I just finished getting the cvs source and I have the exact same
problems as you, the fix you provided works almost perfect! Thank you so
much. Alan please update cvs and try to fix the garbled in the bottom of
the screen.
Im really excited.... Now I can use linux as my only platform on my
laptop!
Question: Has anyone been able to get tv-out working? Or have any ideas
on how to do this? Any help would be great.
System Specs:
Toshiba Tecra 8200
P3 750
Trident Cyberblade XP 16mb
On Thu, 2001-10-11 at 22:11, John Clemens wrote:
>
> Egbert, Alan...
>
> More on this thread from the BladeXP camp..
>
> As reported earlier, here are the results I've had so far working with my
> CyberBladeXPm8 based laptop (HP N5430). All at 16bpp color bepth. Using
> mplayer -vo xv with Tom's Hardware Guide's CPU Burning avi and RealONE
> player with a DVD trailer.
>
> first, the hsync and vsync values that work for me (elimnate the "blue"
> from around the edges) are:
>
> pTrident->hsync -= 11;
> pTrident->vsync += 0;
>
> second, with the default XFree86 driver, I get video playing with the
> following display:
>
> +-----------------+
> | Bot | Bot |
> | right | Left |
> +-----------------+
> | Green / Garbage |
> | |
> +-----------------+
>
> Playing with the VID_ flags mentioned earlier today effected it, but only
> made it worse. (well, VID_OFF_SHIFT_4 seems to shift the tmage just above
> the screen..? i complete guess on my part)
>
> I've traced the code down to calculating 'offset' in
> trident_cideo.c:TRIDENTDisplayVideo, notibly this piece of code:
>
> if (pTrident->Chipset >= CYBERBLADEXPm8) {
> int bpp = pScrn->bitsPerPixel >> 3;
> int dstPitch = ((width << 1) + 15) & ~15;
> offset += (((dstPitch * (height - 1)) + bpp - 1) / bpp) >> 4;
> }
>
> I'm confused as to what this code is trying to do.. but by blindly playing
> with it, i've discovered a few things:
>
> if i change the shift value to something other than 4 (i.e., 5,6,7 or 8,
> ,16, 24) in the 'offset +=' line, the image seems to get a little better
> each time, with 16 being the best.
>
> let me try illustrating what I see when the shift is set to 8:
>
> .
>
> ++--+-------------------+
> ++ | |
> ++ R| |
> ++ I| Bottom |
> ++ G| Left |
> ++ H| |
> ++ T| |
> ++ | |
> +---+-------------------+
> | Garbage |
> +-----------------------+
>
> by playing with the offsets, I'm able to get the image much more
> centered.. It also appears that the left/right inversion in just line wrap
> beacuse the Xv window and memory aren't quite aligned (It's as if the
> video things the real 0,0 coortinate of the windo is where the '.' is
> above the screen.)
>
> Where you see '++' on the left of the image is where
> there's a slight (maybe 2-3 pixels wide?) doubling of the left side of the
> image.. ie, the first 3 pixel's are displayed, and then displayed again in
> the next three, than the image continues normally. What could be causing
> that?
>
> Realizing that by increasing the shift i was making the value approach 0,
> I took that line out. By taking out the line completely, ie, not
> modifying the offset, the image becomes almost 100% correct. (i relized
> this as i was typing this email) I get some garbage on the bottom
> pixel-line (almost appears to be 10 pixels of grabage/10 pixels of
> video/10pixels of garbage... etc..) and I still get the "image doubling"
> on the left side. but it does work nearly perfectly.
>
> So my questions: Why was the above code put in? what is it trying to do?
> How do I get rid of the last line of garbage? Where's the doublingo n the
> left side of the image coming from?
>
> sorry for the long post.
> john.c
>
> --
> John Clemens http://www.deater.net/john
> [EMAIL PROTECTED] ICQ: 7175925, IM: PianoManO8
> "I Hate Quotes" -- Samuel L. Clemens
>
>
>
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