Hi,
modify you code as follows.
DFBCHECK(DirectFBInit(&argc, &argv));
/* add this call to disable the background */
DirectFBSetOption ("bg-none", NULL);
DFBCHECK(DirectFBCreate(&dfb));
On Wed, Jan 5, 2011 at 11:16 AM, aashish bhanawat <[email protected]>wrote:
> Hi,
>
>
> I am playing a video using native call(Not directfb). I created a primary
> surface.and draw a image. When i clearing the image using FillRectangle i am
> getting a black patch. I want to clear using transparency means on clear i
> should able to see video rather than black patch. How can i achieve this?
>
>
> Here is code snippet:-
>
> /* Creating primary surface */
> dsc.flags = DSDESC_CAPS | DSDESC_PIXELFORMAT;
> dsc.pixelformat = DSPF_ARGB;
> dsc.caps = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
> DFBCHECK (dfb->CreateSurface( dfb, &dsc, &pFrameBuffer ));
>
> /* Drawing Image */
> dfb->CreateImageProvider(dfb, img, &provider);
> provider->GetSurfaceDescription(provider, &sDesc);
> sDesc.flags = DSDESC_PIXELFORMAT | DSDESC_WIDTH | DSDESC_HEIGHT;
>
> sDesc.width = 200;
> sDesc.height = 200;
> sDesc.pixelformat = DSPF_ARGB;
>
> dfb->CreateSurface(dfb, &sDesc,&imgSurface);
> imgSurface->Clear(imgSurface, 0x00, 0x00, 0x00, 0xFF);
> provider->RenderTo(provider, imgSurface, NULL);
> provider->Release(provider);
>
> pFrameBuffer->SetBlittingFlags(pFrameBuffer,DSBLIT_BLEND_ALPHACHANNEL);
> pFrameBuffer->SetPorterDuff(pFrameBuffer,DSPD_SRC_OVER);
> pFrameBuffer->Blit(pFrameBuffer, imgSurface, NULL, 200, 200);
> pFrameBuffer->SetBlittingFlags(pFrameBuffer,DSBLIT_NOFX);
> pFrameBuffer->SetPorterDuff(pFrameBuffer , DSPD_NONE);
> DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL,
> DSFLIP_WAITFORSYNC));
> DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL, 0));
>
> /* Clear screen */
> //pFrameBuffer->SetDrawingFlags(pFrameBuffer, DSDRAW_BLEND); //I
> tried this also but success
> //pFrameBuffer->SetPorterDuff(pFrameBuffer,DSPD_SRC_OVER);
> DFBCHECK(pFrameBuffer->SetColor(pFrameBuffer,0xFF,0x00,0x00,0xFF));
> DFBCHECK(pFrameBuffer->FillRectangle(pFrameBuffer, 200, 200, 200,
> 200));
> DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL,
> DSFLIP_WAITFORSYNC));
> DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL, 0));
>
>
> --
> JOY
>
> Never expect things to happen.. struggle and make them happen.
> never expect yourself to be given a good value create a value of your own
>
> _______________________________________________
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> http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
>
>
--
*
"If you ask a question - you will be a fool for 5 minutes, otherwise
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