[PATCH v5 0/3] Support 64 bpp half float formats

[Strasser, Kevin]

Maarten Lankhorst wrote:
> Op 13-02-2019 om 16:53 schreef Ville Syrjälä:
> > On Fri, Feb 08, 2019 at 01:49:40PM -0800, Kevin Strasser wrote:
> >> This series defines new formats and adds implementation to the i915 driver.
> >> Since posting v1 I have removed the pixel normalize property, as it's not
> >> needed
> >> for basic functionality. Also, I have been working on adding support to
> >> userspace, but we can't land any patches until drm_fourcc.h has been updated
> >> here.
> >>
> >> I have submitted a series to Mesa to make use of the RGBA ordered formats:
> >>   https://patchwork.freedesktop.org/series/54759/
> >>
> >> My igt branch is reworked to drop usage of pixel normalize and includes use
> >> of f16c intrinsics to speed up conversion:
> >>   https://gitlab.freedesktop.org/strassek/igt-gpu-tools/commits/fp16
> > Was that posted to the ml? I can't seem to find it.
> >
> > Anyways, a quick look at the web thing tells me this predates
> > Maarten's cairo float stuff. I believe that has now landed so you
> > should probably switch to using that instead of rendering at 8bpc.
>
> Yes, it's now in upstream igt. :)
>
> RGB96F is just a float[3] = { r, g, b }; RGBA128F is the same with the alpha
> channel at the end,
>
> should be possible to convert to half float with the right changes to the
> conversion function.

I've updated my branch to use the new float formats. Here is a link to the relevant commit:
https://gitlab.freedesktop.org/strassek/igt-gpu-tools/commit/11d14a37859e9dfd43755feb631e4b530d666392

Thanks,
Kevin