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/** @page required-extensions Functionality requiring specific OpenGL version or extensions
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@brief List of functions not available on OpenGL 2.1 / OpenGL ES 2.
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The engine is meant to be run on OpenGL 3 capable hardware, but most of the
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functionality is working in OpenGL 2.1 hardware too (i.e. integrated Intel
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GPUs), unless stated otherwise. OpenGL ES is also supported, see @ref building
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for guide how to build the engine for it.
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Following are lists of functionality requiring specific OpenGL version. In
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most cases it is also specified which extension is required for given
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functionality, so if given hardware supports required extension, it doesn't
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need to have required OpenGL version too (e.g. `APPLE_vertex_array_object` is
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supported on Intel GPUs even if they are capable of OpenGL 2.1 only).
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- @subpage requires-gl
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- @subpage requires-gl30
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- @subpage requires-gl31
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- @subpage requires-gl32
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- @subpage requires-gl33
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- @subpage requires-gl40
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- @subpage requires-gl41
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- @subpage requires-gl42
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- @subpage requires-extension
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@page requires-gl Functionality requiring desktop OpenGL (not available on OpenGL ES)
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@page requires-gl30 Functionality requiring OpenGL 3.0
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@page requires-gl31 Functionality requiring OpenGL 3.1
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@page requires-gl32 Functionality requiring OpenGL 3.2
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@page requires-gl33 Functionality requiring OpenGL 3.3
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@page requires-gl40 Functionality requiring OpenGL 4.0
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@page requires-gl41 Functionality requiring OpenGL 4.1
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@page requires-gl42 Functionality requiring OpenGL 4.2
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@page requires-extension Functionality requiring specific OpenGL extension
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*/
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