Re: GTK+ 3.16.0 released

[LRN <lrn1986 gmail com>]

On 24.03.2015 14:25, Emmanuele Bassi wrote:
> On 24 March 2015 at 10:45, LRN wrote:
> > > > * GDK supports rendering windows using OpenGL; currently
> > > >    this is implemented for X11 and Wayland using libepoxy
> > > >
> > > > * GtkGLArea is a new widget for rendering with OpenGL
> > >
> > > I thought it would also be good to let people know about this, rendering
> > > windows using OpenGL is also implemented on Microsoft Windows as well,
> > > also using libepoxy.
> >
> > Provided that libepoxy is appropriately-patched to consider OpenGL 1.1 to be
> > the core implementation provided by opengl32.dll
> >  (otherwise it may crash at runtime when you try to call OpenGL 1.1 functions).
>
> You mean all functions that were added in OpenGL 1.1 and not
> deprecated after OpenGL 3.2?
>
> GTK+ does not support legacy profiles, so using deprecated, pre-3.2
> API is not going to be possible in any case.

Well, according to libepoxy, glDrawArrays is a 1.1 function:

> static PFNGLDRAWARRAYSPROC
> epoxy_glDrawArrays_resolver(void)
> {
>     static const enum gl_provider providers[] = {
>         Desktop_OpenGL_1_1,
>         OpenGL_ES_2_0,
>         OpenGL_ES_1_0,
>         GL_extension_GL_EXT_vertex_array,
>         gl_provider_terminator
>     };
>     static const uint16_t entrypoints[] = {
>         10254 /* "glDrawArrays" */,
>         10254 /* "glDrawArrays" */,
>         10254 /* "glDrawArrays" */,
>         10267 /* "glDrawArraysEXT" */,
>     };
>     return gl_provider_resolver(entrypoint_strings + 10254 /* "glDrawArrays" */,
>                                 providers, entrypoints);
> }

and gtk-demo does use it[1].

[1] https://git.gnome.org/browse/gtk+/tree/demos/gtk-demo/glarea.c#n262

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