pyopengl-users

[PyOpenGL-Users] deprecations

[Andrew W. <and...@al...>]

Hello,
  I may be a little dense, it appears that quit a few functions in
pyOpenGL3.0 have become deprecated (for example, glMatrixMode).  I don't see
pointers to the appropriate function that I should upgrade to, is there a
list somewhere?
  thanks
  Andrew

Re: [PyOpenGL-Users] deprecations

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

Andrew Wilson wrote:
> Hello,
>   I may be a little dense, it appears that quit a few functions in
> pyOpenGL3.0 have become deprecated (for example, glMatrixMode).  I
> don't see pointers to the appropriate function that I should upgrade
> to, is there a list somewhere?
The changes in OpenGL 3.x, and particularly the deprecations, are more
involved than a 1:1 change of replacing a given function with another
function.  OpenGL 3.x is attempting to eliminate the old-style
direct-mode APIs (and even many of the OpenGL 1.1 entry points) in favor
of an entirely shader-based/attribute-and-uniform-based
streaming-geometry rendering model.  There are some general instructions
here (in the comments):

   
http://blog.vrplumber.com/index.php?/archives/2267-PyOpenGL-3.0.0c1-Available-for-Testing.html

and presentation with background here:

    http://us.pycon.org/2009/conference/schedule/event/94/

note that nVidia has committed to providing support for deprecated
functionality on their cards, so you *may* be able to get away without
rewrites if your vendor supports you.

HTH,
Mike

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

Re: [PyOpenGL-Users] deprecations

[René D. <re...@gm...>]

On Wed, May 20, 2009 at 3:25 AM, Mike C. Fletcher <mcf...@vr...>wrote:

>
> note that nVidia has committed to providing support for deprecated
> functionality on their cards, so you *may* be able to get away without
> rewrites if your vendor supports you.
>

All major vendors have committed to providing support.  I haven't heard of
one that has said they aren't going to support current OpenGL.

Marking existing functionality as depreciated is kind of silly at this
point... considering how little opengl 3.x hardware is out there.

Re: [PyOpenGL-Users] deprecations

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

René Dudfield wrote:
>
> On Wed, May 20, 2009 at 3:25 AM, Mike C. Fletcher
> <mcf...@vr... <mailto:mcf...@vr...>> wrote:
>
>
>     note that nVidia has committed to providing support for deprecated
>     functionality on their cards, so you *may* be able to get away without
>     rewrites if your vendor supports you.
>
>
> All major vendors have committed to providing support.  I haven't
> heard of one that has said they aren't going to support current OpenGL.
I can't find a direct source for ATI, but people do seem to be saying
that they have committed to it.
> Marking existing functionality as depreciated is kind of silly at this
> point... considering how little opengl 3.x hardware is out there.
Hmm, and yet the ARB hasn't retracted the deprecations.  I gather we're
supposed to imply that no legacy code rewrites are necessary but that
all new code should use the new APIs.  Sheesh this is a PITA of a
release process :) .

Have fun,
Mike

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