Hi guys,
I want to develop OSG examples in iOS but OpenGL provides only a sub-set of
OSG. Is this the reason why for example this code doesnt work on the simulator?
:
osgViewer::Viewer viewer;
osg::Group* root = new osg::Group();
osg::Geode* pyramidGeode = new osg::Geode();
osg::Geometry* pyramidGeometry = new osg::Geometry();
pyramidGeode->addDrawable(pyramidGeometry);
root->addChild(pyramidGeode);
osg::Vec3Array* pyramidVertices = new osg::Vec3Array;
pyramidVertices->push_back( osg::Vec3( 0, 0, 0) ); // front left
pyramidVertices->push_back( osg::Vec3(10, 0, 0) ); // front right
pyramidVertices->push_back( osg::Vec3(10,10, 0) ); // back right
pyramidVertices->push_back( osg::Vec3( 0,10, 0) ); // back left
pyramidVertices->push_back( osg::Vec3( 5, 5,10) ); // peak
pyramidGeometry->setVertexArray( pyramidVertices );
osg::DrawElementsUInt* pyramidFaceOne = new
osg::DrawElementsUInt(osg::PrimitiveSet::TRIANGLES, 0);
pyramidFaceOne->push_back(0);
pyramidFaceOne->push_back(1);
pyramidFaceOne->push_back(4);
pyramidGeometry->addPrimitiveSet(pyramidFaceOne);
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //index 0 red
colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //index 1 green
colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //index 2 blue
colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) ); //index 3 white
colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //index 4 red
pyramidGeometry->setColorArray(colors);
pyramidGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
viewer.setSceneData( root );
//viewer.run();
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.realize();
while(true) {
viewer.frame();
}
I get the output:
Warning: detected OpenGL error 'invalid enumerant' at after RenderBin::draw(..)
Thank you!
Cheers,
Tobias
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=42532#42532
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