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ABRASH BLACK BOOK PDF

Michael Abrash’s Graphics Programming Black Book (Special Edition) [Michael Abrash] on *FREE* shipping on qualifying offers. No one has done . Graphics Programming Black Book Special Edition has 65 ratings and 3 reviews. — Includes everything that master Abrash has ever written about optimizati. Michael Abrash’s classic Graphics Programming Black Book is a compilation of Michael’s writings on assembly language and graphics.

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In short, he had used all the information at his disposal to improve his code, and had, as a result, saved cycles by the bushel. Who on Nov 2, You could add the two registers together to address memory, like this:. In order to explain why that is arash and how it relates to the 8-bit bus cycle-eater, I must diverge for a moment.

For example, suppose you have an array base address in BX and an index into the array in SI. If you look at Doom, there wasn’t a lot of abrasg even back in the early ‘s. It will never be outdated thanks to all the happy memories it holds for me. It wasn’t, however, fast enough for me.

Master 1 is the circuitry that drives the display screen. Knowledge and wisdom for the aspiring developer. Shopbop Designer Fashion Brands. Chris rated it it was amazing Apr 06, AT-compatible systems have bit data buses, which can access a full bit word at a time. While short instructions minimize overall prefetch time, ironically they actually often suffer more from the prefetch queue bottleneck than do long instructions.

That means that as much as 5.

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Graphics Programming Black Book Special Edition

We could make this check by using a pointer in a loop to scan the buffer for the next match for the first character, stopping to check for a match with the rest of the string only when the first character matches, blok shown in Figure 5. Amazon Inspire Digital Educational Resources. I was in territory that I new almost nothing about, so I read everything that I could get my hands on.

Note that the command can take as much as 10 back to finish on a slow PC if you are using MASM, with most of that time spent assembling Listing 3. These changes convert the code to use C-style external label names and the small model C code segment.

Michael Abrash’s Graphics Programming Black Book | Hacker News

Modern processors are much more complex than they were in ye olden days, although superscalar processors as they existed back in the olden times are covered. Boyer-Moore String Searching 2.

The assembly language implementation is indeed faster than any of the C versions, as shown in Table 1.

The trick, then, is not to find the fastest way to decrement a count and branch conditionally, but rather to figure out how to accomplish the same result without decrementing or branching as often.

Fast Convex Polygons 4. Divide-by-N mode counts down by one from the initial count. The obvious solution is this:. Consider the ratios on the vertical axis of Table 1. If ADD were used, the Carry flag would have to be saved between additions, with code along the lines shown in Listing 7.

Interesting, yes; essential, no. This gives us another reason to reboot at the end of each code-timing session. Byte-by-byte processing is easy to program but can be extremely slow, due to the vast overhead that results from invoking DOS each time a byte must be processed.

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The proper test would, of course, have been to run the code to see if snow resulted, since the only true measure of code performance is observing it in action. And it is that intuitive, on-the-fly integration of a program specification and a sea of facts about the PC that is the heart of the Zen-class assembly optimization.

In Chapter 1, I briefly discussed using restartable blocks. Much heroic programming ensued. Dobb’s further reserves the right to disable the profile of any commenter participating in said activities.

How are we going to generate a checksum value for a specified file? Redefine the problem to one that offers better solutions. In some circumstances, it may actually be faster to access memory. Here’s the original DDJ link: You are, of course, entitled to your own opinion, but I consider an order of magnitude to be significant. Each program you create will expand your programming horizons and increase the options available to you in meeting the next challenge.

Compiling BSP Trees 0. Note that in Table 1. To be precise, the counts once every Read reviews that mention graphics programming high performance code optimization computer graphics michael abrash everything i need fast code book covers book is amazing know on how to code book is a great programmer assembly chapters learn optimizing pentium quake software vga.