HI Antiro, You code looks fine, there isn't anything else you need to do to set up filter modes.
I haven't heard of issues with setting the filter modes so would expect it to work. Perhaps what is amiss is either something higher up - such as the texture not being used in the subgraph that you think it is being used - or that the filtering is working and you are just mis-interpreting the results. Robert. On 12 February 2018 at 07:51, antiro black <antir...@gmail.com> wrote: > Hi, > > I'm trying to use a texture to get some data to a shader. The texure is > created by first creating an osg::Image, setting its pixel values manually > and then assigning the image to a texture. I have verified that the image is > created correctly by writing it to a file. > > As for the actual texture generation I use the following code: > > > Code: > > osg::ref_ptr<osg::Image> m_tileDataImg=nullptr; > > // some code to create the osg::image > // ... > // ... > > auto tileDataTexture=new osg::Texture2D(); > > tileDataTexture->setWrap(osg::Texture::WRAP_S,osg::Texture::REPEAT); > tileDataTexture->setWrap(osg::Texture::WRAP_T,osg::Texture::REPEAT); > tileDataTexture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST); > tileDataTexture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::NEAREST); > tileDataTexture->setImage(m_tileDataImg); > > drawableNode->getStateSet()->setTextureAttributeAndModes(0,tileDataTexture,osg::StateAttribute::ON); > > > > > > In my shader I rendered the texture for debugging purposes and realized that > the data was changed. After a closer inspection it turned out that the data > had been interpolated, hence my suspicion that the "setFilter" code did not > work correctly. > > My question is whether there is some other thing I need to do to ensure that > no interpolation happens when sampling the texture in my shader? > > Any help would be greatly appreciated. > Thank you! > > Cheers, > antiro > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=72956#72956 > > > > > > _______________________________________________ > osg-users mailing list > firstname.lastname@example.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list email@example.com http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org