Hi,
Right now I am texturing a digital surface model using many (more than 4)
airborne images, for example I want to texture the 6 facades of a building.
I am using OSG to do the meshing and texturing. However, I found one object
can only show the first 4 image textures, the 5th 6th won't show up. What's the
problem when I use more than 4 texture units for one geometry? Could you give
some hint please?
osg::ref_ptr<osg::StateSet> stateOne = new osg::StateSet();
stateOne->setDataVariance(osg::Object::DYNAMIC);
for(int i=0; i< imgs; i++)
{
osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D;
texture->setDataVariance(osg::Object::DYNAMIC);
texture->setImage(img[i]);
texture->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_BORDER);
texture->setWrap(osg::Texture::WRAP_T,osg::Texture::CLAMP_TO_BORDER);
texture->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_BORDER);
texture->setBorderColor(osg::Vec4d(1,1,1,0));
osg::ref_ptr<osg::TexEnv> texenv = new osg::TexEnv;
texenv->setMode(osg::TexEnv::MODULATE);
stateOne->setTextureAttribute(i,texenv,osg::StateAttribute::ON);
texture->setInternalFormatMode(osg::Texture::USE_IMAGE_DATA_FORMAT);
texture->setResizeNonPowerOfTwoHint(1);
stateOne->setTextureAttributeAndModes(i,texture,osg::StateAttribute::ON);
}
geode->getDrawable(0)->setStateSet(stateOne);
...
Thank you!
Cheers,
Hailong
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=57945#57945
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