[Mesa-dev] List of unsupported extensions per driver

[Marek Olšák]

Hi Ilia,

R600/R700:
- can't do ARB_shader_storage_buffer_object
- can do ARB_robust_buffer_access_behavior (I think this one can
really be exposed unconditionally on all GL>=3 hardware)
- can do ARB_framebuffer_no_attachments
- ARB_query_buffer_object can be emulated with a vertex shader to read
the results, sum them up, and write them to the query buffer using
transform feedback.

Marek

On Wed, Jul 29, 2015 at 3:12 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
> I think the reality is that all the drivers you're listing are
> GL4.5-capable except nv50 (all but nv50 drive, in part, DX11/DX12
> hardware). Use my GT21x list to figure out which exts nv50 will just
> never be able to do.
>
> On Wed, Jul 29, 2015 at 9:09 AM, Romain Failliot
> <romain.failliot at foolstep.com> wrote:
>> I'll have a look at that. I'll try to see which driver is for which
>> GPU and then make a hardcoded list too.
>>
>> Thanks Ilia!
>>
>> 2015-07-29 4:25 GMT-04:00 Ilia Mirkin <imirkin at alum.mit.edu>:
>>> Feel free to lift the info from my glxinfo page...
>>>
>>> http://people.freedesktop.org/~imirkin/glxinfo/glxinfo.html
>>>
>>> Note the grayed out bits... it's just a hardcoded list, search for
>>> "UNSUPPORTED" in
>>> http://people.freedesktop.org/~imirkin/glxinfo/glxinfo.js . Note that
>>> it's per hardware group, not per driver (which is a fundamental
>>> problem with the approach mesamatrix has taken). For NVIDIA, I filled
>>> the list in myself, for radeon, I think GlennK provided it. I asked
>>> the intel guys a while back, but they didn't seem interested in
>>> providing the info for their HW (and I didn't push for it).
>>>
>>> Hope this helps,
>>>
>>>   -ilia
>>>
>>> On Wed, Jul 29, 2015 at 12:35 AM, Romain Failliot
>>> <romain.failliot at foolstep.com> wrote:
>>>> Hi!
>>>>
>>>> First, I wanted to thank you for the incredible work you've done to
>>>> achieve OpenGL 4.1. The number of visitors exploded on mesamatrix,
>>>> while the average was around 100 visits per day, I had more than 2500
>>>> visits just for the day of the news! This simple fact shows how much
>>>> this news was expected by the community ;)
>>>>
>>>> Anyhow, I'd like to improve the information displayed on the site by
>>>> graying the cells of the drivers that can't support some specific
>>>> extensions (if it's still the case since the old r300 and swrast have
>>>> been removed). But for that I'd need a list of pairs
>>>> "extension-driver" that shows which extension is invalid for which
>>>> driver.
>>>>
>>>> Do you know that? Or do you know where I could find this information?
>>>>
>>>> Thanks a lot!
>>>> Romain
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