[PATCH] glamor: check max native ALU instructions

[Alex Deucher]

On Wed, Jan 28, 2015 at 4:55 PM, Ian Romanick <idr at freedesktop.org> wrote:
> On 01/28/2015 01:00 PM, Olivier Fourdan wrote:
>> On 28/01/15 21:17, Ian Romanick wrote:
>>>
>>> Do we know which GPUs cannot meet this limit and also do not have "true"
>>> integer support?  I wonder if we should go ahead and do the
>>> GL_MESA_shading_language_130 or GL_MESA_gpu_shader_int32 extensions that
>>> we had previously discussed, and remove support for desktop OpenGL
>>> drivers that cannot do those.
>>
>> The issue has been reported on i945GM and G31/G33 at least, but I dunno
>> if those have true integer support.
>
> They do not.  I only know of a small set of non-GL 3.0 GPUs that can:
> Intel i965 through Iron Lake and vc4.  I'm not sure where R400 and R500
> (or older NVIDIA chips supported by nouveau) lie in the spectrum.

No integer support on pre-R600 hardware.

Alex