Re: [Linux-fbdev-devel] Framebuffer and Video

[Romain D. <do...@ir...>]

so...@ma... wrote:

>       This looks good. I would like to suggest an alpha blend
> feature. This might be a hardware specific, but the geode processors
> support three alpha blend windows which can be anywhere within the video
> window. I haven't given a thought to how this can be
> added/implemented. Any ideas?

Well, if you use FB_VIDOVERLAY_CAPABILITY_ALPHAKEY and
FB_VIDOVERLAY_CAPABILITY_BLEND the hardware can do
alpha blending. Anything more sophisticated is probably
hardware-specific / application-specific...

> How long is this going to be a draft? Are there any issues
> in using it before it has been approved?

It's extremely unlikely to be integrated before Ruby itself
get integrated. And even when Ruby will be, it's not sure
that adding video overlay support to the FB device will
be approved by 'those in charge'. And we will need
driver support... But if enough people show interest odds
are better :-)

Issue is, if the interface change, you will need to change
your code :-)

-- 
DOLBEAU Romain               |  Energy derives from both                  
ENS Cachan / Ker Lann        |    the plus and negative                   
Thesard IRISA / CAPS         |       -- Metallica,                        
dol...@cl...    |           'Eye of the Beholder'