Hi Paul, I can't find example that use TextureArray in osg example. but I can answer to your question.
2011/9/26 Paul Palumbo <[email protected]> > Where can I find an example on how to use a TextureArray with OSG? > > I'm trying to setup a uniform to send this TextureArray to my fragment > shader and I'm confused on how to do this. Usually, you'd send a texture to > the shader by setting the texture uniform to the texture number so I thought > I would need to do this for a TextureArray: > geometry->getOrCreateStateSet()->setTextureAttribute(BASE_TEX_ID, > textureArray, osg::StateAttribute::ON); > that is good > sset->addUniform( > new osg::Uniform(osg::Uniform::SAMPLER_2D_ARRAY, "textureArray", > BASE_TEX_ID)); > The third argument is the size of the uniform variable. 1 for value (float, int, vector, textureIndex, ...) >1 for an array of value (float[], int[], textureIndex[], ...) the size of the TextureArray is the depth component of Texture2DArray. you can specify it by Texture2DArray::setDepthTexture(...), or by adding an image Texture2DArray::setImage(unsigned int layer, osg::Image * image); HTH David Callu However, when I assign BASE_TEX_ID to 0, I'm getting: > "Uniform numElements < 1 is invalid" > > from this call: > Uniform::Uniform( Type type, const std::string& name, int numElements ) : > > This seems to imply that the third argument to the Uniform constructor > isn't the texture number but the TextureArray size (?). Then how do you > set this TextureArray to a particular texture number? > > I'm confused... Is there an example out there that shows how to use a > TextureArray? > > Paul P. > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=43014#43014 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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