message: Fix fragment shader compile error
  OpenGL ES does not allow swizzles on scalar expressions. It causes error when replaying OpenGL ES desktop application.
diff: @@ -28,5 +28,6 @@ layout (location = 0) out vec4 color_out;
  void main(void)
  {
  - color_out = vec4(max(pixarea, 0.001f).xxx, 1.0f);
  + float area = max(pixarea, 0.001f);
  + color_out = vec4(area, area, area, 1.0f);
  }
  