inverse transpose the texgen normal matrix
inverse transpose the texgen normal matrix

lunixbochs/glshim,seandepagnier/glshim,lunixbochs/glshim,RobertoMalatesta/glshim,seandepagnier/glshim,seandepagnier/glshim,RobertoMalatesta/glshim,lunixbochs/glshim,seandepagnier/glshim,RobertoMalatesta/glshim,RobertoMalatesta/glshim,lunixbochs/glshim