[SDL] refreshing my knowledge

Patrick McFarland unknown at panax.com
Sat Jan 11 17:11:01 PST 2003


On 06-Jan-2003, Roger D. Vargas wrote:
> I would like to confirm some things about blits:
> 
> video ram to video ram blits are faster
> writing directly to vram (ie. modifying pixels) is very slow.
> system ram to video ram blits are a bit slower

Video to video is fast, system to video (or writing to vram) is fast, 
system to system is really fast, and video to system (or reading vram) 
is really slow. 

-- 
Patrick "Diablo-D3" McFarland || unknown at panax.com
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd 
all be running around in darkened rooms, munching magic pills and listening to
repetitive electronic music." -- Kristian Wilson, Nintendo, Inc, 1989
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