Slow emulation of StretchBlt
mariofutire at googlemail.com
Mon Apr 17 10:29:16 CDT 2017
I am looking at the performance of AppleWin (a 32 bit app) in Wine and have come across this
function StretchBlt which seems to be much slower in Wine that in Windows 10.
The call looks like this
With typical values
xdest 0 int
ydest 0 int
wdest 1120 int
hdest 768 int
xSrc 22 int
ySrc 17 int
#define FRAMEBUFFER_BORDERLESS_W 560
#define FRAMEBUFFER_BORDERLESS_H 384
In Wine they take 20x the time in Windows 10 (running inside a VirtualBox).
The consequence is CPU utilisation 20x higher in Wine than Windows.
I am running wine 2.5 in a 64 bit Fedora 25 machine.
Does this ring any bell?
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