[Mesa-dev] OpenCL Support on older AMD GPUs

[Alex Deucher]

On Thu, Aug 23, 2018 at 11:30 AM Benson Muite <benson.muite at ut.ee> wrote:
>
> Hi,
>
> Is there likely to be support for OpenCL on older AMD GPUs? I have tried running an OpenCL benchmark (https://github.com/mpicbg-scicomp/gearshifft) on an AMD A6-6420K APU running Fedora 28. The code seems to partially run, but gives incorrect results. Would it be challenging to add full OpenCL 1.1 support? The GPU of particular interest to me is Radeon HD 8470, caicos, which appears to have WIP:
>
> https://www.x.org/wiki/RadeonFeature
>
> How can one help move this forward?

Improve the OpenCL driver in mesa.  The shader ISA documents are
available on developer.amd.com and you can use the compute shader
support in the r600 OpenGL driver as a reference.

Alex