1// Copyright 2020-2024 The Khronos Group Inc. 2// 3// SPDX-License-Identifier: CC-BY-4.0 4 5include::{generated}/meta/{refprefix}VK_EXT_4444_formats.adoc[] 6 7=== Other Extension Metadata 8 9*Last Modified Date*:: 10 2020-07-28 11*IP Status*:: 12 No known IP claims. 13*Contributors*:: 14 - Joshua Ashton, Valve 15 - Faith Ekstrand, Intel 16 17=== Description 18 19This extension defines the ename:VK_FORMAT_A4R4G4B4_UNORM_PACK16_EXT and 20ename:VK_FORMAT_A4B4G4R4_UNORM_PACK16_EXT formats which are defined in other 21current graphics APIs. 22 23This extension may be useful for building translation layers for those APIs 24or for porting applications that use these formats without having to resort 25to swizzles. 26 27When VK_EXT_custom_border_color is used, these formats are not subject to 28the same restrictions for border color without format as with 29VK_FORMAT_B4G4R4A4_UNORM_PACK16. 30 31include::{generated}/interfaces/VK_EXT_4444_formats.adoc[] 32 33=== Promotion to Vulkan 1.3 34 35This extension has been partially promoted. 36The format enumerants introduced by the extension are included in core 37Vulkan 1.3, with the EXT suffix omitted. 38However, runtime support for these formats is optional in core Vulkan 1.3, 39while if this extension is supported, runtime support is mandatory. 40The feature structure is not promoted. 41The original enum names are still available as aliases of the core 42functionality. 43 44=== Version History 45 46 * Revision 1, 2020-07-04 (Joshua Ashton) 47 ** Initial draft 48