alexcode9

<script type="x-shader/x-vertex" id="vertexshader">
  attribute float scale;
  void main() {
      vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
      gl_PointSize = scale * ( 300.0 / - mvPosition.z );
      gl_Position = projectionMatrix * mvPosition;
  }
</script>

<script type="x-shader/x-fragment" id="fragmentshader">