There was a race condition between vkAcquireNextImageKHR and vkQueueSubmit where the image may not have been "acquired" (and therefore may still be in use by the device) before new draws were made to it.
This is a minimal fix to ensure that the race doesn't exist. Ideally we eventually change these waits to happen in the "correct" places (e.g. the presentCompletionGraphicsFence should be waited just before vkQueueSubmit and executeGraphicsFence should be waited just before vkQueuePresentKHR). Optionally this could be done using the semaphores instead of full fences.
There was a race condition between
vkAcquireNextImageKHRandvkQueueSubmitwhere the image may not have been "acquired" (and therefore may still be in use by the device) before new draws were made to it.This is a minimal fix to ensure that the race doesn't exist. Ideally we eventually change these waits to happen in the "correct" places (e.g. the
presentCompletionGraphicsFenceshould be waited just beforevkQueueSubmitandexecuteGraphicsFenceshould be waited just beforevkQueuePresentKHR). Optionally this could be done using the semaphores instead of full fences.