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From Wojciech Lewandowski, "ref_ptr usage changes made on 9th of June broke VirtualProgram used in osgShaderCompositor example. Taking the opportunity I modified the code a little to use earth sphere as default model. Cow.osg used previously was not looking good in advanced example. I also changed default to advanced example, because its more informative with labels describing virtual programs used to render the objects."

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This commit is contained in:
Robert Osfield
2009-10-10 09:53:10 +00:00
parent 590aabb4fa
commit ae440bfaef
4 changed files with 72 additions and 82 deletions
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84
examples/osgshadercompositor/osgshadercompositor.cpp
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@@ -5,33 +5,87 @@
#include <osg/MatrixTransform>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osg/ShapeDrawable>
#include <osg/Material>
extern osg::Node * CreateSimpleHierarchy( const char * file );
extern osg::Node * CreateAdvancedHierarchy( const char * file );
extern osg::Node * CreateSimpleHierarchy( osg::Node * model );
extern osg::Node * CreateAdvancedHierarchy( osg::Node * model );
////////////////////////////////////////////////////////////////////////////////
osg::Node * CreateGlobe( void )
{
// File not found - create textured sphere
osg::Geode * geode = new osg::Geode;
osg::ref_ptr<osg::TessellationHints> hints = new osg::TessellationHints;
hints->setDetailRatio( 0.3 );
#if 1
osg::ref_ptr<osg::ShapeDrawable> shape = new osg::ShapeDrawable
( new osg::Sphere(osg::Vec3(0.0f, 0.0f, 0.0f), 4.0 ), hints.get() );
#else
osg::ref_ptr<osg::ShapeDrawable> shape = new osg::ShapeDrawable
( new osg::Box( osg::Vec3(-1.0f, -1.0f, -1.0f), 2.0, 2.0, 2.0 ) );
#endif
shape->setColor(osg::Vec4(0.8f, 0.8f, 0.8f, 1.0f));
geode->addDrawable( shape.get() );
osg::StateSet * stateSet = new osg::StateSet;
osg::Texture2D * texture = new osg::Texture2D(
osgDB::readImageFile("Images/land_shallow_topo_2048.jpg")
);
osg::Material * material = new osg::Material;
material->setAmbient
( osg::Material::FRONT_AND_BACK, osg::Vec4( 0.9, 0.9, 0.9, 1.0 ) );
material->setDiffuse
( osg::Material::FRONT_AND_BACK, osg::Vec4( 0.9, 0.9, 0.9, 1.0 ) );
#if 1
material->setSpecular
( osg::Material::FRONT_AND_BACK, osg::Vec4( 0.7, 0.3, 0.3, 1.0 ) );
material->setShininess( osg::Material::FRONT_AND_BACK, 25 );
#endif
stateSet->setAttributeAndModes( material );
stateSet->setTextureAttributeAndModes( 0,texture, osg::StateAttribute::ON );
geode->setStateSet( stateSet );
return geode;
}
////////////////////////////////////////////////////////////////////////////////
int main( int argc, char **argv )
{
// construct the viewer.
osg::ArgumentParser arguments( &argc, argv );
osgViewer::Viewer viewer( arguments );
std::string filename = "cow.osg";
bool useAdvancedTechnique = arguments.read("-a") || arguments.read("--advanced") ;
bool useSimpleExample = arguments.read("-s") || arguments.read("--simple") ;
if (arguments.argc()>1)
{
if (!arguments.isOption(1)) filename = arguments[1];
osg::Node * model = NULL;
if (arguments.argc()>1 && !arguments.isOption(1) ) {
std::string filename = arguments[1];
model = osgDB::readNodeFile( filename );
if ( !model ) {
osg::notify( osg::NOTICE )
<< "Error, cannot read " << filename
<< ". Loading default earth model instead." << std::endl;
}
}
// osg::Node * node = CreateSimpleHierarchy( file );
osg::Node * node = useAdvancedTechnique ?
CreateAdvancedHierarchy( filename.c_str() ) :
CreateSimpleHierarchy( filename.c_str() );
if( model == NULL )
model = CreateGlobe( );
if ( !node ) {
osg::notify( osg::NOTICE ) << "Error, cannot read " << filename << std::endl;
return 1;
}
osg::Node * node = useSimpleExample ?
CreateSimpleHierarchy( model ):
CreateAdvancedHierarchy( model );
viewer.setSceneData( node );
viewer.realize( );