Em qua., 10 de fev. de 2021 às 17:21, Andrey Zhizhikin <andre...@gmail.com> escreveu:
> On Wed, Feb 10, 2021 at 3:41 PM Ray Smith <raymsmit...@gmail.com> wrote: > > On Wed, Feb 10, 2021 at 1:26 PM Otavio Salvador < > otavio.salva...@ossystems.com.br> wrote: > >> > >> > >> I didn't understand what you mean here. Could you elaborate this? > >> > > > > If you try to build mesa with PACKAGECONFIG "egl gles dri" you get an > error: > > ../mesa-20.3.2/meson.build:144:4: ERROR: Problem encountered: building > OpenGL ES without OpenGL is not supported. > > > > This means that in practice you can't get a GLES-only build of mesa, so > mesa always provides OpenGL (ignoring Vulkan). But for an abstract graphics > driver that's not true - many drivers provide GLES but not OpenGL. I'd > argue that this is an implementation detail (and maybe a minor bug) of > mesa. If mesa internally requires code from its OpenGL support to build > GLES, it should silently include that if it's been configured for GLES-only. > > > > I only mention it to be clear that in general "GLES requires OpenGL" is > not true, even though mesa's build system enforces that. > > Should this be clarified with Mesa folks upfront? If you believe that > this limitation is rather "artificial", then there has to be a proper > explanation from Mesa developers why OGL is provided when OGLES-only > is built. > Agreed ... I'd rather not drop the check until we hear from upstream the reasoning behind it. -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9 9981-7854 Mobile: +1 (347) 903-9750
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