| // Copyright 2017-2021 The Khronos Group Inc. |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_EXT_sampler_filter_minmax.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2017-05-19 |
| *Interactions and External Dependencies*:: |
| - Promoted to Vulkan 1.2 Core |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Jeff Bolz, NVIDIA |
| - Piers Daniell, NVIDIA |
| |
| === Description |
| |
| In unextended Vulkan, minification and magnification filters such as LINEAR |
| allow sampled image lookups to return a filtered texel value produced by |
| computing a weighted average of a collection of texels in the neighborhood |
| of the texture coordinate provided. |
| |
| This extension provides a new sampler parameter which allows applications to |
| produce a filtered texel value by computing a component-wise minimum (MIN) |
| or maximum (MAX) of the texels that would normally be averaged. |
| The reduction mode is orthogonal to the minification and magnification |
| filter parameters. |
| The filter parameters are used to identify the set of texels used to produce |
| a final filtered value; the reduction mode identifies how these texels are |
| combined. |
| |
| === Promotion to Vulkan 1.2 |
| |
| All functionality in this extension is included in core Vulkan 1.2, with the |
| EXT suffix omitted. |
| The original type, enum and command names are still available as aliases of |
| the core functionality. |
| |
| include::{generated}/interfaces/VK_EXT_sampler_filter_minmax.txt[] |
| |
| === Version History |
| |
| * Revision 2, 2017-05-19 (Piers Daniell) |
| - Renamed to EXT |
| |
| * Revision 1, 2017-03-25 (Jeff Bolz) |
| - Internal revisions |
