bitblt

(computer science) bit block transfer

bitblt

/bit'blit/ [BLT] 1. Any of a family of closely relatedalgorithms for moving and copying rectangles of bits betweenmain and display memory on a bit-mapped device, or betweentwo areas of either main or display memory (the requirement todo the Right Thing in the case of overlapping source anddestination rectangles is what makes BitBlt tricky).

2. blit, BLT.

bitblt

(BIT BLock Transfer) In computer graphics, a hardware feature that moves a rectangular block of bits from main memory into display memory. It speeds the display of moving objects (animation, scrolling) on screen.

A hardware bitblt provides fastest speed, but bitblts are also implemented in software, even in non-graphics systems. For example, text scrolls faster when it is copied as a contiguous block (bitblt) to the next part of the window, rather than processing every character on every line. See stretch blt.

bitblt

bitblt

bitblt

bitblt

BITBLT