Actually perhaps a more accurate description is random flickering of the
triangles. They seem to flicker white for a second.

I checked the old code against the new code, too.

old = 0x000003f1 new = 0x000003f3

So the new code sets an extra bit.


On 7/12/07, Oliver McFadden <[EMAIL PROTECTED]> wrote:
> I just found that there seem to be some bugs with output routing now... With
> my
> engine I would see some random colors appear on the rendered tris.
>
> I've made a patch to restore the old behaviour but this would break BFC so
> we
> should really fix it properly. It probably affects other OpenGL programs
> too.
>
> On 7/11/07, Oliver McFadden <[EMAIL PROTECTED]> wrote:
> > I did some more testing and removing any one of the PRESENT bits breaks
> the
> > wave
> > and fog demos.
> >
> > I assume that those demos don't actually use all 3 colors but rather the
> > hardware must enable all or none...
> >
> > So assuming this is correct, fixing BFC1 should be pretty easy... just
> > enable
> > all 3 bits like for BFC0.
> >
> > Let me know if you find out anything more. :-)
> >
> >
> > On 7/11/07, Oliver McFadden <[EMAIL PROTECTED]> wrote:
> > > I just looked at the R300_VAP_OUTPUT_VTX_FMT_0 bits some more and found
> > the
> > > following:
> > >
> > > (7 << 2) == R300_VAP_OUTPUT_VTX_FMT_0__COLOR_1_PRESENT |
> > >             R300_VAP_OUTPUT_VTX_FMT_0__COLOR_2_PRESENT |
> > >             R300_VAP_OUTPUT_VTX_FMT_0__COLOR_3_PRESENT;
> > >
> > > So maybe for back facing color we must enable all those bits at once;
> the
> > > hardware might not allow them to be set individually?
> > >
> > > I'll do some more testing on this now.
> > >
> > >
> > > On 7/11/07, Oliver McFadden <[EMAIL PROTECTED]> wrote:
> > > > Okay. I'll push the current changes now and I can commit further
> changes
> > > > when
> > > > you find the bits for BFC1 and FOGC. :-) I verified that
> > progs/samples/fog
> > > > and
> > > > wave are working now.
> > > >
> > > > I'm glad to hear that Revenge is being useful, and great work on these
> > > > patches
> > > > btw. :-)
> > > >
> > > >
> > > > On 7/11/07, Tommy Schultz Lassen <[EMAIL PROTECTED]> wrote:
> > > > > Hi,
> > > > >
> > > > > I would guess that as well. But i am not cirtan.
> > > > >
> > > > > I am going to trey to make some more dumps to try to figure out
> COL1,
> > > > > BFC1 and FOGC.
> > > > >
> > > > > Mvh Tommy
> > > > >
> > > > > Oliver McFadden skrev:
> > > > > > Hi,
> > > > > >
> > > > > > The patch looks good to me. :-) I'll commit it to my local tree
> and
> > do
> > > > > > some
> > > > > > testing.
> > > > > >
> > > > > > Btw, I see in r300_emit.c:r300VAPOutputCntl0 you've changed the
> bits
> > > > > > for BFC0
> > > > > > but I wonder if we should change BFC1, too. I would guess based on
> > > > > > BFC0 that
> > > > > > BFC1 should be (8 << 2)?
> > > > > >
> > > > > >
> > > > > > On 7/11/07, Tommy Schultz Lassen <[EMAIL PROTECTED]> wrote:
> > > > > >> Hi,
> > > > > >>
> > > > > >> Here is a new patch for enabling Back face coloring.
> > > > > >>
> > > > > >> It is parts information from revenge dumps and parts guesswork.
> > > > > >>
> > > > > >> It also fixes a bug in r300FrontFace or rather r300UpdateCulling.
> > It
> > > > > >> would only set GL_CW og GL_CCW if wee set some culling.
> > > > > >>
> > > > > >> This patch gets wave and fog forking for me.
> > > > > >>
> > > > > >> /Tommy
> > > > > >>
> > > > > >> Tommy Schultz Lassen skrev:
> > > > > >> > Hi,
> > > > > >> >
> > > > > >> > I as well would prefer to bee more certain.
> > > > > >> >
> > > > > >> > I still need to confirm
> > R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT.
> > > > > >> >
> > > > > >> > When i have some more time i while cook up some code to
> exercise
> > > > thees
> > > > > >> > outputs. But if someone already has some code it would bee
> nice.
> > > > > >> >
> > > > > >> > Some testing on other ati cards than my X700 PCIE with some
> > > different
> > > > > >> > apps would bee nice.
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >> > Oliver McFadden skrev:
> > > > > >> >
> > > > > >> >> Hi,
> > > > > >> >>
> > > > > >> >> I would prefer if we could confirm the
> R300_VAP_OUTPUT_VTX_FMT_0
> > > > bits
> > > > > >> >> before
> > > > > >> >> merging this patch...
> > > > > >> >>
> > > > > >> >> Although r300_reg.h does mark many of the bits as guesses, so
> > I'm
> > > > not
> > > > > >> >> apposed to
