00001 #include <simgear/scene/material/GLPredicate.hxx>
00002
00003 #include <algorithm>
00004 #include <boost/bind.hpp>
00005
00006 #include <osg/GLExtensions>
00007 #include <osg/Math>
00008
00009 namespace simgear
00010 {
00011 using namespace std;
00012 using namespace osg;
00013 using namespace boost;
00014
00015 bool GLPredicate::operator ()(unsigned int contextID)
00016 {
00017 float versionNumber = getGLVersionNumber() * 10.0f;
00018 float required = (static_cast<float>(majorVersion) * 10.0f
00019 + static_cast<float>(minorVersion));
00020 if (versionNumber < required
00021 && !osg::equivalent(versionNumber, required))
00022 return false;
00023 return (find_if(extensions.begin(), extensions.end(),
00024 !bind(isGLExtensionSupported, contextID,
00025 bind(&string::c_str, _1)))
00026 == extensions.end());
00027 }
00028 }
