[Mesa-dev] [PATCH 1/4] gallium: Add integer 64 capability

[David Airlie]

----- Original Message -----
> From: "Marek Olšák" <maraeo at gmail.com>
> To: "Nicolai Hähnle" <nhaehnle at gmail.com>
> Cc: "Ilia Mirkin" <imirkin at alum.mit.edu>, mesa-dev at lists.freedesktop.org, "Dave Airlie" <airlied at redhat.com>
> Sent: Friday, 27 January, 2017 6:18:32 AM
> Subject: Re: [Mesa-dev] [PATCH 1/4] gallium: Add integer 64 capability
> 
> On Thu, Jan 26, 2017 at 9:04 PM, Nicolai Hähnle <nhaehnle at gmail.com> wrote:
> > On 26.01.2017 20:23, Ilia Mirkin wrote:
> >>
> >> I have no serious preference, but for doubles, we use a shader cap.
> >
> >
> > I think this:
> >
> >> On Thu, Jan 26, 2017 at 2:09 PM, Nicolai Hähnle <nhaehnle at gmail.com>
> >> wrote:
> >>>
> >>> v1.1: move to using a normal CAP. (Marek)
> >
> >
> > ... suggests that this has already gone back and forth :)
> >
> > Pragmatically, is there hardware that can do 64 bit ints only in some of
> > the
> > shader stages?
> 
> I'll give you a different answer: I think the double cap and other
> shader caps can be changed to normal caps if there is no reason for
> them to be shader caps.
> 

I think the doubles cap should be non-shader now, but not so motivated to write a patch.

Dave.