Ohh...Nice information,,,Thanks a lot James..You are right that Linux
distributer like Fedora has modified Free version and having patches for
them but it is just for Xorg structure and I cant use it for XFree86. Any
help regarding this will be much helpful.

Thanks,
Paresh


On 6/26/08, James Weatherall <[EMAIL PROTECTED]> wrote:
>
> Paresh,
>
> Alpha channels allow imagery to be composed with transparency, so that the
> original image still shows through to some extent behind the newly-applied
> stuff.  This is called alpha-blending, and is used to render text more
> prettily, amongst other things.
>
> The X11 RENDER extension is supported by VNC Enterprise Edition servers,
> but
> not by the current VNC Free Edition, although I believe that many Linux
> distributions have modified Free Edition servers that also support RENDER.
> Regardless of whether RENDER is enabled, the desktop framebuffer will still
> use depth 24, since it doesn't need an alpha channel.
>
> Cheers,
>
> --
> Wez @ RealVNC Ltd
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of paresh masani
> > Sent: 26 June 2008 12:22
> > To: James Weatherall
> > Cc: Corne Beerse; vnc-list@realvnc.com
> > Subject: Re: 24-bit color support to Xvnc
> >
> > James,
> >
> > I think you are missing something here. Google tells me (
> > http://en.wikipedia.org/wiki/Alpha_channel) that Microsoft
> > makes use of this upper 8 bits. however, I found that X11
> > only uses these bits as part of XRender and  RealVNC doesn't
> > seem to support XRender. Am i correct?
> >
> > Thanks,
> > Paresh
> >
> >
> > On 6/20/08, James Weatherall <[EMAIL PROTECTED]> wrote:
> > >
> > > Paresh,
> > >
> > > That means that your Windows desktop is using depth 24 at 32
> > > bits-per-pixel, not depth 32 - depth refers to the number
> > of bits of
> > > actual colour information per pixel, while bits-per-pixel refers to
> > > the size of data element used to store the pixel values.
> > >
> > > The standard format for the "Highest (32-bit)" setting in
> > Windows is 8
> > > bits for each of the red, green and blue components, with the 8
> > > remaining bits unused(*).
> > >
> > > --
> > > Wez @ RealVNC Ltd
> > >
> > > (*)  Actually, they might be used for alpha-channel,
> > Z-buffer or other
> > > auxilliary data, but in VNC-land, we normally just count
> > the RGB bits
> > > towards the "depth".
> > >
> > >
> > > > -----Original Message-----
> > > > From: paresh masani [mailto:[EMAIL PROTECTED]
> > > > Sent: 20 June 2008 09:18
> > > > To: James Weatherall
> > > > Cc: Corne Beerse; vnc-list@realvnc.com
> > > > Subject: Re: 24-bit color support to Xvnc
> > > >
> > > > Yes James...I have set the screen resoulution to
> > Higesh-32 bit color.
> > > >
> > > > Thanks,
> > > > Paresh
> > > >
> > > >
> > > > On 6/19/08, James Weatherall <[EMAIL PROTECTED]> wrote:
> > > >
> > > >       Paresh,
> > > >
> > > >       Are you sure that the machine on which you're using
> > VNC Viewer
> > > > supports
> > > >       depth 32, and not depth 24 at 32 bits-per-pixel?
> > > >
> > > >       --
> > > >       Wez @ RealVNC Ltd
> > > >
> > > >
> > > >       > -----Original Message-----
> > > >       > From: paresh masani [mailto:[EMAIL PROTECTED]
> > > >       > Sent: 19 June 2008 14:32
> > > >       > To: Corne Beerse
> > > >       > Cc: James Weatherall; vnc-list@realvnc.com
> > > >       > Subject: Re: 24-bit color support to Xvnc
> > > >       >
> > > >       > Thanks a lot for much clarification. Means Xvnc will not
> > > >       > supprot 32bit color ever. Is it possible? because my
> > > >       > vncviewer can run at 32-depth but Xvnc doent support
> > > > 32-depth. why??
> > > >       >
> > > >       > Thanks,
> > > >       > Paresh
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > _______________________________________________
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> >
>
>
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