[Mesa-users] Downgrade from OpenGL ES 4.6 Mesa 20.0.4 to OpenGL ES 3.0 Mesa 19.2.8 in ubuntu 20

[Pekka Paalanen]

On Tue, 26 May 2020 10:17:49 +0200
sergio campo <vacingforo at gmail.com> wrote:

> I  have an application which only runs with OpenGL ES 3.0 Mesa 19.2.8
> (Ubuntu 18). I want to run it in ubuntu 20 but the problem is that the
> version of opengl library is OpenGL ES 4.6 Mesa 20.0.4. Is there a way to
> run my application on ubuntu 20 with OpenGL ES 3.0 Mesa 19.2.8?

Hi,

there is no such thing as OpenGL ES 4.6, see
https://www.khronos.org/opengles/

In general, OpenGL libraries tend to support all lower versions as well,
so you having support for OpenGL 4.6 (not ES) should not stop you from
using OpenGL 3.0 or OpenGL ES 3.0.

Please, re-check what the actual problem is.


Thanks,
pq

> 
> Adicional information:
> Example laptop on Ubuntu 18:
> $ apt list -a libgl1-mesa-dri
> 
> libgl1-mesa-dri/bionic-updates,now 19.2.8-0ubuntu0~18.04.3 amd64
> [instalado, automático]
> libgl1-mesa-dri/bionic-security 19.2.8-0ubuntu0~18.04.2 amd64
> libgl1-mesa-dri/bionic 18.0.0~rc5-1ubuntu1 amd64
> 
> Example laptop on Ubuntu 20:
> 
> $ apt list -a libgl1-mesa-dri
> Listando... Hecho
> libgl1-mesa-dri/focal,now 20.0.4-2ubuntu1 amd64 [instalado,
> automático]libgl1-mesa-dri/focal 20.0.4-2ubuntu1 i386
> 
> Thanks in advance
> 
> Vacing

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