On Thu, 03 Feb 2005 19:44:57 +0100, Rune Petersen <[EMAIL PROTECTED]> wrote:
> Vladimir Dergachev wrote:
> >
> >
> > On Thu, 3 Feb 2005, Rune Petersen wrote:
> >
> >> Vladimir Dergachev wrote:
> >>
> >>>>
> >>>> X is 1280x1024 and the lessons uses 640x480 in full screen.
> >>>
> >>>
> >>>
> >>> I put back a single PFS_NOP as the syntax does not allow for less
> >>> than 1 instruction (alu_end==0 corresponds to 1 instruction).
> >>
> >> You are right, but why do we get away with having 0 tex instruction?
> >> It should be under the same restrictions.
> >
> >
> > There is a special bit that tells whether node0 has texture instructions
> > - it is not set for FLAT_COLOR_PIPELINE.
> >
> >>>
> >>> Does this fix things for you ?
> >>
> >> No, I need 2.
> >
> >
> > Do you still see the same problem by stretching the window as large as
> > it can be ?
>
> there are no problems with stretching the window
>
> I've experimented and found that 2 NOPs doesn't really help.
> if I set full screen to be the LCDs native resolution it happens less often.
> I think this problem DVI-related. Until I or someone else can show the
> problem is with the r300 code you should leave this alone.
>
> Do you know who is responsible for the DVI-code?
>
lots of people have touched that. it could be related to the display
buffer watermark code. perhaps it needs some tweaks for your chip.
take a look at radeon_driver.c::RADEONInitDispBandwidth()
it looks like the r420 isn't supported quite yet:
/* R420 family not supported yet */
if (info->ChipFamily == CHIP_FAMILY_R420) return;
Alex
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