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88 lines
3.3 KiB
88 lines
3.3 KiB
//======================================================================== |
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// GLFW - An OpenGL framework |
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// Platform: X11/GLX |
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// API version: 3.0 |
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// WWW: http://www.glfw.org/ |
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//------------------------------------------------------------------------ |
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// Copyright (c) 2002-2006 Marcus Geelnard |
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// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org> |
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// |
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// This software is provided 'as-is', without any express or implied |
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// warranty. In no event will the authors be held liable for any damages |
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// arising from the use of this software. |
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// |
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// Permission is granted to anyone to use this software for any purpose, |
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// including commercial applications, and to alter it and redistribute it |
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// freely, subject to the following restrictions: |
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// |
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// 1. The origin of this software must not be misrepresented; you must not |
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// claim that you wrote the original software. If you use this software |
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// in a product, an acknowledgment in the product documentation would |
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// be appreciated but is not required. |
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// |
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// 2. Altered source versions must be plainly marked as such, and must not |
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// be misrepresented as being the original software. |
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// |
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// 3. This notice may not be removed or altered from any source |
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// distribution. |
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// |
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//======================================================================== |
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#include "internal.h" |
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void (*glXGetProcAddress(const GLubyte *procName))(); |
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void (*glXGetProcAddressARB(const GLubyte *procName))(); |
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void (*glXGetProcAddressEXT(const GLubyte *procName))(); |
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// We support four different ways for getting addresses for GL/GLX |
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// extension functions: glXGetProcAddress, glXGetProcAddressARB, |
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// glXGetProcAddressEXT, and dlsym |
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#if defined( _GLFW_HAS_GLXGETPROCADDRESSARB ) |
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#define _glfw_glXGetProcAddress(x) glXGetProcAddressARB(x) |
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#elif defined( _GLFW_HAS_GLXGETPROCADDRESS ) |
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#define _glfw_glXGetProcAddress(x) glXGetProcAddress(x) |
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#elif defined( _GLFW_HAS_GLXGETPROCADDRESSEXT ) |
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#define _glfw_glXGetProcAddress(x) glXGetProcAddressEXT(x) |
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#elif defined( _GLFW_HAS_DLOPEN ) |
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#define _glfw_glXGetProcAddress(x) dlsym(_glfwLibs.libGL,x) |
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#define _GLFW_DLOPEN_LIBGL |
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#else |
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#define _glfw_glXGetProcAddress(x) NULL |
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#endif |
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//************************************************************************ |
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//**** Platform implementation functions **** |
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//************************************************************************ |
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//======================================================================== |
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// Check if an OpenGL extension is available at runtime |
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//======================================================================== |
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int _glfwPlatformExtensionSupported( const char *extension ) |
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{ |
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const GLubyte *extensions; |
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// Get list of GLX extensions |
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extensions = (const GLubyte*) glXQueryExtensionsString( _glfwLibrary.display, |
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_glfwWin.screen ); |
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if( extensions != NULL ) |
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{ |
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if( _glfwStringInExtensionString( extension, extensions ) ) |
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return GL_TRUE; |
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} |
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return GL_FALSE; |
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} |
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//======================================================================== |
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// Get the function pointer to an OpenGL function |
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//======================================================================== |
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void * _glfwPlatformGetProcAddress( const char *procname ) |
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{ |
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return (void *) _glfw_glXGetProcAddress( (const GLubyte *) procname ); |
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} |
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