Try doing a flip of the primary surface after the blit.
On Thu, Nov 27, 2008 at 11:47 AM, vijay anand <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have created a separate surface with DFBSurfaceCapabilities flags
> (DSCAPS_DOUBLE | DSCAPS_VIDEOONLY).
> Please refer the attached test code which uses a separate (user) surface
> for Blit function. After Blitting the user surface into Primary surface it
> shows black screen instead of blitted image.
> Any idea about this behavior? Please help to resolve this issue.
>
> Regards,
> Vijay
> ------------------------------
> *From:* Amarinder Singh Sethi <[EMAIL PROTECTED]>
> *To:* vijay anand <[EMAIL PROTECTED]>
> *Cc:* directfb-users@directfb.org
> *Sent:* Thursday, 27 November, 2008 11:37:52 AM
> *Subject:* Re: [directfb-users] create surface/display layer failed
>
> If your requirement is just to have a surface to draw something to be
> blitted onto the primary surface later, then you don't really need a new
> layer. You can create a new surface and do all your drawings there. After
> this you can do a blit onto the primary surface.
>
> On Wed, Nov 5, 2008 at 12:52 PM, vijay anand <[EMAIL PROTECTED]>wrote:
>
>> Hi,
>>
>> In our application we are have 2 layers (primary and video layer).. I'm
>> trying to create
>> 3rd layer via GetDisplayLayer (or CreateSurface) for drawing images into
>> that and later
>> we want to blit that surface into primary surface. Please refer the below
>> code
>> block which we use to create user layer. But it fails. We are unable to
>> test
>> blit functions. kindly help to resolve this issue.
>>
>> CreateUserLayer
>> ()
>> {
>> IDirectFBDisplayLayer
>> *pdisplaylayer;
>>
>> dfb->GetDisplayLayer
>> ( dfb, 2, &pdisplaylayer ); // this api call returns failure
>>
>> if (ret || !
>> pdisplaylayer)
>>
>> {
>>
>> printf("failed to GetDisplayLayer\n");
>> return
>> false;
>>
>> }
>> }
>>
>> Regards,
>> Vijay
>>
>>
>> Add more friends to your messenger and enjoy! Go to
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>>
>> _______________________________________________
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>>
>
>
>
> --
> ---------------
> Thanks
> Amarinder
>
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---------------
Thanks
Amarinder
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