decade about graphics and performance programming that’s still relevant to Code Optimization is there too, and even my book Zen of Assembly. 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.

Author: Akinojas Shalabar
Country: Australia
Language: English (Spanish)
Genre: Video
Published (Last): 10 March 2008
Pages: 280
PDF File Size: 18.57 Mb
ePub File Size: 7.85 Mb
ISBN: 922-3-23477-196-4
Downloads: 18574
Price: Free* [*Free Regsitration Required]
Uploader: Gardarr

Graphics Programming Black Book

Here’s the original DDJ link: First, consider the series of MUL instructions in Listing 4. Each bus access by the takes 4 clock cycles, or 0. The gist of all this is simply that good assembly programming is done in the context of a solid overall framework unique to each program, and the flexible mind is the key to creating that framework and holding it together. In the early s, as the first hand-held calculators were hitting the market, I knew a fellow named Irwin.

The strstr function must spend time either checking for the end of the string being searched or determining the length of that string—wasted effort given that we already know exactly how long our search buffer is. Second, that the relative merits of instructions and optimization rules vary to a surprisingly large degree across progrzmming x86 family.

Invoking memcmp for each potential match location works, but entails considerable overhead. Each DRAM chip in programminb PC must be completely refreshed about once every four milliseconds in order to ensure the integrity of the data it stores.


Since MUL instructions take so long to execute that the prefetch queue is always full when they finish, each SHR should be ready and waiting in the prefetch queue when the preceding MUL ends. The only way to avoid this problem is to stop timer 0, read both the timer and time-of-day blzck while the timer is stopped, and then restart the timer.

Good assembly code is better than good compiled code. An assembler is nothing more than a tool to let you design machine-language programs without having to think in hexadecimal codes. Similarly, braphics debuggers can be run from a remote terminal via a serial link.

If a measured period turns out programmjng be longer than 54 ms that is, if timer 0 has counted down and turned overthe Zen timer will display a message to that effect. Kris rated it it was amazing Feb 14, All the memory in the PCjr was display memory. It’s a Wonderful Life 4. The last section contained a particularly interesting phrase: Please be aware that the inaccuracy that the Zen timer can introduce into the system clock time does not affect the accuracy of the performance measurements reported by the Zen timer itself.

Otherwise, we may read the timer count just before it turns over and generates an interrupt, then read the BIOS time-of-day count just after the interrupt has occurred and caused the time-of-day count to turn over, with a resulting 54 ms measurement inaccuracy.

After all, the whole point of drawing graphics is to convey visual information, and if that information can blacj presented faster than the eye can see, that is by definition fast enough.

Graphics Programming Black Book Special Edition by Michael Abrash

At any rate, Listing 1. Note that the command can take as much as 10 minutes to finish on a slow PC if you are using MASM, with most of that time spent assembling Listing 3.


For example, consider the SHR of Listing 4. Bones and Sinew 5. Besides, multiplying by 2, 4, or 8 amounts to a left shift of 1, 2, or 3 bits, so we can now add up to two bit registers and a constant, and shift or multiply one of the registers to some extent—all with a single instruction. This is merely one aspect of a fundamental optimization rule: One important safety tip when modifying the Zen timer for use with large code model C code: Still, something bothered me, so I spent a bit of time going over the code again.

Use it sparingly and only within the framework of a good design—but ignore it and you may find various portions of your anatomy out in the cold. In other words, the display adapter cycle-eater can more than double the execution time of code!

Back to the 8-bit bus cycle-eater. The point to all this: We suggest downloading them first right-click on the link. Surprisingly, the timer count remains readable and correct while the timer is waiting for the initial load.

The files are large, so we don’t recommend reading them online. Single tags These tags can be used alone and don’t need an ending tag.