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80 lines
2.8 KiB
80 lines
2.8 KiB
12 years ago
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#ifndef Magnum_Platform_Context_h
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#define Magnum_Platform_Context_h
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/*
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This file is part of Magnum.
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Copyright © 2010, 2011, 2012, 2013, 2014
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Vladimír Vondruš <mosra@centrum.cz>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <Corrade/Utility/Debug.h>
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#include "Magnum/Context.h"
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#include "Magnum/OpenGL.h"
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namespace Magnum { namespace Platform {
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/**
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@brief Platform-specific context
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In most cases not needed to be used directly as the initialization is done
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automatically in `*Application` classes. See @ref platform for more
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information.
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*/
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class Context: public Magnum::Context {
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public:
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/**
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* @brief Constructor
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*
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* Does initial setup, loads OpenGL function pointers using
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* platform-specific API, detects available features and enables them
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* throughout the engine.
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* @see @fn_gl{Get} with @def_gl{MAJOR_VERSION}, @def_gl{MINOR_VERSION},
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* @def_gl{CONTEXT_FLAGS}, @def_gl{NUM_EXTENSIONS},
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* @fn_gl{GetString} with @def_gl{EXTENSIONS}
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*/
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explicit Context():
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#ifndef MAGNUM_TARGET_GLES
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Magnum::Context{functionLoader} {}
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#else
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Magnum::Context{nullptr} {}
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#endif
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private:
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#ifndef MAGNUM_TARGET_GLES
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void functionLoader() {
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/* Init glLoadGen. Ignore functions that failed to load (described
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by `ogl_LOAD_SUCCEEDED + n` return code), as we requested the
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latest OpenGL with many vendor extensions and there won't ever
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everything possible. */
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if(ogl_LoadFunctions() == ogl_LOAD_FAILED) {
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Error() << "ExtensionWrangler: cannot initialize glLoadGen";
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std::exit(64);
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}
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}
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#endif
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};
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}}
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#endif
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