blender-archive/source/blender/draw/modes/shaders/edit_lattice_overlay_frag.glsl

flat in int vertFlag;

out vec4 FragColor;

void main()
{
  /* TODO: vertex size */

  if ((vertFlag & VERT_SELECTED) != 0) {
    FragColor = colorVertexSelect;
  }
  else if ((vertFlag & VERT_ACTIVE) != 0) {
    FragColor = colorEditMeshActive;
  }
  else {
    FragColor = colorVertex;
  }
}