Article 168948 of comp.os.vms:
I've built successfully Mesa GL 2.2, a GNU licenced 3D library with OpenGL
API, under OpenVMS 6.1 on VAX and 6.2 on Alpha, using DEC C 5.0 for both with
very few mods (Release notes said Mesa build with VMS 7.0 and DEC C 5.3).

Full source kit plus VAX and Alpha Object libraries (plus demos object files)
are available at my site:

  http://www2.cenaath.cena.dgac.fr/ftp/decwindows/lib/mesa-22.zip

and at Cnam ftp server:

  ftp://ftp2.cnam.fr/decwindows/lib/mesa-22.zip

Nota: the kit is about 3,5 Mb

Mesa-GL is interesting for systems without Open3D (VAX) or without GL X
extensions (old Alphas without ZLX graphic cards).

Patrick

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