/usr/include/gtkglextmm-1.2/gdkmm/gl/query.h is in libgtkglextmm-x11-1.2-dev 1.2.0-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* gdkglextmm - C++ Wrapper for GdkGLExt
* Copyright (C) 2002-2003 Naofumi Yasufuku
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _GDKMM_GL_QUERY_H
#define _GDKMM_GL_QUERY_H
#include <glibmm.h>
#include <gdkmm/gl/defs.h>
#ifdef GDKGLEXTMM_MULTIHEAD_SUPPORT
#include <gdkmm/display.h>
#endif // GDKGLEXTMM_MULTIHEAD_SUPPORT
#include <gdk/gdkgltypes.h>
namespace Gdk
{
namespace GL
{
/** OpenGL support information query stuff.
*
*
*/
/** Indicates whether the window system supports the OpenGL extension
* (GLX, WGL, etc.).
*
* @return <tt>true</tt> if the OpenGL is supported,
* <tt>false</tt> otherwise.
*/
bool query_extension();
#ifdef GDKGLEXTMM_MULTIHEAD_SUPPORT
bool query_extension(const Glib::RefPtr<const Gdk::Display>& display);
#endif // GDKGLEXTMM_MULTIHEAD_SUPPORT
/** Returns the version numbers of the OpenGL extension to the window system.
*
* In the X Window System, it returns the GLX version.
*
* In the Microsoft Windows, it returns the Windows version.
*
* @param major returns the major version number of the OpenGL extension.
* @param minor returns the minor version number of the OpenGL extension.
* @return <tt>false</tt> if it fails, <tt>true</tt> otherwise.
*/
bool query_version(int& major, int& minor);
#ifdef GDKGLEXTMM_MULTIHEAD_SUPPORT
bool query_version(const Glib::RefPtr<const Gdk::Display>& display,
int& major, int& minor);
#endif // GDKGLEXTMM_MULTIHEAD_SUPPORT
/** Determines whether a given OpenGL extension is supported.
*
* There must be a valid current Gdk::GL::Drawable to call
* Gdk::GL::Query::gl_extension().
*
* Gdk::GL::Query::gl_extension() returns information about OpenGL extensions
* only. This means that window system dependent extensions (for example,
* GLX extensions) are not reported by Gdk::GL::Query::gl_extension().
*
* @param extension name of OpenGL extension.
* @return <tt>false</tt> if the OpenGL extension is supported,
* <tt>true</tt> if not supported.
*/
bool query_gl_extension(const char* extension);
/** Determines whether a given OpenGL extension is supported.
*
* There must be a valid current Gdk::GL::Drawable to call
* Gdk::GL::Query::gl_extension().
*
* Gdk::GL::Query::gl_extension() returns information about OpenGL extensions
* only. This means that window system dependent extensions (for example,
* GLX extensions) are not reported by Gdk::GL::Query::gl_extension().
*
* @param extension name of OpenGL extension.
* @return <tt>false</tt> if the OpenGL extension is supported,
* <tt>true</tt> if not supported.
*/
bool query_gl_extension(const Glib::ustring& extension);
/** Returns the address of the OpenGL extension functions.
*
* @param proc_name extension function name.
* @return the address of the extension function named by @a proc_name.
*/
GdkGLProc get_proc_address(const char* proc_name);
/** Returns the address of the OpenGL extension functions.
*
* @param proc_name extension function name.
* @return the address of the extension function named by @a proc_name.
*/
GdkGLProc get_proc_address(const Glib::ustring& proc_name);
} // namespace GL
} // namespace Gdk
#endif // _GDKMM_GL_QUERY_H
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