mat< 2, 3, float, highp > highp_mat2x3
2 columns of 3 components matrix of high qualifier floating-point numbers.
mat< 2, 3, float, mediump > mediump_mat2x3
2 columns of 3 components matrix of medium qualifier floating-point numbers.
mat< 2, 3, float, lowp > lowp_mat2x3
2 columns of 3 components matrix of low qualifier floating-point numbers.