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Changed the Linux code path for osg::getGLExtensionFuncPtr(..) to use glXGetProcess or glXGetProcessARB when available

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This commit is contained in:
Robert Osfield 2021-03-31 15:38:33 +01:00
parent fd80861510
commit e9ab9ca108
1 changed files with 20 additions and 1 deletions
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21
src/osg/GLExtensions.cpp
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@ -395,7 +395,26 @@ OSG_INIT_SINGLETON_PROXY(GLExtensionDisableStringInitializationProxy, osg::getGL
#elif defined (__linux__)
return dlsym(0, funcName);
struct GetAddress
{
typedef void* (* GLXGetProcAddress)(const GLubyte *) ;
GLXGetProcAddress _glxGetProcAddress;
GetAddress()
{
_glxGetProcAddress = reinterpret_cast<GLXGetProcAddress>(dlsym(0, "glXGetProcAddress"));
if (_glxGetProcAddress==0) _glxGetProcAddress = reinterpret_cast<GLXGetProcAddress>(dlsym(0, "glXGetProcAddressARB"));
}
void* operator() (const char* funcName) const
{
return _glxGetProcAddress ? reinterpret_cast<void*>(_glxGetProcAddress(reinterpret_cast<const GLubyte *>(funcName))) : dlsym(0, funcName);
}
};
static GetAddress s_GetProcAddress;
return s_GetProcAddress(funcName);
#elif defined (__QNX__)