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	<title>Real-Time Rendering &#187; illusions</title>
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	<description>Tracking the latest developments in interactive rendering techniques</description>
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		<title>Odds and Ends</title>
		<link>http://www.realtimerendering.com/blog/odds-and-ends/</link>
		<comments>http://www.realtimerendering.com/blog/odds-and-ends/#comments</comments>
		<pubDate>Fri, 08 May 2009 01:32:03 +0000</pubDate>
		<dc:creator>Eric</dc:creator>
				<category><![CDATA[Resources]]></category>
		<category><![CDATA[benchmarking]]></category>
		<category><![CDATA[books]]></category>
		<category><![CDATA[demo scene]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[illusions]]></category>
		<category><![CDATA[libraries]]></category>
		<category><![CDATA[O3D]]></category>

		<guid isPermaLink="false">http://www.realtimerendering.com/blog/?p=97</guid>
		<description><![CDATA[It&#8217;s 5/7/09, a nice odd sequence, so time for a few odds and ends I&#8217;ve collected. OK, this is worth a few minutes of your life: the elevated demo is awe-inspiring. Terrain generation (be patient when you start it), fly-by&#8217;s, and music, all in less than 4096 bytes. By way of comparison, an empty MS [...]]]></description>
			<content:encoded><![CDATA[<p>It&#8217;s 5/7/09, a nice odd sequence, so time for a few odds and ends I&#8217;ve collected.</p>
<p>OK, this is worth a few minutes of your life: the <a href="http://pouet.net/prod.php?which=52938">elevated</a> demo is awe-inspiring. Terrain generation (be patient when you start it), fly-by&#8217;s, and music, all in less than 4096 bytes. By way of comparison, an empty MS Word document is 9834 bytes. <em>(thanks to Steve Worley)</em></p>
<p>Google has put out a browser-based low-level 3D graphics API called <a href="http://o3d.blogspot.com/2009/04/toward-open-web-standard-for-3d.html">O3D</a>. API <a href="http://code.google.com/apis/o3d/">here</a>. Demos <a href="http://code.google.com/apis/o3d/docs/samplesdirectory.html">here</a>. Some initial impressions <a href="http://www.geeks3d.com/?p=3917">here</a>. It will be interesting to see if they succeed where so many others have failed.</p>
<p>There is a call for participation out for a new book series called &#8220;<a href="http://gameenginegems.com/">Game Engine Gems</a>&#8220;, edited by Eric Lengyel. <em>(thanks to Marwan Ansari)</em></p>
<p>The main thing I look at on the SIGGRAPH exhibition floor are the book booths. Good books are such a ridiculous bargain: if a book like <a href="http://www.amazon.com/exec/obidos/tg/detail/-/1558605940?tag=realtimerenderin"><strong>Geometric Tools</strong></a> saves a programmer 2 hours of time, it&#8217;s paid for itself. One new book that I want to see is <a href="http://www.amazon.com/Real-Time-Cameras-Kaufmann-Interactive-Technology/dp/0123116341?tag=realtimerenderin"><strong>Real-Time Cameras</strong></a>, by Mark Haigh-Hutchinson, which came out this April. Looking around for more info, I noticed <a href="http://realtimecameras.com/">this sad note</a>. I never met Mark, but we corresponded a few times. He came up with a clever idea to avoid performing division when doing a point in polygon test; I folded this into the CrossingsMultiplyTest Graphics Gems code <a href="http://tog.acm.org/GraphicsGems/gemsiv/ptpoly_haines/ptinpoly.c">here</a>, crediting him.</p>
<p>I&#8217;ve been looking at GPU capabilities and benchmarking information lately. Some nice resources:</p>
<ul>
<li>You probably know about the benchmarking group <a href="http://www.futuremark.com/">Futuremark</a>. Me, I hadn&#8217;t realized they had useful stats at their site: see the Futuremark ORB links at the bottom of the page and start clicking.</li>
<li>Two applications that tell you a ton about your card&#8217;s capabilities: <a href="http://www.techpowerup.com/gpuz/">GPU-Z</a>, with a ton of information and a <a href="http://www.techpowerup.com/gpuz/stats.php">statistics page</a> &amp; cute <a href="http://www.techpowerup.com/gpuz/world_large.jpg">map of downloads</a> at their site, and <a href="http://www.geeks3d.com/?p=3786">GPU Caps</a>, which also includes CUDA-related information and some nice little OpenGL benchmarks.</li>
<li>Chris Dragan has <a href="http://zp.amsnet.pl/cdragan/wizard.php">a web database</a> that provides a fair amount of data on card support for DirectX capabilities and OpenGL extensions.</li>
<li>The <a href="http://www.notebookcheck.net/Comparison-of-Graphic-Cards.130.0.html">Notebook Check site</a> had way too much information about many laptop graphics accelerators.</li>
<li><a href="http://www.geeks3d.com/?p=3970">nHancer</a> is a utility for NVIDIA cards. It lets you get at all sorts of different capabilities on your GPU, on a per-game basis. There are also interesting <a href="http://www.nhancer.com/help/AASamples.htm">antialiasing</a> and <a href="http://www.nhancer.com/help/AFSamples.htm">anisotropic filtering</a> comparison pages (click on the radio buttons). <em>(thanks to Mauricio Vives)</em></li>
</ul>
<div>Some interesting libraries I ran across lately:</div>
<div>
<ul>
<li><a href="http://gts.sourceforge.net/">GTS</a> is an open-source mesh manipulation package.</li>
<li><a href="http://www.box2d.org/">Box2D</a> is a 2D physics engine.</li>
<li><a href="http://www.nuigroup.com/touchlib/">Touchlib</a> is a multitouch development kit. <em>(thanks to Morgan McGuire)</em></li>
</ul>
</div>
<p>Coincidental world: it turns out there&#8217;s a different &#8220;Eric Haines&#8221; out there that made a well-received 3D graphics game for the iPhone, <strong><a href="http://toucharcade.com/2009/04/02/upcoming-realmaze-3d-is-a-real-3d-maze-game/"><span style="font-weight: normal;">Realmaze 3D</span></a><span style="font-weight: normal;">. I&#8217;m not sure how it compares to his <a href="http://starscenesoftware.com/tmfppg.html">The Magical Flying Pink Pony Game</a>, which looks awesome. <em>(thanks to Nikolai Sander)</em></span></strong></p>
<p>I&#8217;ve seen similar real-world illusions, but still thought <a href="http://www.dailymail.co.uk/news/article-1176328/Artists-turns-old-Skoda-Fabia-invisible-car.html">this one</a> was pretty great. (Addendum: Morgan McGuire found this <a href="http://news.bbc.co.uk/2/hi/uk_news/england/lancashire/8030766.stm">even-better video</a> of the effect.)</p>
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