Re: screen capture?

[James W. W. <os...@jw...>]

On Nov 6, 2005, at 9:48 AM, Keith Wiley wrote:

> How do I grab a screen capture of a rendered window?  If I do the  
> fairly straight forward process of copybiting the window's contents  
> into a gworld, the gworld comes up blank (white) even though the  
> window is showing a rendered image.

An OpenGL drawing surface isn't exactly part of a window.  I don't  
know how Grab does it.  If you'd be satisfied to grab just the OpenGL  
part rather than the whole window, you could either render to a  
bitmap, or use glReadPixels.  It is possible, though tricky, to use  
glReadPixels with Quesa.  If you'd like to try that, let me know, and  
I can give some more details.