void Object::renderstencilshadow_glvertex ( int slot, Light *l, bool reverse ) {
  unsigned short *ind = outlines->indices[slot];
  int nind = outlines->nindices[slot];
  if ( !nind ) return;
  int i;
  int mask = 1<<slot;
  StartCounter ("10stencil render");      
  // varhandle assumed to be valid from regular rendering  
	m.Gl (glm);
	glMatrixMode (GL_MODELVIEW); // is assumed to be set to camera matrix		
	glPushMatrix ();	
	glMultMatrixf (glm);

  Vector osl = l->pos * mi;

  glCullFace ( GL_BACK );  
  if ( !reverse )  glStencilOp ( GL_KEEP, GL_KEEP, GL_INCR_WRAP_EXT );
  else glStencilOp ( GL_KEEP, GL_INCR_WRAP_EXT, GL_KEEP );    

  // draw twice once for frontfacing, once for backfacing
  for ( int side=0; side<2; side++ ) {
    // extrusion
    glBegin ( GL_QUADS );
    for ( i=0; i<nind-1; i+=2 ) {
      glVertex3fv ( v[ind[i]].os.longvec );      
      glVertex3fv ( v[ind[i+1]].os.longvec );  
      glVertex4f  ( v[ind[i+1]].os.x - osl.x, v[ind[i+1]].os.y - osl.y, v[ind[i+1]].os.z - osl.z, 0 );                  
      glVertex4f  ( v[ind[i]].os.x - osl.x, v[ind[i]].os.y - osl.y, v[ind[i]].os.z - osl.z, 0 );                     
    }
    glEnd ();    
    if ( !reverse ) {
      // only cap front
      glBegin ( GL_TRIANGLES );
      for ( i=0; i<nf; i++ ) {
        if ( (f[i].flags&mask)==0 ) continue;
        glVertex3fv ( v[f[i].v[0]].os.longvec );
        glVertex3fv ( v[f[i].v[1]].os.longvec );
        glVertex3fv ( v[f[i].v[2]].os.longvec );
      }
      glEnd ();
    } else {
      glBegin ( GL_TRIANGLES );
      for ( i=0; i<nf; i++ ) {
        if ( (f[i].flags&mask)==0 ) {
          glVertex4f ( v[f[i].v[0]].os.x - osl.x, v[f[i].v[0]].os.y - osl.y, v[f[i].v[0]].os.z - osl.z, 0 );
          glVertex4f ( v[f[i].v[1]].os.x - osl.x, v[f[i].v[1]].os.y - osl.y, v[f[i].v[1]].os.z - osl.z, 0 );
          glVertex4f ( v[f[i].v[2]].os.x - osl.x, v[f[i].v[2]].os.y - osl.y, v[f[i].v[2]].os.z - osl.z, 0 );
        } else {
          glVertex3fv ( v[f[i].v[0]].os.longvec );
          glVertex3fv ( v[f[i].v[1]].os.longvec );
          glVertex3fv ( v[f[i].v[2]].os.longvec );
        }
      }
      glEnd ();
    }
    glCullFace ( GL_FRONT );
    if ( !reverse ) glStencilOp ( GL_KEEP, GL_KEEP, GL_DECR_WRAP_EXT );
    else glStencilOp ( GL_KEEP, GL_DECR_WRAP_EXT, GL_KEEP );    
  }      
  glMatrixMode (GL_MODELVIEW);
	glPopMatrix ();
  StopCounter ("10stencil render");      
}