Re: [Linux-fbdev-users] FB_VISUAL_TRUECOLOR vs.FB_VISUAL_DIRECTCOLOR

[James L. <ja...@ak...>]

OK... I got distracted for a little while. I'm still not done yet. But I
have found another ATI card and it identifies itself as fb->Fix.visual == 3
(FB_VISUAL_PSEUDOCOLOR). So far, it seems to work the same as
FB_VISUAL_DIRECTCOLOR.

James.   :o)

----- Original Message ----- 
From: "James Lehman" <ja...@ak...>
To: <lin...@li...>
Sent: Sunday, August 06, 2006 10:17 PM
Subject: Re: [Linux-fbdev-users] FB_VISUAL_TRUECOLOR
vs.FB_VISUAL_DIRECTCOLOR


> I have a bit more work to do. I found that getting the color map right for
> packed pixel mode, 565, was kind of tricky; as you had indicated. I also
> realized that my code sort of relies on the fact that the color map is NOT
> in use when the card is in bpp higher than 8. I use the color map to hold
> shifted values from a palette bitmap file to get the colors onto the
screen.
> So I will have to rewrite that stuff; because with a direct color card,
the
> color map is always in use. I would love to send you a snapshot of my
code.
> It comes with a demo program that runs the video card through all sorts of
> tests in every possible bpp.
>
> James.   :o)
>
>
> ----- Original Message ----- 
> From: "Antonino A. Daplas" <ad...@gm...>
> To: <lin...@li...>; "James Lehman"
> <ja...@ak...>
> Sent: Sunday, August 06, 2006 7:42 PM
> Subject: Re: [Linux-fbdev-users] FB_VISUAL_TRUECOLOR
> vs.FB_VISUAL_DIRECTCOLOR
>
>
> > James Lehman wrote:
> > > I'm not so sure there is a bug in the kernel or the drivers, but I can
> say
> > > for sure that this code gets called.
> >
> > Then it's a bug.
> >
> > Can you try removing fb_set_cmap() in driver/video/fbmem.c:fb_set_var()?
> > If that still does not work, can you point me to a test app?
> >
> > Just to clarify, is this the sequence, or something near this?
> >
> > ...
> > ioctl(KD_GRAPHICS);
> > ...
> > ioctl(FBIOPUT_VSCREENINFO);
> >
> > ioctl(FBIOPUTCMAP);
> > ...
> > ioctl(KD_TEXT);
> > ...
> >
> > Tony
> >
>
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