mat< 3, 4, float, mediump > mediump_mat3x4
3 columns of 4 components matrix of medium qualifier floating-point numbers.
mat< 3, 4, float, highp > highp_mat3x4
3 columns of 4 components matrix of high qualifier floating-point numbers.
mat< 3, 4, float, lowp > lowp_mat3x4
3 columns of 4 components matrix of low qualifier floating-point numbers.