[Mesa-dev] [PATCH 2/3] radeonsi: implement PK2H and UP2H opcodes

[Marek Olšák]

On Wed, Feb 3, 2016 at 10:19 AM, Michel Dänzer <michel at daenzer.net> wrote:
> On 03.02.2016 05:15, Marek Olšák wrote:
>> On Sat, Jan 30, 2016 at 12:46 AM, Marek Olšák <maraeo at gmail.com> wrote:
>>> From: Marek Olšák <marek.olsak at amd.com>
>>>
>>> Based on a gallivm patch by Ilia Mirkin.
>>>
>>> +8 piglit regressions due to precision issues
>
> You're saying this patch causes 8 piglit tests to fail? What are the
> benefits we get in exchange for that?

The tests are too strict and llvmpipe allegedly fails them too.

The benefit is that we'll get v_cvt_f32_f16 and v_cvt_f16_f32 instead
of emulation with integer instructions. They are GLSL 4.00 intrinsics.

Marek