[PyKDE] QGLWidget rendering problems

[Phil Thompson]

On Thursday 18 December 2003 12:36 am, David Boddie wrote:
> On Wed, 17 Dec 2003 16:05:01, Tom Badran <tb100 at doc.ic.ac.uk> wrote:
> >  File "/home/tb100/development/wizard/src/imagedisplay.py", line 61, in
> > paintGL
> >     glTexImage2D(GL_TEXTURE_2D, 0, 3, tex.width(), tex.height(), 0,
> > GL_RGBA, GL_UNSIGNED_BYTE, tex.bits() )
> > ValueError: expect source sequence
> >
> > This is basically copied from the documentation of QGLWidget so i assumed
> > it would work ok. I have no idea what to do, any pointers would be
> > brilliant.
>
> Working from memory, and after some experimentation, I found that the
> glTexImage2D function in PyOpenGL appears to want a list of integers, at
> least when supplied with the GL_UNSIGNED_BYTE constant.
>
> Getting this sort of information from a QImage object at the Python level
> appears to be difficult since there isn't an equivalent to the
> QImage.loadFromData method for saving image data. Wasn't this problem
> discussed on this list recently?

I'm quite willing to add a toString() method to the sip.voidptr type which 
will take an argument specifying the number of bytes. I'm less willing to add 
anything more complicated.

Phil