On 19.01.2017 19:42, Roland Scheidegger wrote:
Am 19.01.2017 um 18:45 schrieb Ilia Mirkin:
On Thu, Jan 19, 2017 at 12:40 PM, Nicolai Hähnle
wrote:
On 19.01.2017 17:50, Ilia Mirkin wrote:
NVIDIA can't do division either (double or otherwise - but double is
even worse since the rcp is only hal
Am 19.01.2017 um 18:45 schrieb Ilia Mirkin:
> On Thu, Jan 19, 2017 at 12:40 PM, Nicolai Hähnle
> wrote:
>> On 19.01.2017 17:50, Ilia Mirkin wrote:
>>>
>>> NVIDIA can't do division either (double or otherwise - but double is
>>> even worse since the rcp is only half there). It has some fancy
>>> fu
On 19.01.2017 17:50, Ilia Mirkin wrote:
NVIDIA can't do division either (double or otherwise - but double is
even worse since the rcp is only half there). It has some fancy
functions which get things like division, sqrt, etc.
What does that mean, precisely? It might make sense to have a cap-bit
On Thu, Jan 19, 2017 at 12:40 PM, Nicolai Hähnle
wrote:
> On 19.01.2017 17:50, Ilia Mirkin wrote:
>>
>> NVIDIA can't do division either (double or otherwise - but double is
>> even worse since the rcp is only half there). It has some fancy
>> functions which get things like division, sqrt, etc.
>
On 19.01.2017 17:39, Roland Scheidegger wrote:
Double-capable Evergreen/NI can't do ddiv? Interesting. I wonder how
it's made d3d11 double conformant...
Even GCN has no native DDIV. It's implemented as a bunch of bespoke
instructions for scale-shifted DRCP followed by what is effectively a
ki
Oh, in this case a cap bit would have been fine then :-).
I was just thinking since d3d11 requires (if doubles are supported) real
ddiv (unlike fdiv), hw would have some way to do this without too much
trouble. But I guess it wasn't deemed important enough then.
Roland
Am 19.01.2017 um 17:50 sch
NVIDIA can't do division either (double or otherwise - but double is
even worse since the rcp is only half there). It has some fancy
functions which get things like division, sqrt, etc.
2017-01-19 11:39 GMT-05:00 Roland Scheidegger :
> Double-capable Evergreen/NI can't do ddiv? Interesting. I wond
Double-capable Evergreen/NI can't do ddiv? Interesting. I wonder how
it's made d3d11 double conformant...
Roland
Am 19.01.2017 um 14:59 schrieb Nicolai Hähnle:
> From: Nicolai Hähnle
>
> ---
> src/gallium/drivers/r600/r600_shader.c | 59
> ++
> 1 file changed,
From: Nicolai Hähnle
---
src/gallium/drivers/r600/r600_shader.c | 59 ++
1 file changed, 59 insertions(+)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index 5c4bc91..eaabb04 100644
--- a/src/gallium/drivers/r600/r6
