VK_NV_present_barrier
Other Extension Metadata
Last Modified Date
2022-05-16
Contributors
- Liya Li, Nvidia
- Martin Schwarzer, Nvidia
- Andy Wolf, Nvidia
- Ian Williams, Nvidia
- Ben Morris, Nvidia
- James Jones, Nvidia
- Jeff Juliano, Nvidia
Description
This extension adds support for synchronizing corresponding presentation requests across multiple swapchains using the present barrier.
New Structures
- Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
- Extending VkSurfaceCapabilities2KHR:
- Extending VkSwapchainCreateInfoKHR:
New Enum Constants
VK_NV_PRESENT_BARRIER_EXTENSION_NAME
VK_NV_PRESENT_BARRIER_SPEC_VERSION
- Extending VkStructureType:
VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENT_BARRIER_FEATURES_NV
VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_PRESENT_BARRIER_NV
VK_STRUCTURE_TYPE_SWAPCHAIN_PRESENT_BARRIER_CREATE_INFO_NV
Issues
1) Is there a query interface to check if a swapchain is using the present barrier?
RESOLVED. There is no such query interface. When creating a swapchain, an application can specify to use the present barrier, and if the swapchain is created successfully, this swapchain will be using the present barrier.
2) Do we need an extra interface to set up the present barrier across distributed systems?
RESOLVED. If the required hardware is presented in the system, and all settings for the physical synchronization with other systems are set up, an implementation manages the configuration automatically when creating a swapchain, without any extra calls from the application.
Version History
- Revision 1, 2022-07-20
- Initial version