[Bf-committers] MinGW support

[Sergey Sharybin]

Did you compare speed of builds from builder.blender.org?

In my tests it takes only about 3sec until first tile appears during
rendering with BMW1M-MikePan. 40sec for sync sounds too much,

On Tue, Dec 29, 2015 at 3:57 PM, Cezary Kopias <cezary.kopias at gmail.com>
wrote:

> http://www.pasteall.org/pic/96989
>
> On 28 December 2015 at 06:19, Yousef Harfoush <bat3a at msn.com> wrote:
>
> > HI
> > here is 2 builds with the default config except no player, ge, osl,
> > opensubdiv, collada:
> > cmake+vc12       => 01:48
> > https://www.dropbox.com/s/03unj4x8xz3zp97/cmak%2Bvc12.7z?dl=0
> > cmake+mingw   => 01:08
> > https://www.dropbox.com/s/pbyyl1mpttkamwf/cmake%2Bmingw.7z?dl=0
> >
> > The render speed differs greatly between vc12 and mingw, using
> > BMW1M-MikePan scene with nvidia geforce 660
> >
> > 40 second spent on sync and bvh in vc12! which would kill animation
> > rendering times.
> >
> >
> >
> >
> > Regards
> > Yousef Harfoush
> > bat3a at msn.com
> >
> >
> >
> > > Date: Sun, 27 Dec 2015 10:14:47 +0000
> > > From: blender at dingto.org
> > > To: bf-committers at blender.org
> > > Subject: Re: [Bf-committers] MinGW support
> > >
> > > Can you back that value up?
> > >
> > > When we were still using MSVC 2008, the difference to gcc/clang was
> > > indeed quite large.
> > > But since we switched to MSVC 2013, I highly doubt it's more than
> 5-10%.
> > >
> > >
> > > Zitat von Yousef Harfoush <bat3a at msn.com>:
> > >
> > > > but is it not worth 40% render time reduction to support mingw, i
> > > > mean that's is like 2 years of optimizing cycles, isn't it, i think
> > > > it's better to drop vc12 in favor of mingw.
> > > >
> > >
> > >
> > > _______________________________________________
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> > > Bf-committers at blender.org
> > > http://lists.blender.org/mailman/listinfo/bf-committers
> >
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> >
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-- 
With best regards, Sergey Sharybin