Hi Sergey
The "[0]" was require by some driver and not by other.
Specification was not clear about this.
Since 19 09 2011, OSG fix automatically this and we didn't need anymore to
care about "[]"
take a look to osg:Program::linkProgram(...) in src/osg/Program : line747
cheers
David
2012/5/8 Sergey Polischuk <pol...@yandex.ru>
> Hi, Eldar
>
> Try to create your uniform with second way, but use
> osg::Uniform(osg::Uniform::FLOAT_VEC4, "colourPoints[0]", 20);// note [0]
> in uniform name
> some drivers need this syntax to work propertly with uniform arrays
>
> Cheers
>
> 08.05.2012, 18:12, "Eldar Insafutdinov" <e.insafutdi...@gmail.com>:
> > Hi
> >
> > I am trying to use uniform arrays with OSG, but it fails. Here are the
> snippets of code that a'm using:
> >
> > Code:
> >
> > osg::StateSet *ss = node->getOrCreateStateSet();
> >
> > // one way of populating uniform array that I tried
> > for(int i = 0; i < sz; ++i)
> > {
> > char buf[30];
> > sprintf(buf, "colourPoints[%d]", i);
> > osg::Vec3 colour = osg::Vec3(1.0, 0.0, 1.0);
> > ss->addUniform(new osg::Uniform(buf, osg::Vec4(colour, 1.0)));
> > }
> >
> > // another way
> > osg::Uniform *colourPoints = new osg::Uniform(osg::Uniform::FLOAT_VEC4,
> "colourPoints", 20);
> > for(int i = 0; i < sz; ++i)
> > {
> > osg::Vec3 colour = osg::Vec3(1.0, 0.0, 1.0);
> > colourPoints->setElement(i, osg::Vec4(colour, 1.0));
> > }
> > ss->addUniform(colourPoints);
> >
> > // and glsl
> > uniform vec4 colourPoints[5];
> >
> > void main(void)
> > {
> > vec4 col = colourPoints[1];
> > gl_FragColor = col;
> > }
> >
> > I tried to set up uniforms both ways but neither of them worked and all
> I get is a black colour. It must be something obvious that I am missing..
> >
> > Cheers,
> > Eldar
> >
> > ------------------
> > Read this topic online here:
> > http://forum.openscenegraph.org/viewtopic.php?p=47598#47598
> >
> > _______________________________________________
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
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