Re: [PyOpenGL-Users] OSMesa in PyOpenGL?

[Mike C. F. <mcf...@vr...>]

Giuliano Vilela wrote:
...
>
>     Attached is an auto-generated wrapper for the module.  I don't
>     have any
>     test-code to exercise it, so expect that it is going to break :) .  If
>     you have some example/test code that uses it, I can look at making it
>     part of the PyOpenGL distribution (unlikely) or distributing it as a
>     separate module (more likely).  The mechanism doesn't allow for
>     hardware-accelerated rendering, so I don't expect that there will
>     be all
>     that many users.
>
>
> Is there another way to achieve off screen hardware accelerated
> rendering with OpenGL?
IIRC these are the currently-available methods for off-screen rendering
(note, some may require a primary context, I don't do headless rendering
myself):

    * Pixel Buffers (pbuffers)
    * Win32 has render-to-device-independent bitmaps and GLX has
      render-to-GLX-pixmaps (likely OSX has something similar)
    * Aux buffers (have to confirm they don't require a visible primary
      context)
    * FBOs (have to confirm that these don't require a visible primary
      context)

The OSMesa code definitely has a role, particularly where you don't want
to deal with hardware/platform issues, but the trade-off is that it
can't access the hardware/platform mechanisms.

HTH,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com