Re: OpenGL on Linux

The only bad thing I see is not support the OpenGL-ES 2.x subset: LO
won't be fully supported on tablets...

Regards,
Rodolfo

2014-02-11 19:10 GMT-02:00 Markus Mohrhard <markus.mohrhard@googlemail.com>:
> Hey,
>
>
>
> On Mon, Feb 10, 2014 at 7:57 PM, Anthonys Lists <antlists@youngman.org.uk>
> wrote:
> > On 10/02/2014 13:32, Ruslan Kabatsayev wrote:
> > > I'd like to note that there're still lots of video cards which are not
> > > even 2.0 capable - e.g. intel video in my EEE PC 1015PN only supports
> > > OpenGL 1.4 with ARB assembly shaders. Another example would be
> > > (although quite old, but still working and actively supported by intel
> > > in Mesa) i915G chipset, which has similar characteristics.
> > > Also, if you try using Mesa 9.1+ with these, you'll get (exactly, not
> > > higher than) OpenGL 2.1 advertised, but really giving you software
> > > fallbacks every now and then.
> > > So, I'd not like to have an office suite require OpenGL higher than
> > > 1.4 (it may use higher versions if they are available, but still not
> > > require).
> >
> > I'll add that I have literally just retired my old No 2 workstation which
> > had a Matrox Millenium or similar graphics card - and have also re-purposed
> > a Matrox G440. I don't know what OpenGL these are, but the hardware is all
> > Y2K era, and still working fine. I suspect that's older than i915 (the
> > processors are Socket A).
>
>
> I'm sorry but there is no chance that I will support OpenGL 1.x with this
> feature. Even if there is still hardware out there it amkes no sense to work
> with a standard that is so old that it has been deprecated by Khronos
> several years ago. We will simply not support this feature on such hardware.
> Luckily glew allows us to make this a runtime check so it will just not be
> available.
>
> It is a bit more complicated with OpenGL 2.x and 3.x as they are much
> closer. As it seems most people already have support for 3.x on Linux +
> everyone on Windows and modern Macs. In general every recommendation is to
> avoid using the compatibility context and use the new core context that was
> introduced with 3.0. Targeting OpenGl 1.x with the fixed pipeline is just
> stupid while writing new code.
>
> In general we are making the OpenGL stuff right now runtime optional by
> using glew while it was compile time optional before. In general I'm one of
> the persons who is more in favor of dropping support for older versions but
> I had some discussions with other developers who disagree. We will see how
> this plays out.
>
> Regards,
> Markus
>
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