[Mesa-dev] spec/!OpenGL 3.0/gl-3.0-texture-integer fails on r600g

[Marek Olšák]

Sorry, I have no idea. You can try to remove support for RGBX integer
formats and see if it helps.

In is_format_supported, return FALSE for all R?G?B?X_?INT formats.

Marek

On Sat, Aug 3, 2013 at 11:51 AM, Martin Andersson <g02maran at gmail.com> wrote:
> Well, I should have been more clear. If I do this:
>
> 263: value[3] = 0;
> 290: expected[3] = 1.0;
>
> The test always passes, but if I only do this:
>
> 290: expected[3] = 1.0;
>
> The test fails with this error:
>
> texture-integer: failure with format GL_RGB8I_EXT:
>   texture color = 92, 126, 14, 104
>   expected color = 0.25, 0.5, 0.75, 1
>   result color = 0.25098, 0.501961, 0.74902, 0
> PIGLIT: {'result': 'fail' }
>
> //Martin
>
> On Sat, Aug 3, 2013 at 5:23 AM, Marek Olšák <maraeo at gmail.com> wrote:
>> FragShaderText contains the shader code. Anyway, we have found the
>> issue: expected[3] should really be set to 1.0, because RGB formats
>> must return (r,g,b,1). It's a bug in the piglit test.
>>
>> Marek
>>
>> On Fri, Aug 2, 2013 at 11:44 PM, Martin Andersson <g02maran at gmail.com> wrote:
>>> On Fri, Aug 2, 2013 at 2:52 PM, Marek Olšák <maraeo at gmail.com> wrote:
>>>> The format doesn't have alpha. See what the texture fetch writes to
>>>> the alpha channel.
>>>
>>> I looked at the code but I can't figure out where the texture fetch
>>> happens, could you point me in the right direction?
>>>
>>>>
>>>> You may try setting "texture-integer.c:290" to "expected[3] = 1.0;"
>>>
>>> The test passes if I do that.
>>>
>>> //Martin
>>>
>>>>
>>>> Marek
>>>>
>>>> On Fri, Aug 2, 2013 at 2:15 PM, Martin Andersson <g02maran at gmail.com> wrote:
>>>>> Hi,
>>>>>
>>>>> I started to look at why the spec/!OpenGL 3.0/gl-3.0-texture-integer
>>>>> sometimes fails on my AMD 6950, using mesa master. It fails with
>>>>> errors like this:
>>>>>
>>>>> texture-integer: failure with format GL_RGB8I_EXT:
>>>>>   texture color = 100, 9, 71, 0
>>>>>   expected color = 0.25, 0.5, 0.75, 0
>>>>>   result color = 0.25098, 0.501961, 0.74902, 1
>>>>> PIGLIT: {'result': 'fail' }
>>>>>
>>>>> When I ran the test a bunch of times I found that it only failed when
>>>>> the last texture color was zero. So when I changed this code in the
>>>>> pigilt test:
>>>>>
>>>>> value[0] = rand() % max;
>>>>> value[1] = rand() % max;
>>>>> value[2] = rand() % max;
>>>>> value[3] = rand() % max;
>>>>>
>>>>> to this:
>>>>>
>>>>> value[0] = rand() % max;
>>>>> value[1] = rand() % max;
>>>>> value[2] = rand() % max;
>>>>> value[3] = 0;
>>>>>
>>>>> The test always fails.
>>>>>
>>>>> I found this bug https://bugs.freedesktop.org/show_bug.cgi?id=63664
>>>>> But I can't reproduce this bug on my intel G45 (running mesa 9.1.5).
>>>>>
>>>>> Anyone know what is causing this or how I could debug it further?
>>>>>
>>>>> //Martin
>>>>> _______________________________________________
>>>>> mesa-dev mailing list
>>>>> mesa-dev at lists.freedesktop.org
>>>>> http://lists.freedesktop.org/mailman/listinfo/mesa-dev