| // Copyright 2021 The Khronos Group Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_EXT_border_color_swizzle.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2021-10-12 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Graeme Leese, Broadcom |
| - Jan-Harald Fredriksen, Arm |
| - Ricardo Garcia, Igalia |
| - Shahbaz Youssefi, Google |
| - Stu Smith, AMD |
| |
| === Description |
| |
| After the publication of VK_EXT_custom_border_color, it was discovered that |
| some implementations had undefined behavior when combining a sampler that |
| uses a custom border color with image views whose component mapping is not |
| the identity mapping. |
| |
| Since VK_EXT_custom_border_color has already shipped, this new extension |
| VK_EXT_border_color_swizzle was created to define the interaction between |
| custom border colors and non-identity image view swizzles, and provide a |
| work-around for implementations that must pre-swizzle the sampler border |
| color to match the image view component mapping it is combined with. |
| |
| This extension also defines the behavior between samplers with an opaque |
| black border color and image views with a non-identity component swizzle, |
| which was previously left undefined. |
| |
| include::{generated}/interfaces/VK_EXT_border_color_swizzle.txt[] |
| |
| === Issues |
| |
| None. |
| |
| === Version History |
| |
| * Revision 1, 2021-10-12 (Piers Daniell) |
| - Internal revisions. |
