Hi,
you can add "software-warn" in your etc/directfbrc
to check that the blit was done inhw or not.
On Thu, Oct 29, 2009 at 8:35 AM, Lionel Landwerlin <llandwer...@gmail.com>wrote:
> Ok,
>
> anyway you're probably experiencing a software blit. But 0.5s... it's
> quite slow. So a few more question to find why directfb is doing the
> blit operation in software :
> - what's the size of the screen ?
> - which gfxdriver ?
> - what's your default pixelformat (maybe not handled by hardware) ?
>
> Regards,
>
> Le mercredi 28 octobre 2009 à 16:45 -0700, Jack W a écrit :
> > The dsc is
> > ================================================================
> > ......
> > primary->GetSize (primary, &screen_w, &screen_h);
> >
> > dsc.flags = DSDESC_CAPS | DSDESC_WIDTH | DSDESC_HEIGHT;
> > dsc.caps = DSCAPS_NONE;
> > dsc.width = screen_w;
> > dsc.height = screen_h;
> >
> > ......
> > dfb->CreateSurface (dfb, &dsc, &tempSurface);
> > tempSurface->SetBlittingFlags (tempSurface, DSBLIT_NOFX);
> > ......
> > ================================================================
> >
> > Thanks.
> >
> > Jack
> >
> >
> >
> >
> > >
> > > "Lionel Landwerlin" <llandwer...@gmail.com>
> > > Le mercredi 28 octobre 2009 à 15:49 -0700, Jack W a écrit :
> > >
> > > How did you fill the dsc structure ?
> > >
> > >
> > --- On Wed, 10/28/09, Jack W <ji...@yahoo.com> wrote:
> >
> > From: Jack W <ji...@yahoo.com>
> > Subject: [directfb-dev] Blit is slow (modified post) - Re: How
> > to save the current framebuffer to a surface?
> > To: directfb-dev@directfb.org
> > Date: Wednesday, October 28, 2009, 6:49 PM
> >
> > Blit from the primary to another surface is very slow, if
> > there is any problem in my code?
> > I tried the following code.
> >
> > ==========================================================
> > ......
> > IDirectFBSurface *tempSurface;
> > dfb->CreateSurface (dfb, &dsc, &tempSurface); /* The
> > tempSurface is not primary. */
> > ......
> > while (...)
> > {
> > ......
> > primary->FillTriangle(....);
> > primary->DrawLine(....);
> > .....
> > primary->Flip (primary, NULL, DSFLIP_ONSYNC); /* Filp
> > here because I want to save the primary surface to
> > tempSurface. Is my thought correct? */
> >
> > tempSurface->Blit(tempSurface, primary, NULL, 0, 0);
> >
> > primary->Blit(primary, tempSurface, NULL, 200,
> > 200); /* Offset the previous screen. */
> >
> > primary->Flip (primary, NULL, DSFLIP_ONSYNC); // Main
> > loop flip
> > ......
> > }
> > ......
> > ==========================================================
> >
> > This loop had 0.5 second delay when
> > "tempSurface->Blit(tempSurface, primary, NULL, 0, 0)" was
> > executed. If I commented this line, no delay. Does anyone know
> > the reason?
> >
> > Thanks a lot!
> >
> > Jack
> >
> >
> >
> > -----Inline Attachment Follows-----
> >
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> > directfb-dev@directfb.org
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> >
> >
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> > directfb-dev@directfb.org
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>
>
> --
> Lionel Landwerlin <llandwer...@gmail.com>
>
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>
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