fix transparent model color


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1679 b412e182-2ed4-4078-95c4-27dc59f57fa9
grass shader cleanup


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1680 b412e182-2ed4-4078-95c4-27dc59f57fa9
foggedstain fix


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1681 b412e182-2ed4-4078-95c4-27dc59f57fa9