glXAllocateMemoryNV, glXFreeMemoryNV broken in Coin3d

[ghost]

REF: https://bitbucket.org/Coin3D/coin/issue/97/coin3d-with-nvidia-optimus-oddness

Triggered from the program FreeCAD

Coin warning in glglue_init(): glVertexArrayRangeNV found, but one or more of the other vertex array functions were not found

The missing functions are glXAllocateMemoryNV, glXFreeMemoryNV.

from Coin3d/src/glue/gl.cp , line 1866:

  w->glVertexArrayRangeNV = NULL;
#if defined(GL_NV_vertex_array_range) && (defined(HAVE_GLX) || defined(HAVE_WGL))
  if (cc_glglue_glext_supported(w, "GL_NV_vertex_array_range")) {
    w->glVertexArrayRangeNV = (COIN_PFNGLVERTEXARRAYRANGENVPROC) PROC(w, glVertexArrayRangeNV);
    w->glFlushVertexArrayRangeNV = (COIN_PFNGLFLUSHVERTEXARRAYRANGENVPROC) PROC(w, glFlushVertexArrayRangeNV);
#ifdef HAVE_GLX
    w->glAllocateMemoryNV = (COIN_PFNGLALLOCATEMEMORYNVPROC) PROC(w, glXAllocateMemoryNV);
    w->glFreeMemoryNV = (COIN_PFNGLFREEMEMORYNVPROC) PROC(w, glXFreeMemoryNV);
#endif /* HAVE_GLX */
#ifdef HAVE_WGL
    w->glAllocateMemoryNV = (COIN_PFNGLALLOCATEMEMORYNVPROC) PROC(w, wglAllocateMemoryNV);
    w->glFreeMemoryNV = (COIN_PFNGLFREEMEMORYNVPROC) PROC(w, wglFreeMemoryNV);
#endif /* HAVE_WGL */
    if (w->glVertexArrayRangeNV) {
      if (!w->glFlushVertexArrayRangeNV ||
          !w->glAllocateMemoryNV ||
          !w->glFreeMemoryNV) {
        w->glVertexArrayRangeNV = NULL;
        if (COIN_DEBUG || coin_glglue_debug()) {
          cc_debugerror_postwarning("glglue_init",
                                    "glVertexArrayRangeNV found, but one or more of the other "
                                    "vertex array functions were not found");
        }
      }
    }
  }
#endif /* HAVE_GLX || HAVE_WGL */

Thanks jCandlish .