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Is OpenGL source code or binary code compatible with IRIS GL?

April 26, 2017binary code compatible GL IRIS OpenGL source code

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Is OpenGL source code or binary code compatible with IRIS GL?

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IRIS GL is the predecessor to OpenGL. After other implementors had experience trying to port the IRIS GL to their own machines, it was learned that the IRIS GL was too tied to a specific window system or hardware. Based upon consultations with several implementors, OpenGL is much more platform independent. IRIS GL is being maintained and bugs will be fixed, but SGI will no longer add enhancements. OpenGL is now the strategic interface for 3-D computer graphics. OpenGL code is neither binary nor source code compatible with IRIS GL code. It was decided to bite the bullet at this time to make OpenGL incompatible with IRIS GL and fix EVERYTHING that made IRIS GL difficult to port or use. For example, the gl prefix has been added to every command: glVertex(), glColor(), etc.