Vulkan's presentation API makes this distinction explicit: VK_PRESENT_MODE_MAILBOX_KHR is the "replace if already queued" mode that actually reduces latency, while VK_PRESENT_MODE_FIFO_KHR is the pipeline-queue variant that adds frames ahead of time. OpenGL never standardized the difference,
  so "triple buffering" meant whatever the driver implemented -- usually vendor-specific extension behavior that varied between hardware. The naming confusion outlived OpenGL's dominance because the concepts got established before any cross-platform API gave them precise semantics.