Question about <primitive:127>
lex at cc.gatech.edu
Tue Dec 12 04:34:21 UTC 2000
forceToScreen for any form ought to run at the same speed. So just do:
[ 100 timesRepeat: [ Display forceToScreen: (0 at 0 extent: 320 at 200) ] ]
On my slow graphics system, this takes about 1600 msecs, ie 16 msecs per
Here's a test for BitBlt:
| sourceForm destForm |
sourceForm := Form extent: 320 at 200 depth: 32.
destForm := Form extent: 320 at 200 depth: 32.
[ 100 timesRepeat: [ sourceForm displayOn: destForm at: 0 at 0 ] ]
This gives about 500 msecs, ie 5 msecs per copy, one third of the time
needed to do a forceToScreen.
On my machine, the bitmap copies are a good bit faster than the final
forceToScreen. It would be interesting to see how other people's
computers fare--my graphics driver really does seem to be slow.
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