119 lines
3.4 KiB
C++
119 lines
3.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
|
|
* Copyright (C) 2003 3Dlabs Inc. Ltd.
|
|
*
|
|
* This application is open source and may be redistributed and/or modified
|
|
* freely and without restriction, both in commericial and non commericial applications,
|
|
* as long as this copyright notice is maintained.
|
|
*
|
|
* This application is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/* file: examples/osgshaders/osgshaders.cpp
|
|
* author: Mike Weiblen 2003-09-18
|
|
*
|
|
* A demo of the OpenGL Shading Language shaders using osgGL2.
|
|
*
|
|
* See http://www.3dlabs.com/opengl2/ for more information regarding
|
|
* the OpenGL Shading Language.
|
|
*/
|
|
|
|
#include <osg/Notify>
|
|
#include <osgGA/GUIEventAdapter>
|
|
#include <osgGA/GUIActionAdapter>
|
|
#include <osgDB/ReadFile>
|
|
#include <osgUtil/Optimizer>
|
|
#include <osgProducer/Viewer>
|
|
#include <osgGL2/Version>
|
|
|
|
#include "GL2Scene.h"
|
|
|
|
using namespace osg;
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
class KeyHandler: public osgGA::GUIEventHandler
|
|
{
|
|
public:
|
|
KeyHandler( GL2ScenePtr gl2Scene ) :
|
|
_gl2Scene(gl2Scene)
|
|
{}
|
|
|
|
bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& )
|
|
{
|
|
if( ea.getEventType() != osgGA::GUIEventAdapter::KEYDOWN )
|
|
return false;
|
|
|
|
switch( ea.getKey() )
|
|
{
|
|
case 'x':
|
|
_gl2Scene->reloadShaderSource();
|
|
return true;
|
|
case 'y':
|
|
_gl2Scene->toggleShaderEnable();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
GL2ScenePtr _gl2Scene;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser args(&argc,argv);
|
|
|
|
// set up the usage document
|
|
args.getApplicationUsage()->setApplicationName(args.getApplicationName());
|
|
args.getApplicationUsage()->setDescription(args.getApplicationName() +
|
|
" demonstrates the OpenGL Shading Language using osgGL2");
|
|
args.getApplicationUsage()->setCommandLineUsage(args.getApplicationName());
|
|
args.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
|
|
args.getApplicationUsage()->addKeyboardMouseBinding( "x", "Reload and recompile shader source files." );
|
|
args.getApplicationUsage()->addKeyboardMouseBinding( "y", "Toggle shader enable" );
|
|
|
|
// construct the viewer.
|
|
osgProducer::Viewer viewer(args);
|
|
viewer.setUpViewer( osgProducer::Viewer::STANDARD_SETTINGS );
|
|
viewer.getUsage( *args.getApplicationUsage() );
|
|
|
|
if( args.read("-h") || args.read("--help") )
|
|
{
|
|
args.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// any option left unread are converted into errors to write out later.
|
|
args.reportRemainingOptionsAsUnrecognized();
|
|
if( args.errors() )
|
|
{
|
|
args.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// create the scene
|
|
osg::notify(osg::NOTICE) << "osgGL2 version " << osgGL2GetVersion() << std::endl;
|
|
GL2ScenePtr gl2Scene = new GL2Scene;
|
|
|
|
viewer.setSceneData( gl2Scene->getRootNode().get() );
|
|
viewer.getEventHandlerList().push_front( new KeyHandler(gl2Scene) );
|
|
viewer.realize();
|
|
while( !viewer.done() )
|
|
{
|
|
viewer.sync();
|
|
viewer.update();
|
|
viewer.frame();
|
|
}
|
|
viewer.sync();
|
|
return 0;
|
|
}
|
|
|
|
/*EOF*/
|
|
|