[Piglit] [PATCH 1/3] arb_gpu_shader_fp64: add glsl algebraic tests

[Dave Airlie]

On 21 August 2014 at 22:55, Tapani <tapani.palli at intel.com> wrote:
> On 08/21/2014 03:50 PM, Ilia Mirkin wrote:
>>
>> On Thu, Aug 21, 2014 at 1:00 AM, Tapani <tapani.palli at intel.com> wrote:
>>>
>>> On 08/21/2014 07:21 AM, Chris Forbes wrote:
>>>>
>>>> With that fixed, does it pass on fglrx?
>>>
>>>
>>> I can only try that tomorrow but I believe it might still fail (unless we
>>> allow some fuzziness in results). All the double div calculations seemed
>>> to
>>> have some issues, result for example for red channel 1.0 / 2.0 was not
>>> 0.5
>>> but 0.500312 (don't remember the exact digits) so not quite the correct
>>> answer but almost there. Same was for blue which resulted in
>>> 0.250022<something>.
>>
>> That's fine -- the results are going into a texture that can't
>> represent these things with infinite (or even double) precision.
>
>
> Ah right, then it should be ok.
>
>> FWIW all these tests pass except the div one on nvc0 as well, which
>> seems to be due to a TGSI bug. (It's using 0.6 as the immediate for
>> the 4th component instead of 1.0.)
>
>
> This is good to know, I'll try to run these with nvidia as well when I get a
> chance.
>

What's the status on these tests? I keep rebasing them in my tree quite often.

Dave.