Method getDepthValue

core/src/processing/opengl/PGL.java:1562–1570

(int scrX, int scrY)

  protected float getDepthValue(int scrX, int scrY) {
    if (depthBuffer == null) {
      depthBuffer = FloatBuffer.allocate(1);
    }
    depthBuffer.rewind();
    readPixels(scrX, graphics.height - scrY - 1, 1, 1, DEPTH_COMPONENT, FLOAT,
               depthBuffer);
    return depthBuffer.get(0);
  }


  protected byte getStencilValue(int scrX, int scrY) {