HI Saket, You could do as Jason suggests and use a TexMat to do the tex coord scaling or simply change to using an osg::Texture2D and set the resize non power of two texture flag on the texture to false. The later approach will require support for non power of two textures from your OpenGL driver & hardware, but as this has been support for quite a few years now there is a good chance you can assume it's available.
Robert. On Mon, Jun 14, 2010 at 7:27 PM, Saket Jalan <[email protected]> wrote: > Hi, > > I need to continously display incoming images from a network location. Images > are in the form of raw data bits, whose resolution may change. Looking at osg > Movie example i used createTexturedQuadGeometry to create a geometry of size > of first frame. Then rest of incoming images are used as texture on this quad > using osg::TextureRectangle. But since resolution of these images change, > images are not displayed fully on the quad. I even tried to scale the image > and resize the texture, but they did not work. > For example if my quad is of size 1280X1024, and next frame is of 800x600, > it's not displayed on the quad filling the whole quad and occupies only small > region, where rest of region remains empty > > > Please help... > > I am posting my code here: > > to create geometry: > geometry = > Code: > osg::createTexturedQuadGeometry(osg::Vec3(0.f,0.f,0.f),osg::Vec3(width,0.0f,0.0f),osg::Vec3(0.0f,0.0f,height),0.0f,height,width,1.0f); > > > > to update texture each time with new image (from frame object): > > Code: > class textureCallback: public osg::NodeCallback > { > > > public: > virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) > { > > osg::ref_ptr<osg::Geode> geode=dynamic_cast<osg::Geode*>(node); > > osg::ref_ptr<osg::Image> image = new osg::Image(); > > image->setImage(frame->crop.width,abs(frame->crop.height),0,GL_RGB,GL_BGR,GL_UNSIGNED_BYTE,(unsigned > char*)frame->pixbuf,osg::Image::AllocationMode::USE_MALLOC_FREE); > > > osg::ref_ptr<osg::TextureRectangle> myTex= new > osg::TextureRectangle(image.get()); > myTex->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE); > myTex->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE); > myTex->setWrap(osg::Texture::WRAP_R, osg::Texture::CLAMP_TO_EDGE); > osg::ref_ptr<osg::StateSet> stateone=new osg::StateSet(); > > stateone->setTextureAttributeAndModes(0,myTex.get(),osg::StateAttribute::ON); > geode->setStateSet(stateone.get()); > traverse(node,nv); > } > }; > > > > ... > > Thank you! > > Cheers, > Saket > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=28897#28897 > > > > > > _______________________________________________ > 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
