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Index › Programming Questions & Help › OpenGL and 3D Libraries › Extent of OPENGL implementation
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Extent of OPENGL implementation (Read 887 times)
metaphorz
Extent of OPENGL implementation
Mar 30th, 2006, 11:16pm  
At one time, I recall that the OPENGL mode
did not map transformations to Jogl
transformations (to get the hardware
GPU speedup for operations such as rotate,
translate, etc). Is this still so, or does
the Processing "rotateX/Y/Z" in OPENGL mode
map to a glRotatef(...) call?
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fry
Re: Extent of OPENGL implementation
Reply #1 - Mar 30th, 2006, 11:56pm  
that's still the case:
http://dev.processing.org/reference/everything/javadoc/processing/opengl/PGraphicsGL.html
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metaphorz
Re: Extent of OPENGL implementation
Reply #2 - Mar 31st, 2006, 1:21am  
Ok, no problem -- just wondering since I
am rusty on the recent changes to processing.
Here is a rebaked Borg applet using the
new approach:

http://www.cise.ufl.edu/~fishwick/processing/borg

NOTE: Runs great in IE. If you run this in
Firefox, it seems to rotate around 10 times
as slow..Hmm...
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JohnG
Re: Extent of OPENGL implementation
Reply #3 - Apr 4th, 2006, 8:10pm  
I've been doing a bit of digging into Processing's guts,, and I *think* that it might be possible to set up a sketch in such a way that you can do pure GL calls, without the processing vertex munging getting in the way.

However you would have to make sure to not touch processing's rotate/translate etc functionality.

I'll post in a new thread if my tests look positive.
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metaphorz
Re: Extent of OPENGL implementation
Reply #4 - Apr 6th, 2006, 11:36pm  
Right - the borg applet is an example. It does
pure GL calls for all rotations and translations.
-[paul
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