Re: [PyOpenGL-Users] Works on OSX, fails on Linux

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

On 11-05-23 02:41 PM, Derakon wrote:
> I'm trying to port a program from OSX to Linux, so it can be run over
> an SSH tunnel. I'm getting "invalid operation" errors when I call
> glTexSubImage2D, though. I've trimmed the program down to a
> more-or-less minimal program (still almost 200 lines) which still
> exhibits the failure:
I'm pretty sure the problem is that you haven't properly bound your
texture for the refresh and as a result you are seeing an error due to
e.g. alignment or similar issues pushing your image parameters into
invalid territory.  I come to that conclusion by adding a
self.bindtexture() to your image class' refresh method, which eliminates
the errors and displays some gradients.  This kind of thing is common in
cross-platform OpenGL, one implementation happens to allow it, another
is more strict about the order of operations.  Linux, in particular, has
become far more stringent in recent years as to order of operations.

HTH,
Mike

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