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VK_KHR_maintenance5.adoc

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Other Extension Metadata

Last Modified Date

2023-05-02

Interactions and External Dependencies
Contributors

  • Stu Smith, AMD

  • Tobias Hector, AMD

  • Shahbaz Youssefi, Google

  • Slawomir Cygan, Intel

  • Lionel Landwerlin, Intel

  • James Fitzpatrick, Imagination Technologies

  • Andrew Garrard, Imagination Technologies

  • Ralph Potter, Samsung

  • Pan Gao, Huawei

  • Jan-Harald Fredriksen, ARM

  • Jon Leech, Khronos

  • Mike Blumenkrantz, Valve

Description

VK_KHR_maintenance5 adds a collection of minor features, none of which would warrant an entire extension of their own.

The new features are as follows:

  • A new ename:VK_FORMAT_A1B5G5R5_UNORM_PACK16_KHR format

  • A new ename:VK_FORMAT_A8_UNORM_KHR format

  • A property to indicate that multisample coverage operations are performed after sample counting in EarlyFragmentTests mode

  • Relax VkBufferView creation requirements by allowing subsets of the associated VkBuffer usage using sname:VkBufferUsageFlags2CreateInfoKHR

  • A new command flink:vkCmdBindIndexBuffer2KHR, allowing a range of memory to be bound as an index buffer

  • flink:vkGetDeviceProcAddr must return NULL for supported core functions beyond the version requested by the application.

  • A property to indicate that the sample mask test is performed after sample counting in EarlyFragmentTests mode

  • vkCmdBindVertexBuffers2 now supports using VK_WHOLE_SIZE in the pSizes parameter.

  • A default size of 1.0 is used if code:PointSize is not written

  • Shader modules are deprecated - applications can now pass slink:VkShaderModuleCreateInfo as a chained structure to pipeline creation via slink:VkPipelineShaderStageCreateInfo

  • A function flink:vkGetRenderingAreaGranularityKHR to query the optimal render area for a dynamic rendering instance.

  • A property to indicate that depth/stencil texturing operations with ename:VK_COMPONENT_SWIZZLE_ONE have defined behavior

  • Add flink:vkGetImageSubresourceLayout2KHR and a new function flink:vkGetDeviceImageSubresourceLayoutKHR to allow the application to query the image memory layout without having to create an image object and query it.

  • Allow ename:VK_REMAINING_ARRAY_LAYERS as the pname:layerCount member of slink:VkImageSubresourceLayers

  • Adds stronger guarantees for propagation of ename:VK_ERROR_DEVICE_LOST return values

  • A property to indicate whether code:PointSize controls the final rasterization of polygons if polygon mode is ename:VK_POLYGON_MODE_POINT

  • Two properties to indicate the non-strict line rasterization algorithm used

  • Two new flags words elink:VkPipelineCreateFlagBits2KHR and elink:VkBufferUsageFlagBits2KHR

  • Physical-device-level functions can now be called with any value in the valid range for a type beyond the defined enumerants, such that applications can avoid checking individual features, extensions, or versions before querying supported properties of a particular enumerant.

  • Clarification that copies between images of any type are allowed, treating 1D images as 2D images with a height of 1.

Promotion to Vulkan 1.4

Functionality in this extension is included in core Vulkan 1.4 with the KHR suffix omitted. The original type, enum and command names are still available as aliases of the core functionality.

Version History

  • Revision 1, 2022-12-12 (Stu Smith)

    • Initial revision