workaround for lack of vertex texture fetch


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1562 b412e182-2ed4-4078-95c4-27dc59f57fa9
bloompbo fixes


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1563 b412e182-2ed4-4078-95c4-27dc59f57fa9
more bloompbo fixes


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1564 b412e182-2ed4-4078-95c4-27dc59f57fa9