HI Andreas, Try adding back in the 2.0 factor to see how it effects things.
Robert. On Tue, Aug 31, 2010 at 9:24 AM, Andreas Goebel <[email protected]> wrote: > Hi Robert, > > I´ve digged a bit and found a change concerning the polygon offset. > > In 2.8.3 there is: > > for( ; backdrop_index < max_backdrop_index; backdrop_index++) > { > const GlyphQuads::Coords3& transformedBackdropCoords = > glyphquad._transformedBackdropCoords[backdrop_index][contextID]; > if (!transformedBackdropCoords.empty()) > { > state.setVertexPointer( 3, GL_FLOAT, 0, > &(transformedBackdropCoords.front())); > glPolygonOffset(0.1f * > osg::PolygonOffset::getFactorMultiplier(), > 2.0f * > osg::PolygonOffset::getUnitsMultiplier() * > (max_backdrop_index-backdrop_index) ); > glDrawArrays(GL_QUADS,0,transformedBackdropCoords.size()); > } > } > > whereas in 2.9.8 there is > > for( ; backdrop_index < max_backdrop_index; backdrop_index++) > { > const GlyphQuads::Coords3& transformedBackdropCoords = > glyphquad._transformedBackdropCoords[backdrop_index][contextID]; > if (!transformedBackdropCoords.empty()) > { > state.setVertexPointer( 3, GL_FLOAT, 0, > &(transformedBackdropCoords.front())); > glPolygonOffset(0.1f * > osg::PolygonOffset::getFactorMultiplier(), > osg::PolygonOffset::getUnitsMultiplier() * > (max_backdrop_index-backdrop_index) ); > state.drawQuads(0,transformedBackdropCoords.size()); > } > } > > which leaves out the factor 2.0f. On the other hand I thought that the > y-coordinate was used to change the placement of the backdrop and should not > result in z-fighting. > > Andreas > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
