Slow emulation of StretchBlt
thunderbird2k at gmail.com
Tue Apr 18 00:05:37 CDT 2017
Depending on source, destination format and some other things it may
get accelerated e.g. by winex11.drv to xrender. Assuming xrender is
picked, it could be that your drivers are not accelerating this
On Mon, Apr 17, 2017 at 8:29 AM, andrea <mariofutire at googlemail.com> wrote:
> 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
> xdest, ydest,
> wdest, hdest,
> xSrc, ySrc,
> 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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