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Editorial Team
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Asked: 2026-05-19T10:02:29+00:00

I search for a possibility to migrate my PC OpenGL application and an iPhone

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I search for a possibility to migrate my PC OpenGL application and an iPhone App into one XCode project (for convenience). So if I make chances to these source files I want to apply this for both plattforms and want to be able to compile for both plattforms from one project. How could I accomplish this?
Is there a way to do so in XCode 4 or 3.25? Any help would be highly appreciated

edit: Okay, I went so far – All in all, it seems to work with XCode 4.
My only problems are these openGL/Glut functions, that aren’t working on iPhone:

glPushAttrib( GL_DEPTH_BUFFER_BIT | GL_LIGHTING_BIT );
glPopAttrib();
glutGet(GLUT_ELAPSED_TIME);
glutSwapBuffers();

Any ideas how to fix these issues?

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  1. Editorial Team

    PushAttrib/PopAttrib you’ll need to replace yourself with code which manually tracks those states, or you could rewrite your code in such a way that anything which relies on those states, sets them itself.

    glutGet(GLUT_ELAPSED_TIME) could be replaced by mach_absolute_time (not particularly easy, but the right thing to use) or [NSDate timeIntervalSinceReferenceDate] (easy, but potentially problematic since it’s not guaranteed to be monotonically increasing, or to increase at 1.0 per second)

    glutSwapBuffers will be replaced by -presentRenderbuffer: on your EAGLContext (but it sounds like you’re already doing this; if you weren’t, you wouldn’t be able to see anything).

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