glBegin() context manager?

[Mark]

Rather than writing:

glBegin()
... draw
glEnd()

it would be nice to write:

with glContext():
... draw


I know I can easily create my own glContext context manager, but it
just seems that it would be nicer built in. Or is there one and I just
haven't found it?

[anatoly techtonik]

Just want to make sure that you aware that immediate mode is deprecated in modern OpenGL versions.

[Mark]

I didn't know that. At the moment I'm working through the 4th edn. of
the Open GL SuperBible...

On 1 Nov, 11:14, anatoly techtonik <techto...@gmail.com> wrote:
> Just want to make sure that you aware that immediate mode is deprecated in modern

> OpenGL versions <http://arcsynthesis.org/gltut/>.

[anatoly techtonik]

These are deprecated since OpenGL 3.1

http://www.icare3d.org/news_articles/opengl_3-1_specifications.html

Here is the PDF with some differences explained

http://campar.cs.tum.edu/files/teaching/2011ss/KinectCourse/IntroOpenGL.pdf
--
anatoly t.

On Thu, Nov 1, 2012 at 2:19 PM, Mark <li...@qtrac.plus.com> wrote:

Open GL SuperBible

[Adam Griffiths]

I've implemented some context managers here:

https://github.com/adamlwgriffiths/PyGLy/blob/master/pygly/gl/legacy/__init__.py

Note the legacy module prefix.

Also, be aware that using multiple context managers in a single with statement will result in undesired behavior due to the order that python unwinds them.

Ie:

with matrix_mode( GL_PROJECTION ), matrix( projmatrix ):

   pass

Python unwinds in the same order it set (go figure), so the following will occur:

matrix mode begins unknown

matrix mode push - matrix mode now projection

matrix push - matrix added to projection matrix stack

matrix mode pop - projection mode popped from matrix mode, matrix mode unknown

matrix pop - matrix popped from unknown matrix stack

Cheers,

Adam