Hi J-S,
Yes, thank you, that did the trick, now it works. And to answer my question
above, it has to be glEnableClientState, otherwise its not working.
I have one more issue now. Sergey, I am getting a Access Violation Exception
directly after calling viewer.run inside osg::Vec3f line 84, if I use the the
default restart index of USHRT_MAX.
To debug this, I added a method to set the index, and got wired results. I
created an 18 Elements TriStrip, code is bellow. When I set the restart index
between 0 and 18 (18 is not a typo ), everything is fine. When I set it to 19
and higher I get this in the console:
Code:
CullVisitor::apply(Geode&) detected NaN,
depth=-1.IND, center=(-2 0 -7.942e+037),
matrix={
1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN
1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN
1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN
1.#QNAN 1.#QNAN 1.#QNAN 1.#QNAN
}
If I set the index between 1000 and 2000 it works right ( ! ), and if I set it
to 5000 and above I get the Access Violation Exception again.
Do you have any idea what's going on ? Is this related to not creating an
StateAttribute ?
TestCode, uses the class posted by hybr:
Code:
#include "DrawElementsUShortRestart.h"
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/PolygonMode>
osg::ref_ptr< osg::Node > createDrawElements() {
osg::Geometry * geom = new osg::Geometry() ;
osg::Vec3Array * vrts = new osg::Vec3Array() ;
geom -> setVertexArray( vrts ) ;
unsigned int numVrts = 18 ;
// Create Vertex Positions for TriStripe
for( unsigned int i = 0 ; i < numVrts / 2 ; ++i ) {
vrts -> push_back( osg::Vec3( i , 1.f , 0.f ) ) ;
vrts -> push_back( osg::Vec3( i ,-1.f , 0.f ) ) ;
}
// Create a PrimitiveRestart DrawElements
DrawElementsUShortRestart * drawElems = new DrawElementsUShortRestart() ;
// This is set to false by default in the constructors initializer list
drawElems -> enableRestart( true ) ;
// Added this method to the DrawElementsUShortRestart Class
drawElems -> setRestartIndex( 1000 ) ; // Try also 20 and USHRT_MAX
for( unsigned int i = 0 ; i < numVrts ; ++i ) {
if ( i == 9 )
drawElems -> push_back( 1000 ) ; // Try also 20 and USHRT_MAX
drawElems -> push_back( i ) ;
}
geom -> addPrimitiveSet( drawElems ) ;
geom -> getOrCreateStateSet() -> setMode( GL_LIGHTING ,
osg::StateAttribute::OFF ) ;
geom -> getOrCreateStateSet() -> setAttributeAndModes(
new osg::PolygonMode( osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::LINE ) ) ;
osg::ref_ptr< osg::Geode > geode = new osg::Geode() ;
geode -> addDrawable( geom ) ;
return geode.release() ;
}
Thank you!
Cheers, ParticlePeter
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=41911#41911
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