mat< 4, 2, float, lowp > lowp_mat4x2
4 columns of 2 components matrix of low qualifier floating-point numbers.
mat< 4, 2, float, highp > highp_mat4x2
4 columns of 2 components matrix of high qualifier floating-point numbers.
mat< 4, 2, float, mediump > mediump_mat4x2
4 columns of 2 components matrix of medium qualifier floating-point numbers.