Hi Robert and all --
MS Windows, being the way it is, makes it not very straightforward to
open an OpenGL3 context. I want to lay out my plans and solicit feedback.
GL3 requires a new entry point to create a GL3 context. As Microsoft has
certainly not bothered to update their SDK to GL3, the only way to get
access to the new context creation interface is to query for the
extension and then call wglGetProcAddress. But of course this requires a
current context first, so that the underlying device driver (which
ultimately supports the new GL3 interface) is loaded and can be queried.
So it's a chicken and egg problem.
When I ported FreeGLUT to GL3 on Windows 7 months ago, I did just as I
described above: I created a regular GL1 context, made it current to an
invisible window, and then queried for the GL3 context extension. Once I
created the new context, I deleted the old one, along with the invisible
Window, then carried on as usual with the rest of setup.
I'm inclined to implement this same mechanism in OSG unless someone has
a better idea. Input welcome.
Thanks,
--
Paul Martz
Skew Matrix Software LLC
_http://www.skew-matrix.com_ <http://www.skew-matrix.com/>
+1 303 859 9466
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