FGFS-4.1/OpenSceneGraph
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Implement a GraphicsOperation to test extension availability

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This commit is contained in:
Robert Osfield 2007-01-12 10:28:36 +00:00
parent 4d494c0014
commit f405848380
1 changed files with 54 additions and 49 deletions
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103
examples/osgshaderterrain/osgshaderterrain.cpp
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@ -241,46 +241,49 @@ osg::Node* createScene()
return scene;
}
#if 0
class TestSupportCallback : public osgProducer::OsgCameraGroup::RealizeCallback
class TestSupportOperation: public osg::GraphicsOperation
{
public:
TestSupportCallback():_supported(true),_errorMessage() {}
virtual void operator()( osgProducer::OsgCameraGroup&, osgProducer::OsgSceneHandler& sh, const Producer::RenderSurface& )
public:
TestSupportOperation():
osg::GraphicsOperation("TestSupportOperation",false),
_supported(true),
_errorMessage() {}
virtual void operator () (osg::GraphicsContext* gc)
{
osg::notify(osg::NOTICE)<<"Not called"<<std::endl;
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
unsigned int contextID = gc->getState()->getContextID();
osg::GL2Extensions* gl2ext = osg::GL2Extensions::Get(contextID,true);
if( gl2ext )
{
if( !gl2ext->isGlslSupported() )
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
unsigned int contextID = sh.getSceneView()->getState()->getContextID();
osg::GL2Extensions* gl2ext = osg::GL2Extensions::Get(contextID,true);
if( gl2ext )
{
if( !gl2ext->isGlslSupported() )
{
_supported = false;
_errorMessage = "ERROR: GLSL not supported by OpenGL driver.";
}
GLint numVertexTexUnits = 0;
glGetIntegerv( GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &numVertexTexUnits );
if( numVertexTexUnits <= 0 )
{
_supported = false;
_errorMessage = "ERROR: vertex texturing not supported by OpenGL driver.";
}
}
_supported = false;
_errorMessage = "ERROR: GLSL not supported by OpenGL driver.";
}
GLint numVertexTexUnits = 0;
glGetIntegerv( GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &numVertexTexUnits );
if( numVertexTexUnits <= 0 )
{
_supported = false;
_errorMessage = "ERROR: vertex texturing not supported by OpenGL driver.";
}
sh.init();
}
_supported = false;
_errorMessage = "ERROR: Pllalalal.";
}
OpenThreads::Mutex _mutex;
bool _supported;
std::string _errorMessage;
OpenThreads::Mutex _mutex;
bool _supported;
std::string _errorMessage;
};
#endif
int main(int, char **)
{
@ -292,26 +295,28 @@ int main(int, char **)
// add model to viewer.
viewer.setSceneData( node );
#if 0
// register a test extension callback to be called when app realizes and gets a valid graphics context
osg::ref_ptr<TestSupportCallback> testSupportCallback = new TestSupportCallback();
viewer.setRealizeCallback(testSupportCallback.get());
viewer.setUpViewAcrossAllScreens();
osg::ref_ptr<TestSupportOperation> testSupportOperation = new TestSupportOperation;
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin();
itr != windows.end();
++itr)
{
(*itr)->add(testSupportOperation.get());
}
// create the windows and run the threads.
viewer.realize();
// exit if we don't have the extensions this example needs.
if (!testSupportCallback->_supported)
{
osg::notify(osg::WARN)<<testSupportCallback->_errorMessage<<std::endl;
exit(1);
}
#else
osg::notify(osg::NOTICE)<<"osgshaderterrain OpenGL support test not implemented yet"<<std::endl;
#endif
if (!testSupportOperation->_supported)
{
osg::notify(osg::WARN)<<testSupportOperation->_errorMessage<<std::endl;
return 1;
}
return viewer.run();
}