[Mesa-dev] [PATCH 00/47] WIP: fp64 support for r600g

[Marc Dietrich]

Am Freitag, 25. August 2017, 11:25:02 CEST schrieb Marc Dietrich:
> Am Donnerstag, 24. August 2017, 16:39:58 CEST schrieben Sie:
> > On 24 August 2017 at 15:26, Marc Dietrich <marvin24 at gmx.de> wrote:
> > > Hi Elie,
> > > 
> > > Am Mittwoch, 23. August 2017, 13:07:30 CEST schrieb Elie Tournier:
> > >> From: Elie Tournier <elie.tournier at collabora.com>
> > >> 
> > >> TL;DR
> > >> This series is a "status update" of my work done for adding fp64
> > >> support
> > >> on
> > >> r600g. One of the biggest issue is due to a lake of accuracy on the rcp
> > >> implementation. Divide relay on rcp.
> > >> 
> > >> A branch is available on
> > >> https://github.com/Hopetech/mesa/tree/glsl_arb_gpu_shader_fp64_v3
> > >> Comments
> > >> and reviews are welcome.
> > > 
> > > what are the hardware requirements for testing this? R600g is a wide
> > > range
> > > ...
> > 
> > Hello Marc,
> > 
> > My code targets all the cards who doesn't support double but who
> > support GLSL 1.30:
> > https://github.com/Hopetech/mesa/blob/glsl_arb_gpu_shader_fp64_v3/src/mesa
> > /s tate_tracker/st_glsl_to_tgsi.cpp#L7059
> > 
> > So iirc, all r600g cards.
> 
> sorry, I was confused by the glewinfo which shows
> 	GL_ARB_gpu_shader_fp64: OK [MISSING]
> with and without your patches, but glxinfo gets it right.
> 
> This is on an RS780 (HD3200?) integrated gpu.
> 
> running:
> # ./piglit-run.py --dmesg --abort-on-monitored-error -s -l verbose -1 -t
> arb_gpu_shader_fp64 all results/fp64
> 
> gives ~70% crashes until the system hard locks (or reboots) at some point.
> 
> Maybe it had also problems before running some shaders, so it is not
> necessary a result of your work.
> 
> Because this is a very old platform which will never be able to see GL4, I
> don't take this result too serious.
> 
> I will redo the tests until it hard locks, so you can get at least a partial
> result.

not many results, lots of crash, too many gpu lockups ...
http://goo.gl/dhEbEb


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