- * This function is called by software rendering commands to determine if
- * subsequent drawing commands should be executed or discarded depending
- * on the current conditional rendering state.
- * Ideally, this check would be implemented by the GPU when doing hardware
- * rendering.
- * XXX should this function be called via a new driver hook?
+ * This function is called by software rendering commands (all point,
+ * line triangle drawing, glClear, glDrawPixels, glCopyPixels, and
+ * glBitmap, glBlitFramebuffer) to determine if subsequent drawing
+ * commands should be
+ * executed or discarded depending on the current conditional
+ * rendering state. Ideally, this check would be implemented by the
+ * GPU when doing hardware rendering. XXX should this function be
+ * called via a new driver hook?