> > > > > >> >> committing this patch now and figuring out all the bits later.
> > As
> > > > > >> long
> > > > > >> >> as you
> > > > > >> >> have confirmed that the bits you have changed are correct.
> > > > > >> >>
> > > > > >> >>
> > > > > >> >> On 6/10/07, Tommy Schultz Lassen <[EMAIL PROTECTED]> wrote:
> > > > > >> >>
> > > > > >> >>> Hi,
> > > > > >> >>>
> > > > > >> >>> Here is a new version of Back face color. It also enables
> FOGC
> > > out.
> > > > > >> >>>
> > > > > >> >>> VERT_RESULT_BFC1
> > > > > >> >>> VERT_RESULT_PSIZ
> > > > > >> >>> VERT_RESULT_COL1
> > > > > >> >>>
> > > > > >> >>> is pure guess work. If some one has a example that exercise
> > some
> > > of
> > > > > >> >>> those that wot help mi.
> > > > > >> >>>
> > > > > >> >>> VERT_RESULT_BFC0
> > > > > >> >>>
> > > > > >> >>> That is the only value where i can get Back faced to work for
> > the
> > > > > >> >>> moment.
> > > > > >> >>>
> > > > > >> >>> VERT_RESULT_FOGC
> > > > > >> >>>
> > > > > >> >>> That is the value where it seems to work for the moment. I
> have
> > > > some
> > > > > >> >>> indications that it is actually dependent on the the index
> used
> > > in
> > > > > >> >>> r300_vertprog.c t_dst_index.
> > > > > >> >>>
> > > > > >> >>> Cut it bee that r300VAPOutputCntl0 and r300VAPOutputCntl1
> > depends
> > > > > >> on the
> > > > > >> >>> values set in r300_vertprog.c t_dst_index?
> > > > > >> >>>
> > > > > >> >>>
> > > > > >> >>>
> > > > > >> >>>
> > > > > >> >>>
> > > > > >> >>> Oliver McFadden skrev:
> > > > > >> >>>
> > > > > >> >>>> Hi,
> > > > > >> >>>>
> > > > > >> >>>> I think something is wrong with the
> > > > > >> >>>> R300_VAP_OUTPUT_VTX_FMT_0__COLOR_2_PRESENT
> > > > > >> >>>> change you made. You changed this to (1 << 16) however this
> > > would
> > > > > >> >>>> correspond to
> > > > > >> >>>> the R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT define.
> > > > > >> >>>>
> > > > > >> >>>> So either your change is incorrect, or the defines for
> > > > > >> >>>> R300_VAP_OUTPUT_VTX_FMT_0
> > > > > >> >>>> are incorrect. It wouldn't surprise me if some of the bits
> for
> > > > this
> > > > > >> >>>> register are
> > > > > >> >>>> not correct; as far as I know the driver hasn't previously
> > > > > >> supported
> > > > > >> >>>> back-facing
> > > > > >> >>>> color, so these bits may have been guessed based on the
> > standard
> > > > > >> color
> > > > > >> >>>> bit.
> > > > > >> >>>>
> > > > > >> >>>> I don't think it would be hard to write some OpenGL code for
> > > > > >> revenge
> > > > > >> >>>> (my reverse
> > > > > >> >>>> engineering tool) to test these bits, though.
> > > > > >> >>>>
> > > > > >> >>>>
> > > > > >> >>>> On 6/8/07, Tommy Schultz Lassen <[EMAIL PROTECTED]> wrote:
> > > > > >> >>>>
> > > > > >> >>>>> Hi Oliver
> > > > > >> >>>>>
> > > > > >> >>>>> I got the checker board shown in wave :). The problem seems
> > to
> > > > bee
> > > > > >> >>>>> missing VERT_RESULT_BFC0.
> > > > > >> >>>>>
> > > > > >> >>>>> I have attached a patch that gets VERT_RESULT_BFC0 a step
> > > closer.
> > > > > >> >>>>>
> > > > > >> >>>>> There is a couple of problems:
> > > > > >> >>>>>
> > > > > >> >>>>> 1) This patch makes the driver do state changes allot.
> > > > > >> >>>>>
> > > > > >> >>>>> 2) I fink there is something more basic wrong wit how wee
> > > handle
> > > > > >> >>>>> VERT_RESULT.
> > > > > >> >>>>>
> > > > > >> >>>>> How do the chip now that the reg wee set in
> > > > > >> r300TranslateVertexShader
> > > > > >> >>>>> with code like:
> > > > > >> >>>>>
> > > > > >> >>>>> vp->outputs[VERT_RESULT_BFC0] = cur_reg++;
> > > > > >> >>>>>
> > > > > >> >>>>> is for VERT_RESULT_BFC0.
> > > > > >> >>>>>
> > > > > >> >>>>>
> > > > > >> >>>>> Any insights?
> > > > > >> >>>>>
> > > > > >> >>>>>
> > > > > >> >>>>> The patch makes the tube in fog look read instead of green.
> > NWN
> > > > > >> >>>>>
> > > > > >> >>> looks as
> > > > > >> >>>
> > > > > >> >>>>> it has for some time. OK but with weird  colors on  cloaks
> an
> > > > some
> > > > > >> >>>>> monsters.
> > > > > >> >>>>>
> > > > > >> >>>>> I am going to keep looking.
> > > > > >> >>>>>
> > > > > >> >>>>> /Tommy
> > > > > >> >>>>>
> > > > > >> >>>>>
> > > > > >> >>>
> > > > > >> >
> > > > > >> >
> > > > > >> >
> > > > > >>
> > > >
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> > > > > >>
> > > > > >>
> > > > >
> > > > >
> > > >
> > >
> >
>

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