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docs: update the overview paragraph for Cogl
Instead of describing OpenGL as "a low level OpenGL abstraction library" it is now summarised as "modern 3D graphics API".
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@ -45,15 +45,17 @@
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</bookinfo>
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<chapter>
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<title>Cogl - GL Abstraction API</title>
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<title>Cogl - a modern 3D graphics API</title>
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<section id="cogl-intro">
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<title>About Cogl</title>
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<para>Cogl is a low level OpenGL abstraction library developed for (and
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part of) Clutter. It is used primarily by Clutter to provide a common
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rendering API that works transparently across OpenGL >=1.4,
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OpenGL ES 1.1 and OpenGL ES 2.0.</para>
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<para>Cogl is a modern 3D graphics API with associated utility
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APIs designed to expose the features of 3D graphics hardware
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using a more object oriented design than OpenGL. The library has
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primarily been driven by the practical needs of Clutter but it
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is not tied to any one toolkit or even constrained to developing
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UI toolkits.</para>
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</section>
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