| // Copyright 2014-2021 The Khronos Group, Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_KHR_swapchain_mutable_format.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2018-03-28 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Jason Ekstrand, Intel |
| - Jan-Harald Fredriksen, ARM |
| - Jesse Hall, Google |
| - Daniel Rakos, AMD |
| - Ray Smith, ARM |
| |
| === Description |
| |
| This extension allows processing of swapchain images as different formats to |
| that used by the window system, which is particularly useful for switching |
| between sRGB and linear RGB formats. |
| |
| It adds a new swapchain creation flag that enables creating image views from |
| presentable images with a different format than the one used to create the |
| swapchain. |
| |
| include::{generated}/interfaces/VK_KHR_swapchain_mutable_format.txt[] |
| |
| === Issues |
| |
| 1) Are there any new capabilities needed? |
| |
| *RESOLVED*: No. |
| It is expected that all implementations exposing this extension support |
| swapchain image format mutability. |
| |
| 2) Do we need a separate etext:VK_SWAPCHAIN_CREATE_EXTENDED_USAGE_BIT_KHR? |
| |
| *RESOLVED*: No. |
| This extension requires `VK_KHR_maintenance2` and presentable images of |
| swapchains created with ename:VK_SWAPCHAIN_CREATE_MUTABLE_FORMAT_BIT_KHR are |
| created internally in a way equivalent to specifying both |
| ename:VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT and |
| ename:VK_IMAGE_CREATE_EXTENDED_USAGE_BIT_KHR. |
| |
| 3) Do we need a separate structure to allow specifying an image format list |
| for swapchains? |
| |
| *RESOLVED*: No. |
| We simply use the same slink:VkImageFormatListCreateInfoKHR structure |
| introduced by `VK_KHR_image_format_list`. |
| The structure is required to be included in the pname:pNext chain of |
| slink:VkSwapchainCreateInfoKHR for swapchains created with |
| ename:VK_SWAPCHAIN_CREATE_MUTABLE_FORMAT_BIT_KHR. |
| |
| |
| === Version History |
| |
| * Revision 1, 2018-03-28 (Daniel Rakos) |
| - Internal revisions. |