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

[Martin Andersson]

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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