <A target="_blank" href="http://en.wikipedia.org/wiki/Photon_mapping" linkindex="18">Photon Mapping</A></STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>Time to render a frame: </STRONG>minutes to hours</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>3. <A target="_blank" href="http://en.wikipedia.org/wiki/Path_tracing" linkindex="19">Path Tracing</A></STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>Time to render a frame:</STRONG> hours to days</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/computersight.com/img/E5710B8D-81BC-498D-B7ED-03D278A31A58" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>4. <A target="_blank" href="http://en.wikipedia.org/wiki/Photon_tracing" linkindex="22">Photon Tracing</A></STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://computersight.com/software/simulating-light-inside-rendering-technology/"><P><STRONG>Time to render a frame: </STRONG>days to months</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/ECF5692B-027D-4C94-B16F-7023C06936F2/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
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