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

[Marek Olšák]

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
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