[Mesa-stable] [Mesa-dev] [PATCH] st/mesa: only set primitive_restart when the restart index is in range

[Nicolai Hähnle]

On 20.10.2016 11:41, Marek Olšák wrote:
> I think st_indirect_draw_vbo needs the same fix.

Yes. The indirect path also doesn't handle the RestartFixedIndex case 
correctly. I'll send out a patch later that unifies those two paths.

Nicolai

>
> Marek
>
> On Wed, Oct 19, 2016 at 11:14 PM, Marek Olšák <maraeo at gmail.com> wrote:
>> On Wed, Oct 19, 2016 at 8:39 PM, Nicolai Hähnle <nhaehnle at gmail.com> wrote:
>>> From: Nicolai Hähnle <nicolai.haehnle at amd.com>
>>>
>>> Even when enabled, primitive restart has no effect when the restart index
>>> is larger than the representable values in the index buffer.
>>>
>>> Fixes GL45-CTS.gtf31.GL3Tests.primitive_restart.primitive_restart_upconvert
>>> for radeonsi.
>>
>> BTW, this fails on VI, but passes on CIK. The reason is that the hw
>> team changed the behavior and now it masks out the unused bits I
>> think. VI is and will be the only generation where it's different and
>> not configurable.
>>
>> Reviewed-by: Marek Olšák <marek.olsak at amd.com>
>>
>> Marek