Hi all, On Mac OS X, there is a possibility of using a special mechanism for OpenGL calls, that is, you include CGLMacros.h in your source, and all gl*** calls take an implicit additional parameter, the context. This makes the use of a "current active context" unnecessary, gives better performance and it works better with threads. Developers are encouraged to use that mechanism.
Some apps (thinking of Quartz Composer) strongly suggest that this is used for their plugins, drawing to the given context, and discourage changing the current OpenGL context. I guess we're not far from a "suggest" becoming a "require" in the future. The way it works is that you have to define a local variable with the name cgl_ctx, and that variable is passed as first argument to the special gl calls: CGLContextObj cgl_ctx = aContext; glBegin(GL_LINES); // which actually is like _blaBegin(cgl_ctx, GL_LINES), because of CGLMacro.h inclusion // this won't compile if cgl_ctx is not defined So my question is: what is your thought about integrating this mechanism in OSG? Thanks, Raphael
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