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  What is blit?  (Read 2523 times)
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Offline Jeffrey_Chee

Senior Newbie




Java games rock!


« Posted 2003-01-02 12:46:54 »

Please pardon my ignorance as I just picked up computer graphics  Smiley.

What is blit as many of the posts here are often about blitzing of images/background etc  Huh?

Is there anywhere where I can get some help/tutorial on graphic theories/methods that "accelerate" drawing onto the screen?

Thanks in advance
~Jeffrey

Offline EgonOlsen
« Reply #1 - Posted 2003-01-02 13:20:47 »

http://www.tuxedo.org/~esr/jargon/html/entry/blit.html

Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #2 - Posted 2003-01-13 03:07:09 »

BLock Image Transfer

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Offline Silicon_Munky

Senior Newbie




Java games rock!


« Reply #3 - Posted 2003-01-13 03:38:47 »

didn't you read the link?!? It's not BLock Image Transfer, it's

Bacon, Lettuce, and Interactive Tomato
Offline cfmdobbie

Senior Member


Medals: 1


Who, me?


« Reply #4 - Posted 2003-01-13 11:01:52 »

No, that's meaning two: Tongue

Quote
2. [historical, rare] Sometimes all-capitalized as `BLIT': an early experimental bit-mapped terminal designed by Rob Pike at Bell Labs, later commercialized as the AT&T 5620. (The folk etymology from `Bell Labs Intelligent Terminal' is incorrect. Its creators liked to claim that "Blit" stood for the Bacon, Lettuce, and Interactive Tomato.)


I do like the Jargon File - it's full of fascinating stuff like that.  Blit came from BLT, came from BLock Transfer, came from PDP-10 assembly.  Marvellous.  The most I ever did with a PDP-10 was a bit of BASIC and playing Pac-man, but I still use the vocabulary it spawned today.  That's cool! Cool

Hellomynameis Charlie Dobbie.
mbw
Guest
« Reply #5 - Posted 2003-01-13 14:06:48 »

Can anyone post an example basic blitting-algorithm to get an idea, how to do it ?
(sorry, if this is for the newless clewbies section)

Thanks !

mbw  Grin
Offline Matzon

JGO Knight


Medals: 19
Projects: 1


I'm gonna wring your pants!


« Reply #6 - Posted 2003-01-13 14:28:53 »

System.arrayCopy() is a basic blit operation


Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #7 - Posted 2003-01-14 02:18:54 »

So is
drawImage(img,x,y,null);

Use drawImage and accelerated images to get at the hardware support for image blitting.   See other threads for details on using accelerated images.  Particularly keeping the current limitations on transparency in mind.

mbw
Guest
« Reply #8 - Posted 2003-01-29 07:20:51 »

Thank u all !

mbw  Grin
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