Hi
my suggestion is not about text, but anyway, if your models contain tristripped geometry, they issue single draw call per primitiveSet (mean for each triangle strip) and they usually not so lenthy at all, about 7-10 vertices on average. With display lists this dont matter, but on gles it can have huge impact on framerate. You can try to run your models through osg optimizer with INDEX_MESH | VERTEX_PRETRANSFORM | VERTEX_POSTTRANSFORM optimization options to make single indexed triangle list per geometry instead of bunch of triangle strips.
Cheers.
23.12.2012, 07:54, "Preet" <[email protected]>:
,It will probably be more efficient to create a scene graph from osg::Geometry/osg::Texture/osg::StateSet rather than using osgText. You could use the osgText::Font and associated Textures to help with the texturing side to the rendering. The osg::Geometry you create you could put as many quads in as you need.I have a couple of questions on using the texture directly rather than using osgText::Text...When grabbing the textures with all the glyphs in it (osgText::Font::getGlyphTextureList), can I safely assume that for one font resolution there will only be one texture for that font? That is will *all* characters which are requested with the same font be handled by one texture?How/when do individual glyphs get added to their collective texture? (I looked through the source code but got a little lost) -- in a small example I tried with just osg::Geometry/Texture as you suggested above, I looked up glyph texture coordinates for a bunch of characters without manually adding any glyphs and it 'just worked'. Do I never need to do anything to ensure the glyphs I need are in the texture or is this taken care of implicitly?
Regards,
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