[Mesa-dev] [RFC] [PATCH 2/2] i965: setup the edge flag enable bit in VE on SNB+

[Eric Anholt]

On Fri, 9 Sep 2011 13:21:57 +0800, Yuanhan Liu <yuanhan.liu at linux.intel.com> wrote:
> On Thu, Sep 08, 2011 at 09:25:30PM -0700, Kenneth Graunke wrote:
> > On 09/08/2011 06:59 PM, Yuanhan Liu wrote:
> > > On Thu, Sep 08, 2011 at 08:39:46AM -0700, Eric Anholt wrote:
> > >> On Thu,  8 Sep 2011 11:00:52 +0800, Yuanhan Liu <yuanhan.liu at linux.intel.com> wrote:
> > >>> BTW, this patch fix the oglc pntrast fail on SNB(haven't tested it on
> > >>> IVB yet).
> > >>
> > >> Could you include a piglit test for the failure?
> > > 
> > > Actually, this is an issue of edgeflag. You will also find this patch
> > > will fix the oglc edgeflag test fail. pntrast test case would also use
> > > polygonmode with edgeflag to render a point. Thus it failed.
> > > 
> > > I simply grep-ed the piglit repo, didn't find any references on
> > > glEdgeFlag. Seems that current piglit doesn't include this test?
> > 
> > You are right---piglit doesn't currently test glEdgeFlag.  I think Eric
> > was asking if you could please write a new test for piglit that
> > demonstrates the failure.  The rest of the community doesn't have access
> > to closed source test suites like oglc, but everyone can run piglit.
> > Having the test will help other developers avoid accidentally break
> > glEdgeFlag support in the future.
> 
> Got it. I may try to write one next week.
> 
> Besides this, any ideas on how to setup the edge flag enable bit? Or,
> does that patch make sense to you.
> 
> If Ok, I will resend the patch later with little change to apply Eric's
> suggestion.

The patch does look wrong according to the spec you quoted, which is
part of why I want to see some testcases.  That way we can figure out
why testcases might pass if the patch isn't what it should be, and build
better testcases.
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