[osg-users] fixed size texture

[Vitaliy Polyakov]

robertosfield wrote:
> Try changing the Texure type to Texture2D and the tex coordinates to 0 to 1.0.
> 


New code,  but old behaviour..


Code:

osg::ref_ptr<osg::Node> createFixedSizeTexture()
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile("8x8.png");
float width = image->s();
float height = image->t();

osg::Vec3Array* verts = new osg::Vec3Array(4);
(*verts)[0] = osg::Vec3(-width/2.0f, -height/2.0, 0.0f);
(*verts)[1] = osg::Vec3(width/2.0f, -height/2.0, 0.0f);
(*verts)[2] = osg::Vec3(width/2.0f, height/2.0, 0.0f);
(*verts)[3] = osg::Vec3(-width/2.0f,height/2.0, 0.0f);

osg::Geometry* geometry = new osg::Geometry;
geometry->setVertexArray( verts );

osg::Vec2Array* texcoords = new osg::Vec2Array(4);
(*texcoords)[0].set(0.0f , 0.0f);
(*texcoords)[1].set(1.0f , 0.0f);
(*texcoords)[2].set(1.0f , 1.0f);
(*texcoords)[3].set(0.0f , 1.0f);

geometry->setTexCoordArray(0, texcoords);

osg::Vec4Array* colors = new osg::Vec4Array(1);
(*colors)[0].set(1, 1, 1, 1);
geometry->setColorArray( colors );
geometry->setColorBinding( osg::Geometry::BIND_OVERALL );

geometry->addPrimitiveSet( new osg::DrawArrays(GL_QUADS, 0, 4));

osg::StateSet* stateSet = geometry->getOrCreateStateSet();

osg::Texture2D* texture = new osg::Texture2D( image );
texture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST);
texture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::NEAREST);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
stateSet->setTextureAttributeAndModes(0, texture, osg::StateAttribute::ON);

stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
stateSet->setAttributeAndModes( new osg::Depth(osg::Depth::ALWAYS,false), 1 );

osg::Geode* geode = new osg::Geode;
geode->addDrawable( geometry );

osg::AutoTransform *at = new osg::AutoTransform;
at->setAutoScaleToScreen(true);
at->setAutoRotateMode( osg::AutoTransform::ROTATE_TO_SCREEN );
at->addChild( geode );

return at;
}




------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=64574#64574