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Old 20th September 2007, 07:35   #47  |  Link
IanB
Avisynth Developer
 
Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 3,167
Yes internally doing a BitBlt(..., dest_pitch*2, ....) would be twice as fast as the weave I suggested, which does the above blit twice.

The resizer core does struggle to do a point-resize efficently, it stupidly goes through the full motion, multiplying every pixel by 1 in a loop of 1 cycle.
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