Re: [PyOpenGL-Users] How to use shaders in pyopengl

[Dirk R. <di...@li...>]

	Hi Mike,

thanks for the quick response!

Mike C. Fletcher wrote:
>
> vrml97.arrays is part of PyVRML97... assuming it's installed...
> 
> easy_install pyvrml97
> 
> should have happened when you did
> 
> easy_install OpenGLContext
> 
> However...

I'm trying to set it to be easy for a Windows user, and I didn't use 
easy_install, I just ran setup.py from the OpenGL Context. Let me try 
that one.

This is what I get:

D:\CMPS415_Stuff\Python25\Scripts>easy_install.exe OpenGLContext
Searching for OpenGLContext
Best match: OpenGLContext 2.1.0a2
Adding OpenGLContext 2.1.0a2 to easy-install.pth file
Installing vrml_view-script.pyw script to D:\CMPS415_Stuff\Python25\Scripts
Installing vrml_view.exe script to D:\CMPS415_Stuff\Python25\Scripts
Installing choosecontext-script.pyw script to 
D:\CMPS415_Stuff\Python25\Scripts
Installing choosecontext.exe script to D:\CMPS415_Stuff\Python25\Scripts

Using d:\cmps415_stuff\python25\lib\site-packages
Processing dependencies for OpenGLContext
Searching for PyVRML97
Reading https://sourceforge.net/project/showfiles.php?group_id=19262
Reading https://sourceforge.net/project/showfiles.php?group_id=84080
Reading http://pypi.python.org/simple/PyVRML97/
Couldn't find index page for 'PyVRML97' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
No local packages or download links found for PyVRML97
error: Could not find suitable distribution for 
Requirement.parse('PyVRML97')


Not sure what's wrong here.


> There's no need at all for OpenGLContext to use extensions.  
> OpenGLContext is a separate project.  The reason I mentioned it is that 
> it has *sample* code for using shaders.  Extensions are all available as 
> simple imports in PyOpenGL, see:
> 
> OpenGL/tests/tests.py:552
> 
> for an example of using the frame buffer object extension in PyOpenGL, 
> for instance.  Or OpenGL/arrays/vbo.py for code using vertex buffer 
> objects.

OK, RTFM really does help. :-/ I found the extension usage docs.

So I changed your shaderobjects example to run with raw GLUT. But it's 
not working. I do get past the glInitShaderObjectsARB etc., but when I 
try to call glShaderSourceARB it says it's not available. 
OpenGLExtensionsViewer confirms that the extension really is supported, 
so I'm a little confused.

I attached the program, if somebody could try this on their system I'd 
appreciate it.

Thanks

	Dirk