Vulkan 1.3.297 Introduces VK_EXT_present_mode_fifo_latest_ready
The Vulkan 1.3.297 spec update is a small one in just fixing three issues with the documentation and then adding one new extension: VK_EXT_present_mode_fifo_latest_ready. The VK_EXT_present_mode_fifo_latest_ready extension comes courtesy of NVIDIA engineers and provides a new present mode.
VK_EXT_present_mode_fifo_latest_ready is described in the extension documentation as:
"This device extension adds a new present mode, VK_PRESENT_MODE_FIFO_LATEST_READY_EXT.
This tear-free present mode behaves much like VK_PRESENT_MODE_FIFO_KHR, except that each vertical blanking period dequeues consecutive present requests until the latest ready is found to update the current image.
While this seems similar in concept to VK_PRESENT_MODE_MAILBOX_KHR, the fundamental difference is that the processing of the present requests is done during vblank. From the application perspective, this means for example, that in a flip-based model, a single vblank may: cause multiple swapchain images to be released at once, while VK_PRESENT_MODE_MAILBOX_KHR may: continuously be releasing images as new requests become ready.
This additional present mode is useful when using a time-based present API."
NVIDIA released the 550.40.78 Linux driver and 563.22 Windows beta drivers that add support for VK_EXT_present_mode_fifo_latest_ready. So far I haven't seen any other Vulkan drivers expose this new extension.
More details on the Vulkan 1.3.297 spec update via GitHub.
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