Hi Robert, thanks, really there is
osg_MultiTexCoordi somehow missed it Regards Sergey On Mon, Sep 8, 2014 at 7:07 PM, Robert Osfield <[email protected]> wrote: > HI Sergey, > > osg::State has support for aliasing the gl_Vertex, gl_Color etc. > attributes to osg_Vertex, osg_Color etc just in the same way as > gl_ModelViewMatrix is mapped to osg_ModelViewMatrix etc. You just need to > enable it via osg::State::setUseVertexAttributeAliasing(true); i.e. > > > graphicscontext->getState()->osg::State::setUseVertexAttributeAliasing(true); > > Robert. > > On 8 September 2014 14:49, Sergey Kurdakov <[email protected]> wrote: > >> Hi All, >> >> there is a nice answer on how to use textures in shader >> here http://forum.openscenegraph.org/viewtopic.php?t=8273 ( see answer >> by Skylark (Jean-Sébastien Guay) ) >> >> now in OpenGL ES 2.0 there is no such feature as possibility to address >> >> gl_TexCoord[0].st >> >> there is a need to pass it in a separate step so in shader it is possible >> to access texture coordinate - say by such declaration: >> >> attribute vec2 a_TexCoordinate; >> >> thus setting setTexCoordArray won't automatically pass any data, and >> overall lack of texture coordinates seem to brake the overall osg way to >> pass everything to program. >> >> so the question is how to appoach the issue to pass texture coordinates >> to OpenGL ES 2.0 in unified way? >> >> Just a thought then: >> OpenSceneGraph has a nice feature like osg_ModelViewMatrix, ideally for >> platforms which lack gl_TexCoord support there could be similar build in >> attributes/uniforms, but I cannot find them. >> >> so if there is not unified way already ( maybe there is , just I'm not >> aware ) any pointers ( or what should be changed to add a glue to bring >> setTexCoordArray to shader attributs/uniforms ) are welcome. >> >> Regards >> Sergey >> >> >> >> >> _______________________________________________ >> 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 > >
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