Re: [Togl-chat] Beginner Questions for TOGL

[Mike C. F. <mcf...@ro...>]

Simon K. Chan wrote:

>Hi All,
>
>I'm new to Tcl/TK and OpenGL, so I just want to make sure I have my facts
>straight.  Using TOGL, I can use OpenGL to draw things onto Tk's Canvas?
>  
>
Not AFAIK, Togl is a different widget than the canvas.  Under the 
covers, Togl is just setting aside an area of the screen and saying 
"okay, OpenGL (which is often implemented in hardware), please draw in 
this area", while the canvas is written way up in user-mode software 
that draws its contents with calls to the OS's device context mechanisms.

I don't actually use Togl from Tcl, though, so I may be missing some 
option to allow compositing the two widgets together.

Good luck,
Mike

_______________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://members.rogers.com/mcfletch/