Talk:Bit blit

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The article explains blitting using masks. While this technique was used with planar devices, when using a chunky framebuffer is much more common to just flag a color (usually 0) as transparent, and only copy pixels different from that color. --Pezezin 11:13, 14 October 2006 (UTC)

The article equates "BLIT" with "BitBLT" which is not necessarily correct. I believe the term "BLIT" actually stands for "Block Image Transfer" (and this is mentioned in the article on Blitter). R1chardJ0n3s 04:58, 19 February 2007 (UTC)

Nope. And it's irrelevant anyway. 'Blt' stands for 'BLock Transfer'. And 'Bit BLT' stands for 'bit block transfer'. Mostly because that's exactly what it does. Transfers a block of bits. There are no images associated with this. The masking can and is used for any general bit masking/moving op - not just computer displays and 'sprites'. —Preceding unsigned comment added by (talk) 16:58, 17 March 2009 (UTC)

Shouldn't this page redirect to BitBlt? (talk) 15:40, 2 October 2009 (UTC)

Early history[edit]

In "The Early History of Smalltalk" Alan Kay states explicitly "Diana built an early version of a bit field block transfer (bitblt) for displaying variable pitch fonts and generaIIy writing on the display." Kay does not credit Dan Ingalls, Larry Tesler, Bob Sproull with CREATING bitblt even though they had a part in it. Kay also says "Diana Merry's bitblt (the now famous 2D graphics operator for bitmap graphics) redesigned by Dan [Ingalls] and implemented in microcode, and a better, more general window interface." It seems clear that Diana Merry should not be listed after Dan, Larry and Bob in this WIkipedia article. She should get credit as the original inventor, and others worked on improvements. RLS (talk) 22:01, 9 March 2015 (UTC)

I worked with (or near, really) all these people at PARC in the 70s, and I believe what you say is correct. I think Dan was responsible for the generalization of the logical operation; Diana perhaps just had the 'or' operation; but I'm not sure. I can ask, but what you've already found in a sources seems worth going with. Dicklyon (talk) 06:49, 10 March 2015 (UTC)