precision mediump float;
precision mediump int;

uniform mat4 u_modelviewprojection_matrix;

attribute vec3 a_position;
attribute float a_size;
attribute vec4 a_color;

varying vec4 v_color;

void main () {
  v_color = a_color;
  gl_Position = u_modelviewprojection_matrix * vec4(a_position, 1.0);
  gl_PointSize = a_size;
}