Hi (Robert :)
I've tried a lot of things to get osgText working on MacOSX with VAO. GL3 on
OSX Core Profile requires VAOs.
osgText doesn't setup the VAO path correctly on MacOSX. I can show glyphs when
I use a osg::Geometry as a Wrapper to draw geometries from text glyphs like so:
Code:
class ExtText : public Text {
friend class VAOText;
};
class VAOText : public osg::Geometry
{
private:
osg::ref_ptr<ExtText> _t;
...
void redraw()
{
unsigned int contextID = 0; // renderInfo.getState()->getContextID();
if ( !_t->_textureGlyphQuadMap.empty() )
{
const ExtText::GlyphQuads& glyphquad =
(_t->_textureGlyphQuadMap.begin())->second;
if (!glyphquad._transformedCoords[contextID].valid() ||
glyphquad._transformedCoords[contextID]->empty() )
{
_t->computePositions(contextID);
}
}
for(ExtText::TextureGlyphQuadMap::iterator
titr=_t->_textureGlyphQuadMap.begin();
titr!=_t->_textureGlyphQuadMap.end();
++titr)
{
const ExtText::GlyphQuads& glyphquad = titr->second;
const ExtText::GlyphQuads::Coords3& transformedCoords =
glyphquad._transformedCoords[contextID];
if (transformedCoords.valid() && !transformedCoords->empty())
{
setVertexArray(transformedCoords.get());
setTexCoordArray(0, glyphquad._texcoords.get());
getOrCreateStateSet()->setTextureAttributeAndModes(0,
titr->first.get(),osg::StateAttribute::ON);
addPrimitiveSet(glyphquad._quadIndices);
}
}
}
But it doesn't work with plain osgText. So something is wrong in osgText / VAO.
Cheers,
Remo
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=70061#70061
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