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James Gregory 2013-12-30 15:11:04 +11:00
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<meta name="vspubdate" content="07/01/97" />
<meta name="vscategory" content="Web and Software Development: Game Development,Web and Software Development: Graphics and Multimedia Development" />
<title>Michael Abrash's Graphics Programming Black Book Special Edition: There Ain't No Such Thing as the Fastest Code</title><!-- HEADER -->
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<title>Michael Abrash's Graphics Programming Black Book Special Edition: There Ain't No Such Thing as the Fastest Code</title>
<meta name="chapter" content="16" />
<meta name="pages" content="311-313" />
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<p><br /></p>
<h3><a id="Heading9"></a>Levels of Optimization</h3>
<h3 id="Heading9">Levels of Optimization</h3>
<p>Three levels of optimization were evident in the word-counting entries I received in response to my challenge. I&rsquo;d briefly describe them as &ldquo;fine-tuning,&rdquo; &ldquo;new perspective,&rdquo; and &ldquo;table-driven state machine.&rdquo; The latter categories produce faster code, but, by the same token, they are harder to design, harder to implement, and more difficult to understand, so they&rsquo;re suitable for only the most demanding applications. (Heck, I don&rsquo;t even guarantee that David Stafford&rsquo;s entry works perfectly, although, knowing him, it probably does; the more complex and cryptic the code, the greater the chance for obscure bugs.)</p>
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<h4 align="left"><a id="Heading10"></a>Optimization Level 1: Good Code</h4>
<h4 align="left" id="Heading10">Optimization Level 1: Good Code</h4>
<p>The first level of optimization involves fine-tuning and clever use of the instruction set. The basic framework is still the same as my code (which in turn is basically the same as that of the original C code), but that framework is implemented more efficiently.</p>
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<div align="center">
Graphics Programming Black Book &copy; 2001 Michael Abrash
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