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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On faster processors, however, display memory is so slow that it often pays to do several instructions worth of work between display memory accesses, to take advantage of cycles that would otherwise be wasted on the wait states. Assemblers perform no transformation from source code to machine language; instead, they merely map assembler instructions to machine language instructions on a one-to-one basis. Personally, I’d like to do some iOS stuff, and perhaps keep the same code running on Android.
The code in Listing 4. WPbytes in sizeas compiled in the small model with Borland and Microsoft compilers with optimization on opt and off no opt. And yet it is only by understanding the mechanisms operating at this level that we can fully understand and properly improve the performance of our code. To produce the best code, you must decide precisely what you need to accomplish, then put together the sequence of instructions that accomplishes that end most efficiently, regardless of what the instructions are usually used for.
Some people operate under a rule of thumb by which they assume that the execution time of each instruction is 4 cycles times the number of bytes in the instruction. The truth of the matter is that the is a bit processor that often performs like an 8-bit processor.
Michael Abrash’s Graphics Programming Black Book Special Edition: Table of Contents
Most of Zen of Graphics Programming, 2nd Edition is in there and the rest is on the CD ; all of Zen of Code Optimization is there too, and even my book Zen of Assembly Languagewith its long-dated cycle counts but a lot of useful perspectives, is on the CD. Back then this was a goldmine of tricks. As a result, timer interrupts are recognized by the PC, allowing the BIOS to maintain an accurate system clock time over the timing period.
Finally, up wbrash With that in mind, what should the first step be? Invoking memcmp for each potential match location works, but entails considerable overhead. Blaxk rated it really liked it Oct 14, Both the presence of wait states and the number of wait states inserted on any given bus access are entirely controlled by the device being accessed. Nonetheless, the display adapter cycle-eater always takes its toll on graphics code.
Since interrupts must be left on in order to time periods longer than 54 ms, the interrupts generated by keystrokes including the upstroke of the Enter key press that starts the program —or any other interrupts, for that matter—could incorrectly inflate the time recorded by the long-period Zen timer. I think you should read the first chapter at least, on how he approaches code optimization, first by design and then by code.
I still remember the video 7 story at the beginning of one of the chapters.
While that topic covers a lot of ground—display adapters, keyboards, serial ports, printer ports, timer and DMA channels, memory organization, and more—most of the hardware is well-documented, and articles about programming major hardware components appear frequently in the literature, so this sort of knowledge can be acquired readily enough. Then I’d advice either reading a general rendering book or some GPU docs depending on your finding the book too easy or too hard.
They must be constructed and destroyed, which takes both time and code.
C compilers are not terrific at handling segments. In addition, code that accesses display memory infrequently tends to suffer only about half of the maximum display memory wait states, because on average such code will access display memory halfway between one available display memory access slot boo the next.
Optimization makes code faster, but without proper design, optimization just creates fast slow code. String instructions can suffer from the 8-bit bus cycle-eater to a greater extent than other instructions. Give it a shot! If the prefetch queue is empty at the start, the sequence could take 40 cycles. As a result, the has an effective transfer rate for word-sized memory accesses of just 1 word every 1.
Open Preview See a Problem? I looked in every bookstore I visited, but I never did find it. As I was writing my last game, I discovered that the program ran perceptibly faster if I used look-up tables instead of shifts and adds for my calculations.
There Ain’t No Such Thing as the Fastest Code
John Carmack, id Software. The key, of course, is the programmer, since in assembly the programmer must essentially perform the transformation from the application specification to machine language entirely on his or her own.
The first point to address in designing our program involves the appropriate text-search approach to use. A good rough cut is a buffer that will be between 16K and 64K, depending on the exact search approach, 64K being the maximum size because near pointers make for superior performance. Redefine the problem to one that offers better solutions.
I’ve found it rare to find both in the same person. I got my start programming on Apple II computers at school, and almost all of my early work was on the Apple platform. Remember that the arash four instruction bytes at a pop. Alexa Actionable Analytics for the Web. Hints My Readers Gave Me 2. Linked Lists and Unintended Challenges 2. If you like books and love to build cool products, we may be looking for you.