| // Copyright 2016-2021 The Khronos Group, Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_KHR_maintenance4.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2021-08-18 |
| *Interactions and External Dependencies*:: |
| - Requires SPIR-V 1.2 for code:LocalSizeId |
| *Contributors*:: |
| - Lionel Duc, NVIDIA |
| - Jason Ekstrand, Intel |
| - Spencer Fricke, Samsung |
| - Tobias Hector, AMD |
| - Lionel Landwerlin, Intel |
| - Graeme Leese, Broadcom |
| - Tom Olson, Arm |
| - Stu Smith, AMD |
| |
| === Description |
| |
| `VK_KHR_maintenance4` adds a collection of minor features, none of which |
| would warrant an entire extension of their own. |
| |
| The new features are as follows: |
| |
| * Allow the application to destroy their slink:VkPipelineLayout object |
| immediately after it was used to create another object. |
| It is no longer necessary to keep its handle valid while the created |
| object is in use. |
| * Add a new <<limits-maxBufferSize, pname:maxBufferSize>> |
| implementation-defined limit for the maximum size sname:VkBuffer that |
| can: be created. |
| * Add support for the SPIR-V 1.2 code:LocalSizeId execution mode, which |
| can be used as an alternative to code:LocalSize to specify the local |
| workgroup size with specialization constants. |
| * Add a guarantee that images created with identical creation parameters |
| will always have the same alignment requirements. |
| * Add new flink:vkGetDeviceBufferMemoryRequirementsKHR, |
| flink:vkGetDeviceImageMemoryRequirementsKHR, and |
| flink:vkGetDeviceImageSparseMemoryRequirementsKHR to allow the |
| application to query the image memory requirements without having to |
| create an image object and query it. |
| * Relax the requirement that push constants must be initialized before |
| they are dynamically accessed. |
| * Relax the interface matching rules to allow a larger output vector to |
| match with a smaller input vector, with additional values being |
| discarded. |
| |
| include::{generated}/interfaces/VK_KHR_maintenance4.txt[] |
| |
| === Issues |
| |
| None. |
| |
| === Version History |
| |
| * Revision 1, 2021-08-18 (Piers Daniell) |
| - Internal revisions |
