[Mesa-dev] [PATCH v3 06/29] glsl: add ARB_gpu_shader_fp64 to the glsl extensions. (v2)

[Aditya Avinash]

Yes. All the low end cards of AMD does not support native double precision.
(Until the most recent SI).

Are there any good papers or documentation to do soffloat? Or emulate fglrx
stuff?



On Sun, Feb 8, 2015 at 5:51 PM, Dave Airlie <airlied at gmail.com> wrote:

> On 9 February 2015 at 08:44, Aditya Avinash <adityaavinash1 at gmail.com>
> wrote:
> > Ya. I just want to know that part "only some r600".
> > I believe some of the nv0 cards doesn't support double. You have any
> ideas
> > or suggestions to make it possible?
>
> For AMD
> http://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units
>
> has what cards directly support double precision for r600/700/evergreen
>
> The plan is to implement a soffloat library like the fglrx drivers do for
> the
> GPUs that don't do doubles just to satisfy the GL4.0 requirement.
>
> Whether we implement this in GLSL, NIR or in the backends is currently
> an open question.
>
> Not sure what the nvidia limitations are if any.
>
> Dave.
>



-- 
Regards,

*Aditya Atluri,*

*USA.*
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