const int loc = var->data.driver_location;
const unsigned var_vec4s =
var->data.compact ? DIV_ROUND_UP(glsl_get_length(var->type), 4)
const int loc = var->data.driver_location;
const unsigned var_vec4s =
var->data.compact ? DIV_ROUND_UP(glsl_get_length(var->type), 4)