Hi,

My platform uses SMDK2410 CPU without other VGA chip, but I add DirectDraw
component into our workspace.
Howerver, when I run DirectDraw test in CETK, it shows "Skipped".
After I check the log, it shows the following message:
DirectDrawCreate returned hr=DDERR_NODIRECTDRAWSUPPORT (0x887600DE) [FILE:
ddrawuty_singletons.cpp LINE: 88]

Why ?


Thanks.

Yu.

Re: Does our OS support DirectDraw ? by Steve

Steve
Fri Apr 22 08:14:35 CDT 2005

There's more to DirectDraw then adding the component. You need to make sure
your display driver actually implements the necessary DirectDraw support as
well.

--
Steve Maillet
EmbeddedFusion
www.EmbeddedFusion.com
smaillet at EmbeddedFusion dot com



Re: Does our OS support DirectDraw ? by Yu

Yu
Mon Apr 25 00:47:58 CDT 2005

Dear David,

It seems that emulation DirectDraw is not supported in WinCE .
I do not add any speical VGA chip to provide DrawDraw in my platform now.
Does it mean if SMDK2410 does not support DirectDraw, we will not have
DirectDraw even though I add DirectDraw component ?


Thanks.

Yu.



Re: Does our OS support DirectDraw ? by ctacke/>

ctacke/>
Mon Apr 25 06:21:43 CDT 2005

As Steve said, it's up to the display driver to provide support. You'll
have to look at your BSP or ask your vendor if the supplied driver provides
support.

-Chris


"Yu" <Yu.Mails@msa.hinet.net> wrote in message
news:eySQRpVSFHA.1176@TK2MSFTNGP12.phx.gbl...
> Dear David,
>
> It seems that emulation DirectDraw is not supported in WinCE .
> I do not add any speical VGA chip to provide DrawDraw in my platform now.
> Does it mean if SMDK2410 does not support DirectDraw, we will not have
> DirectDraw even though I add DirectDraw component ?
>
>
> Thanks.
>
> Yu.
>
>



Re: Does our OS support DirectDraw ? by Yu

Yu
Tue Apr 26 01:59:34 CDT 2005

Hi,

Do you mean I still can write a display driver to support the DirectDraw
even if our HW does not support DirectDraw ?


Thanks.

Yu.



Re: Does our OS support DirectDraw ? by Dean

Dean
Tue Apr 26 07:39:18 CDT 2005

Yes. There is nothing magical about DirectDraw hardware support.
DirectDraw just exposes the video hardware more cleanly, and in a standard
fashion. Your video hardware doesn't have to support acceleration in order
for the driver to provide a Direct Draw interface.

--
Dean Ramsier - eMVP
Vibren Technologies
http://www.vibren.com/Products/schema_bsp.htm


"Yu" <Yu.Mails@msa.hinet.net> wrote in message
news:Oe7381iSFHA.164@TK2MSFTNGP12.phx.gbl...
> Hi,
>
> Do you mean I still can write a display driver to support the DirectDraw
> even if our HW does not support DirectDraw ?
>
>
> Thanks.
>
> Yu.
>
>



Re: Does our OS support DirectDraw ? by Yu

Yu
Tue Apr 26 21:40:34 CDT 2005

Hi,

Actually, I used DirectShow to write a video player in WinCE 4.2.
Howerver, I found the performance is bad.
Do you think our video player will have better performance if I add
DirectDraw support in my display driver ?

Thanks.


Yu.