How to use

isValid

method

in

com.ardor3d.renderer.state.record.ZBufferStateRecord

private static void enableDepthTest(final boolean enable, final ZBufferStateRecord record) {
  if (enable && (!record.depthTest || !record.isValid())) {
    GL11C.glEnable(GL11C.GL_DEPTH_TEST);
    record.depthTest = true;
  } else if (!enable && (record.depthTest || !record.isValid())) {
    GL11C.glDisable(GL11C.GL_DEPTH_TEST);
    record.depthTest = false;
  }
}

  private static void enableWrite(final boolean enable, final ZBufferStateRecord record) {
    if (enable != record.writable || !record.isValid()) {
      GL11.glDepthMask(enable);
      record.writable = enable;
    }
  }
}

private static void enableDepthTest(final boolean enable, final ZBufferStateRecord record) {
  if (enable && (!record.depthTest || !record.isValid())) {
    GL11.glEnable(GL11.GL_DEPTH_TEST);
    record.depthTest = true;
  } else if (!enable && (record.depthTest || !record.isValid())) {
    GL11.glDisable(GL11.GL_DEPTH_TEST);
    record.depthTest = false;
  }
}

private static void applyFunction(final int depthFunc, final ZBufferStateRecord record) {
  if (depthFunc != record.depthFunc || !record.isValid()) {
    GL11.glDepthFunc(depthFunc);
    record.depthFunc = depthFunc;
  }
}

private static void applyFunction(final int depthFunc, final ZBufferStateRecord record) {
  if (depthFunc != record.depthFunc || !record.isValid()) {
    GL11C.glDepthFunc(depthFunc);
    record.depthFunc = depthFunc;
  }
}

  private static void enableWrite(final boolean enable, final ZBufferStateRecord record) {
    if (enable != record.writable || !record.isValid()) {
      GL11C.glDepthMask(enable);
      record.writable = enable;
    }
  }
}

private static void enableDepthTest(final boolean enable, final ZBufferStateRecord record) {
  final GL gl = GLContext.getCurrentGL();
  if (enable && (!record.depthTest || !record.isValid())) {
    gl.glEnable(GL.GL_DEPTH_TEST);
    record.depthTest = true;
  } else if (!enable && (record.depthTest || !record.isValid())) {
    gl.glDisable(GL.GL_DEPTH_TEST);
    record.depthTest = false;
  }
}

  private static void enableWrite(final boolean enable, final ZBufferStateRecord record) {
    final GL gl = GLU.getCurrentGL();

    if (enable != record.writable || !record.isValid()) {
      gl.glDepthMask(enable);
      record.writable = enable;
    }
  }
}

private static void applyFunction(final int depthFunc, final ZBufferStateRecord record) {
  final GL gl = GLU.getCurrentGL();
  if (depthFunc != record.depthFunc || !record.isValid()) {
    gl.glDepthFunc(depthFunc);
    record.depthFunc = depthFunc;
  }
}

if (!record.isValid()) {
  record.validate();

if (!record.isValid()) {
  record.validate();

if (!record.isValid()) {
  record.validate();