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Index › Programming Questions & Help › OpenGL and 3D Libraries › Direct access to OpenGL functions
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Direct access to OpenGL functions (Read 921 times)
Quark
Direct access to OpenGL functions
Oct 30th, 2009, 8:51am  
This following quote has come from http://processing.org/reference/libraries/opengl/

Quote:
Always do the assignment/cast from g to pgl inside draw(), because 'g' may change from time to time. In addition, use the GL object returned by beginGL() for the same reason, that the GL context itself may have changed. In practice, I've not really seen this happen, but this is strongly encouraged to prevent things from crashing in a bad way (think blue screen/kernel panic kinds of bad ways).


I am trying to think under what circumstances 'g' might change from time to time
Any ideas
Huh
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josn
Re: Direct access to OpenGL functions
Reply #1 - Oct 30th, 2009, 10:32pm  
I guess its just a hint that the global variable 'g' (defined in PApplet) could be renamed to something else in future releases..
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Quark
Re: Direct access to OpenGL functions
Reply #2 - Oct 31st, 2009, 8:08am  
Possibly but that would prevent the sketch from compiling not running and if it can't compile it can't run therefore it can't crash..

I think it suggests that the value of 'g' can change at runtime without intervention from the programmer and I am interested finding out how that might happen for a new library project I had in mind.
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