<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>CodeItNow &#187; Global Illumination</title>
	<atom:link href="http://www.rorydriscoll.com/category/graphics/global-illumination/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.rorydriscoll.com</link>
	<description></description>
	<lastBuildDate>Sun, 31 Jan 2010 20:38:25 +0000</lastBuildDate>
	<language>en</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.0</generator>
		<item>
		<title>What&#8217;s wrong with this picture?</title>
		<link>http://www.rorydriscoll.com/2010/01/30/whats-wrong-with-this-picture/</link>
		<comments>http://www.rorydriscoll.com/2010/01/30/whats-wrong-with-this-picture/#comments</comments>
		<pubDate>Sun, 31 Jan 2010 00:31:58 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=393</guid>
		<description><![CDATA[Well, you could point out a number of things to answer that question. There&#8217;s some pretty obvious aliasing, a random pixel on the ground which should be in shadow but isn&#8217;t, it&#8217;s noisy, boring etc. But that&#8217;s not my point. The point is: It&#8217;s too dark! I know it&#8217;s too dark because I know how [...]]]></description>
		<wfw:commentRss>http://www.rorydriscoll.com/2010/01/30/whats-wrong-with-this-picture/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Irradiance Caching: Part 2</title>
		<link>http://www.rorydriscoll.com/2009/01/24/irradiance-caching-part-2/</link>
		<comments>http://www.rorydriscoll.com/2009/01/24/irradiance-caching-part-2/#comments</comments>
		<pubDate>Sat, 24 Jan 2009 22:45:17 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>
		<category><![CDATA[Irradiance Caching]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=200</guid>
		<description><![CDATA[In my previous post, I wrote very briefly about an  important improvement to the irradiance caching algorithm &#8211; irradiance gradients &#8211; and I&#8217;m going to expand on rotational gradients this time. Gradients The gradient of a function represents both the direction and rate of change of that function as the inputs vary. For a one [...]]]></description>
		<wfw:commentRss>http://www.rorydriscoll.com/2009/01/24/irradiance-caching-part-2/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Irradiance Caching: Part 1</title>
		<link>http://www.rorydriscoll.com/2009/01/18/irradiance-caching-part-1/</link>
		<comments>http://www.rorydriscoll.com/2009/01/18/irradiance-caching-part-1/#comments</comments>
		<pubDate>Mon, 19 Jan 2009 01:35:35 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[C++]]></category>
		<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>
		<category><![CDATA[Irradiance Caching]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=166</guid>
		<description><![CDATA[Solving the rendering equation with even just one bounce of indirect lighting can take a long time. The majority of time spent rendering a frame is in estimating the lighting integral. For example, rendering a single bounce of indirect lighting at 720p resolution with 256 sample rays for a Monte Carlo estimator requires about 237 [...]]]></description>
		<wfw:commentRss>http://www.rorydriscoll.com/2009/01/18/irradiance-caching-part-1/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Better Sampling</title>
		<link>http://www.rorydriscoll.com/2009/01/07/better-sampling/</link>
		<comments>http://www.rorydriscoll.com/2009/01/07/better-sampling/#comments</comments>
		<pubDate>Thu, 08 Jan 2009 07:33:51 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[C++]]></category>
		<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=77</guid>
		<description><![CDATA[A couple of days ago, I compared the images my ambient occlusion integrator produced with those of Modo using similar settings. I noticed immediately how much &#8216;cleaner&#8217; the render from Modo was. Clearly there was an issue with the way I was picking my samples, so I set about improving things. My approach for generating [...]]]></description>
		<wfw:commentRss>http://www.rorydriscoll.com/2009/01/07/better-sampling/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>The Holidays: Time for fun work!</title>
		<link>http://www.rorydriscoll.com/2009/01/03/the-holidays-time-for-fun-work/</link>
		<comments>http://www.rorydriscoll.com/2009/01/03/the-holidays-time-for-fun-work/#comments</comments>
		<pubDate>Sun, 04 Jan 2009 01:48:52 +0000</pubDate>
		<dc:creator>rory</dc:creator>
				<category><![CDATA[C++]]></category>
		<category><![CDATA[Global Illumination]]></category>
		<category><![CDATA[Graphics]]></category>

		<guid isPermaLink="false">http://www.rorydriscoll.com/?p=70</guid>
		<description><![CDATA[For the first time in about three years, I&#8217;ve had two weeks off work. I&#8217;ve spent a lot of time just relaxing and taking a break from things, but I&#8217;ve also been able to get back to doing some graphics work. Ever since Vivendi bought Activision, the project that I was leading has been &#8220;put [...]]]></description>
		<wfw:commentRss>http://www.rorydriscoll.com/2009/01/03/the-holidays-time-for-fun-work/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
	</channel>
</rss>
