Your OpenGL implementation might signal a maximum texture size of 4096. Which is why there is no alternative to downsizing it.
There is also an OSG_MAX_TEXTURE_SIZE environment variable. I am not sure what its default value is, or if it has a default at all. Have you tried forcing this to 8192? Christian 2016-11-22 13:58 GMT+01:00 Uma Devi Selvaraj <umaselvam1...@gmail.com>: > Hi, > > I have simple code that renders image using osgviewer. I am able to > render the image successfully with the code. My problem now is the size of > the image is reduced. for example the original size of the image is 4683 * > 3035, the image is reduced to 4096 * 3035. Is this expected behaviour or is > there anything I need to add in my code. I have added my code. > > > //required header files > > int main(int argc,char**argv) > { > > osg::ref_ptr<osg::Image> image; > image = osgDB::readImageFile("C:\\Users\\mcw\\Desktop\\DemModel. > tif.gdal"); > std::cout << "Image info are " << image->s() << "\n" <<image->t() > <<"\n" <<image->r() << std::endl; > if (!(image.valid())) > { > std::cout << "Unable to read image file " << std::endl; > getchar(); > return 0; > } > > osg::ref_ptr<osg::Geode> geode =(osg::createGeodeForImage(image)); > > osg::Texture2D *texture = new osg::Texture2D(); > texture->setFilter(osg::Texture::MIN_FILTER, > osg::Texture::LINEAR); > texture->setFilter(osg::Texture::MAG_FILTER, > osg::Texture::LINEAR); > texture->setWrap(osg::Texture::WRAP_R, osg::Texture::REPEAT); > texture->setResizeNonPowerOfTwoHint(false); > texture->setImage(image); > texture->setBorderColor(osg::Vec4d(0.4f, 0.5f, 0.6f, 1.0f)); > osg::StateSet* stateset = new osg::StateSet; > > stateset->setTextureAttributeAndModes(0, texture, > osg::StateAttribute::ON); > > geode->setStateSet(stateset); > osgViewer::Viewer viewer; > viewer.setSceneData(geode.get()); > getchar(); > return viewer.run(); > > } > > ... > > Thank you! > > Cheers, > Uma > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=69470#69470 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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