ABRASH BLACK BOOK PDF

January 3, 2020   |   by admin

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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I still remember the video 7 story at the beginning of one of the chapters. Technically, it might be more accurate to place this cycle-eater in the Bus Interface Unit, which breaks bit memory accesses into paired 8-bit accesses, but it is really the limited width of the external data bus that constricts data flow into and out of the How slow is it? In other words, the program will add each byte in a specified file in turn into a bit value.

The task of the subroutine was to construct a nibble out of four bits read from different bytes, rotating and combining the bits so that they ultimately ended up neatly aligned in bits of a single byte. With a merely adequate translation, you risk laboring mightily for little or no reward. Mind you, this is all transparent to executing code.

The second reason is the blacm of the mediocre programmer. Four college students, living in typical student housing, are frozen to the bone. The closest match to what we need is strstrwhich searches one string for the first occurrence of a second string. The Best Optimizer is between Your Ears 4. It might also be worth converting the search engine to assembly for searches performed entirely in memory; with the overhead of file access eliminated, improvements in search-engine performance would translate directly into significantly faster overall performance.

Current gaming and 3-D technology, such as Direct3D and VRML is left out, but it’s clear that game programmers like the author abras continue to push the limits of current hardware technology in inventive ways.

Exactly why boo, this happen? If, for example, your application will typically search buffers in which the first character of the search string occurs frequently as might be the case when searching a text buffer for a string abrzsh with the space character an assembly implementation might be several times faster.

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Michael Abrash’s Graphics Programming Black Book, Special Edition

Our last move was the usual zoo—and then some. The Zen timer subroutines can, however, be called from any assembly or high-level language code that generates OBJ files that are compatible with the Microsoft linker, simply by modifying the segment that the gook code runs in to match the segment used by the code being timed, or by changing the Zen timer routines to far procedures and making far calls to the Zen timer code from the code being timed, as discussed at the end of this chapter.

Navigating Complex Waters SaaS Amazon Related Book Categories: This chapter is a long-time favorite of mine because it was bok first—and to a large extent only—work that I know of that discussed this material, thereby introducing a generation of PC programmers abrahs pedal-to-the-metal optimization.

For one thing, the rule should be 4 cycles times the number of memory accesses, not instruction bytes, since all accesses take 4 cycles on the abeash PC. His results are as follows: This link now redirects to Amazon for some reason. To drive home the point, Listings 1. However, using the registers is a rule of thumb, not a commandment.

The PS2 equate selects between the two modes of operation. Max rated it it was amazing Jul 14, Time for Process Maturation SaaS Eventually someone acknowledges the obvious and allows that it might have been abrasb stupid idea after all, and everyone agrees, and they shut off the heater and leave, each no doubt offering silent abrasb that they had gotten out of this without any incidents requiring major surgery. The Great Buffalo Sauna Fiasco also suffered from fundamental design flaws.

Remember the Kobiyashi Maru problem in Star Trek? Adding a Dimension 1.

Graphics Programming Black Book Special Edition

Also, later chapters often refer back to the basic cycle-eaters described in this chapter, so this chapter is the foundation for the discussions of xfamily optimization to come. What have we learned? Michael Abrash’s classic Graphics Programming Black Blqck is a compilation of Michael’s previous writings on assembly language and graphics programming including from his “Graphics Programming” column in Dr. Just a moment while we sign you in to your Goodreads account.

Michael Abrash’s Graphics Programming Black Book, Special Edition

Once again, we were able to improve performance considerably—not by knowing the fastest instructions, but by selecting the fastest sequence of instructions. This area is the domain of hardware engineers, and is almost never discussed as it relates to code performance.

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That means that Listing 1. Due to the nature of these files, we were unable to remove the link.

I particularly like chapters V and VI. What a brilliant hack. As a result, code that accesses display memory less intensively than the code in Listing 4. How are we going to generate a checksum value for a specified file?

You should experiment freely, but always remember that actual, measured performance is the bottom line. While the code may not look much different from the original, and in fact still contains exactly the same number of instructions, the performance of the entire subroutine improved by about 10 percent from just this one change. East Dane Designer Men’s Fashion. Besides illustrating the advantages of local optimization, this example also shows that it generally pays to precalculate results; this is often done at or before assembly time, but precalculated tables can also be built at run time.

Michael Abrash’s Graphics Programming Black Book Special Edition: Table of Contents

There are two separate cases to be dealt with here: Likewise, proper algorithm selection and good design are wbrash to performance. Then download any chapters you want.

The important point is that the time during which the execution of one instruction and the fetching of the next instruction overlap should only be counted toward the overall execution time of one of the instructions. What does that give us?

On the other hand, Super VGAs have more bytes of display memory to be accessed in high-resolution mode. Yes, SHL shifts a pattern left—but a look-up table can do the same thing, and can often do it faster. For intensive access to display memory, the loss really can be as high as 8cycles and up to 50,or even more on s and Pentiums paired with slow VGAswhile for average b,ack code the loss is closer to 4 cycles; in either case, the impact on performance is significant.