camera->setProjectionMatrix(osg::Matrix::ortho2D(-256.0, 256.0, -256.0,
256.0));
camera->setViewport(0, 0, textureWH, textureWH);
camera->setProjectionMatrix(osg::Matrix::ortho2D(-256.0, 256.0, -256.0,
256.0));
camera->setViewport(0, 0, textureWH, textureWH);