VK_KHR_maintenance7

Other Extension Metadata

Last Modified Date

2024-01-30

Interactions and External Dependencies###### Contributors

• Mike Blumenkrantz, Valve
• Hans-Kristian Arntzen, Valve
• Pan Gao, Huawei
• Tobias Hector, AMD
• Jon Leech, Khronos
• Daniel Story, Nintendo
• Shahbaz Youssefi, Google
• Yiwei Zhang, Google
• Matthew Netsch, Qualcomm

Description

VK_KHR_maintenance7 adds a collection of minor features, none of which would warrant an entire extension of their own.

The proposed new features are as follows:

• Add a property query to determine if a framebuffer writes to depth or stencil aspect does not trigger a write access in the sibling aspect. For example, this allows sampling stencil aspect as a texture while rendering to the sibling depth attachment and vice-versa given appropriate image layouts.
• Add a way to query information regarding the underlying devices in environments where the Vulkan implementation is provided through layered implementations. For example, running on Mesa/Venus, driver ID is returned as VK_DRIVER_ID_MESA_VENUS, but it can be necessary to know what the real driver under the hood is. The new VkPhysicalDeviceLayeredApiPropertiesKHR structure can be used to gather information regarding layers underneath the top-level physical device.
• Promote VK_RENDERING_CONTENTS_INLINE_BIT_EXT and VK_SUBPASS_CONTENTS_INLINE_AND_SECONDARY_COMMAND_BUFFERS_EXT to KHR
• Add a limit to report the maximum total count of dynamic uniform buffers and dynamic storage buffers that can be included in a pipeline layout.
• Require that for an unsigned integer query, the 32-bit result value must be equal to the 32 least significant bits of the equivalent 64-bit result value.
• Add query for robust access support when using fragment shading rate attachments

New Structures

• VkPhysicalDeviceLayeredApiPropertiesKHR
• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceMaintenance7FeaturesKHR
• Extending VkPhysicalDeviceLayeredApiPropertiesKHR:
  • VkPhysicalDeviceLayeredApiVulkanPropertiesKHR
• Extending VkPhysicalDeviceProperties2:
  • VkPhysicalDeviceLayeredApiPropertiesListKHR
  • VkPhysicalDeviceMaintenance7PropertiesKHR

New Enums

• VkPhysicalDeviceLayeredApiKHR

New Enum Constants

• VK_KHR_MAINTENANCE_7_EXTENSION_NAME
• VK_KHR_MAINTENANCE_7_SPEC_VERSION
• Extending VkRenderingFlagBits:
  • VK_RENDERING_CONTENTS_INLINE_BIT_KHR
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_LAYERED_API_PROPERTIES_KHR
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_LAYERED_API_PROPERTIES_LIST_KHR
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_LAYERED_API_VULKAN_PROPERTIES_KHR
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MAINTENANCE_7_FEATURES_KHR
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MAINTENANCE_7_PROPERTIES_KHR
• Extending VkSubpassContents:
  • VK_SUBPASS_CONTENTS_INLINE_AND_SECONDARY_COMMAND_BUFFERS_KHR

Issues

None.

Version History

• Revision 1, 2024-01-30 (Jon Leech)
  • Initial revision