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