[Mesa-dev] Summer of Code ideas (maybe just an idea wishlist?)

[Rob Clark]

well, bringing compute to the other gallium drivers in general, beyond
radeon, is probably an entire project on it's own.. but a very
worthwhile project (IMHO).. since opencl (beyond embedded profile)
requires double support, that probably also would expose the need for
fp64 lowering in more drivers.

freedreno probably needs more work on the compiler side for anything
other than really simple cl kernels.. but we'll get there eventually.
In the mean time, nouveau is a pretty good candidate for compute
support (since it already has a much more advanced compiler
infrastructure)

BR,
-R

On Thu, Mar 26, 2015 at 8:54 PM, Aditya Avinash
<adityaavinash1 at gmail.com> wrote:
> Are you suggesting bringing OpenCL support for Adreno gpus and using
> softfloat?
>
> On Thu, Mar 26, 2015 at 8:50 PM, Rob Clark <robdclark at gmail.com> wrote:
>>
>> On Thu, Mar 26, 2015 at 3:10 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> > On Thu, Mar 26, 2015 at 3:02 PM, Jason Ekstrand <jason at jlekstrand.net>
>> > wrote:
>> >> On Thu, Mar 26, 2015 at 12:00 PM, Aditya Avinash
>> >> <adityaavinash1 at gmail.com> wrote:
>> >>> I mean, implementing fp64 on single precision systems.
>> >>
>> >> Ok, That makes more sense!  Having lowering passes for various FP64
>> >> operations would be great.
>> >
>> > We should make sure that there are customers of such work. It only
>> > makes sense to do this when everything else but FP64 are supported for
>> > GL 4.0 (including tess). r600 (eg/ni) is an obvious customer, although
>> > that may be easier to do in sb (I believe GlennK has been looking at
>> > it, not sure how far he's gotten). Other than that... not sure. Could
>> > be that Adreno A420 can do tess && has no native fp64 support, still
>> > need to figure that out (hasn't been RE'd yet).
>>
>> fwiw, fp64 lowering is almost certainly useful for a3xx when we get to
>> the point of doing compute..
>>
>> (on that topic, TGSI or NIR support for clover would be kinda awesome
>> to get compute going on some drivers other than radeon.. probably TGSI
>> would be more immediately useful for more drivers, but not sure how
>> much would need to be added to TGSI, and NIR seems to be more
>> future-proof..)
>>
>> BR,
>> -R
>>
>>
>> >
>> >   -ilia
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>
>
>
>
> --
> Regards,
> Aditya Atluri,
> USA.
>