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

[Tapani]

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>.


> On Thu, Aug 21, 2014 at 4:16 PM, Tapani <tapani.palli at intel.com> wrote:
>> On 08/21/2014 05:26 AM, Chris Forbes wrote:
>>> On Thu, Aug 21, 2014 at 12:36 AM, Tapani Pälli <tapani.palli at intel.com>
>>> wrote:
>>>> +++
>>>> b/tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/glsl-algebraic-div-double.shader_test
>>> ...
>>>> +       gl_FragColor = vec4(dvec4(1.0lf, 0.6lf, 1.0lf, 1.0lf) / dcolor);
>>> ...
>>>> +uniform vec4 color 2.0 3.0 4.0 1.0
>>>> +draw rect -1 -1 2 2
>>>> +probe all rgba 0.5 0.2 0.25 0.0
>>> Presumably you mean 1.0 in the alpha channel?
>>
>> Yes, thanks for catching this. The original test had probe for rgb so I was
>> not careful when adding alpha.
>>
>> // Tapani
>>