[Mesa-dev] Draft ARB_parallel_shader_compile RFC

[Marek Olšák]

We also have asynchronous compilation for optimized shaders (linking
separate shaders etc.) using the same threaded queue as the initial
compilations, and we can't let apps suppress the optimized ones.

Marek

On Apr 18, 2017 1:08 PM, "Nicolai Hähnle" <nhaehnle at gmail.com> wrote:

> On 17.04.2017 14:07, Edward O'Callaghan wrote:
>
>> Hi folks,
>>
>> This is my early draft on the threaded shader compile "suggestion"
>> thread. The requirements according the spec are rather weak as
>> it is up to the implementation, which frankly can even just ignore
>> the requested thread count. However, afaik in the case of radeonsi
>> it is already threaded. Anyhoo I just wanted to get some feedback..
>>
>
> Thanks for working on this. As others said, 90% of the work is elsewhere.
> Some thoughts on that:
>
> Since radeonsi already does parallelization of the backend compile, this
> extension should control the sum of threads used for frontend *and* backend
> compiles. In practice, that should mean having a single thread pool which
> services both types of compiles (and links).
>
> My first thought would be to have a driver-allocated util_queue which gets
> passed across the Gallium and Mesa interfaces -- or perhaps have a driver
> function table entry for kicking off asynchronous compiles and links.
>
> Cheers,
> Nicolai
>
>
> Please kindly review,
>>
>> Edward O'Callaghan (3):
>>
>>  [PATCH 1/3] mesa: Add ARB_parallel_shader_compile boilerplate
>>  [PATCH 2/3] mesa: implement ARB_parallel_shader_compile
>>  [PATCH 3/3] st/mesa: enable ARB_parallel_shader_compile
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>>
>
> --
> Lerne, wie die Welt wirklich ist,
> Aber vergiss niemals, wie sie sein sollte.
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